[LTO merge][committed][08/13] lto
Diego Novillo
dnovillo@google.com
Sat Oct 3 21:15:00 GMT 2009
gcc/lto/ChangeLog
2009-10-02 Rafael Avila de Espindola <espindola@google.com>
* Make-lang.in (lto/lto-lang.o): Don't depend on lto/common.h.
(lto-lang.c): Don't include lto/common.h.
2009-10-02 Rafael Avila de Espindola <espindola@google.com>
* Make-lang.in (LTO_OBJS): Remove lto/common.o.
(lto/common.o): Remove.
* common.c: Remove.
* common.h (lto_kind_str): Remove.
(lto_visibility_str): Remove.
(lto_resolution_str): Make it static.
2009-10-01 Diego Novillo <dnovillo@google.com>
* lto.c (lto_read_decls): Add comment.
Call internal_error instead of gcc_assert.
(lto_resolution_read): Likewise.
(lto_add_all_inlinees): Tidy.
* Make-lang.in: Fix copyright boilerplate.
(lto.pdf): New.
(lto.install-pdf): New.
* lto-tree.h: Fix copyright boilerplate.
* lang-specs.h: Likewise.
Remove ".lto" entry from compilers fragment.
* lto-elf.c: Move inclusion of gelf.h after config.h.
Tidy formatting everywhere.
* lto.h: Fix copyright boilerplate.
Tidy formatting everywhere.
* common.c: Likewise.
* config-lang.in: Likewise.
* common.h: Likewise.
* lto-lang.c: Likewise.
2009-10-01 Richard Guenther <rguenther@suse.de>
* lto.c (lto_read_section_data): Use plain lseek/read.
2009-10-01 Richard Guenther <rguenther@suse.de>
* lto.c (LTO_MMAP_IO): Define if we can mmap files and
use sysconf to query the system page size.
(lto_file_read): Implement fallback using stdio.
(free_section_data): Likewise.
2009-09-29 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_init): Really fix call to
build_common_builtin_nodes.
2009-09-29 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_init): Fix call to
build_common_builtin_nodes.
2009-09-29 Richard Guenther <rguenther@suse.de>
PR lto/40754
* lto-elf.c (init_shdr##BITS): Properly specify alignment
in bytes.
(first_data_block): New static variable.
(lto_elf_append_data): Align the first data block in each
section.
2009-09-28 Diego Novillo <dnovillo@google.com>
* lto-lang.c: Tidy. Remove stale FIXME lto markers.
* lto.c (strip_extension): New.
(get_filename_for_set): Call it. Do not call make_cwd_temp_file.
(lto_execute_ltrans): Tidy.
Do not pass -fwpa nor -fltrans-* to LTRANS.
* opts.c: Tidy formatting and remove stale FIXME lto markers.
* tree.c (need_assembler_name_p): Call
lang_hooks.decls.may_need_assembler_name_p if set.
* varasm.c (default_binds_local_p_1): Remove check for
flag_ltrans.
* varpool.c (decide_is_variable_needed): Do not test for
in_lto_p.
2009-09-22 Richard Guenther <rguenther@suse.de>
PR lto/39276
* lto.c (lto_execute_ltrans): Perform ltrans phase manually.
* Make-lang.in: Remove ltrans-driver stuff.
* config-lang.in: Likewise.
* lang.opt (fltrans-driver): Remove.
* lto-lang.c (lto_init_options): Remove code initializing
ltrans_driver.
* ltrans-driver: Remove.
2009-09-21 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_define_builtins): Remove superfluous
calls to targetm.init_builtins and build_common_builtin_nodes.
(lto_init): Add targetm.arm_eabi_unwinder as parameter to
build_common_builtin_nodes.
* lto.c (lto_materialize_function): Do nothing if NODE is a
clone.
2009-09-03 Diego Novillo <dnovillo@google.com>
* lto-elf.c (validate_file): Replace call to
elf_getshstrndx with call to elf_getshdrstrndx.
2009-08-19 Richard Guenther <rguenther@suse.de>
* lto-lang.c (lto_init): Merge char_type_node with the
appropriately signed variant.
2009-08-19 Richard Guenther <rguenther@suse.de>
PR lto/41071
* lto.c (lto_fixup_common): Re-build the pointer-to chain part one.
(lto_fixup_type): Re-build the pointer-to chain part two.
2009-08-19 Richard Guenther <rguenther@suse.de>
PR lto/41071
* lto.c (lto_fixup_type): Re-build the type variant chain.
2009-08-19 Richard Guenther <rguenther@suse.de>
PR lto/41071
* lto.c (lto_fixup_constructor): New function.
(lto_fixup_tree): Replace all types. Properly fixup
constructors and constants.
2009-08-14 Richard Guenther <rguenther@suse.de>
* lto.c (read_cgraph_and_symbols): Exchange TREE_CHAIN use
for DECL_LANG_SPECIFIC.
2009-08-13 Richard Guenther <rguenther@suse.de>
PR lto/41032
* lto-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Define to NULL.
2009-07-30 Richard Guenther <rguenther@suse.de>
PR lto/40903
* lto.c (read_cgraph_and_symbols): After fixing up decls choose
the largest decl for output and free TREE_CHAIN for further
use.
2009-07-24 Diego Novillo <dnovillo@google.com>
* Make-lang.in: Add empty lto.install-plugin target.
2009-07-13 Diego Novillo <dnovillo@google.com>
* lto.c (lto_fixup_tree): Handle IMPORTED_DECL.
2009-07-11 Richard Guenther <rguenther@suse.de>
* lto-lang.c (lto_write_globals): Wrapup global decls.
2009-07-10 Richard Guenther <rguenther@suse.de>
* lto-lang.c (lto_init): Allocate one more location to make
BUILTINS_LOCATION correct.
2009-07-09 Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>
* lto.c (free_section_data): Cast computed_offset to caddr_t.
2009-07-06 Diego Novillo <dnovillo@google.com>
* lto.c (lto_fixup_type): Fixup TYPE_SIZE and
TYPE_SIZE_UNIT.
2009-07-06 Diego Novillo <dnovillo@google.com>
* lto.c (preload_common_nodes): Remove.
(lto_read_in_decl_state): Call lto_streamer_cache_get.
(lto_read_decls): Call lto_data_in_create and
lto_data_in_delete.
(free_decl): Do not call ggc_free.
(lto_main): Call lto_init_reader.
* lto-lang.c (lto_type_for_size): Handle intTI_type_node.
(lto_init): Initialize main_identifier_node if needed.
Make ptrdiff_type_node be integer_type_node.
2009-06-19 Diego Novillo <dnovillo@google.com>
* lto.c: Remove code guarded by #ifdef LTO_STREAM_DEBUGGING.
Remove code guarded by #ifdef GLOBAL_STREAMER_TRACE.
Remove code guarded by #ifdef LOCAL_TRACE.
2009-06-18 Diego Novillo <dnovillo@google.com>
* lto.c: Update license to GPLv3.
* lto-elf.c: Likewise.
* common.c: Likewise.
* lto-lang.c: Likewise.
* lto.h: Remove superfluous include files. Update all
users.
2009-06-17 Diego Novillo <dnovillo@google.com>
* lto.c (read_cgraph_and_symbols): Call input_cgraph.
2009-06-02 Diego Novillo <dnovillo@google.com>
* lto.c (lto_1_to_1_map): Ignore nodes that have not been
read in.
(materialize_cgraph): Only materialize nodes that have a
representation on file.
2009-06-01 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_handle_option): Hanlde OPT_Wabi.
2009-05-31 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_type_for_mode): Handle all the modes
handled in c_common_type_for_mode.
2009-05-21 Diego Novillo <dnovillo@google.com>
* lto-elf.c: Always include <gelf.h>.
* config-lang.in (target_libs): Remove.
(build_by_default): Set to no.
2009-05-15 Diego Novillo <dnovillo@google.com>
* lto.c (lto_materialize_function): Assert that DECL is
not a builtin.
(materialize_cgraph): Don't try to materialize builtin
functions.
* lto-section-out.c (write_symbol_vec): Do not write
builtin functions.
2009-05-13 Diego Novillo <dnovillo@google.com>
* lto-lang.c (LANG_HOOKS_GET_ALIAS_SET): Define.
2009-05-07 Diego Novillo <dnovillo@google.com>
* lto.c (lto_resolution_read): Add type casts for C++ warnings.
(LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE): Define.
(lto_fixup_type): Call it for TYPE_POINTER_TO,
TYPE_REFERENCE_TO, TYPE_CONTEXT and TYPE_CANONICAL.
(lto_fixup_tree): Call gimple_register_type when *TP is a
type.
(lto_main): Call bitmap_obstack_initialize.
2009-04-22 Diego Novillo <dnovillo@google.com>
* lto.c (free_section_data): Tidy.
(lto_1_to_1_map): Tidy.
(lto_add_all_inlinees): Tidy.
(prefix_name_with_star): New.
(get_filename_for_set): New.
(lto_wpa_write_files): Call cgraph_node_set_needs_ltrans_p
to determine what cgraph node sets to write.
Call get_filename_for_set to compute temporary file
names.
(lto_execute_ltrans): Do not execute LTRANS on files with
names that start with '*'.
Move logic to execute LTRANS together so that LTRANS is
invoked only if there are any files to compile.
(do_whole_program_analysis): Only remove output files
that do not start with '*'.
2009-04-06 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_post_options): Set flag_excess_precision_cmdline.
* lto.c (read_cgraph_and_symbols): Set cgraph_function_flags_ready.
(lto_add_all_inlinees): Tidy.
2009-03-26 Diego Novillo <dnovillo@google.com>
* lto.c: Include gimple.h.
(lto_read_in_decl_state): Call gimple_register_type for
every type in every stream.
(lto_fixup_common): Call gimple_register_type if T has a
type.
(do_whole_program_analysis): Call print_lto_report.
(lto_main): Call print_lto_report after cgraph_optimize.
* Make-lang.in (lto.o): Add dependency on GIMPLE_H.
2009-03-24 Diego Novillo <dnovillo@google.com>
* Make-lang.in (lto-lang.o): Add dependency on TARGET_H and EXPR_H.
(lto.o): Add dependency on GIMPLE_H.
2009-03-10 Simon Baldwin <simonb@google.com>
* lto.c (lto_read_all_file_options): Close any open file descriptor
contained in file_data before freeing.
2009-02-24 Rafael Avila de Espindola <espindola@google.com>
* lto.c (lto_add_inline_clones): Don't add the master clone. Check
for a decl in the original bitmap, not a node.
(lto_add_all_inlinees): Remove original nodes that are not needed.
(lto_scan_statics_in_cgraph_node): Don't care if the node is the master.
2009-02-24 Diego Novillo <dnovillo@google.com>
* lto.c (lto_materialize_function): Update
lto_stats.num_function_bodies.
(get_section_data): Initialize *LEN to 0.
(lto_1_to_1_map): Update lto_stats.num_cgraph_partitions.
(lto_wpa_write_files): Update lto_stats.num_cgraph_nodes.
Update lto_stats.num_output_files.
(read_cgraph_and_symbols): Update lto_stats.num_input_files.
(materialize_cgraph): Update lto_stats.num_input_cgraph_nodes.
(lto_main): Initialize lto_stats.
If flag_lto_report is set, call print_lto_report.
2009-02-19 Diego Novillo <dnovillo@google.com>
Revert
2009-02-19 Rafael Avila de Espindola <espindola@google.com>
* lto.c (lto_add_inline_clones): Don't add the
master clone. Check for a decl in the original
bitmap, not a node.
(lto_add_all_inlinees): Remove original nodes
that are not needed.
(lto_scan_statics_in_cgraph_node): Don't care if
the node is the master.
(lto_promote_cross_file_statics): Use a new
context.seen_node_decls for each set
2009-02-19 Rafael Avila de Espindola <espindola@google.com>
* lto.c (lto_add_inline_clones): Don't add the master clone. Check
for a decl in the original bitmap, not a node.
(lto_add_all_inlinees): Remove original nodes that are not needed.
(lto_scan_statics_in_cgraph_node): Don't care if the node is the master.
(lto_promote_cross_file_statics): Use a new context.seen_node_decls
for each set
2009-02-18 Diego Novillo <dnovillo@google.com>
* lto.c (lto_wpa_write_files): Use timers TV_WHOPR_WPA
and TV_WHOPR_WPA_IO.
(lto_execute_ltrans): Use timer TV_WHOPR_WPA_LTRANS_EXEC.
(read_cgraph_and_symbols): Use timer TV_IPA_LTO_DECL_IO.
(materialize_cgraph): Use timer TV_IPA_LTO_GIMPLE_IO.
Use timer TV_WHOPR_WPA or TV_WHOPR_LTRANS or TV_LTO
depending on command line flags.
(do_whole_program_analysis): Use timer TV_WHOPR_WPA.
(lto_main): Remove timer uses.
2009-02-18 Rafael Avila de Espindola <espindola@google.com>
* lto.c (lto_materialize_function): Don't set DECL_EXTERN to 0.
(lto_wpa_write_files): Update calls to renamed functions.
2009-02-17 Diego Novillo <dnovillo@google.com>
PR 39203
* lto-lang.c (lto_post_options): Disable -fwhole-program
when running LTRANS.
2009-02-10 Diego Novillo <dnovillo@google.com>
* lto.c (read_cgraph_and_symbols): Fix comment.
2009-02-10 Diego Novillo <dnovillo@google.com>
* lto.c (read_cgraph_and_symbols): Read options from all
IL files.
2009-02-10 Diego Novillo <dnovillo@google.com>
* lto.c (read_cgraph_and_symbols): Factor out of lto_main.
(materialize_cgraph): Likewise.
(do_whole_program_analysis): Likewise.
(lto_main): Call read_cgraph_and_symbols,
materialize_cgraph and do_whole_program_analysis.
2009-02-10 Simon Baldwin <simonb@google.com>
* lto.c: Include lto-opts.h.
* (lto_main): Clear file options at loop start, read any saved
options from the first file handled, and re-issue options.
* Makefile.in (lto.o): Add dependency on lto-opts.h.
2009-02-02 Diego Novillo <dnovillo@google.com>
* lto.c (lto_main): Stop LTO_TIMER and use
TV_WHOPR_WPA_LTRANS_EXEC when launching LTRANS.
2009-01-30 H.J. Lu <hongjiu.lu@intel.com>
PR lto/38995
* lto-elf.c (init_shdr##BITS): Set the sh_addralign field
to POINTER_SIZE.
2009-01-29 Ramana Radhakrishnan <ramana.r@gmail.com>
* Make-lang.in (LTO_EXE): Link with all
BACKENDLIBS and not only GMPLIBS
2009-01-28 H.J. Lu <hongjiu.lu@intel.com>
PR bootstrap/38992
* lto-elf.c: Include gelf.h instead of libelf.h.
(lto_elf_file_close): Replace elfx_update_shstrndx with
gelf_getehdr, elf_getscn, gelf_getshdr, gelf_update_shdr and
gelf_update_ehdr.
2009-01-28 H.J. Lu <hongjiu.lu@intel.com>
PR middle-end/38996
* lto-elf.c (DEFINE_INIT_EHDR): Initialize e_version.
2009-01-26 Diego Novillo <dnovillo@google.com>
* lto-lang.c (LANG_HOOKS_TYPES_COMPATIBLE_P): Update.
2009-01-26 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_types_compatible_p): Move to gimple.c
and rename into gimple_types_compatible_p.
2009-01-12 Rafael Avila de Espindola <espindola@google.com>
* lto-lang.c (lang_hooks): Remove the const qualifier.
2009-01-06 Diego Novillo <dnovillo@google.com>
* ltrans-driver: Mark 'all' target as phony.
2008-12-31 Diego Novillo <dnovillo@google.com>
* ltrans-driver: Execute a NOP action for target 'all'.
2008-12-19 Diego Novillo <dnovillo@google.com>
* lto.c (lto_1_to_1_map): Tidy.
2008-12-19 Diego Novillo <dnovillo@google.com>
* lto-elf.c (lto_elf_file_open): When FILENAME cannot
be opened, show its name.
* ltrans-driver: If $verbose is set, do not use parallelism.
2008-12-17 Rafael Avila de Espindola <espindola@google.com>
* lto.c (lto_fixup_function): New.
(lto_fixup_tree): Call lto_fixup_function.
2008-12-14 Doug Kwan <dougkwan@google.com>
* lto.c (lto_1_to_1_map): Create a cgraph node set for any global
variables if there is no function.
2008-12-10 Simon Baldwin <simonb@google.com>
* ltrans-driver: Always run make in silent mode, to avoid make's
trace on stdout interfering with lto-wrapper output.
2008-12-10 Doug Kwan <dougkwan@google.com>
* lto.c (lto_add_inline_clones): Do not force master clones of
inlined functions already in SET to be static inline.
2008-12-04 Doug Kwan <dougkwan@google.com>
* lto.c (globalize_context_t): New type to store states in
globalization of cross-file statics.
(globalize_cross_file_statics): New.
(lto_scan_statics_in_ref_table): Walk tree to look for reachable
static decls that need to be fixed up.
(lto_scan_statics_in_cgraph_node): Change call interface to use
a globalize_context_t CONTEXT for all states used.
(lto_scan_statics_in_remaining_global_vars): New.
(lto_promote_cross_file_statics): Use new call interface of
LTO_SCAN_STATICS_IN_CGRAPH_NODE. Handle remaining externally
visible vars in the last set.
2008-12-03 Diego Novillo <dnovillo@google.com>
* lto.c (lto_fixup_tree): Do not emit an error when
PREVAILING throw but T doesn't.
2008-12-02 Doug Kwan <dougkwan@google.com>
* lto.c (lto_scan_statics_in_ref_table): New function factored out
from code in ...
(lto_scan_statics_in_cgraph_node): Handle both file-scope static
variables and functions.
(lto_promote_cross_file_statics): Rename bitmaps to SEEN_DECLS
and GLOBAL_DECLS from SEEN_VARS and GLOBAL_VARS.
2008-11-29 Diego Novillo <dnovillo@google.com>
* lto.c: Include timevar.h.
(lto_materialize_function): Tidy. Add comments.
(lto_wpa_write_files): Tidy.
(lto_execute_ltrans): Tidy.
(lto_main): Add local variable LTO_TIMER. Initialize it
to one of TV_WHOPR_WPA, TV_WHOPR_LTRANS or TV_LTO.
Start and stop the timer.
Tidy comments.
* Make-lang.in (lto.o): Add dependency on timevar.h.
* ltrans-driver: React to -v and -save-temps.
Use simple heuristic to determine how much parallelism to
use when executing make.
2008-11-12 Doug Kwan <dougkwan@google.com>
* lto.c (lto_bitmap_obstack): Remove var.
(lto_materialize_function): Do nothing instead of marking function
body in file if flag_wpa is true.
(lto_add_all_inlinees): Use bitmap functions in lto-utils.c.
(lto_scan_statics_in_cgraph_node): New function.
(lto_promote_cross_file_statics): Same.
(lto_wpa_write_files): Call lto_promote_cross_file_statics.
Use bitmap functions in lto-utils.c. Remove unsued label OUT.
* Make-lang.in (lto/lto.o): Add lto-utils.h to dependency list.
2008-11-09 Diego Novillo <dnovillo@google.com>
* lto/lto.c (lto_fixup_tree): Change error message locus
information to include location of mismatching
declaration.
Use TREE_NO_WARNING to avoid repeated messages.
(lto_main): If lto_fixup_decls emitted any errors, exit.
* lto/lto-lang.c: Don't include libfuncs.h and except.h
(lto_init_options): Don't enable exceptions by default.
(lto_eh_runtime_type): Move to lto-function-in.c
(lto_init_eh): Likewise.
(lto_init): Don't call lto_init_eh.
* lto/Make-lang.in (lto-lang.o): Remove dependency on
libfuncs.h and except.h.
2008-10-30 Diego Novillo <dnovillo@google.com>
* lto.c (lto_read_decls): Declare debug_main only if
LTO_STREAM_DEBUGGING is enabled.
2008-10-30 Simon Baldwin <simonb@google.com>
* lto.c (lto_wpa_write_files): Create intermediate files with
make_cwd_temp_file().
(lto_maybe_unlink): New. Delete intermediate WPA files unless
WPA_SAVE_LTRANS is set.
(lto_main): Call lto_maybe_unlink() for intermediate WPA files.
* ltrans-driver: Do not strip directory from output files.
2008-10-29 Doug Kwan <dougkwan@google.com>
* lto.c (free_decl): Call lto_symtab_clear_resolution when freeing
DECL.
* Make-lang.in (LTO_OBJS): Remove lto/lto-symtab.o
(lto/lto-symtab.o): Remove rule.
* lto-tree.h (struct lang_identifier): Remove LTO specific fields.
(struct lang_decl): Remove RESOLUTION and add DUMMY in struct.
(LANG_IDENTIFIER_CAST, LTO_IDENTIFIER_DECL, LTO_DECL_RESOLUTION):
Remove macros.
lto-symtab.c (File): Move up one level.
lto-lang.c (cgraph.h): Remove include.
(input_overwrite_node, input_node, input_edge, input_cgraph_1,
input_cgraph): Move to lto-cgraph.c in gcc directory above.
(LANG_HOOKS_INPUT_CGRAPH): Remove use of macro.
2008-10-24 Rafael Espindola <espindola@google.com>
* lto-function-in.c (get_resolution): Return LDPR_PREEMPTED_IR for
non prevailing weak symbols.
2008-10-24 Rafael Espindola <espindola@google.com>
* lto-lang.c (input_cgraph_1): Iterate over nodes, not cgraph_nodes.
2008-10-24 Rafael Espindola <espindola@google.com>
* lto-lang.c (input_node): Avoid casts from pointers to ints of
different types.
2008-10-23 Simon Baldwin <simonb@google.com>
* lto-lang.c (input_node): Save the node reference, rather than the
node pointer, in node->inlined_to.
(input_cgraph_1): Convert node references into node pointers.
2008-10-22 Diego Novillo <dnovillo@google.com>
Rafael Espindola <espindola@google.com>
* lto.c (lto_resolution_read): Tidy.
* lto-symtab.c (lto_symtab_prevailing_decl): Do not
abort if RET is NULL.
2008-10-22 Doug Kwan <dougkwan@google.com>
* lto.c (lto_fixup_tree): Check for NOTHROW conflict only if
exceptions flag is given.
* lto-lang.c: (lto_init_options) Set default exceptions flag.
(lto_init_eh): Remove exceptions flag initialization.
(lto_init): Only call lto_init_eh if exceptions flag is set.
2008-10-21 Diego Novillo <dnovillo@google.com>
* lto.c: Tidy some formatting.
* lto.h: Likewise.
2008-10-21 Simon Baldwin <simonb@google.com>
* lto-symtab.c: (lto_same_type_p): Types cannot be equal if one of
them is NULL (but not the other).
2008-10-17 Diego Novillo <dnovillo@google.com>
* ltrans-driver: Divert output from make to a temporary file.
Show it if the call to make failed.
2008-10-15 Diego Novillo <dnovillo@google.com>
* lto.c (lto_wpa_write_files): Reformat do-while loop.
Do not print TEMP_FILENAME
* ltrans-driver: Call make with -s.
2008-10-15 Diego Novillo <dnovillo@google.com>
* lto-symtab.c (lto_symtab_merge_decl): Do not force
TREE_STATIC on global symbols.
2008-10-14 Ollie Wild <aaw@google.com>
* Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): Remove.
(LTRANS_DRIVER_EXE): Add.
(lto.all.cross): Add LTRANS_DRIVER_EXE.
(lto.all.encap): Add LTRANS_DRIVER_EXE.
(lto.install.common): Remove ltrans-driver.
(lto.mostlyclean): Add LTRANS_DRIVER_EXE.
(LTRANS_DRIVER_EXE): New build rule.
* config-lang.in (compilers): Add ltrans-driver.
2008-10-14 Diego Novillo <dnovillo@google.com>
* Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): Disable transformation
of program name.
2008-10-13 Ollie Wild <aaw@google.com>
* lang-spec.h (@lto): Replace lto1_options with cc1_options.
* lto.c (lto_execute_ltrans): Add "-fno-wpa -fltrans -xlto" to CFLAGS.
* ltrans-driver (LTRANS_FLAGS): Remove.
2008-10-08 Doug Kwan <dougkwan@google.com>
* lto.c (lto_fixup_tree): Remove ATTRIBUTE_UNUSED from DATA.
Handle new tree codes RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE
and TREE_BINFO. Also move code handling FUNCTION_DECL and VAR_DECL
from lto_fixup_state to here.
(lto_fixup_state): Take an lto_fixup_data_t object DATA instead of
just a free-list. Fix up types also. Move decl merging code to
lto_fixup_tree.
(lto_fixup_state_aux): Change AUX to point to an lto_fixup_data_t
object.
(lto_fixup_decls): Use another pointer set to avoid multiple
walking of nodes except for DECLs to be replaced. Pass an
lto_fixup_data_t object to tree-walker.
2008-10-08 Rafael Espindola <espindola@google.com>
* lto-symtab.c (lto_symtab_set_resolution): New.
(lto_symtab_merge_decl): Use lto_symtab_set_resolution and
lto_symtab_get_resolution.
(lto_symtab_prevailing_decl): Return decl for non public decls.
(lto_symtab_get_resolution): New.
* lto.c (lto_fixup_tree, lto_fixup_state): Remove unecessary checks.
2008-10-06 Rafael Espindola <espindola@google.com>
* lto-lang.c: Include cgraph.h.
(input_overwrite_node, input_node, input_edge, input_cgraph_1,
input_cgraph): Moved from lto-cgraph.c.
(LANG_HOOKS_INPUT_CGRAPH): New.
2008-10-03 Rafael Espindola <espindola@google.com>
* lto.c (lto_fixup_tree, lto_fixup_state): Fix the FIXME.
2008-10-03 Rafael Espindola <espindola@google.com>
* lto-symtab.c (lto_symtab_overwrite_decl): Remove. Remove all calls.
(lto_symtab_merge_decl): Update LTO_IDENTIFIER_DECL the reflect the
prevailing definition. Don't mark TREE_NOTHROW differences.
* lto.c (lto_fixup_tree): New.
(lto_fixup_state): New.
(lto_fixup_state_aux): New.
(free_decl): New.
(lto_fixup_decls): New.
(lto_main): Call lto_fixup_decls.
2008-10-02 Ollie Wild <aaw@google.com>
* lang.opt (fltrans): Moved from common.opt. Remove RejectNegative
and Init.
(fwpa): Moved from common.opt. Remove RejectNegative and Init.
* lto-lang.c (lto_post_options): Add validation and fixups for
-fltrans and -fwpa.
2008-10-02 Rafael Espindola <espindola@google.com>
* lto-symtab.c (lto_symtab_merge_var, lto_symtab_merge_fn,
lto_symtab_merge_decl): Return void.
(lto_symtab_prevailing_decl): New.
2008-09-30 Rafael Espindola <espindola@google.com>
* lto-symtab.c (lto_symtab_compatible): Remove the check for already
defined symbols.
(lto_symtab_overwrite_decl): Copy LTO_DECL_RESOLUTION.
(lto_symtab_merge_decl): Store symbol resolution in LTO_DECL_RESOLUTION.
Check for already defined symbols.
* lto-tree.h (lang_decl): Remove dummy and add resolution fields.
(LTO_IDENTIFIER_RESOLUTION): Remove.
(LTO_DECL_RESOLUTION): New.
2008-09-30 Rafael Espindola <espindola@google.com>
* lto.c (lto_read_decls): Use new input_tree signature.
2008-09-26 Doug Kwan <dougkwan@google.com>
* lto.c (lto_main): Call lto_fixup_nothrow_decls to fix up function
bodies affected by exception attribute merging of DECLs.
* lto-symtab.c (lto_symtab_merge_decl): Handle exception attribute
merging.
2008-09-25 Rafael Espindola <espindola@google.com>
* Make-lang.in (PLUGIN_API_H, LTO_TREE_H): New.
(lto/lto-lang.o, lto/lto.o, lto/lto-symtab.o) Use LTO_TREE_H.
* lto-symtab.c (lto_symtab_compatible): New.
(lto_symtab_overwrite_decl): New.
(lto_symtab_merge_decl): Refactor to use the above functions
and the resolution from lang_identifier.
* lto-tree.h: Include plugin-api.h.
(lang_identifier): Add resolution.
(LTO_IDENTIFIER_RESOLUTION): New.
2008-09-25 Ollie Wild <aaw@google.com>
* lang.opt (fltrans-output-list=): New option.
* lto.c (lto_execute_ltrans): Output file names to ltrans_output_list.
2008-09-25 Rafael Espindola <espindola@google.com>
* lto.c (lto_resolution_read): Initialize ret;
2008-09-24 Ollie Wild <aaw@google.com>
* lto.c (sys/mman.h): Move include.
(lto_wpa_write_files): Return a list of written files.
(lto_execute_ltrans): New function.
(lto_main): Call lto_execute_ltrans.
(ltrans-driver): New file.
* lto-lang.c (DEFAULT_LTRANS_DRIVER): New macro.
(DEAULT_LTRANS_DRIVER_LEN): New macro.
(lto_init_options): Initialize ltrans_driver.
(lto_handle_option): Fix incorrect default output value.
* lang.opt (fltrans-driver=): New option.
* Make-lang.in (LTRANS_DRIVER_INSTALL_NAME): New variable.
(lto.install-common): Add lto/ltrans-driver.
2008-09-24 Rafael Espindola <espindola@google.com>
* Make-lang.in (LTO_OBJS): Add lto/common.o.
(lto/lto.o): Depend on lto/common.h.
(lto/common.o): New.
* lang.opt (resolution): New.
* lto-lang.c (resolution_file_name): New.
(lto_handle_option): Handle OPT_resolution.
* lto-symtab.c (lto_symtab_merge_decl): Add a resolution argument.
(lto_symtab_merge_var,lto_symtab_merge_fn): Add a resolution argument.
pass it to lto_symtab_merge_decl.
* lto.c: Include common.h.
(lto_read_decls): Add resolutions and resolutions_size arguments.
Initialize data_in.globals_resolution and
data_in.globals_resolution_size.
(index_and_symbol_resolution): New.
