tweak

[gcc.git] / gcc / ChangeLog

Mon Sep 21 14:10:51 1998  Jason Merrill  <jason@yorick.cygnus.com>

	* toplev.c (rest_of_compilation): Skip compiling anything with
	DECL_EXTERNAL set, not just if it has DECL_INLINE as well.

Mon Sep 21 13:51:05 1998  Jim Wilson  <wilson@cygnus.com>

	* flow.c (find_basic_blocks): Delete check for in_libcall_block when
	prev_code is a CALL_INSN.  Change check for REG_RETVAL note to
	use in_libcall_block.
	(find_basic_blocks_1): Delete check for in_libcall_block when prev_code
	is a CALL_INSN.  If CALL_INSN and in_libcall_block, then change code
	to INSN.

Mon Sep 21 14:02:23 1998

	* i386.h: (TARGET_SWITCHES) Improve doc for align-double.  Fix
	typo in no-fancy-math-387 description.

Mon Sep 21 09:27:18 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Sep 21 09:24:49 1998   Stan Cox  <scox@cygnus.com>

	* i386-coff.h (DBX_DEBUGGING_INFO): Added.

Mon Sep 21 09:14:49 1998   Robert Lipe  <robertl@dgii.com>

	* i386.h: (TARGET_SWITCHES) Add description fields for flags 
	documented in install.texi.
	(TARGET_OPTIONS) Likewise.

Mon Sep 21 01:39:03 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Sep 21 01:53:05 1998  Felix Lee  <flee@cygnus.com>

	* c-lex.c (init_lex): Use getenv ("LANG"), not GET_ENVIRONMENT ().
	* cccp.c (main): Likewise.

	* cccp.c, collect2.c, cpplib.c, gcc.c, config/i386/xm-cygwin32.h:
	Rename GET_ENVIRONMENT to GET_ENV_PATH_LIST, and fix some
	macro-use bugs.

Mon Sep 21 00:52:12 1998  Per Bothner  <bothner@cygnus.com>

	* Makefile.in (LIBS):  Link in libiberty.a.
	* c-common.c, gcc.c, toplev.c:  Replace (some) bcopy calls by memcpy.

Sun Sep 20 23:28:11 1998  Richard Henderson  <rth@cygnus.com>

	* reload1.c (emit_reload_insns): Accept a new arg for the bb.  Use
	it to update bb boundaries.  Update caller.
	* function.c (reposition_prologue_and_epilogue_notes): Update
	bb boundaries wrt the moved note.

Sun Sep 20 20:57:02 1998  Robert Lipe  <robertl@dgii.com>
	
	* configure.in (i*86-*-sysv5*): Use fixinc.svr4 to patch byteorder
	problems.
	* configure: Regenerate.

Sun Sep 20 19:01:51 1998  Richard Henderson  <rth@cygnus.com>

	* alpha.c (alpha_sr_alias_set): New variable.
	(override_options): Set it.
	(alpha_expand_prologue, alpha_expand_epilogue): Use it.
	(mode_mask_operand): Fix signed-unsigned comparision warning.
	(alpha_expand_block_move): Likewise.
	(print_operand): Likewise.
	(get_aligned_mem): Use change_address.
	(alpha_set_memflags, alpha_set_memflags_1): Set the alias set.
	(alphaev4_insn_pipe, alphaev4_next_group): New functions.
	(alphaev4_next_nop, alphaev5_next_nop): New functions.
	(alpha_align_insns): Remade from old alphaev5_align_insns
	to handle multiple processors.
	(alpha_reorg): Call alpha_align_insns for both ev4 and ev5.
	* output.h (label_to_alignment): Prototype.

        * tree.c (new_alias_set): New function.
        * tree.h (new_alias_set): Declare it.
        * c-common.c (c_get_alias_set): Use it.