(lto_resolution_read): New.
(lto_file_read): Add argument resolution_file.
Read resolution.
* lto.h (resolution_file_name): New.
2008-09-23 Rafael Espindola <espindola@google.com>
* common.c: Update description.
* common.h: Update description.
2008-09-23 Rafael Espindola <espindola@google.com>
* common.c: Moved from lto-plugin.
* common.h: Moved from lto-plugin.
2008-09-22 Doug Kwan <dougkwan@google.com>
* lto.c (VEC(bitmap,heap)): Declare.
(lto_materialize_function): Handle WAP mode specially.
(lto_add_inline_clones): New.
(lto_add_all_inlinees): Changle algorithm and to use bitmaps. Also
return a bitmap of inlined decls.
(lto_wpa_write_files): Handle all DECLs brought in by inlining.
(lto_main): Call reset_inline_failed to reset inlining states.
Check call-graph after WPA inlining.
* lto-lang.c (lto_init): Do not clear flag_generate_lto
unconditionally.
2008-09-19 Doug Kwan <dougkwan@google.com>
lto.c (lto_main): Remove unsued wrapper code.
lang-specs.h (@lto): Use lto1_options instead of cc1_options.
2008-09-19 Rafael Espindola <espindola@google.com>
* lto-symtab.c: Include lto-tree-in.h.
* lto-tree.h (lto_symtab_merge_var, lto_symtab_merge_fn): Remove.
* lto.h (lto_symtab_merge_var, lto_symtab_merge_fn): Remove
* Make-lang.in (lto/lto-symtab.o): Add lto-tree-in.h.
2008-09-17 Paolo Bonzini <bonzini@gnu.org>
Rafael Avila de Espindola <espindola@google.com>
* lto-lang.c (COMPOUND_LITERAL_EXPR_DECL_STMT,
COMPOUND_LITERAL_EXPR_DECL): Remove.
(emit_local_var): Remove.
(lto_expand_expr): Remove.
(lto_staticp): Remove.
(LANG_HOOKS_EXPAND_EXPR): Remove.
(LANG_HOOKS_STATICP): Remove.
2008-09-11 Diego Novillo <dnovillo@google.com>
* lto-lang.c: Include except.h and libfuncs.h.
(lto_init_eh): New.
(lto_init): Call it.
Set flag_generate_lto to 0.
* Make-lang.in (lto-lang.o): Add dependency on except.h
and libfuncs.h.
2008-09-09 Bill Maddox <maddox@google.com>
* lto-lang.c: Include header file expr.h.
(COMPOUND_LITERAL_EXPR_DECL_STMT,
COMPOUND_LITERAL_EXPR_DECL): Copied from c-common.h.
(emit_local_var): Copied from c-semantics.c.
(lto_expand_expr, lto_staticp): Copied from c_expand_expr
and c_staticp in c-common.c.
(LANG_HOOKS_EXPAND_EXPR,LANG_HOOKS_STATICP): Redefined.
2008-09-08 Diego Novillo <dnovillo@google.com>
* lto-lang.c (lto_global_bindings_p): Return 1 during
IPA passes.
2008-09-07 Diego Novillo <dnovillo@google.com>
* lto.c: Tidy formatting.
2008-08-04 Bill Maddox <maddox@google.com>
* lto-symtab.c (lto_symtab_merge_decl): Add comment.
2008-09-03 Doug Kwan <dougkwan@google.com>
lto.c (lto_add_all_inlinees): Reset FAILED_REASON of edges to
CIF_OK instead of NULL.
2008-09-02 Diego Novillo <dnovillo@google.com>
Simon Baldwin <simonb@google.com>
* lto-lang.c (lto_type_for_size): Rewrite. Adapt from
c_common_type_for_size.
(lto_type_for_mode): Remove ATTRIBUTE_UNUSED markers.
(lto_init): Call linemap_add.
(signed_and_unsigned_types): Remove.
2008-08-29 Diego Novillo <dnovillo@google.com>
* lto-lang.c (handle_noreturn_attribute): New local function.
(handle_const_attribute): New local function.
(handle_malloc_attribute): New local function.
(handle_pure_attribute): New local function.
(handle_novops_attribute): New local function.
(handle_nonnull_attribute): New local function.
(handle_nothrow_attribute): New local function.
(handle_sentinel_attribute): New local function.
(handle_type_generic_attribute): New local function.
(handle_format_attribute): New local function.
(handle_format_arg_attribute): New local function.
(lto_attribute_table): Declare.
(lto_format_attribute_table): Declare.
(lto_init_attributes): New local function.
(lto_define_builtins): Call it.
Call targetm.init_builtins and build_common_builtin_nodes.
(LANG_HOOKS_COMMON_ATTRIBUTE_TABLE): Define.
(LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE): Define.
2008-08-28 Diego Novillo <dnovillo@google.com>
* Make-lang.in (lto-lang.o): Replace tree-gimple.h with
$(GIMPLE_H).
(lto-symtab.o): Add dependency on $(GIMPLE_H).
* lto-lang.c: Include gimple.h instead of tree-gimple.h.
* lto-symtab.c: Include gimple.h.
* lto-tree.h (chain_next): Replace GENERIC_NEXT with
TREE_CHAIN.
2008-08-27 Doug Kwan <dougkwan@google.com>
* lto.c (vec.h, bitmap.h, pointer-set.h, ipa-prop.h, ggc.h,
gt-lto-lto.h): New includes.
(lto_materialize_function): Do not read in function body in WPA mode.
Format a line to fit in 80 columns.
(lto_cgraph_node_sets): New garbage collected variable.
(lto_1_to_1_map, lto_add_all_inlinees, lto_wpa_write_files):
New functions.
(lto_main): Initialize bitmap obstack. Add code to handle WPA mode.
* Make-lang.in (LTO_H): Replace filename lto-section-in.h with
variable LTO_SECTION_IN_H.
(lto/lto.o): Include gt-lto-lto-c.h ggc.h ,VEC_H, BITMAP_H,
pointer-set.h and IPA_PROP_H. Also replace filename lto-section-in.h
with variable LTO_SECTION_IN_H.
* config-lang.in (gtfiles): Add lto/lto.c.
* lto-symtab.c (lto_symtab_merge_decl): Set DECL_CONTEXT of
merged DECL_RESULT correctly.
2008-08-26 Bill Maddox <maddox@google.com>
* lto-lang.c Include tree-gimple.h.
(lto_mark_addressable): Call mark_addressable rather than
asserting.
(lto_post_options): Suppress debug info generation.
* Make-lang.in: Add dependency of lto-lang.o on tree-gimple.h.
2008-08-25 Bill Maddox <maddox@google.com>
* lto-symtab.c (lto_symtab_merge_decl): Remove a suspect
assertion and leave an explanatory comment in its place.
2008-08-21 Doug Kwan <dougkwan@google.com>
* lto.c (preload_common_nodes): Call lto_get_common_nodes to get a list
of common nodes instead of computing locallly.
(lto_read_in_decl_state): New.
(lto_read_decls): Change code for udpate in struct lto_decl_header.
Read global and per-function in-decl states.
* Make-lang.in (LTO_H): Update dependency.
(lto/lto.o): Same.
(lto-symtab.c): Merge (revision 139039)
* lto-symtab.c (lto_symtab_merge_decl): Merge DECL_RESULT.
2008-08-21 Rafael Espindola <espindola@google.com>
* config-lang.in (target_libs): New.
2008-08-20 Bill Maddox <maddox@google.com>
* lto.c (current_lto_file): Remove GTY marker from static
variable. Remove include of file gt-lto-lto.h.
* Make-lang.in: Remove dependency of lto/lto.o on
gt-lto-lto.h.
* lto-elf.c (lto_file_close): Removed.
(lto_elf_file_open): Use XCNEW instead of GGC_CNEW to
allocate lto_elf_file object.
(lto_elf_file_close): Free lto_elf_file object after close.
* lto.h (struct lto_file_struct): Remove GTY marker.
* config-lang.in: Remove lto/lto.h and lto/lto.c from
gtfiles.
2008-08-20 Bill Maddox <maddox@google.com>
* lto.c (lto_read_decls): Provide dummy argument to input_tree
to conform to its new signature.
* lto-symtab.c (lto_symtab_merge_decl): Do not invoke ggc_free
on discarded node here, now called in global_vector_fixup.
2008-08-09 Bill Maddox <maddox@google.com>
* lto.c (preload_common_nodes): Verify that fileptr_type_node
has not been set to a front-end-specific value.
2008-08-05 Doug Kwan <dougkwan@google.com>
* Make-lang.in (lto-symtab.o): Add missing dependencies to fix
build breakage.
2008-07-30 Bill Maddox <maddox@google.com>
* lto.c (lto_materialize_function): Call lto_original_decl_name.
Remove obsolete comments.
(lto_read_decls): Remove initialization of deleted field data_in.global.
Tidy up comments.
(lto_main): Remove redundant initialization of section_hash_table.
* lto-elf.c: Removed obsolete comments.
* lto.h: Tidy up comments.
* lto-symtab.c (lto_least_common_multiple): New function.
(lto_symtab_merge_decl): Merge variable alignments in some cases.
Tidy up comments.
2008-07-25 Diego Novillo <dnovillo@google.com>
Bill Maddox <maddox@google.com>
* lto.c: Re-order include files.
Include lto-section-out.h.
(preload_common_nodes): Add debugging output.
Add new local INDEX_TABLE.
Call preload_common_node.
* Make-lang.in (lto.o): Add dependency on lto-section-out.h
2008-07-13 Bill Maddox <maddox@google.com>
* lto.c (lto_read_decls): Cast pointer to const char * to avoid
unwanted scaling during pointer addition.
2008-07-11 Bill Maddox <maddox@google.com>
Diego Novillo <dnovillo@google.com>
* lto.c (lto_read_decls): Fix C++ compatibility warnings.
Make code const-correct.
(lto_file_read): Fix C++ compatibility warnings.
(lto_read_section_data): Fix C++ compatibility warnings.
(lto_get_section_data): Use CONST_CAST to avoid warning when
const pointer passed to free.
* lto-elf.c (lto_elf_build_section_table): Fix C++
compatibility warnings.
(lto_elf_append_data): Fix C++ compatibility warnings. Use CONST_CAST
to avoid warning assigning const pointer to d_buf field of Elf_Data.
(lto_get_current_out_file): Fix C++ compatibility warnings.
2008-07-11 Diego Novillo <dnovillo@google.com>
* Make-lang.in (lto-warn): Define.
2008-07-03 Simon Baldwin <simonb@google.com>
* lto.c (lto_read_decls): Wrapped debug-only data items within #ifdef
LTO_STREAM_DEBUGGING.
2008-06-27 Ollie Wild <aaw@google.com>
* lto-elf.c (lto-section-out.h): New include.
(struct lto_elf_file): Remove bits member. Add scn, shstrtab_stream,
and data members.
(cached_file_attrs): New static variable.
(lto_elf_get_shdr, lto_elf_free_shdr): Remove elf_file parameter.
Use cached_file_attrs for checking bits.
(lto_elf_build_section_table): Remove elf_file argument from
lto_elf_get_shdr and lto_elf_free_shdr calls.
(DEFINE_INIT_SHDR): New macro.
(init_shdr32, init_shdr64): New functions defined via the
DEFINE_INIT_SHDR macro.
(lto_elf_begin_section_with_type): New function.
(lto_elf_begin_section): New function.
(lto_elf_append_data): New function.
(lto_elf_end_section): New function.
(DEFINE_VALIDATE_EHDR): New macro.
(validate_ehdr32, validate_ehdr64): New functions defined via the
DEFINE_VALIDATE_EHDR macro.
(validate_file): New function.
(DEFINE_INIT_EHDR): New macro.
(init_ehdr32, init_ehdr64): New functions defined via the
DEFINE_INIT_EHDR macro.
(init_ehdr): New function.
(lto_elf_file_open): Add support for writable files. Move some
validation logic to validate_file.
(lto_elf_file_close): Add support for writable files. Write file data
and free data blocks.
(current_out_file): New static variable.
(lto_set_current_out_file): New function.
(lto_get_current_out_file): New function.
* lto.c (lto_main): Add writable argument to lto_elf_file_open calls.
Add temporary initialization for testing ELF serialization.
* lto.h (lto-section-out.h): New include.
(struct lto_file_struct): Slight modification to comment.
(lto_elf_file_open): Add writable parameter.
(lto_elf_begin_section): New function declaration.
(lto_elf_append_data): New function declaration.
(lto_elf_end_section): New function declaration.
(lto_set_current_out_file, lto_get_current_out_file): New function
declarations.
* lto-lang.c (LANG_HOOKS_BEGIN_SECTION): Set as lto_elf_begin_section.
(LANG_HOOKS_APPEND_DATA): Set as lto_elf_append_data.
(LANG_HOOKS_END_SECTION): Set as lto_elf_end_section.
* Make-lang.in (LTO_H): Add lto-section-out.h.
2008-06-12 Ollie Wild <aaw@google.com>
* lto.h (struct lto_file_vtable_struct): Remove.
(struct lto_file_struct): Remove vtable member.
* lto-elf.c (lto_file_init): Remove vtable argument.
(lto_elf_map_optional_lto_section): Remove.
(lto_elf_unmap_section): Remove.
(lto_elf_file_vtable): Remove.
(lto_elf_file_open): Remove lto_elf_file_vtable argument from
lto_file_init call.
(lto_elf_find_section_data): Remove.
2008-06-11 Ollie Wild <aaw@google.com>
* lto.c (lto_file_read): Add const qualifier to data variable.
2008-06-11 Diego Novillo <dnovillo@google.com>
Merge from lto-streamber sub-branch.
2008-06-04 Ollie Wild <aaw@google.com>
* lto.c: Remove inclusion of dwarf2.h and dwarf2out.h.
* Make-lang.in (lto.o): Remove dependency on dwarf2.h.
2008-05-28 Bill Maddox <maddox@google.com>
Replace the DWARF reader in the LTO front-end.
* lto.c: Include lto-tree-in.h, lto-tags.h.
(enum DWARF2_class, DW_cl_constant, struct
DWARF2_form_data, struct lto_context,
lto_fd_init, lto_info_fd_init,
lto_abbrev_fd_init, lto_info_fd_close,
lto_file_init, lto_file_close,
lto_file_corrupt_error, lto_abi_mismatch_error,
LTO_CHECK_INT_VAL, LTO_READ_TYPE,
lto_read_uleb128, lto_read_sleb128,
lto_read_initial_length, lto_abbrev_read_attrs,
lto_abbrev_read, lto_abbrev_read_lookup,
lto_read_section_offset,
lto_read_comp_unit_header, find_cu_for_offset,
lto_get_file_name,
lto_resolve_reference,lto_read_form,
attribute_value_as_int,
make_signed_host_wide_int,
attribute_value_as_constant, lto_cache_hash,
lto_cache_eq, lto_cache_store_DIE,
lto_cache_lookup_DIE, lto_find_integral_type,
lto_find_integral_type_1,
LTO_BEGIN_READ_ATTRS_UNCHECKED,
LTO_BEGIN_READ_ATTRS, LTO_END_READ_ATTRS,
lto_unsupported_attr_error, lto_get_identifier,
lto_read_referenced_type_DIE,
lto_read_compile_unit_DIE,
lto_read_array_type_DIE,
lto_read_structure_union_class_type_DIE,
lto_read_enumerator_DIE,
lto_read_enumeration_type_DIE,
lto_read_only_for_child_DIEs,
lto_read_only_for_child_DIEs,
lto_read_member_DIE, lto_read_abbrev,
lto_read_variable_formal_parameter_constant_DIE,
lto_get_body): Removed.
(preload_common_nodes): New function.
(lto_read_decls): Convert for new global streamer.
(lto_materialze_file_data,
lto_read_subroutine_type_subprogram_die,
lto_read_unspecified_parameters_DIE,
lto_read_typedef_DIE,
lto_read_pointer_reference_type_DIE,
lto_read_subrange_type_DIE,
lto_read_base_type_DIE,
lto_read_const_volatile_restrict_type_DIE,
lto_read_namespace_DIE,
lto_read_unspecified_type_DIE, lto_read_DIE,
lto_read_child_DIEs, lto_collect_child_DIEs):
Removed.
(lto_info_read, lto_set_cu_context): Removed.
(lto_file_read): Convert for new global streamer.
(lto_resolve_type_ref, lto_read_DIE_at_ptr,
lto_resolve_var_ref, lto_resolve_fn_ref,
lto_resolve_field_ref, lto_resolve_typedecl_ref,
lto_resolve_namespacedecl_ref): Removed.
(lto_file_init, lto_file_close): Moved to lto-elf.c.
* lto-tree.h (lto_symtab_merge_var,
lto_symtab_mergee_fun): Declare here.
* lto-elf.c (lto_file_init, lto_file_close): Moved from lto.c.
(lto_elf_file_open): Removed code to read DWARF debug sections.
* lto.h (lto_context, DWARF2_attr, DWARF2_abbrev,
DWARF2_CompUnit, lto_die_ptr,
lto_die_cache_entry, lto_fd, lto_info_fd,
lto_abbrev_fd): Removed.
(lto_file): Removed debug_info and debug_abbrev fields.
(lto_ref): Removed.
(lto_file_init, lto_file_close,
lto_resolve_type_ref, lto_resolve_var_ref,
lto_resolve_fn_ref, lto_resolve_field_ref,
lto_resolve_typedecl_ref,
lto_resolve_namespacedecl_ref,
lto_get_file_name): Removed declarations.
(lto_symtab_merge_var, lto_symtab_merge_fn):
Declarations moved to lto-tree.h.
* lto-symtab.c (lto_compatible_attributes_p):
Lobotomize this, as it barfs on "Hello, world!".
* lto-section-out.c: Include lto-tree-out.h.
(lto_hash_global_slot_node,
lto_eq_global_slot_node, preload_common_nodes,
write_global_stream, write_global_references):
New functions.
(produce_asm_for_decls): Convert for new global streamer.
* lto-section-out.h (lto_hash_global_slot_node,
lto_eq_global_slot_node): Declare.
2008-06-07 Kenneth Zadeck <zadeck@naturalbridge.com>
Jan Hubicka <jh@suse.cz>
* lto.c (sys/mman.h, tree-pass.h): New includes.
(lto_materialize_constructors_and_inits,
lto_materialize_function): Keeps length of section.
(lto_materialize_cgraph): Removed.
(lto_read_decls): Initialize fd field.
(lto_file_read): Different return type and removed much code to
lto_main.
(page_mask): New variable.
(lto_read_section_data, get_section_data, free_section_data): New
functions.
(lto_main): Now calls pass manager, sets the hooks so that the ipa
passes can get the section data.
2008-05-27 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto.h (lto_read_decls): Made local.
(lto_input_function_body, lto_input_constructors_and_inits,
lto_input_cgraph): Declarations moved to lto-section-in.h.
* lto-section-in.c: Moved to .. .
* lto-cgraph-in.c: Ditto.
* lto-section-in.h: Ditto.
* lto-function-in.c: Ditto.
* lto-lang.c (lto_handle_option): Added ATTRIBUTE_UNUSED to parms.
(lto_insert_block): Removed.
(LANG_HOOKS_INSERT_BLOCK): Removed.
* Make-lang.in (lto-cgraph-in.o, lto-function-in.o,
lto-section-in.o): Rules moved to lto/Makefile.in.
2008-05-16 Ollie Wild <aaw@google.com>
* lto-lang.c (tree-inline.h): Include.
(lto_post_options): New function.
(LANG_HOOKS_POST_OPTIONS): Define.
* lto-cgraph-in.c (overwrite_node): Set node->global.insns.
* lto-function-in.c (input_bb): Set TREE_BLOCK (stmt).
2008-05-13 Diego Novillo <dnovillo@google.com>
* lto-function-in.c (input_ssa_names): Call
make_ssa_name_fn instead of make_ssa_name.
2008-05-12 Diego Novillo <dnovillo@google.com>
* lto-cgraph-in.c (overwrite_node): Update references to
inline summary fields.
* lto-function-in.c (input_expr_operand): Do not handle
STRUCT_FIELD_TAG.
2008-05-09 Ollie Wild <aaw@google.com>
* lang.opt: New file.
* lto-lang.c (lto_init_options): New function.
(lto_handle_option): New function.
(lto_init): Move initialization of flag_unit_at_a_time to
lto_init_options.
(LANG_HOOKS_INIT_OPTIONS): Define.
(LANG_HOOKS_HANDLE_OPTION): Define.
2008-04-29 Ollie Wild <aaw@google.com>
* lto.c (lto_read_namespace_DIE): New function.
(lto_read_DIE): Add lto_read_namespace_DIE callback. Cache
NAMESPACE_DECL DIE's.
(lto_resolve_namespacedecl_ref): New function.
* lto.h (lto_resolve_namespacedecl_ref): New function.
* lto-section-in.c (lto_read_decls): Read namespace declarations.
* lto-section-in.h (struct lto_file_decl_data): Add namespace_decls
and num_namespace_decls.
* lto-function-in.c (input_expr_operand): Add NAMESPACE_DECL case.
* lto-lang.c (lto_init_ts): New function.
(LANG_HOOKS_INIT_TS): Set as lto_init_ts.
2008-04-16 Ollie Wild <aaw@google.com>
* lto-function-in.c (input_type_ref): Updated function description.
2008-04-16 Ollie Wild <aaw@google.com>
* lto-function-in.c (input_type_ref_1): New function.
(input_type_ref): Split into two functions.
(input_function): Add support for type contexts.
2008-04-16 Ollie Wild <aaw@google.com>
* lto.c (lto_materialize_function): Use DECL_ASSEMBLER_NAME to compute
section name
2008-04-16 Ollie Wild <aaw@google.com>
* lto.c (lto_read_compile_unit_DIE): Add DW_LANG_C_plus_plus to the
list of supported languages.
2008-03-25 Kenneth Zadeck <zadeck@naturalbridge.com>
Merge with mainline @133491.
2008-03-05 Kenneth Zadeck <zadeck@naturalbridge.com>
Jan Hubicka <jh@suse.cz>
* lto.c (lto_info_fd_init, lto_info_fd_close): Get rid of
fd->unmaterialized_fndecls.
(lto_get_file_name, lto_materialize_cgraph): New function.
(lto_materialize_constructors_and_inits,
lto_materialize_function): Read info directly from elf file.
(lto_file_read): Made local and initialize dictionary so that
other lto sections can be read without reprocessing the elf file.
(lto_main): Read all functions after all files have been processed
for their types, globals and cgraph.
* Make-lang.in (lto.o, lto-cgraph-in.c, lto-section-in): Changed
dependencies.
* lto-elf.c (lto_elf_file): Removed strtab, symtab fields.
(hash_name, eq_name, lto_elf_build_section_table): New functions.
(lto_elf_read_symtab): Removed function.
(lto_elf_file_open): Removed call to lto_elf_read_symtab.
* lto.h (lto_info_fd_struct): Removed unmaterialized_fndecls.
(lto_file_read): Made local.
(lto_get_file_name, lto_elf_build_section_table,
lto_input_cgraph):
New function.
* lto-section-in.c (lto_read_section_data, lto_get_section_data):
New functions.
(lto_read_decls): Get the file name.
* lto-cgraph-in.c: New file.
* lto-function-in.c (tag_to_expr): Stops at LTO_tree_last_tag.
(input_expr_operand, lto_read_body): Set lto_debug_context.tag_names.
(input_labels): Fixed latent sizeof issue.
(input_function): Build stmt array to set call sites into cgraph
edges.
(lto_read_body): Reset cfun->curr_properties.
* lto_section_in.h (lto_section_slot): New structure.
(section_hash_table.lto_file_decl_data): New field.
2008-02-09 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto.c (lto_read_variable_formal_parameter_const): Remove code to
reconstruct static initializers.
(lto_get_body, lto_materialize_function): Add lto_section_type as
a parameter.
(lto_materialize_constructors_and_inits,
lto_materialize_file_data): New function.
(lto_materialize_function,
lto_read_subroutine_type_subprogram_DIE): Renamed unmap_fn_body to
unmap_section and map_fn_body to map_section.
(lto_set_cu_context): Process functions and static inits
differently.
* Make-lang.in (LTO_H, lto/lto-function-in.o,
lto/lto-section-in.o): Update dependencies.
* lto/lto-elf.c (lto_elf_map_optional_lto_section): Add
lto_section_type parameter.
(lto_elf_unmap_fn_body): Renamed to lto_elf_unmap_section.
* lto.h (lto_file_vtable_struct): Removed two of the fields and
renamed the other two so that there is only one map function and
one unmap function and each takes a section type parameter.
(lto_read_function_body): Renamed to lto_input_function_body and
added file_data parameter.
(lto_read_var_init): Removed.
(lto_input_constructors_and_inits): New function.
* lto-section-in.c (lto_read_decls): New function.
* lto-function-in.c (data_in): Moved fields field_decls, fn_decls,
var_decls, type_decls, types to lto_file_decl_data.
(input_type_ref, input_expr_operand, lto_read_body): Get
field_decls, fn_decls, var_decls, type_decls, types from different
structure.
(input_globals, input_constructor, lto_read_var_init): Removed.
(input_constructors_or_inits): New function.
(lto_read_function_body, lto_input_constructors_and_inits):
Renamed to lto_input_function_body and takes file_data parameter.
* lto-section-in.h (lto_file_decl_data): New structure.
2008-01-28 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-function-in.c (input_globals.c): Changed input type to
lto_function_header.
(input_bb): Removed code to deserialize the stmt number.
(input_function): Renumber all stmts after they are input.
(lto_read_body, lto_read_function_body, lto_read_var_init):
Changed to used new header format and enum section_type.
*lto-lang.c (success): Removed.
2008-01-28 Nathan Froyd <froydnj@codesourcery.com>
* lto-elf.c (lto_elf_lookup_sym): Remove unused function.
(lto_elf_free_sym): Likewise.
* lto-elf.c (lto_elf_read_var_init): Remove unused function.
(lto_elf_build_init): Likewise.
2008-01-14 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c: Renamed to lto-function-in.c.
(input_1_unsigned): Moved to lto-section-in.c and renamed
lto_input_1_unsigned.
(input_uleb128): Moved to lto-section-in.c and renamed
lto_input_uleb128.
(input_widest_uint_uleb128): Moved to lto-section-in.c and renamed
lto_input_widest_uint_uleb128.
(input_sleb128): Moved to lto-section-in.c and renamed
lto_input_sleb128.
(input_integer): Moved to lto-section-in.c and renamed
lto_input_integer.
(debug_in_fun): Moved to lto-section-in.c and renamed
lto_debug_in_fun.
(input_block): Moved to lto-section-in.h and renamed
lto_input_block.
(input_expr_operand): Fixed to allow lists with more than one
element.
* lto-section-in.h: New file.
* lto-section-in.c: New file with changes from above.
* Make-lang.in (lto-read.o): Renamed lto-function-in.c.
(lto-section-in.o): New rule.
2007-12-29 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_expr_operand): Mark static and external
VAR_DECLs as needed.
2007-12-29 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_integer): Use the correct shift amount.
2007-12-29 Nathan Froyd <froydnj@codesourcery.com>
* lto-lang.c (lto_pushdecl): Do nothing instead of aborting.
(LANG_HOOKS_NAME): Define.
2007-12-27 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_find_integral_type): Define as a macro. Rename the
original function to...
(lto_find_integral_type_1): ...this. Consult UNSIGNEDP if we
don't have a base type.
(lto_read_enumeration_type_DIE): Examine the values of the
enumeration to determine whether we can use an unsigned type for
the base type of the enumeration.
2007-12-24 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_structure_union_class_type_DIE): Set TYPE_MODE
and TYPE_ALIGN on UNION_TYPEs as soon as possible.
2007-12-22 Nathan Froyd <froydnj@codesourcery.com>
* lto-lang.c (lto_types_compatible_p): New function.
(LANG_HOOKS_TYPES_COMPATIBLE_P): Define.
2007-12-22 Nathan Froyd <froydnj@codesourcery.com>
Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Fixed uninitialize var warning.
(input_local_vars): Read in DECL_INITIAL and context for local
statics that need to be put in unexpanded_vars_list.
2007-12-21 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_real): Use a separate null-terminated buffer
for calling real_from_string.
(input_expr_operand): If we take the address of a FUNCTION_DECL,
tell cgraph that it's needed.
2007-12-19 Doug Kwan <dougkwan@google.com>
* lto.c (lto_read_base_type_DIE): Handle complex integer types.
2007-12-18 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_DIE): Call lto_read_only_for_child_DIEs instead.
(lto_file_read): Reset the members of 'context' every time we read
a toplevel DIE, with special attention to last_param_type.
2007-12-18 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_subroutine_type_subprogram_DIE): Initialize
'declaration'. Set the assembler name for non-public functions.
2007-12-17 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto_read.c (data_in.unexpanded_indexes): New array.
(input_local_var): Added code to read in unexpanded_var_list
indexes for variables. Only read in DECL_CHAIN field for
parameters.
(input_local_vars): Added code to rebuild unexpanded_var_list in
order using unexpanded_indexes.
(input_function): Added code to set DECL_CONTEXT for functions.
2007-12-13 Doug Kwan <dougkwan@google.com>
* lto.c (lto_read_pointer_reference_type_DIE): Handle optional name
in pointer and reference types.
2007-12-13 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_expr_operand): Use DECL_RESULT when reading a
RESULT_DECL.
2007-12-13 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_array_type_DIE): Return the cached DIE if we've
already read the DIE.
(lto_get_body): New function, split out from...
(lto_materialize_function): ...here. Call it.
(lto_read_subroutine_type_subprogram_DIE): Call lto_get_body to
determine DECL_EXTERNAL.
* lto-symtab.c (lto_symtab_merge_decl): Merge the DECL_RESULTs of
FUNCTION_DECLs when necessary. Use the type of the actual
function definition if we are unable to easily merge types. Ignore
spurious DECL_MODE mismatches on VAR_DECLs. Merge DECL_MODEs when
necessary.
2007-12-13 Nathan Froyd <froydnj@codesourcery.com>
* lto-lang.c (LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS): Define.
2007-12-12 Bill Maddox <maddox@google.com>
Revert
2007-12-07 Bill Maddox <maddox@google.com>
* lto.c (lto_str_fd_init): New function.