Sun Sep 20 12:35:55 1998  Richard Henderson  <rth@cygnus.com>

	* fold-const.c (fold): Yet another COND_EXPR bug: when folding 
	to an ABS expr, convert an unsigned input to signed.
	
Sun Sep 20 12:14:45 1998  Jeffrey A Law  (law@cygnus.com)

	* fold-const.c (fold): Fix another type in COND_EXPR handling code.

1998-09-20  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

	* configure.in: Add support for c4x targets.
	* configure: Rebuilt.

Sun Sep 20 00:00:51 1998  Richard Henderson  <rth@cygnus.com>

        * combine.c (distribute_notes): If an insn is a cc0 user, only
        delete it if we can also delete the cc0 setter.

Sun Sep 20 00:22:23 1998  Michael Tiemann  <michael@impact.tiemann.org>

	* fold-const.c (fold): Fix typo in COND_EXPR handling code.
	(invert_truthvalue): Enable truthvalue inversion for
	floating-point operands if -ffast-math.

Sat Sep 19 23:58:07 1998  Melissa O'Neill <oneill@cs.sfu.ca>
			 
	* configure.in: Disable collect2 for nextstep.  Instead use
	crtbegin/crtend.
	* configure: Rebuilt.
	* config/nextstep.h (STARTFILE_SPEC): Add crtbegin.
	(ENDFILE_SPEC): Define.
	(OBJECT_FORMAT_MACHO): Define.
	(EH_FRAME_SECTION_ASM_OP): Define.
	* crtstuff.c: Handle MACHO.

Sun Sep 20 00:24:24 1998  Robert Lipe  <robertl@dgii.com>

	* config/i386/sco5.h (TARGET_MEM_FUNCTIONS):  Define.

1998-09-19  Torbjorn Granlund  <tege@matematik.su.se>

	* fp-bit.c (pack_d): Do not clear SIGN when fraction is 0.
	(_fpadd_parts): Get sign right for 0.

1998-09-19  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

	* ginclude/varargs.h: Add support for C4x target.
	* ginclude/stdargs.h: Likewise.

Sat Sep 19 12:05:09 1998  Richard Henderson  <rth@cygnus.com>

	* alpha.c (alpha_return_addr): SET should be VOIDmode.
	(alpha_emit_set_long_const): Rewrite to be callable from reload
	and 32-bit hosts.
	(alpha_expand_epilogue): Update for alpha_emit_set_long_const.
	* alpha.md (movdi): Likewise.

Sat Sep 19 07:33:36 1998  Richard Earnshaw (rearnsha@arm.com)

	* arm.c (add_constant): New parameter address_only, change caller.
	Set it non-zero if taking the address of an item in the pool.
	(arm_reorg): Handle cases where we need the address of an item in
	the pool.

	* arm.c (bad_signed_byte_operand): Check both arms of a sum in
	a memory address.
	* arm.md (splits for *extendqihi_insn and *extendqisi_insn): Handle
	memory addresses that are not in standard canonical form.

Sat Sep 19 01:00:32 1998  Michael Hayes  (mph@elec.canterbury.ac.nz)

	* README.C4X: New file with information about the c4x ports.
	* ginclude/va-c4x.h: New file for c4x varargs support.
	* config/c4x: New directory with c4x port files.

Fri Sep 18 22:52:05 1998  Jeffrey A Law  (law@cygnus.com)

	* reload.c (find_reloads): Do not replace a pseudo with 
	(MEM (reg_equiv_addr)) in the initializing insn for the
	pseudo.

Fri Sep 18 23:50:56 1998  David Edelsohn  <edelsohn@mhpcc.edu>

	* toplev.c (rest_of_compilation): Set bct_p on second call to
	loop_optimize.
	* loop.c (loop_optimize, scan_loop, strength_reduce): New argument
	bct_p.
	(strength_reduce): Only call analyze_loop_iterations and
	insert_bct if bct_p set.
	(check_dbra_loop): Fix typo.
	(insert_bct): Use word_mode instead of SImode.
	(instrument_loop_bct): Likewise.  Do not delete iteration count
	condition code generation insn.  Initialize iteration count before
	loop start.
	* rtl.h (loop_optimize): Update prototype.