(lto_str_fd_close): New function.
(lto_file_init): Call lto_str_fd_init.
(lto_file_close): Call lto_str_fd_close.
(lto_str_read): New function. Read debug string table.
(lto_str_lookup): New function. Get string for debug
string table offset.
(lto_read_form): Recognize DW_FORM_strp.
(lto_file_read): Invoke lto_str_read.
* lto-elf.c (lto_elf_file_open): Read raw section data
for the .debug_str section, if present.
* lto.h (struct lto_str_fd_struct): New struct.
(struct lto_file_struct): Added new field DEBUG_STR
to hold the file descriptor for the debug string table.
2007-12-07 Bill Maddox <maddox@google.com>
* lto.c (lto_str_fd_init): New function.
(lto_str_fd_close): New function.
(lto_file_init): Call lto_str_fd_init.
(lto_file_close): Call lto_str_fd_close.
(lto_str_read): New function. Read debug string table.
(lto_str_lookup): New function. Get string for debug
string table offset.
(lto_read_form): Recognize DW_FORM_strp.
(lto_file_read): Invoke lto_str_read.
* lto-elf.c (lto_elf_file_open): Read raw section data
for the .debug_str section, if present.
* lto.h (struct lto_str_fd_struct): New struct.
(struct lto_file_struct): Added new field DEBUG_STR
to hold the file descriptor for the debug string table.
2007-12-07 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_cfg): Call init_empty_tree_cfg_for_function.
Grow the basic_block_info and label_to_block_map vectors if
necessary. Read in the block chain.
2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_DIE): Set TYPE_ALIAS_SET where necessary.
2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_form): Add DW_cl_address for DW_AT_const_value.
2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_expr_operand): Don't check for MTAGs.
(lto_read_body): Don't declare PROP_alias.
2007-12-06 Nathan Froyd <froydnj@codesourcery.com>
* lto-symtab.c (lto_symtab_merge_decl): Handle FUNCTION_DECLs without
argument type information.
2007-12-03 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Set
TREE_THIS_VOLATILE if the associated type is a volatile type.
(lto_materialize_function): Remove call to init_ssa_operands.
* lto-read.c (input_expr_operand): Add SSA_NAME_VAR as a referenced
variable when reading an SSA_NAME. Do the same when reading a
RESULT_DECL, a RETURN_EXPR, or an MTAG.
(input_cfg): Call init_ssa_operands.
(input_ssa_names): Set the default def of an SSA_NAME if necessary.
Move call to init_tree_ssa...
(lto_read_body): ...here. Use push_cfun and pop_cfun. Call
add_referenced_var on any variables referenced from the body of the
function. Inform the rest of the compiler we are in SSA form and
inform later passes about the current properties.
2007-11-30 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_materialize_function): Add FIXME.
2007-11-29 Nathan Froyd <froydnj@codesourcery.com>
* lto-lang.c (enum built_in_attribute): New enum.
(flag_no_builtin, flag_no_nonansi_builtin, flag_isoc94, flag_isoc99,
built_in_attributes): New variables.
(def_builtin_1): New function.
(lto_define_builtins): #define DEF_BUILTIN and include builtins.def.
2007-11-28 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Set
DECL_SOURCE_LOCATION for debugging purposes.
(lto_read_member_DIE): Set DECL_SOURCE_LOCATION. If we have read a
bitfield, use the type specified by the DIE for TREE_TYPE and defer
laying out the decl until later.
(lto_read_subroutine_type_subprogram_DIE): Compare the function's
name with DECL_ASSEMBLER_NAME. Set DECL_SOURCE_LOCATION and
TREE_ADDRESSABLE.
* lto-read.c (input_expr_operand): Set TREE_ADDRESSABLE on the
operand of an ADDR_EXPR.
* lto-lang.c (enum lto_builtin_type): New enum.
(builtin_type): New typedef.
(builtin_types, string_type_node, const_string_type_node,
wint_type_node, intmax_type_node, uintmax_type_node,
signed_size_type_node): New variables.
(def_fn_type, builtin_type_for_size, lto_define_builtins,
lto_build_c_type_nodes): New functions.
(lto_init): Initialize builtin types.
(lto_set_decl_assembler_name): Let the target machine mangle the
name if the decl is TREE_PUBLIC, otherwise uniquify it.
2007-11-21 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Don't
set TREE_ADDRESSABLE. Do set DECL_COMDAT. Set TREE_READONLY if
the type is a constant type. Set the assembler name and inform
the rest of the compiler about the new decl if the decl is not
public.
(lto_read_subroutine_type_subprogram_DIE): Don't check for equivalency
of DECL_ASSEMBLER_NAME when determining if we have a builtin. Don't
try to read in function bodies for functions that already have bodies.
* lto-symtab.c (lto_same_type_p): Check for unbounded array
equivalency.
(lto_symtab_merge_decl): Don't merge decls that aren't TREE_PUBLIC.
Check for whether we matched a builtin function type before calling
lto_same_type_p on the generated type. Permit cases where the
declaration of an array is unbounded, but the definition is bounded.
Don't combine TREE_PUBLIC flags. Copy over DECL_SIZE and
DECL_SIZE_UNIT if necessary.
2007-11-16 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Get types right
for COMPLEX_CST.
2007-11-16 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (make_new_block, input_cfg): Properly set
n_basic_blocks.
2007-11-16 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_array_type_DIE): Handle DIEs with DW_AT_GNU_vector
set properly by building a VECTOR_TYPE instead of an ARRAY_TYPE.
2007-11-16 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_base_type_DIE): Use make_bitfield_integer_type to
construct the integer type for bitfields.
2007-11-16 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (data_in.current_node_has_loc): Removed.
(input_line_info): Returns true if node needs line set.
(set_line_info): Always sets line if called.
(clear_line_info): Removed reference to current_node_needs_loc.
(input_expr_operand): Keeps track locally if current node needs a loc.
(input_local_var): Added code to handle DECL_INITIAL for
static local vars. Only set loc if necessary.
2007-11-15 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_subroutine_type_subprogram_DIE): Fix thinko'd
DECL_CONTEXT.
2007-11-15 Nathan Froyd <froydnj@codesourcery.com>
* lto.c: Include langhooks.h.
(lto_find_integral_type): Rework logic to handle the case where
got_byte_size is true, but the bitsize requested and that of the
base_type doesn't match.
(lto_read_variable_formal_parameter_constant_DIE): Only check for
asm_name if we are creating a VAR_DECL.
(lto_materialize_function): Set DECL_EXTERNAL if we can't find a
definition.
(lto_read_subroutine_type_subprogram_DIE): Check for a builtin
function reference and use the builtin's decl if so. Set the
DECL_CONTEXT of the RESULT_DECL for the function.
* lto-lang.c (registered_builtin_fndecls): New variable.
(lto_getdecls): Return it.
(lto_builtin_function): Chain the new decl onto
registered_builtin_fndecls.
2007-11-15 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (process_tree_flags, lto_static_init_local):
Renamed to ADD_CLASS_EXPR_FLAG. ADD_CLASS_DECL_FLAG New Macro.
(input_line_info, clear_line_info): Fixed new line number code.
(input_expr_operand): Added type to SWITCH_EXPR.
(lto_read_body): Properly initialized data_in.
Clear line info when leaving.
2007-11-13 Diego Novillo <dnovillo@google.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE):
Initialize ARTIFICIAL.
(lto_read_subroutine_type_subprogram_DIE): Initialize
SAVED_SCOPE.
* lto-read.c (set_line_info): Remove ; from calls to
LINEMAP_POSITION_FOR_COLUMN.
2007-11-13 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_type_ref): Renamed from get_type_ref.
(input_expr_operand, input_local_var): Renamed get_type_ref to
input_type_ref.
(input_expr_operand): Get the types correct for
vector-cst. Get SSA_NAME_DEF_STMT correct for return_exprs.
2007-11-13 Doug Kwan <dougkwan@google.com>
* lto-read.c (input_widest_uint_uleb128): New function.
(input_tree_flags, process_tree_flags, input_line_info,
input_expr_operand, input_local_var, input_phi, input_ssa_names):
Change to use lto_flags_type and BITS_PER_LTO_FLAGS_TYPES instead of
unsigned HOST_WIDE_INT and HOST_BITS_PER_WIDE_INT.
(lto_static_init_local): Add code to assert that lto_flags_type is
wide enough.
2007-11-13 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_array_type_DIE): Handle DW_AT_GNU_vector.
(lto_read_subroutine_type_subprogram_DIE): Handle
DW_AT_static_link and DW_AT_specification. Return the
specification if present.
(lto_read_base_type_DIE): Handle DW_ATE_complex_float.
2007-11-13 Nathan Froyd <froydnj@codesourcery.com>
* lto-lang.c: Include target.h.
(registered_builtin_types): New variable.
(lto_type_for_mode): Increase number of modes handled.
(lto_builtin_function): Fix argument list and return the decl.
(lto_register_builtin_type): New function.
(lto_init): Initialize target builtins and language-independent
nodes.
(LANG_HOOKS_REGISTER_BUILTIN_TYPE): Define.
2007-11-13 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Added code to properly handle
index filed. Added new RANGE_EXPR case.
2007-11-11 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (ADD_FUNC_FLAG): Deleted macro.
(data_in): Added current_node_has_loc field.
(input_line_info, set_line_info, clear_line_info): Added a support
for USE_MAPPED_LOCATION and not adding line numbers to nodes that
did not have on on the source side.
(input_expr_operand): Make sure that GIMPLE_MODIFY_STMTS get line
numbers too.
2007-11-09 Doug Kwan <dougkwan@google.com>
* lto-read.c (input_expr_operand): Change type of operand 2 of
BIT_FIELD_REF expression to be bitsizetype instead of sizetype.
2007-11-09 Nathan Froyd <froydnj@codesourcery.com>
* lto.c: Include lto-tree.h. Effect small spaces->tabs cleanup.
(lto_read_variable_formal_parameter_constant_DIE): Transfer bits
from a DW_AT_specification or DW_AT_abstract_origin attribute to
the new decl we are creating. Move informing the middle end about
the new decl to...
(lto_main): ...here. Inform the middle end about global variables
after we have read in all the input files.
* lto-symtab.c (lto_symtab_merge_decl): We really do need to merge
variables with internal linkage, so delete the check for internal
linkage. Combine TREE_PUBLIC flags.
2007-11-08 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_subroutine_type_subprogram_DIE): Handle
DW_AT_decl_line.
* lto-symtab.c (lto_symtab_merge_decl): Handle redefinition of a
builtin specially. Move check for attribute compatibility
earlier.
2007-11-07 Nathan Froyd <froydnj@codesourcery.com>
* Make-lang.in (lto/lto.o): Depend on gt-lto-lto.h.
* config-lang.in (gtfiles): Add lto.h and lto.c.
* lto-elf.c: Include ggc.h.
(lto_elf_file_open): Allocate elf_file from GC memory.
* lto.c: Include tree-ssa-operands.h and gt-lto-lto.h
(lto_info_fd_init): Allocate the die_cache and unmaterialized_fndecls
in GC memory.
(lto_info_fd_close): Free unmaterialized_fndecls from GC memory.
(lto_file_close): Free file from GC memory.
(lto_cache_store_DIE): Allocate the new entry in GC memory.
(lto_read_member_DIE): Fix declaration.
(lto_read_subroutine_type_subprogram_DIE): unmaterialized_fndecls lives
in GC memory.
(current_lto_file): New variable.
(lto_main): Use it.
(DWARF2_attr, DWARF2_abbrev, lto_die_ptr, DWARF2_CompUnit,
lto_die_cache_entry): Move to...
* lto.h: ...here and add GTY markers as appropriate. Delete forward
declarations accordingly.
(struct lto_file_struct): Declare.
(lto_file_vtable): Use it instead of lto_file.
2007-11-06 Alon Dayan <alond@il.ibm.com>
Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (process_flags, lto_static_init_local):
read flags of VAR_DECL and FUNCTION_DECL of size>1.
change global array num_flags_for_code to flags_length_for_code.
(set_line_info): Make decls work in USE_MAPPED_LOCATION mode.
2007-11-05 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_structure_union_class_type_DIE): Use proper record
layout functions to compute information about the newly constructed
type.
2007-11-02 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_expr_operand): Change the LTO_return_expr1
case to use DECL_RESULT if necessary.
2007-11-01 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_tree_list): Removed.
(input_tree_flags): Added parameter to force flags no matter what
tree code.
(input_expr_operand): Added parameter to input_tree_flags.
Added case for IDENTIFIER_NODE and TREE_LIST. Changed ASM to call
input_expr_operand rather than input_tree_lists.
(input_local_var): Use input_expr_operand to read attributes
rather then input_tree_list.
(input_phi, input_ssa_names): Added parameter to input_tree_flags.
2007-10-31 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_typedef_DIE): Fix comment typo.
(lto_resolve_typedecl_ref): Fetch the referred-to type and build a fake
TYPE_DECL for it.
* lto-read.c (lto_read_body): Use correct sizes for calculating
type_decls_offset and types_offset.
2007-10-30 Nathan Froyd <froydnj@codesourcery.com>
* lto-tree.h (union lang_tree_node): Change GTY description to chain
with GENERIC_NEXT.
* config-lang.in (gtfiles): Add lto-lang.c.
* lto-lang.c: Include gt-lto-lto-lang.h.
* Make-lang.in (lto/lto-lang.o): Add dependency on gt-lto-lto-lang.h
(lto/lto-symtab.o): Depend on LTO_H instead of TREE_H.
(lto/lto-read.o): Likewise.
2007-10-29 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (data_in): Added type_decls and current_col fields.
(string_slot): New type to hold canonized file name.
(hash_string_slot_node, eq_string_slot_node, canon_file_name,
input_line_info, set_line_info, clear_line_info): New functions.
(file_name_hash_table): New hash table.
(input_local_var, input_labels, input_local_vars_index,
input_local_var, input_local_vars, input_ssa_names): Reorganized parameters.
(input_uleb128): Changed type of byte var.
(input_expr_operand): Large number of changes to get line numbers
correct. Added TYPE_DECL case.
(input_globals): Added code to get TYPE_DECLs processed.
(input_local_var): Added code to process line numbers and
TREE_CHAIN and DECL_CONTEXT.
(input_function, input_constructor): Added call to
clear_line_number.
(lto_static_init_local): Added code to get line numbers correct.
(lto_read_body): Added code to get TYPE_DECLS read and to change
parameters to the calls above that had their parms reorganized.
2007-10-29 Nathan Froyd <froydnj@codesourcery.com>
* lto.h (lto_resolve_typedecl_ref): Declare.
* lto.c (lto_resolve_typedecl_ref): New function.
2007-10-29 Mark Mitchell <mark@codesourcery.com>
Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_subroutine_type_subprogram_DIE): Read the child
DIEs even if we find an abstract origin for this DIE.
2007-10-29 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_subroutine_type_subprogram_DIE): Build the
RESULT_DECL slightly earlier. Only remember the decl for later
if we successfully merge declarations.
2007-10-24 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Give label_values the proper
context and provide switch statements with a default type.
2007-10-23 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (lto_read_body): Move call to init_ssa_operands...
* lto.c (lto_materialize_function): ...to here.
2007-10-22 Nathan Froyd <froydnj@codesourcery.com>
* lto.h (struct lto_info_fd): Add field unmaterialized_fndecls.
* lto.c (lto_info_fd_init): Initialize it.
(lto_info_fd_close): Free it.
(lto_materialize_function): New function.
(lto_read_subroutine_type_subprogram_DIE): Save the result decl on
unmaterialized_fndecls.
(lto_file_read): Read in all the function bodies after we have read
all of the DWARF info.
* lto-read.c (lto_read_body): Call init_ssa_operands if we are
reading a function body.
2007-10-20 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_tree_flags): Renamed from input_flags to be
semetric with output_tree_flags. Added call to log flags.
(process_tree_flags): Renamed from process_flags. Fixed a lot of
type issues to make everything consistent with flags being
unsigned HOST_WIDE_INTS.
(input_expr_operand): Added call to
recompute_tree_invariant_for_addr_expr.
(input_local_var): Added debugging for tree_chains. Now calls
input_tree_flags.
(input_phi): Made flags unsigned HOST_WIDE_INT.
(input_ssa_names): Now calls input_tree_flags.
(lto_read_body): Now sets cfun.
(lto_read_function_body): Now sets current_function_pointer.
2007-10-19 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Check
definitively whether SPECIFICATION or ABSTRACT_ORIGIN exist before
inspecting fields within.
(lto_read_DIE_at_ptr): Delete check for null result; let callers
handle this appropriately.
2007-10-19 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Handle
DW_AT_abstract_origin properly. Ensure that we're not dealing with
both DW_AT_abstract_origin and DW_AT_specification.
(lto_read_subroutine_type_subprogram_DIE): Handle
DW_AT_abstract_origin.
(lto_read_DIE): Use lto_read_only_for_child_DIEs for labels.
(lto_read_DIE_at_ptr): Define as static to match declaration.
Lookup the PTR in the cache before reading it from the file.
(lto_resolve_var_ref): Adjust accordingly.
(lto_resolve_fn_ref): Adjust accordingly. Tweak comment.
(lto_resolve_field_ref): Adjust accordingly. Tweak comment.
2007-10-19 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_DIE_at_ptr): New function.
(lto_resolve_var_ref): Use it.
(lto_resolve_fn_ref): Use it.
(lto_resolve_field_ref): Use it.
(lto_read_variable_formal_parameter_constant_DIE): Follow
DW_AT_specification and return the associated decl when appropriate.
2007-10-18 Nathan Froyd <froydnj@codesourcery.com>
* lto-lang.c (lto_type_for_mode): Move after lto_type_for_size.
Implement for scalar integer modes.
(lto_init): Initialize size_type_node.
2007-10-18 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Remove ssa name asserts.
(input_local_var): Add chaining for params.
(input_ssa_names): Add cfun parameter.
(input_function): Remove unnecessary else.
2007-10-17 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_only_for_child_DIEs): Mark die parameter as unused.
(lto_resolve_var_ref): Use proper types.
(lto_resolve_fn_ref): Likewise.
(lto_resolve_field_ref): Likewise.
2007-10-17 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (input_expr_operand): Remove case.
2007-10-17 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_only_for_child_DIEs): New function.
(lto_read_DIE): Use it for lexical_block and inlined_subroutine DIEs.
* lto-elf.c (lto_elf_map_lto_section): Remove.
(lto_elf_file_vtable): Use lto_elf_map_optional_lto_section instead.
* lto-read.c (input_expr_operand): Assert that we never read a NULL
SSA_NAME. Add missing case for mechanical codes.
(input_cfg): Use basic_block_info_for_function instead of
basic_block_info.
2007-10-16 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_sleb128, input_integer): Use proper casts.
(input_list): Renamed input_tree_list and modified to follow same
protocol as lto-function-out.c:output_tree_list.
(input_expr_operand): Make asm operands use input_tree_list.
(input_local_var): Now uses input_tree_list.
(lto_read_body): Change placement for setting context of debug_labels.
2007-10-16 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_real): Output debugging in proper order.
(input_integer): Compute bit lengths properly.
(input_list): Clean up declaration.
(input_expr_operand): Change calls to input_real to match fix.
Make reading of LTO_bit_field_ref1 match output.
(input_local_var): Make reading of attributes match what is being
written.
(dump_debug_stream): Also print char in hex.
(debug_out_fun): Fix signed unsigned mismatch.
2007-10-10 Nathan Froyd <froydnj@codesourcery.com>
* lto.c (lto_read_form): Handle DW_AT_MIPS_linkage_name and
DW_AT_GNU_vector specially, as they are not contiguous with the
specified set of attribute names. Use class_mask to check for
errors at the end of the function
(lto_resolve_var_ref): Read the DIE if it is not cached.
(lto_resolve_fn_ref): Likewise.
(lto_resolve_field_ref): Likewise.
2007-10-05 Nathan Froyd <froydnj@codesourcery.com>
* lto.c: Include dwarf2out.h.
(lto_cache_store_DIE): Assert that we never change the value.
(LTO_BEGIN_READ_ATTRS): Print an informative error message.
(lto_read_compile_unit_DIE): Handle DW_AT_entry_pc.
(lto_read_array_type_DIE): Don't error on ndims == 0; build a
sensible type instead.
(lto_read_structure_union_class_type_DIE): Store the newly
created type prior to reading the members of the structure to
avoid infinite recursion. Avoid computing types and alignments
for structures whose sizes are unknown.
(lto_read_variable_formal_parameter_const): Handle DW_AT_artificial
and set DECL_ARTIFICIAL accordingly. Ignore DW_AT_abstract_origin,
DW_AT_const_value, and DW_AT_specification.
(lto_read_subroutine_type_subprogram_DIE): Handle DW_AT_declaration.
Return early if we have already constructed the function type.
(lto_read_typedef_DIE): Check to see if the type has been cached
already. Cache the type before reading any children.
(lto_read_const_volatile_restrict_type_DIE): Handle DW_AT_name.
(lto_read_DIE): Unset context->skip_non_parameters around reading
the DIE.
(lto_resolve_fn_ref): Delete trailing whitespace.
2007-09-11 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Added type for STRING_CST.
2007-09-10 Nathan Froyd <froydnj@codesourcery.com>
* lto-read.c (lto_read): Set the type of the newly created CALL_EXPR.
2007-09-07 Nathan Froyd <froydnj@codesourcery.com>
* lto-lang.c (signed_and_unsigned_types): New variable.
(lto_type_for_size): Consult signed_and_unsigned_types to find
an approprite type, creating it if necessary.
(lto_set_decl_assembler_name): Add actual method body.
2007-09-06 Jim Blandy <jimb@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): If we
can't find a var init for this variable, leave its DECL_INITIAL.
* lto-elf.c (lto_elf_map_optional_lto_section): Renamed from
lto_elf_map_fn_body.
(lto_map_lto_section): New function.
(lto_elf_file_vtable): Use lto_elf_map_lto_section for function
bodies, and lto_elf_map_optional_lto_section for variable
initializers.
(lto_elf_find_section_data): Quietly return NULL if the section is
missing.
(lto_elf_file_open): Check for a NULL from lto_elf_find_section_data.
* lto-elf.c (lto_elf_find_section_data): Remove dead code.
* lto-read.c (lto_read_body): Doc fix.
2007-08-29 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (fun_in): Renamed to data_in.
(input_expr_operand, input_local_var, input_string_internal,
input_string, input_real, input_list, get_label_decl,
get_type_ref, input_expr_operand, input_globals, input_labels,
input_local_vars_index, input_local_var, input_local_vars,
input_cfg, input_phi, input_ssa_names, input_bb, ): Renamed fun_in to data_in.
(input_constructor): New function.
(lto_read_function_body): Renamed to lto_read_body and generalized
to handle both functions and constructors.
(lto_read_function_body, lto_read_var_init): New function.
2007-08-28 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Assert that there really is a
FUNCTION_DECL.
(input_globals): Removed checks on 0 section.
2007-08-28 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (fun_in): Added local_decls_index and
local_decls_index_d.
(input_expr_operand): Changed inputting of PARM_DECLs and VAR_DECLs.
(input_globals): Enabled code to handle FIELD_DECLs.
(input_local_vars_index, input_local_vars): New function.
(input_local_var): Changed to allow locals to be input randomly.
(lto_read_function_body): Added code to input the
local_decls_index and to free various structures.
2007-08-17 Jim Blandy <jimb@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Remove
ATTRIBUTE_UNUSED from 'die' formal.
Use enum LTO_tags where appropriate, instead of 'unsigned int'.
* lto-read.c (input_record_start): Fix return type, type of 'tag'.
(input_list): Fix type of 'tag'.
(input_expr_operand): Fix type of 'tag' argument. Update
declaration. Fix type of 'ctag'. Add default case to switch,
since the type of the switched value is now an enum.
(input_local_vars): Fix type of 'tag'.
(input_bb): Fix type of 'tag' argument.
(input_function): Fix type of 'tag' argument.
2007-08-16 Jim Blandy <jimb@codesourcery.com>
* lto.c (lto_read_member_DIE): Record the tree we create in
fd->die_cache. (Our 'die' argument is no longer unused.)
(lto_resolve_field_ref): New function.
* lto.h (lto_resolve_field_ref): New declaration.
2007-08-15 Jim Blandy <jimb@codesourcery.com>
* lto-read.c (lto_read_var_init): Mark arguments as unused.
2007-08-07 Jim Blandy <jimb@codesourcery.com>
* lto.c (lto_read_form): Complete attr_classes table.
(DWARF2_form_data): Doc fix.
2007-08-05 Mark Mitchell <mark@codesourcery.com>
* lto.h (lto_file_vtable): Remove read_var_init. Add map_var_init
and unmap_var_init.
(lto_read_var_init): Declare.
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Use new
interface for reading variable initializers.
* lto-elf.c (lto_elf_read_var_init): Remove.
(lto_elf_file_vtable): Update initializer.
(lto_elf_read_var_init): Add comment about unused-ness.
* lto-read.c (lto_read_var_init): New.
* lto.c (lto_read_form): Add entry for DW_AT_inline.
2007-08-02 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (lto_read_function_body): Moved declaration of fn
outside of ifdef.
2007-08-01 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_uleb128, input_string_internal, input_real,
input_integer, input_record_start, input_list, get_type_ref,
input_flags, input_expr_operand, input_expr_operand,
input_expr_operand, input_local_vars, input_cfg, input_phi,
input_ssa_names, input_bb, input_function): Added semicolons.
2007-07-31 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_globals): Remove debugging.
(input_function): Set DECL_ARGUMENTS.
2007-07-31 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_expr_operand): Fixed code for COND_EXEC,
RETURN_EXPR, MODIFY_EXPR and processing of flags.
(input_phi): Made work with operands other than SSA_NAMES and
fixed processing of flags.
(input_ssa_names): Initialize SSA_NAME_DEF_STMT to empty stmt.
(input_flags): New function.
* lto-lang.c (lto_init): Changed state of in_lto_p.
2007-07-24 Mark Mitchell <mark@codesourcery.com>
* lto-tree.h (lto_varargs_cookie): Remove.
* lto.c (lto_context): Add last_parm_type, varargs_p, skip_all,
skip_non_parameters, skip_parameters.
(lto_varargs_cookie): Remove.
(lto_read_variable_formal_parameter_constant_DIE): Keep track of
parameter types.
(lto_read_abbrev): New function.
(lto_read_subroutine_type_subprogram_DIE): Make two passes over
child DIEs.
(lto_read_unspecified_parameters_DIE): Set context->varargs_p.
(lto_read_DIE): Use lto_read_abbrev. Honor skip_* flags.
(lto_file_read): Initialize new context fields.
* lto-lang.c (lto_type_for_mode): Return NULL_TREE.
(lto_unsigned_type): Remove.
(lto_signed_type): Likewise.
(lto_signed_or_unsigned_type): Likewise.
(lto_init): Do not create lto_varargs_cookie.
(LANG_HOOKS_UNSIGNED_TYPE): Do not define.
(LANG_HOOKS_SIGNED_TYPE): Likewise.
(LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE): Likewise.
2007-07-19 Jan Hubicka <jh@suse.cz>
* lto-read.c (lto_read_function_body): Produce empty scope block
to avoid crash.
2007-07-18 Mark Mitchell <mark@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Do not
process local variables.
(lto_read_subroutine_type_subprogram_DIE): Read child DIEs.
2007-07-13 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read.c (input_list, input_expr_operand): Added struct
function parameter.
(init_cfg, finalize_cfg): Removed function.
(input_expr_operand): Added SSA_NAME and GIMPLE_MODIFY_STMT cases.
(input_labels, input_local_vars): Now takes input_block parameter rather than
synthsyzing it.
(input_cfg, input_phi, input_ssa_names): New functions.
(input_bb): Now passes in input_blocks. Does not construct cfg
and processes the list of phi functions.
(input_function): Now builds both the cfg and ssa_names table.
(lto_read_function_body): Processes new header fields to construct
streams for the ssa_names and cfg and their debugging.
* lto/lto-lang.c (lto_init): Set in_lto_p.
2007-06-28 Mark Mitchell <mark@codesourcery.com>
* lto.h (lto_file_vtable): Add read_var_init.
* lto.c (lto_read_variable_formal_parameter_constant_DIE): Read
initializers.
(lto_main): Remove bogus asserts.
* lto-elf.c (tm.h): Include it.
(libiberty.y): Likewise.
(lto_elf_file): Add strtab and symtab. Rename
string_table_section_index to sec_strtab.
(lto_elf_file_vtable): Add lto_elf_read_var_init.
(lto_elf_get_shdr): New function.
(lto_elf_free_shdr): Likewise.
(lto_elf_find_section_data): Use them.
(lto_elf_read_symtab): New function.
(lto_elf_lookup_sym): Likewise.
(lto_elf_free_sym): Likewise.
(lto_elf_file_open): Tidy. Call lto_elf_read_symtab.
(lto_elf_built_init): New function.
(lto_elf_read_var_init): Likewise.
* Make-lang.in (lto/lto-elf.o): Depend on $(TM_H).
2007-06-26 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto-read (make_new_block): Initialize the stmt_list.
(lto_static_init_local): Add debugging for missing codes.
2007-06-26 Mark Mitchell <mark@codesourcery.com>
* lto.c (lto_read_subroutine_type_subprogram_DIE): Handle
unprototyped functions.
2007-06-23 Mark Mitchell <mark@codesourcery.com>
* lto.c (lto_read_variable_formal_parameter_constant_DIE):
Handle DW_AT_MIPS_linkage_name.
(lto_read_subroutine_type_subprogram): Likewise. Correct
compilation errors.
(lto_main): Remove incorrect assertions.
* lto-symbtab.c: Build function types out of TREE_LISTs.
* lto-elf.c (<libelf>): Check for HAVE_LIBELF_H.
* Make-lang.in (LTO_OBJS): Depend on attribs.o.
2007-06-21 Kenneth Zadeck <zadeck@naturalbridge.com>
* lto/lto-tree.h (lang_decl, lang_type, language_function): Added
dummy since ggc does not like empty structs.
* lto/lto-elf.c (libelf.h): Changed to libelf/libelf.h.