	* ginclude/va-ppc.h (va_arg): longlong types in overflow area are
	not doubleword aligned.

	* rs6000.c (optimization_options): New function.
	(secondary_reload_class): Only call true_regnum for PSEUDO_REGs.
	* rs6000.h (OPTIMIZATION_OPTIONS): Define.
	(REG_ALLOC_ORDER): Allocate highest numbered condition regsiters
	first; cr1 can be used for FP record condition insns.

Fri Sep 18 09:44:55 1998  Nick Clifton  <nickc@cygnus.com>

	* config/m32r/m32r.h (m32r_block_immediate_operand): Add to
	PREDICATE_CODES.

	* config/m32r/m32r.md: Add "movstrsi" and "movstrsi_internal"
	patterns.

	* config/m32r/m32r.c (m32r_print_operand): Add 's' and 'p'
	operators.
	(block_move_call): New function: Call a library routine to copy a
	block of memory.
	(m32r_expand_block_move): New function: Expand a "movstrsi"
	pattern into a sequence of insns.
	(m32r_output_block_move): New function: Expand a
	"movstrsi_internal" pattern into a sequence of assembler opcodes.
	(m32r_block_immediate_operand): New function: Return true if the
	RTL is an integer constant, less than or equal to MAX_MOVE_BYTES.
	
Thu Sep 17 16:42:16 EDT 1998  Andrew MacLeod  <amacleod@cygnus.com>

	* except.c (start_catch_handler): Issue 'fatal' instead of 'error' and
	re-align some code.
	* libgcc2.c (__eh_rtime_match): fprintf a runtime error. Use <stdio.h>.

Thu Sep 17 12:24:33 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* regmove.c (copy_src_to_dest): Check that modes match.

Wed Sep 16 22:10:42 1998  Robert Lipe  <robertl@dgii.com>

	* config/i386/sco5.h (SUPPORTS_WEAK): True only if targeting ELF.

Wed Sep 16 15:24:54 1998  Richard Henderson  <rth@cygnus.com>

	* i386.h (PREFERRED_RELOAD_CLASS): Respect an existing class
	narrower than FLOAT_REGS.

Wed Sep 16 17:51:00 1998  Alexandre Oliva  <oliva@dcc.unicamp.br>

	* cpplib.c: removed OLD_GPLUSPLUS_INCLUDE_DIR
	* cccp.c: ditto
	* Makefile.in (old_gxx_include_dir): removed

Wed Sep 16 12:29:22 1998  Nick Clifton  <nickc@cygnus.com>

	* config/sh/sh.h: Update definition of HANDLE_PRAGMA to match
	new specification.

	* config/sh/sh.c (handle_pragma): Rename to sh_handle_pragma().
	(sh_handle_pragma): Change function arguments to match new
	specification for HANDLE_PRAGMA. 

Wed Sep 16 12:43:19 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* gen-protos.c (parse_fn_proto): Cast argument of ISALNUM to
	`unsigned char'.
	(main): Mark parameter `argc' with ATTRIBUTE_UNUSED.
	When generating output, initialize missing struct member to zero.

Wed Sep 16 14:47:43 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* regmove.c (copy_src_to_dest): Don't copy if that requires
	(a) new register(s).

Wed Sep 16 01:29:12 1998  Bernd Schmidt <crux@pool.informatik.rwth-aachen.de>

	* global.c (reg_allocno): Now static.
	* reload1.c (reg_allocno): Delete declaration.
	(order_regs_for_reload): Take no arguments.  Don't treat regs
	allocated by global differently than those allocated by local-alloc.