* lto/lto-read.c (ADD_CLASS_FLAG, ADD_EXPR_FLAG): Changed
expr->common to expr->base.
(make_new_block): Moved stmt_list to proper place.
2007-03-14 Robert Kennedy <jimbob@google.com>
Eliminate use of lang_hooks.set_decl_assembler_name from LTO
* lto.c (lto_read_subroutine_type_subprogram_DIE) Get DECL
assembler name from DWARF.
* lto-lang.c (lto_set_decl_assembler_name) New function.
2006-09-10 Mark Mitchell <mark@codesourcery.com>
* lto.h (lto_file_vtable): New structure.
(lto_file): Add vtable pointer.
(lto_file_init): Add vtable paramter.
(lto_read_function_body): New function.
(lto_symtab_merge_fn): New function.
* lto.c (lto_file_init): Add vtable parameter.
(lto_read_form): Fill in entries for DW_AT_prototyped,
DW_AT_frame_base.
(lto_read_subroutine_type_subprogram_DIE): New function.
(lto_read_DIE): Fill in entries for DW_TAG_subroutine_type and
DW_TAG_subprogram.
* lto-elf.c (lto_elf_vile_vtable): New variable.
(lto_elf_file_open): Pass it to lto_file_init.
(lto_elf_map_fn_body): New function.
(lto_elf_unmap_fn_body): Likewise.
* lto-read.c: New file.
* lto-symtab.c (lto_symtab_merge_fn): New function.
* lto-lang.c (LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION): Define to
tree_rest_of_compilation.
* Make-lang.in (LTO_OBJS): Add lto-read.o
(lto-read.o): New target.
2006-09-03 Mark Mitchell <mark@codesourcery.com>
* lto.c (<inttypes.h>): Don't include it.
(lto_context): Don't typedef it.
(lto_resolve_reference): New function.
(lto_read_form): Use it.
(lto_resolve_type_ref): New function.
(lto_resolve_var_ref): Likewise.
(lto_resolve_fn_ref): Likewise.
* lto.h (<inttypes.h>): Include it.
(lto_context): New type.
(lto_ref): New structure.
(lto_resolve_type_ref): Declare.
(lto_resolve_var_ref): Likewise.
(lto_resolve_fn_ref): Likewise.
2006-08-18 Mark Mitchell <mark@codesourcery.com>
* lang-specs.h: New file.
2006-08-14 Mark Mitchell <mark@codesourcery.com>
* lto.c (lto_info_fd_init): Allocate the DIE cache.
(lto_info_fd_close): Deallocate it.
(lto_die_cache_entry): New structure.
(lto_cache_hash): New function.
(lto_cache_eq): Likewise.
(lto_cache_store_DIE): Likewise.
(lto_cache_lookup_DIE): Likewise.
(lto_read_referenced_type_DIE): Use the cache.
(lto_read_pointer_type_DIE): Robustify.
(lto_read_DIE): Use the cache.
* lto.h (hashtab.h): Include.
(lto_info_fd): Add DIE cache.
* Make-lang.in (LTO_H): New variable.
(lto/lto-lang.o): Use LTO_H.
(lto/lto-elf.o): Likewise.
(lto/lto-symtab.o): Likewise.
2006-07-09 Mark Mitchell <mark@codesourcery.com>
* lto.c (lto_abi_mismatch_error): New function.
(lto_abbrev_read): Initialize num_abbrevs.
(lto_read_form): Specify allowed form classes for
DW_AT_declaration. Adjust for change to lto_set_cu_context.
(lto_read_variable_formal_parameter_constant_DIE): Handle
DW_AT_declaration. Call lto_symtab_merge_var.
(lto_read_pointer_type_DIE): New function.
(lto_read_base_type_DIE): Use build_nonstandard_integer_type. Do
not creat TYPE_DECLs for types that already have them.
(lto_read_DIE): Add lto_read_pointer_type_DIE.
(lto_set_cu_context): Make cu_start point to the header, not the
first DIE.
(lto_file_read): Adjust for change to lto_set_cu_context.
* Make-lang.in (LTO_OBJS): Add lto-symtab.o.
(lto/lto-symtab.o): New rule.
* lto-tree.h (lang_identifier): Add decl field.
(LANG_IDENTIFIER_CAST): New macro.
(LTO_IDENTIFIER_DECL): Likewise.
(lto_symtab_merge_var): Declare.
* lto-symtab.c: New file.
2006-07-02 Daniel Berlin <dberlin@dberlin.org>
* lto.c (lto_context): Add current_cu and info_fd members.
(DWARF2_CompUnit): New structure.
(lto_read_DIE): Take lto_info_fd *.
(lto_read_child_DIEs): Ditto.
(lto_file_corrupt_error): Constify argument.
(lto_set_cu_context): New function
(lto_info_fd_init): Ditto.
(lto_info_fd_close): Ditto.
(lto_file_init): Use lto_info_fd_init.
(lto_file_close): Use lto_info_fd_close.
(lto_read_initial_length): Pass in pointer to header size.
(lto_read_comp_unit_header): Correct cu_length to
real length from beginning of header. Take lto_info_fd * as
argument.
(find_cu_for_offset): New function.
(lto_read_form): Change first argument to lto_info_fd *.
Add FORM_CONTEXT argument.
Handle DW_FORM_ref_addr.
(lto_read_tag_DIE): Change first argument to lto_info_fd *.
(LTO_BEGIN_READ_ATTRS_UNCHECKED): Save old context.
Swap contexts if necessary for form.
(LTO_BEGIN_READ_ATTRS): Cast fd to right type for
lto_file_corrupt_error.
(LTO_END_READ_ATTRS): Swap contexts back if it had changed.
(lto_read_referenced_type_DIE): Change first argument to
lto_info_fd *. Access lto_fd fields through base pointer.
(lto_read_compile_unit_DIE): Change first argument to an
lto_info_fd *.
(lto_read_variable_formal_parameter_constant_DIE): Ditto.
(lto_read_base_type_DIE): Ditto.
(lto_read_child_DIEs): Ditto.
(lto_read_DIE): Ditto. Change type of function pointer.
(lto_info_read): New function.
(lto_set_cu_context): Ditto.
(lto_file_read): Use lto_info_read, walk resulting CU's
(lto_main): Update for lto_info_fd change.
* lto-elf.c (lto_elf_file_open): Cast lto_info_fd to lto_fd where
necessary.
* lto.h (DWARF2_CompUnit): New structure.
(lto_info_fd): Ditto.
(lto_file): Change debug_info to be an lto_info_fd.
2006-06-25 Mark Mitchell <mark@codesourcery.com>
* lto.c (toplev.h): Include it.
(dwarf2.h): Likewise.
(tree.h): Likewise.
(tm.h): Likewise.
(cgraph.h): Likewise.
(ggc.h): Likewise.
(inttypes.h): Likewise.
(DWARF2_attr): New type.
(DWARF2_abbrev): Likewise.
(DWARF2_class): Likewise.
(DWARF2_form_data): Likewise.
(lto_context): Likewise.
(lto_fd_init): New function.
(lto_abbrev_fd_init): Likewise.
(lto_abbrev_fd_close): Likewise.
(lto_file_init): Use them.
(lto_file_close): New function.
(lto_file_corrupt_error): Likewise.
(LTO_CHECK_INT_VAL): New macro.
(lto_check_size_t_val): New function.
(lto_check_int_val): Likewise.
(LTO_READ_TYPE): New macro.
(lto_read_ubyte): New function.
(lto_read_uhalf): Likewise.
(lto_read_uword): Likewise.
(lto_read_uleb128): Likewise.
(lto_read_initial_length): Likewise.
(lto_abbrev_read_attrs): Likewise.
(lto_abbrev_read): Likewise.
(lto_abbrev_lookup): Likewise.
(lto_read_section_offset): Likewise.
(lto_read_comp_unit_header): Likewise.
(lto_read_form): Likewise.
(LTO_BEGIN_READ_ATTRS_UNCHECKED): New macro.
(LTO_BEGIN_READ_ATTRS): Likewise.
(LTO_END_READ_ATTRS): Likewise.
(lto_unsupported_attr_error): New function.
(lto_get_identifier): Likewise.
(lto_read_referenced_type_DIE): Likewise.
(lto_read_compile_unit_DIE): Likewise.
(lto_read_variable_formal_parameter_constant_DIE): Likewise.
(lto_read_base_type_DIE): Likewise.
(lto_read_DIE): Likewise.
(lto_read_child_DIEs): Likewise.
(lto_file_read): Read DIEs.
(lto_main): Ask middle end to emit entities.
* lto-tree.h (lang_identifier): Inherit from tree_identifier.
* lto-elf.c (lto_elf_file_open): Adjust for interface changes.
(lto_elf_file_close): Likewise.
* lto.h (lto_file): Declare.
(DWARF2_abbrev): Likewise.
(lto_fd): New type.
(lto_abbrev_fd): Likewise.
(lto_file): Use new types.
(lto_file_close): Declare.
* lto-lang.c (lto_init): Always use unit-at-a-time mode.
2006-06-18 Mark Mitchell <mark@codesourcery.com>
* lto.h: New file.
* lto.c: New file.
* lto-elf.c: New file.
* lto-lang.c (flags.h): Include it.
(lto.h): Likewise.
(lto_init): New function.
(lto_write_globals): Remove.
(LANG_HOOKS_WRITE_GLOBALS): Define to lhd_do_nothing.
(LANG_HOOKS_INIT): Define.
(LANG_HOOKS_PARSE_FILE): Likewise.
* Make-lang.in (LTO_OBJS): Add lto.o and lto-elf.o.
(LTO_EXE): Link with libelf.
(lto/lto-lang.o): Update dependencies.
(lto/lto.o): New target.
(lto/lto-elf.o): Likewise.
2006-06-12 Mark Mitchell <mark@codesourcery.com>
* config-lang.in: New file.
* Make-lang.in: Likewise.
* lto-tree.h: Likewise.
* lto-lang.c: Likewise.
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/Make-lang.in /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/Make-lang.in
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/Make-lang.in 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/Make-lang.in 2009-10-03 07:26:30.000000000 -0400
@@ -0,0 +1,89 @@
+# Top level -*- makefile -*- fragment for LTO
+# Copyright (C) 2009
+# Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+#GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# Variables
+
+# The name of the LTO compiler.
+LTO_EXE = lto1$(exeext)
+# The LTO-specific object files inclued in $(LTO_EXE).
+LTO_OBJS = lto/lto-lang.o lto/lto.o lto/lto-elf.o attribs.o
+LTO_H = lto/lto.h $(HASHTAB_H)
+LINKER_PLUGIN_API_H = $(srcdir)/../include/plugin-api.h
+LTO_TREE_H = lto/lto-tree.h $(LINKER_PLUGIN_API_H)
+
+
+# Rules
+
+# These hooks are used by the main GCC Makefile. Consult that
+# Makefile for documentation.
+lto.all.cross: $(LTO_EXE)
+lto.start.encap: $(LTO_EXE)
+lto.rest.encap:
+lto.tags:
+lto.install-common:
+lto.install-man:
+lto.install-info:
+lto.dvi:
+lto.pdf:
+lto.install-pdf:
+lto.html:
+lto.uninstall:
+lto.info:
+lto.man:
+lto.srcextra:
+lto.srcman:
+lto.srcinfo:
+lto.install-plugin:
+
+lto.mostlyclean:
+ rm -f $(LTO_OBJS) $(LTO_EXE)
+
+lto.clean:
+lto.distclean:
+lto.maintainer-clean:
+lto.stage1:
+lto.stage2:
+lto.stage3:
+lto.stage4:
+lto.stageprofile:
+lto.stagefeedback:
+
+# LTO rules.
+
+# Use strict warnings for this front end.
+lto-warn = $(STRICT_WARN)
+
+$(LTO_EXE): $(LTO_OBJS) $(BACKEND) $(LIBDEPS)
+ $(CC) $(ALL_CFLAGS) $(LDFLAGS) -o $@ \
+ $(LTO_OBJS) $(BACKEND) $(BACKENDLIBS) $(LIBS) -lelf
+
+# Dependencies
+lto/lto-lang.o: lto/lto-lang.c $(CONFIG_H) coretypes.h debug.h \
+ flags.h $(GGC_H) langhooks.h $(LANGHOOKS_DEF_H) $(SYSTEM_H) \
+ $(TARGET_H) $(LTO_H) $(GIMPLE_H) gtype-lto.h gt-lto-lto-lang.h \
+ $(EXPR_H)
+lto/lto.o: lto/lto.c $(CONFIG_H) $(SYSTEM_H) coretypes.h opts.h \
+ toplev.h $(TREE_H) $(DIAGNOSTIC_H) $(TM_H) $(LIBIBERTY_H) \
+ $(CGRAPH_H) $(GGC_H) tree-ssa-operands.h $(TREE_PASS_H) \
+ langhooks.h vec.h $(BITMAP_H) pointer-set.h $(IPA_PROP_H) \
+ $(COMMON_H) $(TIMEVAR_H) $(GIMPLE_H) $(LTO_H) $(LTO_TREE_H) \
+ $(LTO_TAGS_H) $(LTO_STREAMER_H)
+lto/lto-elf.o: lto/lto-elf.c $(CONFIG_H) coretypes.h $(SYSTEM_H) \
+ toplev.h $(LTO_H) $(TM_H) $(LIBIBERTY_H) $(GGC_H) $(LTO_STREAMER_H)
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/common.h /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/common.h
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/common.h 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/common.h 2009-10-03 07:26:30.000000000 -0400
@@ -0,0 +1,34 @@
+/* Common code for the plugin and lto1.
+ Copyright (C) 2008 Free Software Foundation, Inc.
+ Contributed by Rafael Avila de Espindola (espindola@google.com).
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+
+
+static const char *lto_resolution_str[9] =
+{
+ "UNKNOWN",
+ "UNDEF",
+ "PREVAILING_DEF",
+ "PREVAILING_DEF_IRONLY",
+ "PREEMPTED_REG",
+ "PREEMPTED_IR",
+ "RESOLVED_IR",
+ "RESOLVED_EXEC",
+ "RESOLVED_DYN"
+};
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/config-lang.in /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/config-lang.in
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/config-lang.in 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/config-lang.in 2009-09-30 15:14:18.000000000 -0400
@@ -0,0 +1,32 @@
+# Top level configure fragment for LTO
+# Copyright (C) 2009
+# Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation; either version 3, or (at your option)
+#any later version.
+
+#GCC is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+#GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+language="lto"
+compilers="lto1\$(exeext)"
+stagestuff="lto1\$(exeext)"
+
+gtfiles="\$(srcdir)/lto/lto-tree.h \$(srcdir)/lto/lto-lang.c \$(srcdir)/lto/lto.c"
+
+# LTO is a special front end. From a user's perspective it is not
+# really a language, but a middle end feature. However, the GIMPLE
+# reading module is implemented as a front end, so enabling LTO means
+# enabling this "language". To enable LTO functionality, use
+# --enable-lto when configuring the compiler.
+build_by_default=no
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lang-specs.h /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lang-specs.h
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lang-specs.h 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lang-specs.h 2009-09-30 15:51:31.000000000 -0400
@@ -0,0 +1,24 @@
+/* LTO driver specs.
+ Copyright 2009 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+/* LTO contributions to the "compilers" array in gcc.c. */
+
+ {"@lto", "lto1 %(cc1_options) %i %{!fsyntax-only:%(invoke_as)}",
+ /*cpp_spec=*/NULL, /*combinable=*/1, /*needs_preprocessing=*/0},
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lang.opt /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lang.opt
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lang.opt 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lang.opt 2009-09-23 11:15:25.000000000 -0400
@@ -0,0 +1,43 @@
+; Options for the LTO front end.
+; Copyright (C) 2008 Free Software Foundation, Inc.
+;
+; This file is part of GCC.
+;
+; GCC is free software; you can redistribute it and/or modify it under
+; the terms of the GNU General Public License as published by the Free
+; Software Foundation; either version 3, or (at your option) any later
+; version.
+;
+; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+; WARRANTY; without even the implied warranty of MERCHANTABILITY or
+; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+; for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with GCC; see the file COPYING3. If not see
+; <http://www.gnu.org/licenses/>.
+
+; See the GCC internals manual for a description of this file's format.
+
+; Please try to keep this file in ASCII collating order.
+
+Language
+LTO
+
+fltrans
+LTO Report Var(flag_ltrans) Optimization
+Run the link-time optimizer in local transformation (LTRANS) mode.
+
+fltrans-output-list=
+LTO Joined Var(ltrans_output_list)
+Specify a file to which a list of files output by LTRANS is written.
+
+fwpa
+LTO Report Var(flag_wpa) Optimization
+Run the link-time optimizer in whole program analysis (WPA) mode.
+
+resolution
+LTO Separate
+The resolution file
+
+; This comment is to ensure we retain the blank line above.
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto-elf.c /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto-elf.c
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto-elf.c 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto-elf.c 2009-09-30 16:17:51.000000000 -0400
@@ -0,0 +1,674 @@
+/* LTO routines for ELF object files.
+ Copyright 2009 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "toplev.h"
+#include <gelf.h>
+#include "lto.h"
+#include "tm.h"
+#include "libiberty.h"
+#include "ggc.h"
+#include "lto-streamer.h"
+
+
+/* Initialize FILE, an LTO file object for FILENAME. */
+static void
+lto_file_init (lto_file *file, const char *filename)
+{
+ file->filename = filename;
+}
+
+/* An ELF file. */
+struct lto_elf_file
+{
+ /* The base information. */
+ lto_file base;
+
+ /* The system file descriptor for the file. */
+ int fd;
+
+ /* The libelf descriptor for the file. */
+ Elf *elf;
+
+ /* Section number of string table used for section names. */
+ size_t sec_strtab;
+
+ /* Writable file members. */
+
+ /* The currently active section. */
+ Elf_Scn *scn;
+
+ /* The output stream for section header names. */
+ struct lto_output_stream *shstrtab_stream;
+
+ /* Linked list of data which must be freed *after* the file has been
+ closed. This is an annoying limitation of libelf. */
+ struct lto_char_ptr_base *data;
+};
+typedef struct lto_elf_file lto_elf_file;
+
+/* Stores executable header attributes which must be shared by all ELF files.
+ This is used for validating input files and populating output files. */
+static struct {
+ bool initialized;
+ /* 32 or 64 bits? */
+ size_t bits;
+ unsigned char elf_ident[EI_NIDENT];
+ Elf64_Half elf_machine;
+} cached_file_attrs;
+
+
+/* Return the section header for SECTION. The return value is never
+ NULL. Call lto_elf_free_shdr to release the memory allocated. */
+
+static Elf64_Shdr *
+lto_elf_get_shdr (Elf_Scn *section)
+{
+ Elf64_Shdr *shdr;
+
+ switch (cached_file_attrs.bits)
+ {
+ case 32:
+ {
+ Elf32_Shdr *shdr32;
+
+ /* Read the 32-bit section header. */
+ shdr32 = elf32_getshdr (section);
+ if (!shdr32)
+ fatal_error ("could not read section header: %s", elf_errmsg (0));
+
+ /* Transform it into a 64-bit section header. */
+ shdr = XNEW (Elf64_Shdr);
+ shdr->sh_name = shdr32->sh_name;
+ shdr->sh_type = shdr32->sh_type;
+ shdr->sh_flags = shdr32->sh_flags;
+ shdr->sh_addr = shdr32->sh_addr;
+ shdr->sh_offset = shdr32->sh_offset;
+ shdr->sh_size = shdr32->sh_size;
+ shdr->sh_link = shdr32->sh_link;
+ shdr->sh_info = shdr32->sh_info;
+ shdr->sh_addralign = shdr32->sh_addralign;
+ shdr->sh_entsize = shdr32->sh_entsize;
+ break;
+ }
+ break;
+
+ case 64:
+ shdr = elf64_getshdr (section);
+ if (!shdr)
+ fatal_error ("could not read section header: %s", elf_errmsg (0));
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+
+ return shdr;
+}
+
+/* Free SHDR, previously allocated by lto_elf_get_shdr. */
+static void
+lto_elf_free_shdr (Elf64_Shdr *shdr)
+{
+ if (cached_file_attrs.bits != 64)
+ free (shdr);
+}
+
+
+/* Returns a hash code for P. */
+
+static hashval_t
+hash_name (const void *p)
+{
+ const struct lto_section_slot *ds = (const struct lto_section_slot *) p;
+ return (hashval_t) htab_hash_string (ds->name);
+}
+
+
+/* Returns nonzero if P1 and P2 are equal. */
+
+static int
+eq_name (const void *p1, const void *p2)
+{
+ const struct lto_section_slot *s1 =
+ (const struct lto_section_slot *) p1;
+ const struct lto_section_slot *s2 =
+ (const struct lto_section_slot *) p2;
+
+ return strcmp (s1->name, s2->name) == 0;
+}
+
+
+/* Build a hash table whose key is the section names and whose data is
+ the start and size of each section in the .o file. */
+
+htab_t
+lto_elf_build_section_table (lto_file *lto_file)
+{
+ lto_elf_file *elf_file = (lto_elf_file *)lto_file;
+ htab_t section_hash_table;
+ Elf_Scn *section;
+
+ section_hash_table = htab_create (37, hash_name, eq_name, free);
+
+ for (section = elf_getscn (elf_file->elf, 0);
+ section;
+ section = elf_nextscn (elf_file->elf, section))
+ {
+ Elf64_Shdr *shdr;
+ const char *name;
+ size_t offset;
+ char *new_name;
+ void **slot;
+ struct lto_section_slot s_slot;
+
+ /* Get the name of this section. */
+ shdr = lto_elf_get_shdr (section);
+ offset = shdr->sh_name;
+ name = elf_strptr (elf_file->elf,
+ elf_file->sec_strtab,
+ offset);
+
+ /* Only put lto stuff into the symtab. */
+ if (strncmp (name, LTO_SECTION_NAME_PREFIX,
+ strlen (LTO_SECTION_NAME_PREFIX)) != 0)
+ {
+ lto_elf_free_shdr (shdr);
+ continue;
+ }
+
+ new_name = XNEWVEC (char, strlen (name) + 1);
+ strcpy (new_name, name);
+ s_slot.name = new_name;
+ slot = htab_find_slot (section_hash_table, &s_slot, INSERT);
+ if (*slot == NULL)
+ {
+ struct lto_section_slot *new_slot = XNEW (struct lto_section_slot);
+
+ new_slot->name = new_name;
+ /* The offset into the file for this section. */
+ new_slot->start = shdr->sh_offset;
+ new_slot->len = shdr->sh_size;
+ *slot = new_slot;
+ }
+ else
+ {
+ error ("two or more sections for %s:", new_name);
+ return NULL;
+ }
+
+ lto_elf_free_shdr (shdr);
+ }
+
+ return section_hash_table;
+}
+
+
+/* Initialize the section header of section SCN. SH_NAME is the section name
+ as an index into the section header string table. SH_TYPE is the section
+ type, an SHT_* macro from libelf headers. */
+
+#define DEFINE_INIT_SHDR(BITS) \
+static void \
+init_shdr##BITS (Elf_Scn *scn, size_t sh_name, size_t sh_type) \
+{ \
+ Elf##BITS##_Shdr *shdr; \
+ \
+ shdr = elf##BITS##_getshdr (scn); \
+ if (!shdr) \
+ fatal_error ("elf"#BITS"_getshdr() failed: %s.", elf_errmsg (-1));\
+ \
+ shdr->sh_name = sh_name; \
+ shdr->sh_type = sh_type; \
+ shdr->sh_addralign = POINTER_SIZE / BITS_PER_UNIT; \
+ shdr->sh_flags = 0; \
+ shdr->sh_entsize = 0; \
+}
+
+DEFINE_INIT_SHDR (32)
+DEFINE_INIT_SHDR (64)
+
+static bool first_data_block;
+
+/* Begin a new ELF section named NAME with type TYPE in the current output
+ file. TYPE is an SHT_* macro from the libelf headers. */
+
+static void
+lto_elf_begin_section_with_type (const char *name, size_t type)
+{
+ lto_elf_file *file;
+ Elf_Scn *scn;
+ size_t sh_name;
+
+ /* Grab the current output file and do some basic assertion checking. */
+ file = (lto_elf_file *) lto_get_current_out_file (),
+ gcc_assert (file);
+ gcc_assert (file->elf);
+ gcc_assert (!file->scn);
+
+ /* Create a new section. */
+ scn = elf_newscn (file->elf);
+ if (!scn)
+ fatal_error ("could not create a new ELF section: %s.", elf_errmsg (-1));
+ file->scn = scn;
+
+ /* Add a string table entry and record the offset. */
+ gcc_assert (file->shstrtab_stream);
+ sh_name = file->shstrtab_stream->total_size;
+ lto_output_data_stream (file->shstrtab_stream, name, strlen (name) + 1);
+
+ /* Initialize the section header. */
+ switch (cached_file_attrs.bits)
+ {
+ case 32:
+ init_shdr32 (scn, sh_name, type);
+ break;
+
+ case 64:
+ init_shdr64 (scn, sh_name, type);
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+
+ first_data_block = true;
+}
+
+
+/* Begin a new ELF section named NAME in the current output file. */
+
+void
+lto_elf_begin_section (const char *name)
+{
+ lto_elf_begin_section_with_type (name, SHT_PROGBITS);
+}
+
+
+/* Append DATA of length LEN to the current output section. BASE is a pointer
+ to the output page containing DATA. It is freed once the output file has
+ been written. */
+
+void
+lto_elf_append_data (const void *data, size_t len, void *block)
+{
+ lto_elf_file *file;
+ Elf_Data *elf_data;
+ struct lto_char_ptr_base *base = (struct lto_char_ptr_base *) block;
+
+ /* Grab the current output file and do some basic assertion checking. */
+ file = (lto_elf_file *) lto_get_current_out_file ();
+ gcc_assert (file);
+ gcc_assert (file->scn);
+
+ elf_data = elf_newdata (file->scn);
+ if (!elf_data)
+ fatal_error ("could not append data to ELF section: %s", elf_errmsg (-1));
+
+ if (first_data_block)
+ {
+ elf_data->d_align = POINTER_SIZE / BITS_PER_UNIT;
+ first_data_block = false;
+ }
+ else
+ elf_data->d_align = 1;
+ elf_data->d_buf = CONST_CAST (void *, data);
+ elf_data->d_off = 0LL;
+ elf_data->d_size = len;
+ elf_data->d_type = ELF_T_BYTE;
+ elf_data->d_version = EV_CURRENT;
+
+ base->ptr = (char *)file->data;
+ file->data = base;
+}
+
+
+/* End the current output section. This just does some assertion checking
+ and sets the current output file's scn member to NULL. */
+
+void
+lto_elf_end_section (void)
+{
+ lto_elf_file *file;
+
+ /* Grab the current output file and validate some basic assertions. */
+ file = (lto_elf_file *) lto_get_current_out_file ();
+ gcc_assert (file);
+ gcc_assert (file->scn);
+
+ file->scn = NULL;
+}
+
+
+/* Validate's ELF_FILE's executable header and, if cached_file_attrs is
+ uninitialized, caches the architecture. */
+
+#define DEFINE_VALIDATE_EHDR(BITS) \
+static bool \
+validate_ehdr##BITS (lto_elf_file *elf_file) \
+{ \
+ Elf##BITS##_Ehdr *elf_header; \
+ \
+ elf_header = elf##BITS##_getehdr (elf_file->elf); \
+ if (!elf_header) \
+ { \
+ error ("could not read ELF header: %s", elf_errmsg (0)); \
+ return false; \
+ } \
+ \
+ if (elf_header->e_type != ET_REL) \
+ { \
+ error ("not a relocatable ELF object file"); \
+ return false; \
+ } \
+ \
+ if (!cached_file_attrs.initialized) \
+ cached_file_attrs.elf_machine = elf_header->e_machine; \
+ \
+ if (cached_file_attrs.elf_machine != elf_header->e_machine) \
+ { \
+ error ("inconsistent file architecture detected"); \
+ return false; \
+ } \
+ \
+ return true; \
+}
+
+DEFINE_VALIDATE_EHDR (32)
+DEFINE_VALIDATE_EHDR (64)
+
+
+/* Validate's ELF_FILE's executable header and, if cached_file_attrs is
+ uninitialized, caches the results. Also records the section header string
+ table's section index. Returns true on success or false on failure. */
+
+static bool
+validate_file (lto_elf_file *elf_file)
+{
+ const char *elf_ident;
+
+ /* Some aspects of the libelf API are dependent on whether the
+ object file is a 32-bit or 64-bit file. Determine which kind of
+ file this is now. */
+ elf_ident = elf_getident (elf_file->elf, NULL);
+ if (!elf_ident)
+ {
+ error ("could not read ELF identification information: %s",
+ elf_errmsg (0));
+ return false;
+
+ }
+
+ if (!cached_file_attrs.initialized)
+ {
+ switch (elf_ident[EI_CLASS])
+ {
+ case ELFCLASS32:
+ cached_file_attrs.bits = 32;
+ break;
+
+ case ELFCLASS64:
+ cached_file_attrs.bits = 64;
+ break;
+
+ default:
+ error ("unsupported ELF file class");
+ return false;
+ }
+
+ memcpy (cached_file_attrs.elf_ident, elf_ident,
+ sizeof cached_file_attrs.elf_ident);
+ }
+
+ if (memcmp (elf_ident, cached_file_attrs.elf_ident,
+ sizeof cached_file_attrs.elf_ident))
+ return false;
+
+ /* Check that the input file is a relocatable object file with the correct
+ architecture. */
+ switch (cached_file_attrs.bits)
+ {
+ case 32:
+ if (!validate_ehdr32 (elf_file))
+ return false;
+ break;
+
+ case 64:
+ if (!validate_ehdr64 (elf_file))
+ return false;
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+
+ /* Read the string table used for section header names. */
+ if (elf_getshdrstrndx (elf_file->elf, &elf_file->sec_strtab) == -1)
+ {
+ error ("could not locate ELF string table: %s", elf_errmsg (0));
+ return false;
+ }
+
+ cached_file_attrs.initialized = true;
+ return true;
+}
+
+
+/* Helper functions used by init_ehdr. Initialize ELF_FILE's executable
+ header using cached data from previously read files. */
+
+#define DEFINE_INIT_EHDR(BITS) \
+static void \
+init_ehdr##BITS (lto_elf_file *elf_file) \
+{ \
+ Elf##BITS##_Ehdr *ehdr; \
+ \
+ gcc_assert (cached_file_attrs.bits); \
+ \
+ ehdr = elf##BITS##_newehdr (elf_file->elf); \
+ if (!ehdr) \
+ fatal_error ("elf"#BITS"_newehdr() failed: %s.", elf_errmsg (-1));\
+ \
+ memcpy (ehdr->e_ident, cached_file_attrs.elf_ident, \
+ sizeof cached_file_attrs.elf_ident); \
+ ehdr->e_type = ET_REL; \
+ ehdr->e_version = EV_CURRENT; \
+ ehdr->e_machine = cached_file_attrs.elf_machine; \
+}
+
+DEFINE_INIT_EHDR (32)
+DEFINE_INIT_EHDR (64)
+
+
+/* Initialize ELF_FILE's executable header using cached data from previously
+ read files. */
+
+static void
+init_ehdr (lto_elf_file *elf_file)
+{
+ switch (cached_file_attrs.bits)
+ {
+ case 32:
+ init_ehdr32 (elf_file);
+ break;
+
+ case 64:
+ init_ehdr64 (elf_file);
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+}
+
+
+/* Open ELF file FILENAME. If WRITABLE is true, the file is opened for write
+ and, if necessary, created. Otherwise, the file is opened for reading.