Wed Sep 16 01:09:01 1998  Kamil Iskra  <iskra@student.uci.agh.edu.pl>

	* m68k/m68k.c (output_function_prologue): Reverse NO_ADDSUB_Q
	condition, fix format strings.
	(output_function_epilogue): Likewise.

	* m68k/m68k.c: Don't include <stdlib.h> directly.

Wed Sep 16 00:30:56 1998  Geoff Keating  <geoffk@ozemail.com.au>

	* gcse.c: New definition NEVER_SET for reg_first_set, reg_last_set,
	mem_first_set, mem_last_set; because 0 can be a CUID.
	(oprs_unchanged_p): Use new definition.
	(record_last_reg_set_info): Likewise.
	(record_last_mem_set_info): Likewise.
	(compute_hash_table): Likewise.

Tue Sep 15 22:59:52 1998  Jeffrey A Law  (law@cygnus.com)

	* rs6000.c (output_epilogue): Handle Chill.

	* mn10200.h (ASM_OUTPUT_DWARF2_ADDR_CONST): Define.
	* mn10300.h (ASM_OUTPUT_DWARF2_ADDR_CONST): Define.

	* combine.c (make_extraction): If no mode is specified for
	an operand of insv, extv, or extzv, default it to word_mode.
	(simplify_comparison): Similarly.
	* expmed.c (store_bit_field): Similarly.
	(extract_bit_field): Similarly.
	* function.c (fixup_var_regs_1): Similarly.
	* recog.c (validate_replace_rtx_1): Similarly.
	* mips.md (extv, extzv, insv expanders): Default modes for most
	operands.  Handle TARGET_64BIT.
	(movdi_uld, movdi_usd): New patterns.

	* pa.c (emit_move_sequence): Do not replace a pseudo with its
	equivalent memory location unless we have been provided a scratch
	register.  Similarly do not call find_replacement unless a
	scratch register has been provided.

Tue Sep 15 19:23:01 1998  Bernd Schmidt <crux@pool.informatik.rwth-aachen.de>

        * i386.h (PREFERRED_RELOAD_CLASS): For standard 387 constants,
        return FLOAT_REGS.

Tue Sep 15 19:09:06 1998  Richard Henderson  <rth@cygnus.com>

	* tree.h (BUILT_IN_CALLER_RETURN_ADDRESS): Unused.  Kill.
	(BUILT_IN_FP, BUILT_IN_SP, BUILT_IN_SET_RETURN_ADDR_REG): Kill.
	(BUILT_IN_EH_STUB_OLD, BUILT_IN_EH_STUB, BUILT_IN_SET_EH_REGS): Kill.
	(BUILT_IN_EH_RETURN, BUILT_IN_DWARF_CFA): New.
	* c-decl.c (init_decl_processing): Update accordingly.
	* expr.c (expand_builtin): Likewise.

	* rtl.h (global_rtl): Add cfa entry.
	(virtual_cfa_rtx, VIRTUAL_CFA_REGNUM): New.
	(LAST_VIRTUAL_REGISTER): Update.
	* emit-rtl.c (global_rtl): Add cfa entry.
	(init_emit): Initialize it.
	* function.c (cfa_offset): New.
	(instantiate_virtual_regs): Initialize it.
	(instantiate_virtual_regs_1): Instantiate virtual_cfa_rtx.
	(expand_function_end): Call expand_eh_return.
	* tm.texi (ARG_POINTER_CFA_OFFSET): New.

	* except.c (current_function_eh_stub_label): Kill.
	(current_function_eh_old_stub_label): Likwise; update all references.
	(expand_builtin_set_return_addr_reg): Kill.
	(expand_builtin_eh_stub_old, expand_builtin_eh_stub): Kill.
	(expand_builtin_set_eh_regs): Kill.
	(eh_regs): Produce a third reg for the actual handler address.
	(eh_return_context, eh_return_stack_adjust): New.
	(eh_return_handler, eh_return_stub_label): New.
	(init_eh_for_function): Initialize them.
	(expand_builtin_eh_return, expand_eh_return): New.
	* except.h: Update prototypes.
	* flow.c (find_basic_blocks_1): Update references to the stub label.
	* function.h (struct function): Kill stub label elements.