+ Returns the opened file. */
+
+lto_file *
+lto_elf_file_open (const char *filename, bool writable)
+{
+ lto_elf_file *elf_file;
+ lto_file *result;
+
+ /* Set up. */
+ elf_file = XCNEW (lto_elf_file);
+ result = (lto_file *) elf_file;
+ lto_file_init (result, filename);
+ elf_file->fd = -1;
+
+ /* Open the file. */
+ elf_file->fd = open (filename, writable ? O_WRONLY|O_CREAT : O_RDONLY, 0666);
+ if (elf_file->fd == -1)
+ {
+ error ("could not open file %s", filename);
+ goto fail;
+ }
+
+ /* Initialize the ELF library. */
+ if (elf_version (EV_CURRENT) == EV_NONE)
+ {
+ error ("ELF library is older than that used when building GCC");
+ goto fail;
+ }
+
+ /* Open the ELF file descriptor. */
+ elf_file->elf = elf_begin (elf_file->fd, writable ? ELF_C_WRITE : ELF_C_READ,
+ NULL);
+ if (!elf_file->elf)
+ {
+ error ("could not open ELF file: %s", elf_errmsg (0));
+ goto fail;
+ }
+
+ if (writable)
+ {
+ init_ehdr (elf_file);
+ elf_file->shstrtab_stream = XCNEW (struct lto_output_stream);
+ /* Output an empty string to the section header table. This becomes the
+ name of the initial NULL section. */
+ lto_output_1_stream (elf_file->shstrtab_stream, '\0');
+ }
+ else
+ if (!validate_file (elf_file))
+ goto fail;
+
+ return result;
+
+ fail:
+ lto_elf_file_close (result);
+ return NULL;
+}
+
+
+/* Close ELF file FILE and clean up any associated data structures. If FILE
+ was opened for writing, the file's ELF data is written at this time, and
+ any cached data buffers are freed. */
+
+void
+lto_elf_file_close (lto_file *file)
+{
+ lto_elf_file *elf_file = (lto_elf_file *) file;
+ struct lto_char_ptr_base *cur, *tmp;
+
+ /* Write the ELF section header string table. */
+ if (elf_file->shstrtab_stream)
+ {
+ size_t strtab;
+ GElf_Ehdr *ehdr_p, ehdr_buf;
+ lto_file *old_file = lto_set_current_out_file (file);
+
+ lto_elf_begin_section_with_type (".shstrtab", SHT_STRTAB);
+ ehdr_p = gelf_getehdr (elf_file->elf, &ehdr_buf);
+ if (ehdr_p == NULL)
+ fatal_error ("gelf_getehdr() failed: %s.", elf_errmsg (-1));
+ strtab = elf_ndxscn (elf_file->scn);
+ if (strtab < SHN_LORESERVE)
+ ehdr_p->e_shstrndx = strtab;
+ else
+ {
+ GElf_Shdr *shdr_p, shdr_buf;
+ Elf_Scn *scn_p = elf_getscn (elf_file->elf, 0);
+ if (scn_p == NULL)
+ fatal_error ("elf_getscn() failed: %s.", elf_errmsg (-1));
+ shdr_p = gelf_getshdr (scn_p, &shdr_buf);
+ if (shdr_p == NULL)
+ fatal_error ("gelf_getshdr() failed: %s.", elf_errmsg (-1));
+ shdr_p->sh_link = strtab;
+ if (gelf_update_shdr (scn_p, shdr_p) == 0)
+ fatal_error ("gelf_update_shdr() failed: %s.", elf_errmsg (-1));
+ ehdr_p->e_shstrndx = SHN_XINDEX;
+ }
+ if (gelf_update_ehdr (elf_file->elf, ehdr_p) == 0)
+ fatal_error ("gelf_update_ehdr() failed: %s.", elf_errmsg (-1));
+ lto_write_stream (elf_file->shstrtab_stream);
+ lto_elf_end_section ();
+
+ lto_set_current_out_file (old_file);
+ free (elf_file->shstrtab_stream);
+
+ if (elf_update (elf_file->elf, ELF_C_WRITE) < 0)
+ fatal_error ("elf_update() failed: %s.", elf_errmsg (-1));
+ }
+
+ if (elf_file->elf)
+ elf_end (elf_file->elf);
+ if (elf_file->fd != -1)
+ close (elf_file->fd);
+
+ /* Free any ELF data buffers. */
+ cur = elf_file->data;
+ while (cur)
+ {
+ tmp = cur;
+ cur = (struct lto_char_ptr_base *) cur->ptr;
+ free (tmp);
+ }
+
+ free (file);
+}
+
+
+/* The current output file. */
+static lto_file *current_out_file;
+
+
+/* Sets the current output file to FILE. Returns the old output file or
+ NULL. */
+
+lto_file *
+lto_set_current_out_file (lto_file *file)
+{
+ lto_file *old_file = current_out_file;
+ current_out_file = file;
+ return old_file;
+}
+
+
+/* Returns the current output file. */
+
+lto_file *
+lto_get_current_out_file (void)
+{
+ return current_out_file;
+}
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto-lang.c /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto-lang.c
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto-lang.c 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto-lang.c 2009-10-03 07:26:30.000000000 -0400
@@ -0,0 +1,1188 @@
+/* Language-dependent hooks for LTO.
+ Copyright 2009 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "flags.h"
+#include "tm.h"
+#include "tree.h"
+#include "expr.h"
+#include "target.h"
+#include "langhooks.h"
+#include "langhooks-def.h"
+#include "debug.h"
+#include "lto-tree.h"
+#include "lto.h"
+#include "tree-inline.h"
+#include "gimple.h"
+#include "toplev.h"
+
+static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *);
+static tree handle_const_attribute (tree *, tree, tree, int, bool *);
+static tree handle_malloc_attribute (tree *, tree, tree, int, bool *);
+static tree handle_pure_attribute (tree *, tree, tree, int, bool *);
+static tree handle_novops_attribute (tree *, tree, tree, int, bool *);
+static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *);
+static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *);
+static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *);
+static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *);
+static tree handle_format_attribute (tree *, tree, tree, int, bool *);
+static tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
+
+/* Table of machine-independent attributes supported in GIMPLE. */
+const struct attribute_spec lto_attribute_table[] =
+{
+ /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
+ { "noreturn", 0, 0, true, false, false,
+ handle_noreturn_attribute },
+ /* The same comments as for noreturn attributes apply to const ones. */
+ { "const", 0, 0, true, false, false,
+ handle_const_attribute },
+ { "malloc", 0, 0, true, false, false,
+ handle_malloc_attribute },
+ { "pure", 0, 0, true, false, false,
+ handle_pure_attribute },
+ { "no vops", 0, 0, true, false, false,
+ handle_novops_attribute },
+ { "nonnull", 0, -1, false, true, true,
+ handle_nonnull_attribute },
+ { "nothrow", 0, 0, true, false, false,
+ handle_nothrow_attribute },
+ { "sentinel", 0, 1, false, true, true,
+ handle_sentinel_attribute },
+ { "type generic", 0, 0, false, true, true,
+ handle_type_generic_attribute },
+ { NULL, 0, 0, false, false, false, NULL }
+};
+
+/* Give the specifications for the format attributes, used by C and all
+ descendants. */
+
+const struct attribute_spec lto_format_attribute_table[] =
+{
+ /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
+ { "format", 3, 3, false, true, true,
+ handle_format_attribute },
+ { "format_arg", 1, 1, false, true, true,
+ handle_format_arg_attribute },
+ { NULL, 0, 0, false, false, false, NULL }
+};
+
+enum built_in_attribute
+{
+#define DEF_ATTR_NULL_TREE(ENUM) ENUM,
+#define DEF_ATTR_INT(ENUM, VALUE) ENUM,
+#define DEF_ATTR_IDENT(ENUM, STRING) ENUM,
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM,
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+ ATTR_LAST
+};
+
+static GTY(()) tree built_in_attributes[(int) ATTR_LAST];
+
+/* Builtin types. */
+
+enum lto_builtin_type
+{
+#define DEF_PRIMITIVE_TYPE(NAME, VALUE) NAME,
+#define DEF_FUNCTION_TYPE_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
+#define DEF_FUNCTION_TYPE_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
+#define DEF_FUNCTION_TYPE_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) NAME,
+#define DEF_FUNCTION_TYPE_6(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6) NAME,
+#define DEF_FUNCTION_TYPE_7(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7) NAME,
+#define DEF_FUNCTION_TYPE_VAR_0(NAME, RETURN) NAME,
+#define DEF_FUNCTION_TYPE_VAR_1(NAME, RETURN, ARG1) NAME,
+#define DEF_FUNCTION_TYPE_VAR_2(NAME, RETURN, ARG1, ARG2) NAME,
+#define DEF_FUNCTION_TYPE_VAR_3(NAME, RETURN, ARG1, ARG2, ARG3) NAME,
+#define DEF_FUNCTION_TYPE_VAR_4(NAME, RETURN, ARG1, ARG2, ARG3, ARG4) NAME,
+#define DEF_FUNCTION_TYPE_VAR_5(NAME, RETURN, ARG1, ARG2, ARG3, ARG4, ARG6) \
+ NAME,
+#define DEF_POINTER_TYPE(NAME, TYPE) NAME,
+#include "builtin-types.def"
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_0
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_5
+#undef DEF_FUNCTION_TYPE_6
+#undef DEF_FUNCTION_TYPE_7
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
+#undef DEF_FUNCTION_TYPE_VAR_4
+#undef DEF_FUNCTION_TYPE_VAR_5
+#undef DEF_POINTER_TYPE
+ BT_LAST
+};
+
+typedef enum lto_builtin_type builtin_type;
+
+static GTY(()) tree builtin_types[(int) BT_LAST + 1];
+
+static GTY(()) tree string_type_node;
+static GTY(()) tree const_string_type_node;
+static GTY(()) tree wint_type_node;
+static GTY(()) tree intmax_type_node;
+static GTY(()) tree uintmax_type_node;
+static GTY(()) tree signed_size_type_node;
+
+/* Flags needed to process builtins.def. */
+int flag_no_builtin;
+int flag_no_nonansi_builtin;
+int flag_isoc94;
+int flag_isoc99;
+
+/* Attribute handlers. */
+
+/* Handle a "noreturn" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_noreturn_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree type = TREE_TYPE (*node);
+
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ TREE_THIS_VOLATILE (*node) = 1;
+ else if (TREE_CODE (type) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+ TREE_TYPE (*node)
+ = build_pointer_type
+ (build_type_variant (TREE_TYPE (type),
+ TYPE_READONLY (TREE_TYPE (type)), 1));
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "const" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_const_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree type = TREE_TYPE (*node);
+
+ /* See FIXME comment on noreturn in c_common_attribute_table. */
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ TREE_READONLY (*node) = 1;
+ else if (TREE_CODE (type) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE)
+ TREE_TYPE (*node)
+ = build_pointer_type
+ (build_type_variant (TREE_TYPE (type), 1,
+ TREE_THIS_VOLATILE (TREE_TYPE (type))));
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "malloc" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_malloc_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL
+ && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (*node))))
+ DECL_IS_MALLOC (*node) = 1;
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "pure" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_pure_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ DECL_PURE_P (*node) = 1;
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "no vops" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_novops_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool *ARG_UNUSED (no_add_attrs))
+{
+ gcc_assert (TREE_CODE (*node) == FUNCTION_DECL);
+ DECL_IS_NOVOPS (*node) = 1;
+ return NULL_TREE;
+}
+
+
+/* Helper for nonnull attribute handling; fetch the operand number
+ from the attribute argument list. */
+
+static bool
+get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp)
+{
+ /* Verify the arg number is a constant. */
+ if (TREE_CODE (arg_num_expr) != INTEGER_CST
+ || TREE_INT_CST_HIGH (arg_num_expr) != 0)
+ return false;
+
+ *valp = TREE_INT_CST_LOW (arg_num_expr);
+ return true;
+}
+
+/* Handle the "nonnull" attribute. */
+
+static tree
+handle_nonnull_attribute (tree *node, tree ARG_UNUSED (name),
+ tree args, int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree type = *node;
+ unsigned HOST_WIDE_INT attr_arg_num;
+
+ /* If no arguments are specified, all pointer arguments should be
+ non-null. Verify a full prototype is given so that the arguments
+ will have the correct types when we actually check them later. */
+ if (!args)
+ {
+ gcc_assert (TYPE_ARG_TYPES (type));
+ return NULL_TREE;
+ }
+
+ /* Argument list specified. Verify that each argument number references
+ a pointer argument. */
+ for (attr_arg_num = 1; args; args = TREE_CHAIN (args))
+ {
+ tree argument;
+ unsigned HOST_WIDE_INT arg_num = 0, ck_num;
+
+ if (!get_nonnull_operand (TREE_VALUE (args), &arg_num))
+ gcc_unreachable ();
+
+ argument = TYPE_ARG_TYPES (type);
+ if (argument)
+ {
+ for (ck_num = 1; ; ck_num++)
+ {
+ if (!argument || ck_num == arg_num)
+ break;
+ argument = TREE_CHAIN (argument);
+ }
+
+ gcc_assert (argument
+ && TREE_CODE (TREE_VALUE (argument)) == POINTER_TYPE);
+ }
+ }
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "nothrow" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_nothrow_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ if (TREE_CODE (*node) == FUNCTION_DECL)
+ TREE_NOTHROW (*node) = 1;
+ else
+ gcc_unreachable ();
+
+ return NULL_TREE;
+}
+
+
+/* Handle a "sentinel" attribute. */
+
+static tree
+handle_sentinel_attribute (tree *node, tree ARG_UNUSED (name), tree args,
+ int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree params = TYPE_ARG_TYPES (*node);
+ gcc_assert (params);
+
+ while (TREE_CHAIN (params))
+ params = TREE_CHAIN (params);
+
+ gcc_assert (!VOID_TYPE_P (TREE_VALUE (params)));
+
+ if (args)
+ {
+ tree position = TREE_VALUE (args);
+ gcc_assert (TREE_CODE (position) == INTEGER_CST);
+ if (tree_int_cst_lt (position, integer_zero_node))
+ gcc_unreachable ();
+ }
+
+ return NULL_TREE;
+}
+
+/* Handle a "type_generic" attribute. */
+
+static tree
+handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool * ARG_UNUSED (no_add_attrs))
+{
+ tree params;
+
+ /* Ensure we have a function type. */
+ gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE);
+
+ params = TYPE_ARG_TYPES (*node);
+ while (params && ! VOID_TYPE_P (TREE_VALUE (params)))
+ params = TREE_CHAIN (params);
+
+ /* Ensure we have a variadic function. */
+ gcc_assert (!params);
+
+ return NULL_TREE;
+}
+
+/* Handle a "format" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+static tree
+handle_format_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool *no_add_attrs)
+{
+ *no_add_attrs = true;
+ return NULL_TREE;
+}
+
+
+/* Handle a "format_arg" attribute; arguments as in
+ struct attribute_spec.handler. */
+
+tree
+handle_format_arg_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name),
+ tree ARG_UNUSED (args), int ARG_UNUSED (flags),
+ bool *no_add_attrs)
+{
+ *no_add_attrs = true;
+ return NULL_TREE;
+}
+
+
+/* Cribbed from c-common.c. */
+
+static void
+def_fn_type (builtin_type def, builtin_type ret, bool var, int n, ...)
+{
+ tree args = NULL, t;
+ va_list list;
+ int i;
+
+ va_start (list, n);
+ for (i = 0; i < n; ++i)
+ {
+ builtin_type a = (builtin_type) va_arg (list, int);
+ t = builtin_types[a];
+ if (t == error_mark_node)
+ goto egress;
+ args = tree_cons (NULL_TREE, t, args);
+ }
+ va_end (list);
+
+ args = nreverse (args);
+ if (!var)
+ args = chainon (args, void_list_node);
+
+ t = builtin_types[ret];
+ if (t == error_mark_node)
+ goto egress;
+ t = build_function_type (t, args);
+
+ egress:
+ builtin_types[def] = t;
+}
+
+/* Used to help initialize the builtin-types.def table. When a type of
+ the correct size doesn't exist, use error_mark_node instead of NULL.
+ The later results in segfaults even when a decl using the type doesn't
+ get invoked. */
+
+static tree
+builtin_type_for_size (int size, bool unsignedp)
+{
+ tree type = lang_hooks.types.type_for_size (size, unsignedp);
+ return type ? type : error_mark_node;
+}
+
+/* Support for DEF_BUILTIN. */
+
+static void
+def_builtin_1 (enum built_in_function fncode, const char *name,
+ enum built_in_class fnclass, tree fntype, tree libtype,
+ bool both_p, bool fallback_p, bool nonansi_p,
+ tree fnattrs, bool implicit_p)
+{
+ tree decl;
+ const char *libname;
+
+ if (fntype == error_mark_node)
+ return;
+
+ libname = name + strlen ("__builtin_");
+ decl = add_builtin_function (name, fntype, fncode, fnclass,
+ (fallback_p ? libname : NULL),
+ fnattrs);
+
+ if (both_p
+ && !flag_no_builtin
+ && !(nonansi_p && flag_no_nonansi_builtin))
+ add_builtin_function (libname, libtype, fncode, fnclass,
+ NULL, fnattrs);
+
+ built_in_decls[(int) fncode] = decl;
+ if (implicit_p)
+ implicit_built_in_decls[(int) fncode] = decl;
+}
+
+
+/* Initialize the attribute table for all the supported builtins. */
+
+static void
+lto_init_attributes (void)
+{
+ /* Fill in the built_in_attributes array. */
+#define DEF_ATTR_NULL_TREE(ENUM) \
+ built_in_attributes[(int) ENUM] = NULL_TREE;
+#define DEF_ATTR_INT(ENUM, VALUE) \
+ built_in_attributes[(int) ENUM] = build_int_cst (NULL_TREE, VALUE);
+#define DEF_ATTR_IDENT(ENUM, STRING) \
+ built_in_attributes[(int) ENUM] = get_identifier (STRING);
+#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) \
+ built_in_attributes[(int) ENUM] \
+ = tree_cons (built_in_attributes[(int) PURPOSE], \
+ built_in_attributes[(int) VALUE], \
+ built_in_attributes[(int) CHAIN]);
+#include "builtin-attrs.def"
+#undef DEF_ATTR_NULL_TREE
+#undef DEF_ATTR_INT
+#undef DEF_ATTR_IDENT
+#undef DEF_ATTR_TREE_LIST
+}
+
+/* Create builtin types and functions. VA_LIST_REF_TYPE_NODE and
+ VA_LIST_ARG_TYPE_NODE are used in builtin-types.def. */
+
+static void
+lto_define_builtins (tree va_list_ref_type_node ATTRIBUTE_UNUSED,
+ tree va_list_arg_type_node ATTRIBUTE_UNUSED)
+{
+#define DEF_PRIMITIVE_TYPE(ENUM, VALUE) \
+ builtin_types[ENUM] = VALUE;
+#define DEF_FUNCTION_TYPE_0(ENUM, RETURN) \
+ def_fn_type (ENUM, RETURN, 0, 0);
+#define DEF_FUNCTION_TYPE_1(ENUM, RETURN, ARG1) \
+ def_fn_type (ENUM, RETURN, 0, 1, ARG1);
+#define DEF_FUNCTION_TYPE_2(ENUM, RETURN, ARG1, ARG2) \
+ def_fn_type (ENUM, RETURN, 0, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ def_fn_type (ENUM, RETURN, 0, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+ def_fn_type (ENUM, RETURN, 0, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
+ def_fn_type (ENUM, RETURN, 0, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_FUNCTION_TYPE_6(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+ ARG6) \
+ def_fn_type (ENUM, RETURN, 0, 6, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6);
+#define DEF_FUNCTION_TYPE_7(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5, \
+ ARG6, ARG7) \
+ def_fn_type (ENUM, RETURN, 0, 7, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6, ARG7);
+#define DEF_FUNCTION_TYPE_VAR_0(ENUM, RETURN) \
+ def_fn_type (ENUM, RETURN, 1, 0);
+#define DEF_FUNCTION_TYPE_VAR_1(ENUM, RETURN, ARG1) \
+ def_fn_type (ENUM, RETURN, 1, 1, ARG1);
+#define DEF_FUNCTION_TYPE_VAR_2(ENUM, RETURN, ARG1, ARG2) \
+ def_fn_type (ENUM, RETURN, 1, 2, ARG1, ARG2);
+#define DEF_FUNCTION_TYPE_VAR_3(ENUM, RETURN, ARG1, ARG2, ARG3) \
+ def_fn_type (ENUM, RETURN, 1, 3, ARG1, ARG2, ARG3);
+#define DEF_FUNCTION_TYPE_VAR_4(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4) \
+ def_fn_type (ENUM, RETURN, 1, 4, ARG1, ARG2, ARG3, ARG4);
+#define DEF_FUNCTION_TYPE_VAR_5(ENUM, RETURN, ARG1, ARG2, ARG3, ARG4, ARG5) \
+ def_fn_type (ENUM, RETURN, 1, 5, ARG1, ARG2, ARG3, ARG4, ARG5);
+#define DEF_POINTER_TYPE(ENUM, TYPE) \
+ builtin_types[(int) ENUM] = build_pointer_type (builtin_types[(int) TYPE]);
+
+#include "builtin-types.def"
+
+#undef DEF_PRIMITIVE_TYPE
+#undef DEF_FUNCTION_TYPE_1
+#undef DEF_FUNCTION_TYPE_2
+#undef DEF_FUNCTION_TYPE_3
+#undef DEF_FUNCTION_TYPE_4
+#undef DEF_FUNCTION_TYPE_5
+#undef DEF_FUNCTION_TYPE_6
+#undef DEF_FUNCTION_TYPE_VAR_0
+#undef DEF_FUNCTION_TYPE_VAR_1
+#undef DEF_FUNCTION_TYPE_VAR_2
+#undef DEF_FUNCTION_TYPE_VAR_3
+#undef DEF_FUNCTION_TYPE_VAR_4
+#undef DEF_FUNCTION_TYPE_VAR_5
+#undef DEF_POINTER_TYPE
+ builtin_types[(int) BT_LAST] = NULL_TREE;
+
+ lto_init_attributes ();
+
+#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, BOTH_P, FALLBACK_P,\
+ NONANSI_P, ATTRS, IMPLICIT, COND) \
+ if (NAME && COND) \
+ def_builtin_1 (ENUM, NAME, CLASS, builtin_types[(int) TYPE], \
+ builtin_types[(int) LIBTYPE], BOTH_P, FALLBACK_P, \
+ NONANSI_P, built_in_attributes[(int) ATTRS], IMPLICIT);
+#include "builtins.def"
+#undef DEF_BUILTIN
+}
+
+static GTY(()) tree registered_builtin_types;
+
+/* A chain of builtin functions that we need to recognize. We will
+ assume that all other function names we see will be defined by the
+ user's program. */
+static GTY(()) tree registered_builtin_fndecls;
+
+/* Language hooks. */
+
+static unsigned int
+lto_init_options (unsigned int argc ATTRIBUTE_UNUSED,
+ const char **argv ATTRIBUTE_UNUSED)
+{
+ /* Always operate in unit-at-time mode so that we can defer
+ decisions about what to output. */
+ flag_unit_at_a_time = 1;
+
+ return CL_LTO;
+}
+
+/* Handle command-line option SCODE. If the option takes an argument, it is
+ stored in ARG, which is otherwise NULL. VALUE holds either a numerical
+ argument or a binary value indicating whether the positive or negative form
+ of the option was supplied. */
+
+const char *resolution_file_name;
+static int
+lto_handle_option (size_t scode, const char *arg, int value ATTRIBUTE_UNUSED)
+{
+ enum opt_code code = (enum opt_code) scode;
+ int result = 1;
+
+ switch (code)
+ {
+ case OPT_resolution:
+ resolution_file_name = arg;
+ result = 1;
+ break;
+
+ case OPT_Wabi:
+ warn_psabi = value;
+ break;
+
+ default:
+ break;
+ }
+
+ return result;
+}
+
+/* Perform post-option processing. Does additional initialization based on
+ command-line options. PFILENAME is the main input filename. Returns false
+ to enable subsequent back-end initialization. */
+
+static bool
+lto_post_options (const char **pfilename ATTRIBUTE_UNUSED)
+{
+ /* FIXME lto: We have stripped enough type and other
+ debugging information out of the IR that it may
+ appear ill-formed to dwarf2out, etc. We must not
+ attempt to generate debug info in lto1. A more
+ graceful solution would disable the option flags
+ rather than ignoring them, but we'd also have to
+ worry about default debugging options. */
+ write_symbols = NO_DEBUG;
+ debug_info_level = DINFO_LEVEL_NONE;
+
+ /* -fltrans and -fwpa are mutually exclusive. Check for that here. */
+ if (flag_wpa && flag_ltrans)
+ error ("-fwpa and -fltrans are mutually exclusive.");
+
+ if (flag_ltrans)
+ {
+ flag_generate_lto = 0;
+
+ /* During LTRANS, we are not looking at the whole program, only
+ a subset of the whole callgraph. */
+ flag_whole_program = 0;
+ }
+
+ if (flag_wpa)
+ flag_generate_lto = 1;
+
+ /* Excess precision other than "fast" requires front-end
+ support. */
+ flag_excess_precision_cmdline = EXCESS_PRECISION_FAST;
+
+ lto_read_all_file_options ();
+
+ /* Initialize the compiler back end. */
+ return false;
+}
+
+/* Return an integer type with PRECISION bits of precision,
+ that is unsigned if UNSIGNEDP is nonzero, otherwise signed. */
+
+static tree
+lto_type_for_size (unsigned precision, int unsignedp)
+{
+ if (precision == TYPE_PRECISION (integer_type_node))
+ return unsignedp ? unsigned_type_node : integer_type_node;
+
+ if (precision == TYPE_PRECISION (signed_char_type_node))
+ return unsignedp ? unsigned_char_type_node : signed_char_type_node;
+
+ if (precision == TYPE_PRECISION (short_integer_type_node))
+ return unsignedp ? short_unsigned_type_node : short_integer_type_node;
+
+ if (precision == TYPE_PRECISION (long_integer_type_node))
+ return unsignedp ? long_unsigned_type_node : long_integer_type_node;
+
+ if (precision == TYPE_PRECISION (long_long_integer_type_node))
+ return unsignedp
+ ? long_long_unsigned_type_node
+ : long_long_integer_type_node;
+
+ if (precision <= TYPE_PRECISION (intQI_type_node))
+ return unsignedp ? unsigned_intQI_type_node : intQI_type_node;
+
+ if (precision <= TYPE_PRECISION (intHI_type_node))
+ return unsignedp ? unsigned_intHI_type_node : intHI_type_node;
+
+ if (precision <= TYPE_PRECISION (intSI_type_node))
+ return unsignedp ? unsigned_intSI_type_node : intSI_type_node;
+
+ if (precision <= TYPE_PRECISION (intDI_type_node))
+ return unsignedp ? unsigned_intDI_type_node : intDI_type_node;
+
+ if (precision <= TYPE_PRECISION (intTI_type_node))
+ return unsignedp ? unsigned_intTI_type_node : intTI_type_node;
+
+ return NULL_TREE;
+}
+
+
+/* Return a data type that has machine mode MODE.
+ If the mode is an integer,
+ then UNSIGNEDP selects between signed and unsigned types.