	* libgcc2.c (in_reg_window): For REG_SAVED_REG, check that the
	register number is one that would be in the previous window.
	Provide a dummy definition for non-windowed targets.
	(get_reg_addr): New function.
	(get_reg, put_reg, copy_reg): Use it.
	(__throw): Rely on in_reg_window, not INCOMING_REGNO.  Kill stub
	generating code and use __builtin_eh_return.  Use __builtin_dwarf_cfa.

	* alpha.c (alpha_eh_epilogue_sp_ofs): New.
	(alpha_init_expanders): Initialize it.
	(alpha_expand_epilogue): Use it.
	* alpha.h: Declare it.
	* alpha.md (eh_epilogue): New.

	* m68h.h (ARG_POINTER_CFA_OFFSET): New.
	* sparc.h (ARG_POINTER_CFA_OFFSET): New.

Tue Sep 15 19:31:58 1998  Michael Meissner  <meissner@cygnus.com>

	* i960.h (CONST_COSTS): Fix thinko.  Test flag, not the constant
	flag bit mask.

Tue Sep 15 14:10:54 EDT 1998  Andrew MacLeod  <amacleod@cygnus.com>

	* except.h (struct eh_entry): Add false_label field.
	(end_catch_handler): Add prototype.
	* except.c (push_eh_entry): Set false_label field to NULL_RTX.
	(start_catch_handler): When using old style exceptions, issue
	runtime typematch code before continuing with the handler.
	(end_catch_handler): New function, generates label after handler
	if needed by older style exceptions.
	(expand_start_all_catch): No need to check for new style exceptions.
	(output_exception_table_entry): Only output the first handler label
	for old style exceptions.
	* libgcc2.c (__eh_rtime_match): New routine to lump runtime matching
	mechanism into one function, if a runtime matcher is provided.

Tue Sep 15 13:53:59 EDT 1998  Andrew MacLeod  <amacleod@cygnus.com>

	* config/i960/i960.h (SLOW_BYTE_ACCESS): Change definition to 1.

Tue Sep 15 09:59:01 1998  Mark Mitchell  <mark@markmitchell.com>

	* integrate.c (copy_decl_list): Fix typo.

Tue Sep 15 04:18:52 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* config/sparc/sparc.md (movdf_const_intreg_sp32): Fix length
	attribute.

Mon Sep 14 14:02:53 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Sep 14 10:33:56 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Sep 14 09:51:05 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Sun Sep 13 22:10:18 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* invoke.texi (C Dialect Options): Put back missing @end itemize.

Mon Sep 14 02:33:46 1998  Alexandre Oliva  <oliva@dcc.unicamp.br>

	* configure.in: remove usage of `!' to negate the result of a
	command; some common shells do not support it

Sun Sep 13 19:17:35 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* configure.in: in sparc9-sol2 config, use 'if test' not
	brackets.
	* configure: Rebuilt.

	* config/sparc/sol2-sld-64.h (SPARC_DEFAULT_CMODEL): Change to
	CM_MEDANY.
	(CPP_CPU_SPEC): Do not define _LP64, header files do this.
	(CPP_CPU_DEFAULT_SPEC): Likewise.
	* config/sparc/sol2.h (INIT_SUBTARGET_OPTABS): Get the names right
	for arch64 libfuncs.
	
	* config/sparc/sparc.md (goto_handler_and_restore): Allow any mode
	for operand zero.

Sun Sep 13 09:11:59 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* acconfig.h (NEED_DECLARATION_STRSIGNAL): Provide a stub.

	* collect2.c: Don't declare `sys_siglist' here.
	(my_strsignal): Prototype and define new function.  Use it in
	place of `sys_siglist' hacks.

	* mips_tfile.c:  Likewise.

	* configure.in (AC_CHECK_FUNCS): Check for strsignal.
	(GCC_NEED_DECLARATIONS): Likewise.

	* system.h (strsignal): Prototype it, if necessary.
	(sys_siglist): Declare it, if necessary.

Sun Sep 13 04:37:28 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* loop.c (move_movables): While removing insn sequences, preserve
	the next pointer of the most recently deleted insn when we skip
	over a NOTE.

Sun Sep 13 08:13:39 1998  Ben Elliston  <bje@cygnus.com>

	* objc/config-lang.in: Do not output the name of the selected
	thread file when building the front-end.  The Makefile for the
	runtime library will do this.

	* objc/Make-lang.in: Do not build the runtime library or install
	the Objective C header files.  The Makefile for the runtime
	library will do this.

	* objc/Makefile.in (all.indirect): Only build the front-end.
	(compiler): Rename to `frontend'.
	(obj-runtime): Remove target.
	(copy-headers): Likewise.
	(clean): No need to remove `libobjc.a' any longer.

Sat Sep 12 11:37:19 1998  Michael Meissner  <meissner@cygnus.com>

	* rs6000.h ({ASM,CPP}_CPU_SPEC): Add support for all machines
	supported with -mcpu=xxx.

Fri Sep 11 23:55:54 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* flow.c (mark_set_1): Recognize multi-register structure return
	values in CALL insns.
	(mark_used_regs): Likewise.
	(count_reg_sets_1): Likewise.
	(count_reg_references):	Likewise.
	* rtlanal.c (note_stores): Likewise.
	(reg_overlap_mentioned_p): Likewise.
	* haifa-sched.c (check_live_1): Likewise.
	(update_live_1): Likewise.
	(sched_analyze_1): Likewise.
	(sched_note_set): Likewise.
	(birthing_insn_p): Likewise.
	(attach_deaths): Likewise.

	* config/sparc/sparc.md (movdf_const_intreg_sp64): Disable.


Fri Sep 11 22:57:55 1998  Eric Dumazet  <dumazet@cosmosbay.com>

	* config/i386/sco5.h (ASM_WEAKEN_LABEL): Defined as in svr4.h.

Thu Sep 10 22:02:04 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* glimits.h (__LONG_MAX__): Recognize __sparcv9 too.

Thu Sep 10 21:19:10 1998  Jakub Jelinek  <jj@sunsite.ms.mff.cuni.cz>

	* configure.in: Add check for GAS subsection -1 support.
	* acconfig.h (HAVE_GAS_SUBSECTION_ORDERING): Add.
	* configure config.in: Rebuilt.
	* config/sparc/sparc.h (CASE_VECTOR_MODE): For V9 flag_pic, use
	SImode is subsection -1 works, else use DImode.
	(ASM_OUTPUT_ADDR_VEC_START, ASM_OUTPUT_ADDR_VEC_END): Define if
	subsection -1 works.
	* config/sparc/sparc.c (sparc_output_addr_vec,
	sparc_output_addr_diff_vec): Use them if defined.

Thu Sep 10 10:46:01 1998  Mark Mitchell  <mark@markmitchell.com>

	* tree.h (DECL_ORIGIN): New macro.
	* integrate.c (copy_and_set_decl_abstract_origin): New function.
	(copy_decl_list): Use it.
	(integrate_parm_decls): Likewise.
	(integrate_decl_tree): Likewise.
	* dwarf2out.c (decl_ultimate_origin): Simplify.
	* dwarfout.c (decl_ultimate_origin): Likewise.
	* c-decl.c (duplicate_decls): Use DECL_ORIGIN.
	(pushdecl): Likewise.

Thu Sep 10 08:01:31 1998  Anthony Green  <green@cygnus.com>

	* config/rs6000/rs6000.c (output_epilog): Add Java support.