+ If the mode is a fixed-point mode,
+ then UNSIGNEDP selects between saturating and nonsaturating types. */
+
+static tree
+lto_type_for_mode (enum machine_mode mode, int unsigned_p)
+{
+ tree t;
+
+ if (mode == TYPE_MODE (integer_type_node))
+ return unsigned_p ? unsigned_type_node : integer_type_node;
+
+ if (mode == TYPE_MODE (signed_char_type_node))
+ return unsigned_p ? unsigned_char_type_node : signed_char_type_node;
+
+ if (mode == TYPE_MODE (short_integer_type_node))
+ return unsigned_p ? short_unsigned_type_node : short_integer_type_node;
+
+ if (mode == TYPE_MODE (long_integer_type_node))
+ return unsigned_p ? long_unsigned_type_node : long_integer_type_node;
+
+ if (mode == TYPE_MODE (long_long_integer_type_node))
+ return unsigned_p ? long_long_unsigned_type_node : long_long_integer_type_node;
+
+ if (mode == QImode)
+ return unsigned_p ? unsigned_intQI_type_node : intQI_type_node;
+
+ if (mode == HImode)
+ return unsigned_p ? unsigned_intHI_type_node : intHI_type_node;
+
+ if (mode == SImode)
+ return unsigned_p ? unsigned_intSI_type_node : intSI_type_node;
+
+ if (mode == DImode)
+ return unsigned_p ? unsigned_intDI_type_node : intDI_type_node;
+
+#if HOST_BITS_PER_WIDE_INT >= 64
+ if (mode == TYPE_MODE (intTI_type_node))
+ return unsigned_p ? unsigned_intTI_type_node : intTI_type_node;
+#endif
+
+ if (mode == TYPE_MODE (float_type_node))
+ return float_type_node;
+
+ if (mode == TYPE_MODE (double_type_node))
+ return double_type_node;
+
+ if (mode == TYPE_MODE (long_double_type_node))
+ return long_double_type_node;
+
+ if (mode == TYPE_MODE (void_type_node))
+ return void_type_node;
+
+ if (mode == TYPE_MODE (build_pointer_type (char_type_node)))
+ return (unsigned_p
+ ? make_unsigned_type (GET_MODE_PRECISION (mode))
+ : make_signed_type (GET_MODE_PRECISION (mode)));
+
+ if (mode == TYPE_MODE (build_pointer_type (integer_type_node)))
+ return (unsigned_p
+ ? make_unsigned_type (GET_MODE_PRECISION (mode))
+ : make_signed_type (GET_MODE_PRECISION (mode)));
+
+ if (COMPLEX_MODE_P (mode))
+ {
+ enum machine_mode inner_mode;
+ tree inner_type;
+
+ if (mode == TYPE_MODE (complex_float_type_node))
+ return complex_float_type_node;
+ if (mode == TYPE_MODE (complex_double_type_node))
+ return complex_double_type_node;
+ if (mode == TYPE_MODE (complex_long_double_type_node))
+ return complex_long_double_type_node;
+
+ if (mode == TYPE_MODE (complex_integer_type_node) && !unsigned_p)
+ return complex_integer_type_node;
+
+ inner_mode = GET_MODE_INNER (mode);
+ inner_type = lto_type_for_mode (inner_mode, unsigned_p);
+ if (inner_type != NULL_TREE)
+ return build_complex_type (inner_type);
+ }
+ else if (VECTOR_MODE_P (mode))
+ {
+ enum machine_mode inner_mode = GET_MODE_INNER (mode);
+ tree inner_type = lto_type_for_mode (inner_mode, unsigned_p);
+ if (inner_type != NULL_TREE)
+ return build_vector_type_for_mode (inner_type, mode);
+ }
+
+ if (mode == TYPE_MODE (dfloat32_type_node))
+ return dfloat32_type_node;
+ if (mode == TYPE_MODE (dfloat64_type_node))
+ return dfloat64_type_node;
+ if (mode == TYPE_MODE (dfloat128_type_node))
+ return dfloat128_type_node;
+
+ if (ALL_SCALAR_FIXED_POINT_MODE_P (mode))
+ {
+ if (mode == TYPE_MODE (short_fract_type_node))
+ return unsigned_p ? sat_short_fract_type_node : short_fract_type_node;
+ if (mode == TYPE_MODE (fract_type_node))
+ return unsigned_p ? sat_fract_type_node : fract_type_node;
+ if (mode == TYPE_MODE (long_fract_type_node))
+ return unsigned_p ? sat_long_fract_type_node : long_fract_type_node;
+ if (mode == TYPE_MODE (long_long_fract_type_node))
+ return unsigned_p ? sat_long_long_fract_type_node
+ : long_long_fract_type_node;
+
+ if (mode == TYPE_MODE (unsigned_short_fract_type_node))
+ return unsigned_p ? sat_unsigned_short_fract_type_node
+ : unsigned_short_fract_type_node;
+ if (mode == TYPE_MODE (unsigned_fract_type_node))
+ return unsigned_p ? sat_unsigned_fract_type_node
+ : unsigned_fract_type_node;
+ if (mode == TYPE_MODE (unsigned_long_fract_type_node))
+ return unsigned_p ? sat_unsigned_long_fract_type_node
+ : unsigned_long_fract_type_node;
+ if (mode == TYPE_MODE (unsigned_long_long_fract_type_node))
+ return unsigned_p ? sat_unsigned_long_long_fract_type_node
+ : unsigned_long_long_fract_type_node;
+
+ if (mode == TYPE_MODE (short_accum_type_node))
+ return unsigned_p ? sat_short_accum_type_node : short_accum_type_node;
+ if (mode == TYPE_MODE (accum_type_node))
+ return unsigned_p ? sat_accum_type_node : accum_type_node;
+ if (mode == TYPE_MODE (long_accum_type_node))
+ return unsigned_p ? sat_long_accum_type_node : long_accum_type_node;
+ if (mode == TYPE_MODE (long_long_accum_type_node))
+ return unsigned_p ? sat_long_long_accum_type_node
+ : long_long_accum_type_node;
+
+ if (mode == TYPE_MODE (unsigned_short_accum_type_node))
+ return unsigned_p ? sat_unsigned_short_accum_type_node
+ : unsigned_short_accum_type_node;
+ if (mode == TYPE_MODE (unsigned_accum_type_node))
+ return unsigned_p ? sat_unsigned_accum_type_node
+ : unsigned_accum_type_node;
+ if (mode == TYPE_MODE (unsigned_long_accum_type_node))
+ return unsigned_p ? sat_unsigned_long_accum_type_node
+ : unsigned_long_accum_type_node;
+ if (mode == TYPE_MODE (unsigned_long_long_accum_type_node))
+ return unsigned_p ? sat_unsigned_long_long_accum_type_node
+ : unsigned_long_long_accum_type_node;
+
+ if (mode == QQmode)
+ return unsigned_p ? sat_qq_type_node : qq_type_node;
+ if (mode == HQmode)
+ return unsigned_p ? sat_hq_type_node : hq_type_node;
+ if (mode == SQmode)
+ return unsigned_p ? sat_sq_type_node : sq_type_node;
+ if (mode == DQmode)
+ return unsigned_p ? sat_dq_type_node : dq_type_node;
+ if (mode == TQmode)
+ return unsigned_p ? sat_tq_type_node : tq_type_node;
+
+ if (mode == UQQmode)
+ return unsigned_p ? sat_uqq_type_node : uqq_type_node;
+ if (mode == UHQmode)
+ return unsigned_p ? sat_uhq_type_node : uhq_type_node;
+ if (mode == USQmode)
+ return unsigned_p ? sat_usq_type_node : usq_type_node;
+ if (mode == UDQmode)
+ return unsigned_p ? sat_udq_type_node : udq_type_node;
+ if (mode == UTQmode)
+ return unsigned_p ? sat_utq_type_node : utq_type_node;
+
+ if (mode == HAmode)
+ return unsigned_p ? sat_ha_type_node : ha_type_node;
+ if (mode == SAmode)
+ return unsigned_p ? sat_sa_type_node : sa_type_node;
+ if (mode == DAmode)
+ return unsigned_p ? sat_da_type_node : da_type_node;
+ if (mode == TAmode)
+ return unsigned_p ? sat_ta_type_node : ta_type_node;
+
+ if (mode == UHAmode)
+ return unsigned_p ? sat_uha_type_node : uha_type_node;
+ if (mode == USAmode)
+ return unsigned_p ? sat_usa_type_node : usa_type_node;
+ if (mode == UDAmode)
+ return unsigned_p ? sat_uda_type_node : uda_type_node;
+ if (mode == UTAmode)
+ return unsigned_p ? sat_uta_type_node : uta_type_node;
+ }
+
+ for (t = registered_builtin_types; t; t = TREE_CHAIN (t))
+ if (TYPE_MODE (TREE_VALUE (t)) == mode)
+ return TREE_VALUE (t);
+
+ return NULL_TREE;
+}
+
+static int
+lto_global_bindings_p (void)
+{
+ return cfun == NULL;
+}
+
+static void
+lto_set_decl_assembler_name (tree decl)
+{
+ /* This is almost the same as lhd_set_decl_assembler_name, except that
+ we need to uniquify file-scope names, even if they are not
+ TREE_PUBLIC, to avoid conflicts between individual files. */
+ tree id;
+
+ if (TREE_PUBLIC (decl))
+ id = targetm.mangle_decl_assembler_name (decl, DECL_NAME (decl));
+ else
+ {
+ const char *name = IDENTIFIER_POINTER (DECL_NAME (decl));
+ char *label;
+
+ ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
+ id = get_identifier (label);
+ }
+
+ SET_DECL_ASSEMBLER_NAME (decl, id);
+}
+
+static tree
+lto_pushdecl (tree t ATTRIBUTE_UNUSED)
+{
+ /* Do nothing, since we get all information from DWARF and LTO
+ sections. */
+ return NULL_TREE;
+}
+
+static tree
+lto_getdecls (void)
+{
+ return registered_builtin_fndecls;
+}
+
+static void
+lto_write_globals (void)
+{
+ tree *vec = VEC_address (tree, lto_global_var_decls);
+ int len = VEC_length (tree, lto_global_var_decls);
+ wrapup_global_declarations (vec, len);
+ emit_debug_global_declarations (vec, len);
+ VEC_free (tree, gc, lto_global_var_decls);
+}
+
+static tree
+lto_builtin_function (tree decl)
+{
+ /* Record it. */
+ TREE_CHAIN (decl) = registered_builtin_fndecls;
+ registered_builtin_fndecls = decl;
+
+ return decl;
+}
+
+static void
+lto_register_builtin_type (tree type, const char *name)
+{
+ tree decl;
+
+ decl = build_decl (UNKNOWN_LOCATION, TYPE_DECL, get_identifier (name), type);
+ DECL_ARTIFICIAL (decl) = 1;
+ if (!TYPE_NAME (type))
+ TYPE_NAME (type) = decl;
+
+ registered_builtin_types = tree_cons (0, type, registered_builtin_types);
+}
+
+/* Build nodes that would have be created by the C front-end; necessary
+ for including builtin-types.def and ultimately builtins.def. */
+
+static void
+lto_build_c_type_nodes (void)
+{
+ gcc_assert (void_type_node);
+
+ void_list_node = build_tree_list (NULL_TREE, void_type_node);
+ string_type_node = build_pointer_type (char_type_node);
+ const_string_type_node
+ = build_pointer_type (build_qualified_type (char_type_node, TYPE_QUAL_CONST));
+
+ if (strcmp (SIZE_TYPE, "unsigned int") == 0)
+ {
+ intmax_type_node = integer_type_node;
+ uintmax_type_node = unsigned_type_node;
+ signed_size_type_node = integer_type_node;
+ }
+ else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
+ {
+ intmax_type_node = long_integer_type_node;
+ uintmax_type_node = long_unsigned_type_node;
+ signed_size_type_node = long_integer_type_node;
+ }
+ else
+ gcc_unreachable ();
+
+ wint_type_node = unsigned_type_node;
+ pid_type_node = integer_type_node;
+}
+
+
+/* Perform LTO-specific initialization. */
+
+static bool
+lto_init (void)
+{
+ /* We need to generate LTO if running in WPA mode. */
+ flag_generate_lto = flag_wpa;
+
+ /* Initialize libcpp line maps for gcc_assert to work. */
+ linemap_add (line_table, LC_RENAME, 0, NULL, 0);
+ linemap_add (line_table, LC_RENAME, 0, NULL, 0);
+
+ /* Create the basic integer types. */
+ build_common_tree_nodes (flag_signed_char, /*signed_sizetype=*/false);
+
+ /* Share char_type_node with whatever would be the default for the target.
+ char_type_node will be used for internal types such as
+ va_list_type_node but will not be present in the lto stream. */
+ char_type_node
+ = DEFAULT_SIGNED_CHAR ? signed_char_type_node : unsigned_char_type_node;
+
+ /* Tell the middle end what type to use for the size of objects. */
+ if (strcmp (SIZE_TYPE, "unsigned int") == 0)
+ {
+ set_sizetype (unsigned_type_node);
+ size_type_node = unsigned_type_node;
+ }
+ else if (strcmp (SIZE_TYPE, "long unsigned int") == 0)
+ {
+ set_sizetype (long_unsigned_type_node);
+ size_type_node = long_unsigned_type_node;
+ }
+ else
+ gcc_unreachable ();
+
+ /* The global tree for the main identifier is filled in by
+ language-specific front-end initialization that is not run in the
+ LTO back-end. It appears that all languages that perform such
+ initialization currently do so in the same way, so we do it here. */
+ if (main_identifier_node == NULL_TREE)
+ main_identifier_node = get_identifier ("main");
+
+ /* In the C++ front-end, fileptr_type_node is defined as a variant
+ copy of of ptr_type_node, rather than ptr_node itself. The
+ distinction should only be relevant to the front-end, so we
+ always use the C definition here in lto1. */
+ gcc_assert (fileptr_type_node == ptr_type_node);
+
+ ptrdiff_type_node = integer_type_node;
+
+ /* Create other basic types. */
+ build_common_tree_nodes_2 (/*short_double=*/false);
+ lto_build_c_type_nodes ();
+ gcc_assert (va_list_type_node);
+
+ if (TREE_CODE (va_list_type_node) == ARRAY_TYPE)
+ {
+ tree x = build_pointer_type (TREE_TYPE (va_list_type_node));
+ lto_define_builtins (x, x);
+ }
+ else
+ {
+ lto_define_builtins (va_list_type_node,
+ build_reference_type (va_list_type_node));
+ }
+
+ targetm.init_builtins ();
+ build_common_builtin_nodes ();
+
+ /* Initialize LTO-specific data structures. */
+ lto_global_var_decls = VEC_alloc (tree, gc, 256);
+ in_lto_p = true;
+
+ return true;
+}
+
+/* Initialize tree structures required by the LTO front end. */
+
+static void lto_init_ts (void)
+{
+ tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
+}
+
+#undef LANG_HOOKS_NAME
+#define LANG_HOOKS_NAME "GNU GIMPLE"
+#undef LANG_HOOKS_INIT_OPTIONS
+#define LANG_HOOKS_INIT_OPTIONS lto_init_options
+#undef LANG_HOOKS_HANDLE_OPTION
+#define LANG_HOOKS_HANDLE_OPTION lto_handle_option
+#undef LANG_HOOKS_POST_OPTIONS
+#define LANG_HOOKS_POST_OPTIONS lto_post_options
+#undef LANG_HOOKS_GET_ALIAS_SET
+#define LANG_HOOKS_GET_ALIAS_SET gimple_get_alias_set
+#undef LANG_HOOKS_TYPE_FOR_MODE
+#define LANG_HOOKS_TYPE_FOR_MODE lto_type_for_mode
+#undef LANG_HOOKS_TYPE_FOR_SIZE
+#define LANG_HOOKS_TYPE_FOR_SIZE lto_type_for_size
+#undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
+#define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lto_set_decl_assembler_name
+#undef LANG_HOOKS_GLOBAL_BINDINGS_P
+#define LANG_HOOKS_GLOBAL_BINDINGS_P lto_global_bindings_p
+#undef LANG_HOOKS_PUSHDECL
+#define LANG_HOOKS_PUSHDECL lto_pushdecl
+#undef LANG_HOOKS_GETDECLS
+#define LANG_HOOKS_GETDECLS lto_getdecls
+#undef LANG_HOOKS_WRITE_GLOBALS
+#define LANG_HOOKS_WRITE_GLOBALS lto_write_globals
+#undef LANG_HOOKS_REGISTER_BUILTIN_TYPE
+#define LANG_HOOKS_REGISTER_BUILTIN_TYPE lto_register_builtin_type
+#undef LANG_HOOKS_BUILTIN_FUNCTION
+#define LANG_HOOKS_BUILTIN_FUNCTION lto_builtin_function
+#undef LANG_HOOKS_INIT
+#define LANG_HOOKS_INIT lto_init
+#undef LANG_HOOKS_PARSE_FILE
+#define LANG_HOOKS_PARSE_FILE lto_main
+#undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
+#define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION tree_rest_of_compilation
+#undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
+#define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
+#undef LANG_HOOKS_TYPES_COMPATIBLE_P
+#define LANG_HOOKS_TYPES_COMPATIBLE_P NULL
+
+/* Attribute hooks. */
+#undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
+#define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE lto_attribute_table
+#undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
+#define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE lto_format_attribute_table
+
+#undef LANG_HOOKS_BEGIN_SECTION
+#define LANG_HOOKS_BEGIN_SECTION lto_elf_begin_section
+#undef LANG_HOOKS_APPEND_DATA
+#define LANG_HOOKS_APPEND_DATA lto_elf_append_data
+#undef LANG_HOOKS_END_SECTION
+#define LANG_HOOKS_END_SECTION lto_elf_end_section
+
+#undef LANG_HOOKS_INIT_TS
+#define LANG_HOOKS_INIT_TS lto_init_ts
+
+struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
+
+/* Language hooks that are not part of lang_hooks. */
+
+tree
+convert (tree type ATTRIBUTE_UNUSED, tree expr ATTRIBUTE_UNUSED)
+{
+ gcc_unreachable ();
+}
+
+/* Tree walking support. */
+
+static enum lto_tree_node_structure_enum
+lto_tree_node_structure (union lang_tree_node *t ATTRIBUTE_UNUSED)
+{
+ return TS_LTO_GENERIC;
+}
+
+#include "ggc.h"
+#include "gtype-lto.h"
+#include "gt-lto-lto-lang.h"
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto-tree.h /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto-tree.h
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto-tree.h 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto-tree.h 2009-09-30 15:15:52.000000000 -0400
@@ -0,0 +1,61 @@
+/* Language-dependent trees for LTO.
+ Copyright 2009 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_LTO_TREE_H
+#define GCC_LTO_TREE_H
+
+#include "plugin-api.h"
+
+struct GTY(()) lang_identifier
+{
+ struct tree_identifier base;
+};
+
+struct GTY(()) lang_decl
+{
+ int dummy; /* Added because ggc does not like empty structs. */
+};
+
+struct GTY(()) lang_type
+{
+ int dummy; /* Added because ggc does not like empty structs. */
+};
+
+struct GTY(()) language_function
+{
+ int dummy; /* Added because ggc does not like empty structs. */
+};
+
+enum lto_tree_node_structure_enum {
+ TS_LTO_GENERIC
+};
+
+union GTY((desc ("lto_tree_node_structure (&%h)"),
+ chain_next ("(union lang_tree_node *)TREE_CHAIN (&%h.generic)")))
+ lang_tree_node
+{
+ union tree_node GTY ((tag ("TS_LTO_GENERIC"),
+ desc ("tree_node_structure (&%h)"))) generic;
+};
+
+/* Vector to keep track of external variables we've seen so far. */
+extern GTY(()) VEC(tree,gc) *lto_global_var_decls;
+
+#endif /* GCC_LTO_TREE_H */
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto.c /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto.c
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto.c 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto.c 2009-10-01 18:27:45.000000000 -0400
@@ -0,0 +1,2067 @@
+/* Top-level LTO routines.
+ Copyright 2009 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "opts.h"
+#include "toplev.h"
+#include "tree.h"
+#include "diagnostic.h"
+#include "tm.h"
+#include "libiberty.h"
+#include "cgraph.h"
+#include "ggc.h"
+#include "tree-ssa-operands.h"
+#include "tree-pass.h"
+#include "langhooks.h"
+#include "vec.h"
+#include "bitmap.h"
+#include "pointer-set.h"
+#include "ipa-prop.h"
+#include "common.h"
+#include "timevar.h"
+#include "gimple.h"
+#include "lto.h"
+#include "lto-tree.h"
+#include "lto-streamer.h"
+
+/* This needs to be included after config.h. Otherwise, _GNU_SOURCE will not
+ be defined in time to set __USE_GNU in the system headers, and strsignal
+ will not be declared. */
+#include <sys/mman.h>
+
+DEF_VEC_P(bitmap);
+DEF_VEC_ALLOC_P(bitmap,heap);
+
+/* Read the constructors and inits. */
+
+static void
+lto_materialize_constructors_and_inits (struct lto_file_decl_data * file_data)
+{
+ size_t len;
+ const char *data = lto_get_section_data (file_data,
+ LTO_section_static_initializer,
+ NULL, &len);
+ lto_input_constructors_and_inits (file_data, data);
+ lto_free_section_data (file_data, LTO_section_static_initializer, NULL,
+ data, len);
+}
+
+/* Read the function body for the function associated with NODE if possible. */
+
+static void
+lto_materialize_function (struct cgraph_node *node)
+{
+ tree decl;
+ struct lto_file_decl_data *file_data;
+ const char *data, *name;
+ size_t len;
+ tree step;
+
+ /* Ignore clone nodes. Read the body only from the original one.
+ We may find clone nodes during LTRANS after WPA has made inlining
+ decisions. */
+ if (node->clone_of)
+ return;
+
+ decl = node->decl;
+ file_data = node->local.lto_file_data;
+ name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
+
+ /* We may have renamed the declaration, e.g., a static function. */
+ name = lto_get_decl_name_mapping (file_data, name);
+
+ data = lto_get_section_data (file_data, LTO_section_function_body,
+ name, &len);
+ if (data)
+ {
+ struct function *fn;
+
+ gcc_assert (!DECL_IS_BUILTIN (decl));
+
+ /* This function has a definition. */
+ TREE_STATIC (decl) = 1;
+
+ gcc_assert (DECL_STRUCT_FUNCTION (decl) == NULL);
+ allocate_struct_function (decl, false);
+
+ /* Load the function body only if not operating in WPA mode. In
+ WPA mode, the body of the function is not needed. */
+ if (!flag_wpa)
+ {
+ lto_input_function_body (file_data, decl, data);
+ lto_stats.num_function_bodies++;
+ }
+
+ fn = DECL_STRUCT_FUNCTION (decl);
+ lto_free_section_data (file_data, LTO_section_function_body, name,
+ data, len);
+
+ /* Look for initializers of constant variables and private
+ statics. */
+ for (step = fn->local_decls; step; step = TREE_CHAIN (step))
+ {
+ tree decl = TREE_VALUE (step);
+ if (TREE_CODE (decl) == VAR_DECL
+ && (TREE_STATIC (decl) && !DECL_EXTERNAL (decl))
+ && flag_unit_at_a_time)
+ varpool_finalize_decl (decl);
+ }
+ }
+ else
+ DECL_EXTERNAL (decl) = 1;
+
+ /* Let the middle end know about the function. */
+ rest_of_decl_compilation (decl, 1, 0);
+ if (cgraph_node (decl)->needed)
+ cgraph_mark_reachable_node (cgraph_node (decl));
+}
+
+
+/* Decode the content of memory pointed to by DATA in the the
+ in decl state object STATE. DATA_IN points to a data_in structure for
+ decoding. Return the address after the decoded object in the input. */
+
+static const uint32_t *
+lto_read_in_decl_state (struct data_in *data_in, const uint32_t *data,
+ struct lto_in_decl_state *state)
+{
+ uint32_t ix;
+ tree decl;
+ uint32_t i, j;
+
+ ix = *data++;
+ decl = lto_streamer_cache_get (data_in->reader_cache, (int) ix);
+ if (TREE_CODE (decl) != FUNCTION_DECL)
+ {
+ gcc_assert (decl == void_type_node);
+ decl = NULL_TREE;
+ }
+ state->fn_decl = decl;
+
+ for (i = 0; i < LTO_N_DECL_STREAMS; i++)
+ {
+ uint32_t size = *data++;
+ tree *decls = (tree *) xcalloc (size, sizeof (tree));
+
+ for (j = 0; j < size; j++)
+ {
+ decls[j] = lto_streamer_cache_get (data_in->reader_cache, data[j]);
+
+ /* Register every type in the global type table. If the
+ type existed already, use the existing type. */
+ if (TYPE_P (decls[j]))
+ decls[j] = gimple_register_type (decls[j]);
+ }
+
+ state->streams[i].size = size;
+ state->streams[i].trees = decls;
+ data += size;
+ }
+
+ return data;
+}
+
+
+/* Read all the symbols from buffer DATA, using descriptors in DECL_DATA.
+ RESOLUTIONS is the set of symbols picked by the linker (read from the
+ resolution file when the linker plugin is being used). */
+
+static void
+lto_read_decls (struct lto_file_decl_data *decl_data, const void *data,
+ VEC(ld_plugin_symbol_resolution_t,heap) *resolutions)
+{
+ const struct lto_decl_header *header = (const struct lto_decl_header *) data;
+ const int32_t decl_offset = sizeof (struct lto_decl_header);
+ const int32_t main_offset = decl_offset + header->decl_state_size;
+ const int32_t string_offset = main_offset + header->main_size;
+ struct lto_input_block ib_main;
+ struct data_in *data_in;
+ unsigned int i;
+ const uint32_t *data_ptr, *data_end;
+ uint32_t num_decl_states;
+
+ LTO_INIT_INPUT_BLOCK (ib_main, (const char *) data + main_offset, 0,
+ header->main_size);
+
+ data_in = lto_data_in_create (decl_data, (const char *) data + string_offset,
+ header->string_size, resolutions);
+
+ /* Read the global declarations and types. */
+ while (ib_main.p < ib_main.len)
+ {
+ tree t = lto_input_tree (&ib_main, data_in);
+ gcc_assert (t && ib_main.p <= ib_main.len);
+ }
+
+ /* Read in lto_in_decl_state objects. */
+ data_ptr = (const uint32_t *) ((const char*) data + decl_offset);
+ data_end =
+ (const uint32_t *) ((const char*) data_ptr + header->decl_state_size);
+ num_decl_states = *data_ptr++;
+
+ gcc_assert (num_decl_states > 0);
+ decl_data->global_decl_state = lto_new_in_decl_state ();
+ data_ptr = lto_read_in_decl_state (data_in, data_ptr,
+ decl_data->global_decl_state);
+
+ /* Read in per-function decl states and enter them in hash table. */
+ decl_data->function_decl_states =
+ htab_create (37, lto_hash_in_decl_state, lto_eq_in_decl_state, free);
+
+ for (i = 1; i < num_decl_states; i++)
+ {
+ struct lto_in_decl_state *state = lto_new_in_decl_state ();
+ void **slot;
+
+ data_ptr = lto_read_in_decl_state (data_in, data_ptr, state);
+ slot = htab_find_slot (decl_data->function_decl_states, state, INSERT);
+ gcc_assert (*slot == NULL);
+ *slot = state;
+ }
+
+ if (data_ptr != data_end)
+ internal_error ("bytecode stream: garbage at the end of symbols section");
+
+ /* Set the current decl state to be the global state. */
+ decl_data->current_decl_state = decl_data->global_decl_state;
+
+ /* After each CU is read register and possibly merge global
+ symbols and their types. */
+ lto_register_deferred_decls_in_symtab (data_in);
+
+ lto_data_in_delete (data_in);
+}
+
+/* Read resolution for file named FILE_NAME. The resolution is read from
+ RESOLUTION. An array with the symbol resolution is returned. The array
+ size is written to SIZE. */
+
+static VEC(ld_plugin_symbol_resolution_t,heap) *
+lto_resolution_read (FILE *resolution, const char *file_name)
+{
+ /* We require that objects in the resolution file are in the same
+ order as the lto1 command line. */
+ unsigned int name_len;
+ char *obj_name;
+ unsigned int num_symbols;
+ unsigned int i;
+ VEC(ld_plugin_symbol_resolution_t,heap) *ret = NULL;
+ unsigned max_index = 0;
+
+ if (!resolution)
+ return NULL;
+
+ name_len = strlen (file_name);
+ obj_name = XNEWVEC (char, name_len + 1);
+ fscanf (resolution, " "); /* Read white space. */
+
+ fread (obj_name, sizeof (char), name_len, resolution);
+ obj_name[name_len] = '\0';
+ if (strcmp (obj_name, file_name) != 0)
+ internal_error ("unexpected file name %s in linker resolution file. "
+ "Expected %s", obj_name, file_name);
+
+ free (obj_name);
+
+ fscanf (resolution, "%u", &num_symbols);
+
+ for (i = 0; i < num_symbols; i++)
+ {
+ unsigned index;
+ char r_str[27];
+ enum ld_plugin_symbol_resolution r;
+ unsigned int j;
+ unsigned int lto_resolution_str_len =
+ sizeof (lto_resolution_str) / sizeof (char *);
+
+ fscanf (resolution, "%u %26s", &index, r_str);
+ if (index > max_index)
+ max_index = index;
+
+ for (j = 0; j < lto_resolution_str_len; j++)
+ {
+ if (strcmp (lto_resolution_str[j], r_str) == 0)
+ {
+ r = (enum ld_plugin_symbol_resolution) j;
+ break;
+ }
+ }
+ if (j >= lto_resolution_str_len)
+ internal_error ("tried to read past the end of the linker resolution "
+ "file");
+
+ VEC_safe_grow_cleared (ld_plugin_symbol_resolution_t, heap, ret,
+ index + 1);
+ VEC_replace (ld_plugin_symbol_resolution_t, ret, index, r);
+ }
+
+ return ret;
+}
+
+/* Generate a TREE representation for all types and external decls
+ entities in FILE.
+
+ Read all of the globals out of the file. Then read the cgraph
+ and process the .o index into the cgraph nodes so that it can open
+ the .o file to load the functions and ipa information. */
+
+static struct lto_file_decl_data *
+lto_file_read (lto_file *file, FILE *resolution_file)
+{
+ struct lto_file_decl_data *file_data;
+ const char *data;
+ size_t len;
+ VEC(ld_plugin_symbol_resolution_t,heap) *resolutions;
+
+ resolutions = lto_resolution_read (resolution_file, file->filename);
+
+ file_data = XCNEW (struct lto_file_decl_data);
+ file_data->file_name = file->filename;
+ file_data->fd = -1;
+ file_data->section_hash_table = lto_elf_build_section_table (file);
+ file_data->renaming_hash_table = lto_create_renaming_table ();
+
+ data = lto_get_section_data (file_data, LTO_section_decls, NULL, &len);
+ lto_read_decls (file_data, data, resolutions);
+ lto_free_section_data (file_data, LTO_section_decls, NULL, data, len);
+
+ return file_data;
+}
+
+#if HAVE_MMAP_FILE && HAVE_SYSCONF && defined _SC_PAGE_SIZE
+#define LTO_MMAP_IO 1
+#endif
+
+#if LTO_MMAP_IO
+/* Page size of machine is used for mmap and munmap calls. */
+static size_t page_mask;
+#endif
+
+/* Get the section data of length LEN from FILENAME starting at
+ OFFSET. The data segment must be freed by the caller when the
+ caller is finished. Returns NULL if all was not well. */
+
+static char *
+lto_read_section_data (struct lto_file_decl_data *file_data,
+ intptr_t offset, size_t len)
+{
+ char *result;
+#if LTO_MMAP_IO
+ intptr_t computed_len;
+ intptr_t computed_offset;
+ intptr_t diff;
+#endif
+
+ if (file_data->fd == -1)
+ file_data->fd = open (file_data->file_name, O_RDONLY);
+
+ if (file_data->fd == -1)
+ return NULL;
+
+#if LTO_MMAP_IO
+ if (!page_mask)
+ {
+ size_t page_size = sysconf (_SC_PAGE_SIZE);
+ page_mask = ~(page_size - 1);
+ }
+
+ computed_offset = offset & page_mask;
+ diff = offset - computed_offset;
+ computed_len = len + diff;
+
+ result = (char *) mmap (NULL, computed_len, PROT_READ, MAP_PRIVATE,
+ file_data->fd, computed_offset);
+ if (result == MAP_FAILED)
+ {
+ close (file_data->fd);
+ return NULL;
+ }
+
+ return result + diff;
+#else
+ result = (char *) xmalloc (len);
+ if (result == NULL)
+ {
+ close (file_data->fd);
+ return NULL;
+ }
+ if (lseek (file_data->fd, offset, SEEK_SET) != offset
+ || read (file_data->fd, result, len) != (ssize_t) len)
+ {
+ free (result);
+ close (file_data->fd);
+ return NULL;
+ }
+
+ return result;
+#endif
+}
+
+
+/* Get the section data from FILE_DATA of SECTION_TYPE with NAME.
+ NAME will be NULL unless the section type is for a function
+ body. */
+
+static const char *
+get_section_data (struct lto_file_decl_data *file_data,
+ enum lto_section_type section_type,
+ const char *name,
+ size_t *len)
+{
+ htab_t section_hash_table = file_data->section_hash_table;
+ struct lto_section_slot *f_slot;
+ struct lto_section_slot s_slot;
+ const char *section_name = lto_get_section_name (section_type, name);
+ char *data = NULL;
+
+ *len = 0;
+ s_slot.name = section_name;
+ f_slot = (struct lto_section_slot *) htab_find (section_hash_table, &s_slot);
+ if (f_slot)
+ {
+ data = lto_read_section_data (file_data, f_slot->start, f_slot->len);
+ *len = f_slot->len;
+ }
+
+ free (CONST_CAST (char *, section_name));
+ return data;
+}
+
+
+/* Free the section data from FILE_DATA of SECTION_TYPE with NAME that
+ starts at OFFSET and has LEN bytes. */
+
+static void
+free_section_data (struct lto_file_decl_data *file_data,
+ enum lto_section_type section_type ATTRIBUTE_UNUSED,
+ const char *name ATTRIBUTE_UNUSED,
+ const char *offset, size_t len ATTRIBUTE_UNUSED)
+{
+#if LTO_MMAP_IO
+ intptr_t computed_len;
+ intptr_t computed_offset;
+ intptr_t diff;
+#endif
+
+ if (file_data->fd == -1)
+ return;
+
+#if LTO_MMAP_IO
+ computed_offset = ((intptr_t) offset) & page_mask;
+ diff = (intptr_t) offset - computed_offset;
+ computed_len = len + diff;
+
+ munmap ((caddr_t) computed_offset, computed_len);
+#else
+ free (CONST_CAST(char *, offset));
+#endif
+}
+
+/* Vector of all cgraph node sets. */
+static GTY (()) VEC(cgraph_node_set, gc) *lto_cgraph_node_sets;
+
+
+/* Group cgrah nodes by input files. This is used mainly for testing
+ right now. */
+
+static void
+lto_1_to_1_map (void)
+{
+ struct cgraph_node *node;
+ struct lto_file_decl_data *file_data;
+ struct pointer_map_t *pmap;
+ cgraph_node_set set;
+ void **slot;
+
+ timevar_push (TV_WHOPR_WPA);
+
+ lto_cgraph_node_sets = VEC_alloc (cgraph_node_set, gc, 1);
+
+ /* If the cgraph is empty, create one cgraph node set so that there is still
+ an output file for any variables that need to be exported in a DSO. */
+ if (!cgraph_nodes)
+ {
+ set = cgraph_node_set_new ();
+ VEC_safe_push (cgraph_node_set, gc, lto_cgraph_node_sets, set);
+ goto finish;
+ }
+
+ pmap = pointer_map_create ();
+
+ for (node = cgraph_nodes; node; node = node->next)
+ {
+ /* We only need to partition the nodes that we read from the
+ gimple bytecode files. */
+ file_data = node->local.lto_file_data;
+ if (file_data == NULL)
+ continue;
+
+ slot = pointer_map_contains (pmap, file_data);
+ if (slot)
+ set = (cgraph_node_set) *slot;
+ else
+ {
+ set = cgraph_node_set_new ();
+ slot = pointer_map_insert (pmap, file_data);
+ *slot = set;
+ VEC_safe_push (cgraph_node_set, gc, lto_cgraph_node_sets, set);
+ }
+
+ cgraph_node_set_add (set, node);
+ }
+
+ pointer_map_destroy (pmap);
+
+finish:
+ timevar_pop (TV_WHOPR_WPA);
+
+ lto_stats.num_cgraph_partitions += VEC_length (cgraph_node_set,
+ lto_cgraph_node_sets);
+}
+
+
+/* Add inlined clone NODE and its master clone to SET, if NODE itself has
+ inlined callees, recursively add the callees. */
+
+static void
+lto_add_inline_clones (cgraph_node_set set, struct cgraph_node *node,
+ bitmap original_decls, bitmap inlined_decls)
+{
+ struct cgraph_node *callee;
+ struct cgraph_edge *edge;
+
+ cgraph_node_set_add (set, node);
+
+ if (!bitmap_bit_p (original_decls, DECL_UID (node->decl)))
+ bitmap_set_bit (inlined_decls, DECL_UID (node->decl));
+
+ /* Check to see if NODE has any inlined callee. */
+ for (edge = node->callees; edge != NULL; edge = edge->next_callee)
+ {
+ callee = edge->callee;
+ if (callee->global.inlined_to != NULL)
+ lto_add_inline_clones (set, callee, original_decls, inlined_decls);
+ }
+}
+
+/* Compute the transitive closure of inlining of SET based on the
+ information in the callgraph. Returns a bitmap of decls that have
+ been inlined into SET indexed by UID. */
+
+static bitmap
+lto_add_all_inlinees (cgraph_node_set set)
+{
+ cgraph_node_set_iterator csi;
+ struct cgraph_node *node;
+ bitmap original_nodes = lto_bitmap_alloc ();
+ bitmap original_decls = lto_bitmap_alloc ();
+ bitmap inlined_decls = lto_bitmap_alloc ();
+ bool changed;
+
+ /* We are going to iterate SET while adding to it, mark all original
+ nodes so that we only add node inlined to original nodes. */
+ for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ {
+ bitmap_set_bit (original_nodes, csi_node (csi)->uid);
+ bitmap_set_bit (original_decls, DECL_UID (csi_node (csi)->decl));
+ }
+
+ /* Some of the original nodes might not be needed anymore.
+ Remove them. */
+ do
+ {
+ changed = false;
+ for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ {
+ struct cgraph_node *inlined_to;
+ node = csi_node (csi);
+
+ /* NODE was not inlined. We still need it. */
+ if (!node->global.inlined_to)
+ continue;
+
+ inlined_to = node->global.inlined_to;
+
+ /* NODE should have only one caller. */
+ gcc_assert (!node->callers->next_caller);
+
+ if (!bitmap_bit_p (original_nodes, inlined_to->uid))
+ {
+ bitmap_clear_bit (original_nodes, node->uid);
+ cgraph_node_set_remove (set, node);
+ changed = true;
+ }
+ }
+ }
+ while (changed);
+
+ /* Transitively add to SET all the inline clones for every node that
+ has been inlined. */
+ for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ {
+ node = csi_node (csi);
+ if (bitmap_bit_p (original_nodes, node->uid))
+ lto_add_inline_clones (set, node, original_decls, inlined_decls);
+ }
+
+ lto_bitmap_free (original_nodes);
+ lto_bitmap_free (original_decls);
+
+ return inlined_decls;
+}
+
+/* Owing to inlining, we may need to promote a file-scope variable
+ to a global variable. Consider this case:
+
+ a.c:
+ static int var;
+
+ void
+ foo (void)
+ {
+ var++;
+ }
+
+ b.c:
+
+ extern void foo (void);
+
+ void
+ bar (void)
+ {
+ foo ();
+ }
+
+ If WPA inlines FOO inside BAR, then the static variable VAR needs to
+ be promoted to global because BAR and VAR may be in different LTRANS
+ files. */
+
+/* This struct keeps track of states used in globalization. */
+
+typedef struct
+{
+ /* Current cgraph node set. */
+ cgraph_node_set set;
+
+ /* Function DECLs of cgraph nodes seen. */
+ bitmap seen_node_decls;
+
+ /* Use in walk_tree to avoid multiple visits of a node. */
+ struct pointer_set_t *visited;
+
+ /* static vars in this set. */
+ bitmap static_vars_in_set;
+
+ /* static vars in all previous set. */
+ bitmap all_static_vars;
+
+ /* all vars in all previous set. */
+ bitmap all_vars;
+} globalize_context_t;
+
+/* Callback for walk_tree. Examine the tree pointer to by TP and see if
+ if its a file-scope static variable of function that need to be turned
+ into a global. */
+
+static tree
+globalize_cross_file_statics (tree *tp, int *walk_subtrees ATTRIBUTE_UNUSED,
+ void *data)
+{
+ globalize_context_t *context = (globalize_context_t *) data;
+ tree t = *tp;
+
+ if (t == NULL_TREE)
+ return NULL;
+
+ /* The logic for globalization of VAR_DECLs and FUNCTION_DECLs are
+ different. For functions, we can simply look at the cgraph node sets
+ to tell if there are references to static functions outside the set.
+ The cgraph node sets do not keep track of vars, we need to traverse
+ the trees to determine what vars need to be globalized. */
+ if (TREE_CODE (t) == VAR_DECL)
+ {
+ if (!TREE_PUBLIC (t))
+ {
+ /* This file-scope static variable is reachable from more
+ that one set. Make it global but with hidden visibility
+ so that we do not export it in dynamic linking. */
+ if (bitmap_bit_p (context->all_static_vars, DECL_UID (t)))
+ {
+ TREE_PUBLIC (t) = 1;
+ DECL_VISIBILITY (t) = VISIBILITY_HIDDEN;
+ }
+ bitmap_set_bit (context->static_vars_in_set, DECL_UID (t));
+ }
+ bitmap_set_bit (context->all_vars, DECL_UID (t));
+ walk_tree (&DECL_INITIAL (t), globalize_cross_file_statics, context,
+ context->visited);
+ }
+ else if (TREE_CODE (t) == FUNCTION_DECL && !TREE_PUBLIC (t))
+ {
+ if (!cgraph_node_in_set_p (cgraph_node (t), context->set))
+ {
+ /* This file-scope static function is reachable from a set
+ which does not contain the function DECL. Make it global
+ but with hidden visibility. */
+ TREE_PUBLIC (t) = 1;
+ DECL_VISIBILITY (t) = VISIBILITY_HIDDEN;
+ }
+ }
+
+ return NULL;
+}
+
+/* Helper of lto_scan_statics_in_cgraph_node below. Scan TABLE for
+ static decls that may be used in more than one LTRANS file.
+ CONTEXT is a globalize_context_t for storing scanning states. */
+
+static void
+lto_scan_statics_in_ref_table (struct lto_tree_ref_table *table,
+ globalize_context_t *context)
+{
+ unsigned i;
+
+ for (i = 0; i < table->size; i++)
+ walk_tree (&table->trees[i], globalize_cross_file_statics, context,
+ context->visited);
+}
+
+/* Promote file-scope decl reachable from NODE if necessary to global.
+ CONTEXT is a globalize_context_t storing scanning states. */
+
+static void
+lto_scan_statics_in_cgraph_node (struct cgraph_node *node,
+ globalize_context_t *context)
+{
+ struct lto_in_decl_state *state;
+
+ /* Do nothing if NODE has no function body. */
+ if (!node->analyzed)
+ return;
+
+ /* Return if the DECL of nodes has been visited before. */
+ if (bitmap_bit_p (context->seen_node_decls, DECL_UID (node->decl)))
+ return;
+
+ bitmap_set_bit (context->seen_node_decls, DECL_UID (node->decl));
+
+ state = lto_get_function_in_decl_state (node->local.lto_file_data,
+ node->decl);
+ gcc_assert (state);
+
+ lto_scan_statics_in_ref_table (&state->streams[LTO_DECL_STREAM_VAR_DECL],
+ context);
+ lto_scan_statics_in_ref_table (&state->streams[LTO_DECL_STREAM_FN_DECL],
+ context);
+}
+
+/* Scan all global variables that we have not yet seen so far. CONTEXT
+ is a globalize_context_t storing scanning states. */
+
+static void
+lto_scan_statics_in_remaining_global_vars (globalize_context_t *context)
+{
+ tree var, var_context;
+ struct varpool_node *vnode;
+
+ FOR_EACH_STATIC_VARIABLE (vnode)
+ {
+ var = vnode->decl;
+ var_context = DECL_CONTEXT (var);
+ if (TREE_STATIC (var)
+ && TREE_PUBLIC (var)
+ && (!var_context || TREE_CODE (var_context) != FUNCTION_DECL)
+ && !bitmap_bit_p (context->all_vars, DECL_UID (var)))
+ walk_tree (&var, globalize_cross_file_statics, context,
+ context->visited);
+ }
+}
+
+/* Find out all static decls that need to be promoted to global because
+ of cross file sharing. This function must be run in the WPA mode after
+ all inlinees are added. */
+
+static void
+lto_promote_cross_file_statics (void)
+{
+ unsigned i, n_sets;
+ cgraph_node_set set;
+ cgraph_node_set_iterator csi;
+ globalize_context_t context;
+
+ memset (&context, 0, sizeof (context));
+ context.all_vars = lto_bitmap_alloc ();
+ context.all_static_vars = lto_bitmap_alloc ();
+
+ n_sets = VEC_length (cgraph_node_set, lto_cgraph_node_sets);
+ for (i = 0; i < n_sets; i++)
+ {
+ set = VEC_index (cgraph_node_set, lto_cgraph_node_sets, i);
+ context.set = set;
+ context.visited = pointer_set_create ();
+ context.static_vars_in_set = lto_bitmap_alloc ();
+ context.seen_node_decls = lto_bitmap_alloc ();
+
+ for (csi = csi_start (set); !csi_end_p (csi); csi_next (&csi))
+ lto_scan_statics_in_cgraph_node (csi_node (csi), &context);
+
+ if (i == n_sets - 1)
+ lto_scan_statics_in_remaining_global_vars (&context);
+
+ bitmap_ior_into (context.all_static_vars, context.static_vars_in_set);
+
+ pointer_set_destroy (context.visited);
+ lto_bitmap_free (context.static_vars_in_set);
+ lto_bitmap_free (context.seen_node_decls);
+ }
+
+ lto_bitmap_free (context.all_vars);
+ lto_bitmap_free (context.all_static_vars);
+}
+
+
+/* Given a file name FNAME, return a string with FNAME prefixed with '*'. */
+
+static char *
+prefix_name_with_star (const char *fname)
+{
+ char *star_fname;
+ size_t len;
+
+ len = strlen (fname) + 1 + 1;
+ star_fname = XNEWVEC (char, len);
+ snprintf (star_fname, len, "*%s", fname);
+
+ return star_fname;
+}
+
+
+/* Return a copy of FNAME without the .o extension. */
+
+static char *
+strip_extension (const char *fname)
+{
+ char *s = XNEWVEC (char, strlen (fname) - 2 + 1);
+ gcc_assert (strstr (fname, ".o"));
+ snprintf (s, strlen (fname) - 2 + 1, "%s", fname);
+
+ return s;
+}
+
+
+/* Return a file name associated with cgraph node set SET. This may
+ be a new temporary file name if SET needs to be processed by
+ LTRANS, or the original file name if all the nodes in SET belong to
+ the same input file. */
+
+static char *
+get_filename_for_set (cgraph_node_set set)
+{
+ char *fname = NULL;
+ static const size_t max_fname_len = 100;
+
+ if (cgraph_node_set_needs_ltrans_p (set))
+ {
+ /* Create a new temporary file to store SET. To facilitate
+ debugging, use file names from SET as part of the new
+ temporary file name. */
+ cgraph_node_set_iterator si;
+ struct pointer_set_t *pset = pointer_set_create ();
+ for (si = csi_start (set); !csi_end_p (si); csi_next (&si))
+ {
+ struct cgraph_node *n = csi_node (si);
+ const char *node_fname;
+ char *f;
+
+ /* Don't use the same file name more than once. */
+ if (pointer_set_insert (pset, n->local.lto_file_data))
+ continue;
+
+ /* The first file name found in SET determines the output
+ directory. For the remaining files, we use their
+ base names. */
+ node_fname = n->local.lto_file_data->file_name;
+ if (fname == NULL)
+ {
+ fname = strip_extension (node_fname);
+ continue;
+ }
+
+ f = strip_extension (lbasename (node_fname));
+
+ /* If the new name causes an excessively long file name,
+ make the last component "___" to indicate overflow. */
+ if (strlen (fname) + strlen (f) > max_fname_len - 3)
+ {
+ fname = reconcat (fname, fname, "___", NULL);
+ break;
+ }
+ else
+ {
+ fname = reconcat (fname, fname, "_", f, NULL);
+ free (f);
+ }
+ }
+
+ pointer_set_destroy (pset);
+
+ /* Add the extension .wpa.o to indicate that this file has been
+ produced by WPA. */
+ fname = reconcat (fname, fname, ".wpa.o", NULL);
+ gcc_assert (fname);
+ }
+ else
+ {
+ /* Since SET does not need to be processed by LTRANS, use
+ the original file name and mark it with a '*' prefix so that
+ lto_execute_ltrans knows not to process it. */
+ cgraph_node_set_iterator si = csi_start (set);
+ struct cgraph_node *first = csi_node (si);
+ fname = prefix_name_with_star (first->local.lto_file_data->file_name);
+ }
+
+ return fname;
+}
+
+static lto_file *current_lto_file;
+
+
+/* Write all output files in WPA mode. Returns a NULL-terminated array of
+ output file names. */
+
+static char **
+lto_wpa_write_files (void)
+{
+ char **output_files;
+ unsigned i, n_sets, last_out_file_ix, num_out_files;
+ lto_file *file;
+ cgraph_node_set set;
+ bitmap decls;
+ VEC(bitmap,heap) *inlined_decls = NULL;
+
+ timevar_push (TV_WHOPR_WPA);
+
+ /* Include all inlined functions and determine what sets need to be
+ compiled by LTRANS. After this loop, only those sets that
+ contain callgraph nodes from more than one file will need to be
+ compiled by LTRANS. */
+ for (i = 0; VEC_iterate (cgraph_node_set, lto_cgraph_node_sets, i, set); i++)
+ {
+ decls = lto_add_all_inlinees (set);
+ VEC_safe_push (bitmap, heap, inlined_decls, decls);
+ lto_stats.num_output_cgraph_nodes += VEC_length (cgraph_node_ptr,
+ set->nodes);
+ }
+
+ /* After adding all inlinees, find out statics that need to be promoted
+ to globals because of cross-file inlining. */
+ lto_promote_cross_file_statics ();
+
+ timevar_pop (TV_WHOPR_WPA);
+
+ timevar_push (TV_WHOPR_WPA_IO);
+
+ /* The number of output files depends on the number of input files
+ and how many callgraph node sets we create. Reserve enough space
+ for the maximum of these two. */
+ num_out_files = MAX (VEC_length (cgraph_node_set, lto_cgraph_node_sets),
+ num_in_fnames);
+ output_files = XNEWVEC (char *, num_out_files + 1);
+
+ n_sets = VEC_length (cgraph_node_set, lto_cgraph_node_sets);
+ for (i = 0; i < n_sets; i++)
+ {
+ char *temp_filename;
+
+ set = VEC_index (cgraph_node_set, lto_cgraph_node_sets, i);
+ temp_filename = get_filename_for_set (set);
+ output_files[i] = temp_filename;
+
+ if (cgraph_node_set_needs_ltrans_p (set))
+ {
+ /* Write all the nodes in SET to TEMP_FILENAME. */
+ file = lto_elf_file_open (temp_filename, true);
+ if (!file)
+ fatal_error ("lto_elf_file_open() failed");
+
+ lto_set_current_out_file (file);
+ lto_new_extern_inline_states ();
+
+ decls = VEC_index (bitmap, inlined_decls, i);
+ lto_force_functions_extern_inline (decls);
+
+ ipa_write_summaries_of_cgraph_node_set (set);
+ lto_delete_extern_inline_states ();
+
+ lto_set_current_out_file (NULL);
+ lto_elf_file_close (file);
+ }
+ }
+
+ last_out_file_ix = n_sets;
+
+ lto_stats.num_output_files += n_sets;
+
+ output_files[last_out_file_ix] = NULL;
+
+ for (i = 0; VEC_iterate (bitmap, inlined_decls, i, decls); i++)
+ lto_bitmap_free (decls);
+ VEC_free (bitmap, heap, inlined_decls);
+
+ timevar_pop (TV_WHOPR_WPA_IO);
+
+ return output_files;
+}
+
+
+/* Perform local transformations (LTRANS) on the files in the NULL-terminated
+ FILES array. These should have been written previously by
+ lto_wpa_write_files (). Transformations are performed via executing
+ COLLECT_GCC for reach file. */
+
+static void
+lto_execute_ltrans (char *const *files)
+{
+ struct pex_obj *pex;
+ const char *collect_gcc_options, *collect_gcc;
+ struct obstack env_obstack;
+ const char **argv;
+ const char **argv_ptr;
+ const char *errmsg;
+ size_t i, j;
+ int err;
+ int status;
+ FILE *ltrans_output_list_stream = NULL;
+
+ timevar_push (TV_WHOPR_WPA_LTRANS_EXEC);
+
+ /* Get the driver and options. */
+ collect_gcc = getenv ("COLLECT_GCC");
+ if (!collect_gcc)
+ fatal_error ("environment variable COLLECT_GCC must be set");
+
+ /* Set the CFLAGS environment variable. */
+ collect_gcc_options = getenv ("COLLECT_GCC_OPTIONS");
+ if (!collect_gcc_options)
+ fatal_error ("environment variable COLLECT_GCC_OPTIONS must be set");
+
+ /* Count arguments. */
+ i = 0;
+ for (j = 0; collect_gcc_options[j] != '\0'; ++j)
+ if (collect_gcc_options[j] == '\'')
+ ++i;
+
+ if (i % 2 != 0)
+ fatal_error ("malformed COLLECT_GCC_OPTIONS");
+
+ /* Initalize the arguments for the LTRANS driver. */
+ argv = XNEWVEC (const char *, 8 + i / 2);
+ argv_ptr = argv;
+ *argv_ptr++ = collect_gcc;
+ *argv_ptr++ = "-xlto";
+ for (j = 0; collect_gcc_options[j] != '\0'; ++j)
+ if (collect_gcc_options[j] == '\'')
+ {
+ char *option;
+
+ ++j;
+ i = j;
+ while (collect_gcc_options[j] != '\'')
+ ++j;
+ obstack_init (&env_obstack);
+ obstack_grow (&env_obstack, &collect_gcc_options[i], j - i);
+ obstack_1grow (&env_obstack, 0);
+ option = XOBFINISH (&env_obstack, char *);
+
+ /* LTRANS does not need -fwpa nor -fltrans-*. */
+ if (strncmp (option, "-fwpa", 5) != 0
+ && strncmp (option, "-fltrans-", 9) != 0)
+ *argv_ptr++ = option;
+ }
+ *argv_ptr++ = "-fltrans";
+
+ /* Open the LTRANS output list. */
+ if (ltrans_output_list)
+ {
+ ltrans_output_list_stream = fopen (ltrans_output_list, "w");
+ if (ltrans_output_list_stream == NULL)
+ error ("opening LTRANS output list %s: %m", ltrans_output_list);
+ }
+
+ for (i = 0; files[i]; ++i)
+ {
+ size_t len;
+
+ /* If the file is prefixed with a '*', it means that we do not
+ need to re-compile it with LTRANS because it has not been
+ modified by WPA. Skip it from the command line to
+ lto_execute_ltrans, but add it to ltrans_output_list_stream
+ so it is linked after we are done. */
+ if (files[i][0] == '*')
+ {
+ size_t len = strlen (files[i]) - 1;
+ if (ltrans_output_list_stream)
+ if (fwrite (&files[i][1], 1, len, ltrans_output_list_stream) < len
+ || fwrite ("\n", 1, 1, ltrans_output_list_stream) < 1)
+ error ("writing to LTRANS output list %s: %m",
+ ltrans_output_list);
+ }
+ else
+ {
+ char *output_name;
+
+ /* Otherwise, add FILES[I] to lto_execute_ltrans command line
+ and add the resulting file to LTRANS output list. */
+
+ /* Replace the .o suffix with a .ltrans.o suffix and write
+ the resulting name to the LTRANS output list. */
+ obstack_init (&env_obstack);
+ obstack_grow (&env_obstack, files[i], strlen (files[i]) - 2);
+ obstack_grow (&env_obstack, ".ltrans.o", sizeof (".ltrans.o"));
+ output_name = XOBFINISH (&env_obstack, char *);
+ if (ltrans_output_list_stream)
+ {
+ len = strlen (output_name);
+
+ if (fwrite (output_name, 1, len, ltrans_output_list_stream) < len
+ || fwrite ("\n", 1, 1, ltrans_output_list_stream) < 1)
+ error ("writing to LTRANS output list %s: %m",
+ ltrans_output_list);
+ }
+
+ argv_ptr[0] = "-o";
+ argv_ptr[1] = output_name;
+ argv_ptr[2] = files[i];
+ argv_ptr[3] = NULL;
+
+ /* Execute the driver. */
+ pex = pex_init (0, "lto1", NULL);
+ if (pex == NULL)
+ fatal_error ("pex_init failed: %s", xstrerror (errno));
+
+ errmsg = pex_run (pex, PEX_LAST | PEX_SEARCH, argv[0],
+ CONST_CAST (char **, argv), NULL, NULL, &err);
+ if (errmsg)
+ fatal_error ("%s: %s", errmsg, xstrerror (err));
+
+ if (!pex_get_status (pex, 1, &status))
+ fatal_error ("can't get program status: %s", xstrerror (errno));
+
+ if (status)
+ {
+ if (WIFSIGNALED (status))
+ {
+ int sig = WTERMSIG (status);
+ fatal_error ("%s terminated with signal %d [%s]%s",
+ argv[0], sig, strsignal (sig),
+ WCOREDUMP (status) ? ", core dumped" : "");
+ }
+ else
+ fatal_error ("%s terminated with status %d", argv[0], status);
+ }
+
+ pex_free (pex);
+ }
+ }
+
+ /* Close the LTRANS output list. */
+ if (ltrans_output_list_stream && fclose (ltrans_output_list_stream))
+ error ("closing LTRANS output list %s: %m", ltrans_output_list);
+
+ obstack_free (&env_obstack, NULL);
+ free (argv);
+
+ timevar_pop (TV_WHOPR_WPA_LTRANS_EXEC);
+}
+
+
+typedef struct {
+ struct pointer_set_t *free_list;
+ struct pointer_set_t *seen;
+} lto_fixup_data_t;
+
+#define LTO_FIXUP_SUBTREE(t) \
+ do \
+ walk_tree (&(t), lto_fixup_tree, data, NULL); \
+ while (0)
+
+#define LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE(t) \
+ do \
+ { \
+ if (t) \
+ (t) = gimple_register_type (t); \
+ walk_tree (&(t), lto_fixup_tree, data, NULL); \
+ } \
+ while (0)
+
+static tree lto_fixup_tree (tree *, int *, void *);
+
+/* Return true if T does not need to be fixed up recursively. */
+
+static inline bool
+no_fixup_p (tree t)
+{
+ return (t == NULL
+ || CONSTANT_CLASS_P (t)
+ || TREE_CODE (t) == IDENTIFIER_NODE);
+}
+
+/* Fix up fields of a tree_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_common (tree t, void *data)
+{
+ /* The following re-creates the TYPE_REFERENCE_TO and TYPE_POINTER_TO
+ lists. We do not stream TYPE_REFERENCE_TO, TYPE_POINTER_TO or
+ TYPE_NEXT_PTR_TO and TYPE_NEXT_REF_TO.
+ First remove us from any pointer list we are on. */
+ if (TREE_CODE (t) == POINTER_TYPE)
+ {
+ if (TYPE_POINTER_TO (TREE_TYPE (t)) == t)
+ TYPE_POINTER_TO (TREE_TYPE (t)) = TYPE_NEXT_PTR_TO (t);
+ else
+ {
+ tree tem = TYPE_POINTER_TO (TREE_TYPE (t));
+ while (tem && TYPE_NEXT_PTR_TO (tem) != t)
+ tem = TYPE_NEXT_PTR_TO (tem);
+ if (tem)
+ TYPE_NEXT_PTR_TO (tem) = TYPE_NEXT_PTR_TO (t);
+ }
+ TYPE_NEXT_PTR_TO (t) = NULL_TREE;
+ }
+ else if (TREE_CODE (t) == REFERENCE_TYPE)
+ {
+ if (TYPE_REFERENCE_TO (TREE_TYPE (t)) == t)
+ TYPE_REFERENCE_TO (TREE_TYPE (t)) = TYPE_NEXT_REF_TO (t);
+ else
+ {
+ tree tem = TYPE_REFERENCE_TO (TREE_TYPE (t));
+ while (tem && TYPE_NEXT_REF_TO (tem) != t)
+ tem = TYPE_NEXT_REF_TO (tem);
+ if (tem)
+ TYPE_NEXT_REF_TO (tem) = TYPE_NEXT_REF_TO (t);
+ }
+ TYPE_NEXT_REF_TO (t) = NULL_TREE;
+ }
+
+ /* Fixup our type. */
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TREE_TYPE (t));
+
+ /* Second put us on the list of pointers of the new pointed-to type
+ if we are a main variant. This is done in lto_fixup_type after
+ fixing up our main variant. */
+
+ /* This is not very efficient because we cannot do tail-recursion with
+ a long chain of trees. */
+ LTO_FIXUP_SUBTREE (TREE_CHAIN (t));
+}
+
+/* Fix up fields of a decl_minimal T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_minimal (tree t, void *data)
+{
+ lto_fixup_common (t, data);
+ LTO_FIXUP_SUBTREE (DECL_NAME (t));
+ LTO_FIXUP_SUBTREE (DECL_CONTEXT (t));
+}
+
+/* Fix up fields of a decl_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_common (tree t, void *data)
+{
+ lto_fixup_decl_minimal (t, data);
+ LTO_FIXUP_SUBTREE (DECL_SIZE (t));
+ LTO_FIXUP_SUBTREE (DECL_SIZE_UNIT (t));
+ LTO_FIXUP_SUBTREE (DECL_INITIAL (t));
+ LTO_FIXUP_SUBTREE (DECL_ATTRIBUTES (t));
+ LTO_FIXUP_SUBTREE (DECL_ABSTRACT_ORIGIN (t));
+}
+
+/* Fix up fields of a decl_with_vis T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_with_vis (tree t, void *data)
+{
+ lto_fixup_decl_common (t, data);
+
+ /* Accessor macro has side-effects, use field-name here. */
+ LTO_FIXUP_SUBTREE (t->decl_with_vis.assembler_name);
+
+ gcc_assert (no_fixup_p (DECL_SECTION_NAME (t)));
+}
+
+/* Fix up fields of a decl_non_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_decl_non_common (tree t, void *data)
+{
+ lto_fixup_decl_with_vis (t, data);
+ LTO_FIXUP_SUBTREE (DECL_ARGUMENT_FLD (t));
+ LTO_FIXUP_SUBTREE (DECL_RESULT_FLD (t));
+ LTO_FIXUP_SUBTREE (DECL_VINDEX (t));
+
+ /* SAVED_TREE should not cleared by now. Also no accessor for base type. */
+ gcc_assert (no_fixup_p (t->decl_non_common.saved_tree));
+}
+
+/* Fix up fields of a decl_non_common T. DATA points to fix-up states. */
+
+static void
+lto_fixup_function (tree t, void *data)
+{
+ lto_fixup_decl_non_common (t, data);
+ LTO_FIXUP_SUBTREE (DECL_FUNCTION_PERSONALITY (t));
+}
+
+/* Fix up fields of a field_decl T. DATA points to fix-up states. */
+
+static void
+lto_fixup_field_decl (tree t, void *data)
+{
+ lto_fixup_decl_common (t, data);
+ gcc_assert (no_fixup_p (DECL_FIELD_OFFSET (t)));
+ LTO_FIXUP_SUBTREE (DECL_BIT_FIELD_TYPE (t));
+ LTO_FIXUP_SUBTREE (DECL_QUALIFIER (t));
+ gcc_assert (no_fixup_p (DECL_FIELD_BIT_OFFSET (t)));
+ LTO_FIXUP_SUBTREE (DECL_FCONTEXT (t));
+}
+
+/* Fix up fields of a type T. DATA points to fix-up states. */
+
+static void
+lto_fixup_type (tree t, void *data)
+{
+ tree tem, mv;
+
+ lto_fixup_common (t, data);
+ LTO_FIXUP_SUBTREE (TYPE_CACHED_VALUES (t));
+ LTO_FIXUP_SUBTREE (TYPE_SIZE (t));
+ LTO_FIXUP_SUBTREE (TYPE_SIZE_UNIT (t));
+ LTO_FIXUP_SUBTREE (TYPE_ATTRIBUTES (t));
+ LTO_FIXUP_SUBTREE (TYPE_NAME (t));
+
+ /* Accessors are for derived node types only. */
+ if (!POINTER_TYPE_P (t))
+ LTO_FIXUP_SUBTREE (t->type.minval);
+ LTO_FIXUP_SUBTREE (t->type.maxval);
+
+ /* Accessor is for derived node types only. */
+ LTO_FIXUP_SUBTREE (t->type.binfo);
+
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TYPE_CONTEXT (t));
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TYPE_CANONICAL (t));
+
+ /* The following re-creates proper variant lists while fixing up
+ the variant leaders. We do not stream TYPE_NEXT_VARIANT so the
+ variant list state before fixup is broken. */
+
+ /* Remove us from our main variant list if we are not the variant leader. */
+ if (TYPE_MAIN_VARIANT (t) != t)
+ {
+ tem = TYPE_MAIN_VARIANT (t);
+ while (tem && TYPE_NEXT_VARIANT (tem) != t)
+ tem = TYPE_NEXT_VARIANT (tem);
+ if (tem)
+ TYPE_NEXT_VARIANT (tem) = TYPE_NEXT_VARIANT (t);
+ TYPE_NEXT_VARIANT (t) = NULL_TREE;
+ }
+
+ /* Query our new main variant. */
+ mv = gimple_register_type (TYPE_MAIN_VARIANT (t));
+
+ /* If we were the variant leader and we get replaced ourselves drop
+ all variants from our list. */
+ if (TYPE_MAIN_VARIANT (t) == t
+ && mv != t)
+ {
+ tem = t;
+ while (tem)
+ {
+ tree tem2 = TYPE_NEXT_VARIANT (tem);
+ TYPE_NEXT_VARIANT (tem) = NULL_TREE;
+ tem = tem2;
+ }
+ }
+
+ /* If we are not our own variant leader link us into our new leaders
+ variant list. */
+ if (mv != t)
+ {
+ TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (mv);
+ TYPE_NEXT_VARIANT (mv) = t;
+ }
+
+ /* Finally adjust our main variant and fix it up. */
+ TYPE_MAIN_VARIANT (t) = mv;
+ LTO_FIXUP_SUBTREE (TYPE_MAIN_VARIANT (t));
+
+ /* As the second step of reconstructing the pointer chains put us
+ on the list of pointers of the new pointed-to type
+ if we are a main variant. See lto_fixup_common for the first step. */
+ if (TREE_CODE (t) == POINTER_TYPE
+ && TYPE_MAIN_VARIANT (t) == t)
+ {
+ TYPE_NEXT_PTR_TO (t) = TYPE_POINTER_TO (TREE_TYPE (t));
+ TYPE_POINTER_TO (TREE_TYPE (t)) = t;
+ }
+ else if (TREE_CODE (t) == REFERENCE_TYPE
+ && TYPE_MAIN_VARIANT (t) == t)
+ {
+ TYPE_NEXT_REF_TO (t) = TYPE_REFERENCE_TO (TREE_TYPE (t));
+ TYPE_REFERENCE_TO (TREE_TYPE (t)) = t;
+ }
+}
+
+/* Fix up fields of a BINFO T. DATA points to fix-up states. */
+
+static void
+lto_fixup_binfo (tree t, void *data)
+{
+ unsigned HOST_WIDE_INT i, n;
+ tree base, saved_base;
+
+ lto_fixup_common (t, data);
+ gcc_assert (no_fixup_p (BINFO_OFFSET (t)));
+ LTO_FIXUP_SUBTREE (BINFO_VTABLE (t));
+ LTO_FIXUP_SUBTREE (BINFO_VIRTUALS (t));
+ LTO_FIXUP_SUBTREE (BINFO_VPTR_FIELD (t));
+ n = VEC_length (tree, BINFO_BASE_ACCESSES (t));
+ for (i = 0; i < n; i++)
+ {
+ saved_base = base = BINFO_BASE_ACCESS (t, i);
+ LTO_FIXUP_SUBTREE (base);
+ if (base != saved_base)
+ VEC_replace (tree, BINFO_BASE_ACCESSES (t), i, base);
+ }
+ LTO_FIXUP_SUBTREE (BINFO_INHERITANCE_CHAIN (t));
+ LTO_FIXUP_SUBTREE (BINFO_SUBVTT_INDEX (t));
+ LTO_FIXUP_SUBTREE (BINFO_VPTR_INDEX (t));
+ n = BINFO_N_BASE_BINFOS (t);
+ for (i = 0; i < n; i++)
+ {
+ saved_base = base = BINFO_BASE_BINFO (t, i);
+ LTO_FIXUP_SUBTREE (base);
+ if (base != saved_base)
+ VEC_replace (tree, BINFO_BASE_BINFOS (t), i, base);
+ }
+}
+
+/* Fix up fields of a CONSTRUCTOR T. DATA points to fix-up states. */
+
+static void
+lto_fixup_constructor (tree t, void *data)
+{
+ unsigned HOST_WIDE_INT idx;
+ constructor_elt *ce;
+
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TREE_TYPE (t));
+
+ for (idx = 0;
+ VEC_iterate(constructor_elt, CONSTRUCTOR_ELTS (t), idx, ce);
+ idx++)
+ {
+ LTO_FIXUP_SUBTREE (ce->index);
+ LTO_FIXUP_SUBTREE (ce->value);
+ }
+}
+
+/* A walk_tree callback used by lto_fixup_state. TP is the pointer to the
+ current tree. WALK_SUBTREES indicates if the subtrees will be walked.
+ DATA is a pointer set to record visited nodes. */
+
+static tree
+lto_fixup_tree (tree *tp, int *walk_subtrees, void *data)
+{
+ tree t;
+ lto_fixup_data_t *fixup_data = (lto_fixup_data_t *) data;
+ tree prevailing;
+
+ t = *tp;
+ *walk_subtrees = 0;
+ if (pointer_set_contains (fixup_data->seen, t))
+ return NULL;
+
+ if (TREE_CODE (t) == VAR_DECL || TREE_CODE (t) == FUNCTION_DECL)
+ {
+ prevailing = lto_symtab_prevailing_decl (t);
+
+ if (t != prevailing)
+ {
+ if (TREE_CODE (t) == FUNCTION_DECL
+ && TREE_NOTHROW (prevailing) != TREE_NOTHROW (t))
+ {
+ /* If the prevailing definition does not throw but the
+ declaration (T) was considered throwing, then we
+ simply add PREVAILING to the list of throwing
+ functions. However, if the opposite is true, then
+ the call to PREVAILING was generated assuming that
+ the function didn't throw, which means that CFG
+ cleanup may have removed surrounding try/catch
+ regions.
+
+ Note that we currently accept these cases even when
+ they occur within a single file. It's certainly a
+ user error, but we silently allow the compiler to
+ remove surrounding try/catch regions. Perhaps we
+ could emit a warning here, instead of silently
+ accepting the conflicting declaration. */
+ if (TREE_NOTHROW (prevailing))
+ lto_mark_nothrow_fndecl (prevailing);
+ }
+
+ pointer_set_insert (fixup_data->free_list, t);
+
+ /* Also replace t with prevailing defintion. We don't want to
+ insert the other defintion in the seen set as we want to
+ replace all instances of it. */
+ *tp = prevailing;
+ t = prevailing;
+ }
+ }
+ else if (TYPE_P (t))
+ {
+ /* Replace t with the prevailing type. We don't want to insert the
+ other type in the seen set as we want to replace all instances of it. */
+ t = gimple_register_type (t);
+ *tp = t;
+ }
+
+ if (pointer_set_insert (fixup_data->seen, t))
+ return NULL;
+
+ /* walk_tree does not visit all reachable nodes that need to be fixed up.
+ Hence we do special processing here for those kind of nodes. */
+ switch (TREE_CODE (t))
+ {
+ case FIELD_DECL:
+ lto_fixup_field_decl (t, data);
+ break;
+
+ case LABEL_DECL:
+ case CONST_DECL:
+ case PARM_DECL:
+ case RESULT_DECL:
+ case IMPORTED_DECL:
+ lto_fixup_decl_common (t, data);
+ break;
+
+ case VAR_DECL:
+ lto_fixup_decl_with_vis (t, data);
+ break;
+
+ case TYPE_DECL:
+ lto_fixup_decl_non_common (t, data);
+ break;
+
+ case FUNCTION_DECL:
+ lto_fixup_function (t, data);
+ break;
+
+ case TREE_BINFO:
+ lto_fixup_binfo (t, data);
+ break;
+
+ default:
+ if (TYPE_P (t))
+ lto_fixup_type (t, data);
+ else if (TREE_CODE (t) == CONSTRUCTOR)
+ lto_fixup_constructor (t, data);
+ else if (CONSTANT_CLASS_P (t))
+ LTO_REGISTER_TYPE_AND_FIXUP_SUBTREE (TREE_TYPE (t));
+ else if (EXPR_P (t))
+ {
+ /* walk_tree only handles TREE_OPERANDs. Do the rest here. */
+ lto_fixup_common (t, data);
+ LTO_FIXUP_SUBTREE (t->exp.block);
+ *walk_subtrees = 1;
+ }
+ else
+ {
+ /* Let walk_tree handle sub-trees. */
+ *walk_subtrees = 1;
+ }
+ }
+
+ return NULL;
+}
+
+/* Helper function of lto_fixup_decls. Walks the var and fn streams in STATE,
+ replaces var and function decls with the corresponding prevailing def and
+ records the old decl in the free-list in DATA. We also record visted nodes
+ in the seen-set in DATA to avoid multiple visit for nodes that need not
+ to be replaced. */
+
+static void
+lto_fixup_state (struct lto_in_decl_state *state, lto_fixup_data_t *data)
+{
+ unsigned i, si;
+ struct lto_tree_ref_table *table;
+
+ /* Although we only want to replace FUNCTION_DECLs and VAR_DECLs,
+ we still need to walk from all DECLs to find the reachable
+ FUNCTION_DECLs and VAR_DECLs. */
+ for (si = 0; si < LTO_N_DECL_STREAMS; si++)
+ {
+ table = &state->streams[si];
+ for (i = 0; i < table->size; i++)
+ walk_tree (table->trees + i, lto_fixup_tree, data, NULL);
+ }
+}
+
+/* A callback of htab_traverse. Just extract a state from SLOT and the
+ lto_fixup_data_t object from AUX and calls lto_fixup_state. */
+
+static int
+lto_fixup_state_aux (void **slot, void *aux)
+{
+ struct lto_in_decl_state *state = (struct lto_in_decl_state *) *slot;
+ lto_fixup_state (state, (lto_fixup_data_t *) aux);
+ return 1;
+}
+
+/* A callback to pointer_set_traverse. Frees the tree pointed by p. Removes
+ from it from the UID -> DECL mapping. */
+
+static bool
+free_decl (const void *p, void *data ATTRIBUTE_UNUSED)
+{
+ const_tree ct = (const_tree) p;
+ tree t = CONST_CAST_TREE (ct);
+
+ lto_symtab_clear_resolution (t);
+
+ return true;
+}
+
+/* Fix the decls from all FILES. Replaces each decl with the corresponding
+ prevailing one. */
+
+static void
+lto_fixup_decls (struct lto_file_decl_data **files)
+{
+ unsigned int i;
+ tree decl;
+ struct pointer_set_t *free_list = pointer_set_create ();
+ struct pointer_set_t *seen = pointer_set_create ();
+ lto_fixup_data_t data;
+
+ data.free_list = free_list;
+ data.seen = seen;
+ for (i = 0; files[i]; i++)
+ {
+ struct lto_file_decl_data *file = files[i];
+ struct lto_in_decl_state *state = file->global_decl_state;
+ lto_fixup_state (state, &data);
+
+ htab_traverse (file->function_decl_states, lto_fixup_state_aux, &data);
+ }
+
+ for (i = 0; VEC_iterate (tree, lto_global_var_decls, i, decl); i++)
+ {
+ tree saved_decl = decl;
+ walk_tree (&decl, lto_fixup_tree, &data, NULL);
+ if (decl != saved_decl)
+ VEC_replace (tree, lto_global_var_decls, i, decl);
+ }
+
+ pointer_set_traverse (free_list, free_decl, NULL);
+ pointer_set_destroy (free_list);
+ pointer_set_destroy (seen);
+}
+
+/* Unlink a temporary LTRANS file unless requested otherwise. */
+
+static void
+lto_maybe_unlink (const char *file)
+{
+ if (!getenv ("WPA_SAVE_LTRANS"))
+ {
+ if (unlink_if_ordinary (file))
+ error ("deleting LTRANS input file %s: %m", file);
+ }
+ else
+ fprintf (stderr, "[Leaving LTRANS input file %s]\n", file);
+}
+
+/* Read the options saved from each file in the command line. Called
+ from lang_hooks.post_options which is called by process_options
+ right before all the options are used to initialize the compiler.
+ This assumes that decode_options has already run, so the
+ num_in_fnames and in_fnames are properly set.
+
+ Note that this assumes that all the files had been compiled with
+ the same options, which is not a good assumption. In general,
+ options ought to be read from all the files in the set and merged.
+ However, it is still unclear what the merge rules should be. */
+
+void
+lto_read_all_file_options (void)
+{
+ size_t i;
+
+ /* Clear any file options currently saved. */
+ lto_clear_file_options ();
+
+ /* Set the hooks to read ELF sections. */
+ lto_set_in_hooks (NULL, get_section_data, free_section_data);
+
+ for (i = 0; i < num_in_fnames; i++)
+ {
+ struct lto_file_decl_data *file_data;
+ lto_file *file = lto_elf_file_open (in_fnames[i], false);
+ if (!file)
+ break;
+
+ file_data = XCNEW (struct lto_file_decl_data);
+ file_data->file_name = file->filename;
+ file_data->fd = -1;
+ file_data->section_hash_table = lto_elf_build_section_table (file);
+
+ lto_read_file_options (file_data);
+
+ lto_elf_file_close (file);
+ htab_delete (file_data->section_hash_table);
+ if (file_data->fd != -1)
+ close (file_data->fd);
+ free (file_data);
+ }
+
+ /* Apply globally the options read from all the files. */
+ lto_reissue_options ();
+}
+
+
+/* Read all the symbols from the input files FNAMES. NFILES is the
+ number of files requested in the command line. Instantiate a
+ global call graph by aggregating all the sub-graphs found in each
+ file. */
+
+static void
+read_cgraph_and_symbols (unsigned nfiles, const char **fnames)
+{
+ unsigned int i, last_file_ix;
+ struct lto_file_decl_data **all_file_decl_data;
+ FILE *resolution;
+
+ lto_stats.num_input_files = nfiles;
+
+ timevar_push (TV_IPA_LTO_DECL_IO);
+
+ /* Set the hooks so that all of the ipa passes can read in their data. */
+ all_file_decl_data = XNEWVEC (struct lto_file_decl_data *, nfiles + 1);
+ lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data);
+
+ /* Read the resolution file. */
+ resolution = NULL;
+ if (resolution_file_name)
+ {
+ int t;
+ unsigned num_objects;
+
+ resolution = fopen (resolution_file_name, "r");
+ gcc_assert (resolution != NULL);
+ t = fscanf (resolution, "%u", &num_objects);
+ gcc_assert (t == 1);
+
+ /* True, since the plugin splits the archives. */
+ gcc_assert (num_objects == nfiles);
+ }
+
+ /* Read all of the object files specified on the command line. */
+ for (i = 0, last_file_ix = 0; i < nfiles; ++i)
+ {
+ struct lto_file_decl_data *file_data = NULL;
+
+ current_lto_file = lto_elf_file_open (fnames[i], false);
+ if (!current_lto_file)
+ break;
+
+ file_data = lto_file_read (current_lto_file, resolution);
+ if (!file_data)
+ break;
+
+ all_file_decl_data[last_file_ix++] = file_data;
+
+ lto_elf_file_close (current_lto_file);
+ current_lto_file = NULL;
+ }
+
+ if (resolution_file_name)
+ fclose (resolution);
+
+ all_file_decl_data[last_file_ix] = NULL;
+
+ /* Set the hooks so that all of the ipa passes can read in their data. */
+ lto_set_in_hooks (all_file_decl_data, get_section_data, free_section_data);
+
+ /* Each pass will set the appropriate timer. */
+ timevar_pop (TV_IPA_LTO_DECL_IO);
+
+ /* Read the callgraph. */
+ input_cgraph ();
+
+ ipa_read_summaries ();
+
+ timevar_push (TV_IPA_LTO_DECL_IO);
+
+ lto_fixup_decls (all_file_decl_data);
+
+ /* See if we have multiple decls for a symbol and choose the largest
+ one to generate the common. */
+ for (i = 0; i < VEC_length (tree, lto_global_var_decls); ++i)
+ {
+ tree decl = VEC_index (tree, lto_global_var_decls, i);
+ tree prev_decl = NULL_TREE;
+ tree size;
+
+ if (TREE_CODE (decl) != VAR_DECL
+ || !DECL_LANG_SPECIFIC (decl))
+ continue;
+
+ /* Find the preceeding decl of the largest one. */
+ size = DECL_SIZE (decl);
+ do
+ {
+ tree next = (tree) DECL_LANG_SPECIFIC (decl);
+ if (tree_int_cst_lt (size, DECL_SIZE (next)))
+ {
+ size = DECL_SIZE (next);
+ prev_decl = decl;
+ }
+ decl = next;
+ }
+ while (DECL_LANG_SPECIFIC (decl));
+
+ /* If necessary move the largest decl to the front of the
+ chain. */
+ if (prev_decl != NULL_TREE)
+ {
+ decl = (tree) DECL_LANG_SPECIFIC (prev_decl);
+ DECL_LANG_SPECIFIC (prev_decl) = DECL_LANG_SPECIFIC (decl);
+ DECL_LANG_SPECIFIC (decl)
+ = (struct lang_decl *) VEC_index (tree, lto_global_var_decls, i);
+ VEC_replace (tree, lto_global_var_decls, i, decl);
+ }
+
+ /* Mark everything apart from the first var as written out and
+ unlink the chain. */
+ decl = VEC_index (tree, lto_global_var_decls, i);
+ while (DECL_LANG_SPECIFIC (decl))
+ {
+ tree next = (tree) DECL_LANG_SPECIFIC (decl);
+ DECL_LANG_SPECIFIC (decl) = NULL;
+ decl = next;
+ TREE_ASM_WRITTEN (decl) = true;
+ }
+ }
+
+ /* FIXME lto. This loop needs to be changed to use the pass manager to
+ call the ipa passes directly. */
+ if (!errorcount)
+ for (i = 0; i < last_file_ix; i++)
+ {
+ struct lto_file_decl_data *file_data = all_file_decl_data [i];
+ lto_materialize_constructors_and_inits (file_data);
+ }
+
+ /* Indicate that the cgraph is built and ready. */
+ cgraph_function_flags_ready = true;
+
+ timevar_pop (TV_IPA_LTO_DECL_IO);
+}
+
+
+/* Materialize all the bodies for all the nodes in the callgraph. */
+
+static void
+materialize_cgraph (void)
+{
+ tree decl;
+ struct cgraph_node *node;
+ unsigned i;
+ timevar_id_t lto_timer;
+
+ /* Now that we have input the cgraph, we need to clear all of the aux
+ nodes and read the functions if we are not running in WPA mode. */
+ timevar_push (TV_IPA_LTO_GIMPLE_IO);
+
+ for (node = cgraph_nodes; node; node = node->next)
+ {
+ /* Some cgraph nodes get created on the fly, and they don't need
+ to be materialized. For instance, nodes for nested functions
+ where the parent function was not streamed out or builtin
+ functions. Additionally, builtin functions should not be
+ materialized and may, in fact, cause confusion because there
+ may be a regular function in the file whose assembler name
+ matches that of the function.
+ See gcc.c-torture/execute/20030125-1.c and
+ gcc.c-torture/execute/921215-1.c. */
+ if (node->local.lto_file_data
+ && !DECL_IS_BUILTIN (node->decl))
+ {
+ lto_materialize_function (node);
+ lto_stats.num_input_cgraph_nodes++;
+ }
+ }
+
+ timevar_pop (TV_IPA_LTO_GIMPLE_IO);
+
+ /* Start the appropriate timer depending on the mode that we are
+ operating in. */
+ lto_timer = (flag_wpa) ? TV_WHOPR_WPA
+ : (flag_ltrans) ? TV_WHOPR_LTRANS
+ : TV_LTO;
+ timevar_push (lto_timer);
+
+ current_function_decl = NULL;
+ set_cfun (NULL);
+
+ /* Inform the middle end about the global variables we have seen. */
+ for (i = 0; VEC_iterate (tree, lto_global_var_decls, i, decl); i++)
+ rest_of_decl_compilation (decl, 1, 0);
+
+ /* Fix up any calls to DECLs that have become not exception throwing. */
+ lto_fixup_nothrow_decls ();
+
+ timevar_pop (lto_timer);
+}
+
+
+/* Perform whole program analysis (WPA) on the callgraph and write out the
+ optimization plan. */
+
+static void
+do_whole_program_analysis (void)
+{
+ char **output_files;
+ size_t i;
+ struct cgraph_node *node;
+
+ lto_1_to_1_map ();
+
+ /* Note that since we are in WPA mode, materialize_cgraph will not
+ actually read in all the function bodies. It only materializes
+ the decls and cgraph nodes so that analysis can be performed. */
+ materialize_cgraph ();
+
+ /* Reading in the cgraph uses different timers, start timing WPA now. */
+ timevar_push (TV_WHOPR_WPA);
+
+ /* FIXME lto. Hack. We should use the IPA passes. There are a
+ number of issues with this now. 1. There is no convenient way to
+ do this. 2. Some passes may depend on properties that requires
+ the function bodies to compute. */
+ cgraph_function_flags_ready = true;
+ bitmap_obstack_initialize (NULL);
+ ipa_register_cgraph_hooks ();
+
+ /* Reset inlining information before running IPA inliner. */
+ for (node = cgraph_nodes; node; node = node->next)
+ reset_inline_failed (node);
+
+ /* FIXME lto. We should not call this function directly. */
+ pass_ipa_inline.pass.execute ();
+
+ verify_cgraph ();
+ bitmap_obstack_release (NULL);
+
+ /* We are about to launch the final LTRANS phase, stop the WPA timer. */
+ timevar_pop (TV_WHOPR_WPA);
+
+ output_files = lto_wpa_write_files ();
+
+ /* Show the LTO report before launching LTRANS. */
+ if (flag_lto_report)
+ print_lto_report ();
+
+ lto_execute_ltrans (output_files);
+
+ for (i = 0; output_files[i]; ++i)
+ {
+ if (output_files[i][0] != '*')
+ lto_maybe_unlink (output_files[i]);
+
+ free (output_files[i]);
+ }
+
+ XDELETEVEC (output_files);
+}
+
+
+/* Main entry point for the GIMPLE front end. This front end has
+ three main personalities:
+
+ - LTO (-flto). All the object files on the command line are
+ loaded in memory and processed as a single translation unit.
+ This is the traditional link-time optimization behavior.
+
+ - WPA (-fwpa). Only the callgraph and summary information for
+ files in the command file are loaded. A single callgraph
+ (without function bodies) is instantiated for the whole set of
+ files. IPA passes are only allowed to analyze the call graph
+ and make transformation decisions. The callgraph is
+ partitioned, each partition is written to a new object file
+ together with the transformation decisions.
+
+ - LTRANS (-fltrans). Similar to -flto but it prevents the IPA
+ summary files from running again. Since WPA computed summary
+ information and decided what transformations to apply, LTRANS
+ simply applies them. */
+
+void
+lto_main (int debug_p ATTRIBUTE_UNUSED)
+{
+ lto_init_reader ();
+
+ /* Read all the symbols and call graph from all the files in the
+ command line. */
+ read_cgraph_and_symbols (num_in_fnames, in_fnames);
+
+ if (!errorcount)
+ {
+ /* If WPA is enabled analyze the whole call graph and create an
+ optimization plan. Otherwise, read in all the function
+ bodies and continue with optimization. */
+ if (flag_wpa)
+ do_whole_program_analysis ();
+ else
+ {
+ materialize_cgraph ();
+
+ /* Let the middle end know that we have read and merged all of
+ the input files. */
+ cgraph_optimize ();
+
+ /* FIXME lto, if the processes spawned by WPA fail, we miss
+ the chance to print WPA's report, so WPA will call
+ print_lto_report before launching LTRANS. If LTRANS was
+ launched directly by the driver we would not need to do
+ this. */
+ if (flag_lto_report)
+ print_lto_report ();
+ }
+ }
+}
+
+#include "gt-lto-lto.h"
diff -rdupN --exclude=.svn --exclude=.git --exclude='*.diff*' --exclude='autom4te*' --exclude=tags --exclude=ChangeLog.lto /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto.h /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto.h
--- /usr/local/google/homedirs/dnovillo/gcc/trunk/gcc/lto/lto.h 1969-12-31 19:00:00.000000000 -0500
+++ /usr/local/google/homedirs/dnovillo/gcc/trunk.lto/gcc/lto/lto.h 2009-09-30 15:17:05.000000000 -0400
@@ -0,0 +1,60 @@
+/* LTO declarations.
+ Copyright 2009 Free Software Foundation, Inc.
+ Contributed by CodeSourcery, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef LTO_H
+#define LTO_H
+
+#include "hashtab.h"
+
+/* A file. */
+typedef struct lto_file_struct
+{
+ /* The name of the file. */
+ const char *filename;
+} lto_file;
+
+/* In lto-lang.c */
+extern const char *resolution_file_name;
+
+/* In lto.c */
+extern void lto_main (int);
+extern void lto_read_all_file_options (void);
+
+/* In lto-elf.c */
+extern lto_file *lto_elf_file_open (const char *filename, bool writable);
+extern void lto_elf_file_close (lto_file *file);
+extern htab_t lto_elf_build_section_table (lto_file *file);
+extern void lto_elf_begin_section (const char *name);
+extern void lto_elf_append_data (const void *data, size_t len, void *block);
+extern void lto_elf_end_section (void);
+extern lto_file *lto_set_current_out_file (lto_file *file);
+extern lto_file *lto_get_current_out_file (void);
+
+/* Hash table entry to hold the start offset and length of an LTO
+ section in a .o file. */
+struct lto_section_slot
+{
+ const char *name;
+ intptr_t start;
+ size_t len;
+};
+
+
+#endif /* LTO_H */
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