flow.c (find_basic_blocks): Calc upper bound for extra nops in max_uids_for_flow.

[gcc.git] / gcc / ChangeLog

Thu Oct  8 01:25:22 1998  Richard Henderson  <rth@cygnus.com>

	* flow.c (find_basic_blocks): Calc upper bound for extra nops in
	max_uids_for_flow.
	(find_basic_blocks_1): Add a nop to the end of a basic block when
	a trailing call insn does not have abnormal control flow.
	* gcse.c (pre_transpout): New variable.
	(alloc_pre_mem, free_pre_mem, dump_pre_data): Bookkeeping for it.
	(compute_pre_transpout): Calculate it.
	(compute_pre_ppinout): Use it to eliminate impossible placements
	due to abnormal control flow through calls.
	(compute_pre_data): Call compute_pre_transpout.

Wed Oct  7 21:40:24 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* config/sparc/sol2-sld-64.h (ASM_CPU_SPEC): Fix typo.

Wed Oct  7 21:19:46 1998  Ken Raeburn  <raeburn@cygnus.com>

	* config/mips/mips.md (tablejump_internal3, tablejump_internal4
	and matching define_insns): Tack on a `use' of the table label, so
	flow analysis will recognize a tablejump.

Wed Oct  7 17:33:39 1998  Richard Henderson  <rth@cygnus.com>

	* gcse.c (pre_insert_insn): Tweek to notice that calls do not
	always end basic blocks for abnormal edge reasons.

Wed Oct  7 14:40:43 1998  Nick Clifton  <nickc@cygnus.com>

	* config/i386/i386.h: Remove definition of
	HANDLE_PRAGMA_PACK_PUSH_POP.
	
	* config/i386/go32.h: Add definition of
	HANDLE_PRAGMA_PACK_PUSH_POP.
	
	* config/i386/win32.h: Add definition of
	HANDLE_PRAGMA_PACK_PUSH_POP.
	
	* config/i386/cygwin32.h: Add definition of
	HANDLE_PRAGMA_PACK_PUSH_POP.

	* c-pragma.c (insert_pack_attributes): Do not insert
	attributes unless #pragma pack(push,<n>) is in effect.

Wed Oct  7 12:10:46 1998  Jim Wilson  <wilson@cygnus.com>

	* expr.c (emit_group_store): Handle a PARALLEL destination.

Wed Oct  7 10:07:29 1998  Richard Henderson  <rth@cygnus.com>

	* gcse.c (pre_insert_insn): When a call ends a bb, insert
	the new insns before the argument regs are loaded.

Wed Oct  7 12:55:26 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* Makefile.in (c-gperf.h): Add -L KR-C -F ', 0, 0' flags to gperf.
	(c-parse.gperf): Update comments describing invocation flags.
	(c-gperf.h): Regenerate using gperf 2.7.1 (19981006 egcs).

1998-10-07  Manfred Hollstein  <manfred@s-direktnet.de>

	* reload1.c (reload): Call free before clobbering the memory
	locations or constants pointers.

Wed Oct  7 02:05:20 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* config/sparc/sol2-sld-64.h (TRANSFER_FROM_TRAMPOLINE): Rework
	for efficiency by checking whether we need to modify the current
	stack permission at all.
	(ASM_OUTPUT_CONSTRUCTOR, ASM_OUTPUT_DESTRUCTOR): Define.
	* config/sparc/sparc.c (sparc_initialize_trampoline): Emit
	__enable_execute_stack libcall here too if
	TRANSFER_FROM_TRAMPOLINE is defined.
	* config/sparc/sparc.h: Set TARGET_ARCH32 to a constant if
	IN_LIBGCC2.

Wed Oct  7 02:27:52 1998  Jeffrey A Law  (law@cygnus.com)

	* Makefile.in (DRIVER_DEFINES): Remove last change.
	
Wed Oct  7 01:08:43 1998  Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>

	* jump.c (duplicate_loop_exit_test): Strip REG_WAS_0 notes off all
	insns we're going to copy.
	* regclass.c (reg_scan_mark_refs): Don't test X for NULL_RTX.

	* loop.c (count_one_set): Add prototype.

	* caller-save.c (restore_referenced_regs): Lose mode argument.
	(insert_save): Lose mode argument.
	(insert_restore): Lose mode argument.
	(insert_one_insn): Lose mode argument.
	(save_call_clobbered_regs): Lose mode argument.
	(setup_save_areas): Take no argument and return void.  All callers
	changed.
	Don't verify validity of memory addresses.
	* reload.h (setup_save_ares): Adjust prototype.
	(save_call_clobbered_regs): Likewise.
	* reload1.c (delete_caller_save_insns): New function.
	(caller_save_spill_class): Delete variable.
	(caller_save_group_size): Delete variable.
	(reload): Call setup_save_areas and save_call_clobbered_regs
	in the main loop, before calling calculate_needs_all_insns.
	Don't call save_call_clobbered_regs after the loop.
	Call delete_caller_save_insns at the end of an iteration if
	something changed.
	Delete code to manage caller_save_spill_class.
	Emit the final note before setting reload_first_uid.
	Simplify test that determines whether reload_as_needed gets run.
	(calculate_needs): Delete code to manage caller_save_spill_class.

Tue Oct  6 15:42:27 1998  Richard Henderson  <rth@cygnus.com>

	* collect2.c (main): Initialize ld_file_name.

Tue Oct  6 15:45:15 1998  Catherine Moore  <clm@cygnus.com>
 
        * config/sparc/sysv4.h (ASM_OUTPUT_SECTION_NAME):  Don't
        check for flag_function_sections.

Tue Oct  6 20:02:31 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* cse.c (insert_regs): Fix bug in Sep 24 change.

Tue Oct  6 17:00:42 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* flags.h (flag_dump_unnumbered): Declare.
	* toplev.c (flag_dump_unnumbered): Don't declare.
	* print-rtl.c (flags.h): Include.
	(print_rtl_single): Add return value.
	* rtl.h (print_rtl_single): Update declaration.
	* flow.c (flag_dump_unnumbered): Don't declare.
	(print_rtl_with_bb): Use return value of print_rtl_single.

Tue Oct  6 01:36:00 1998  Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>

	* loop.c (count_one_set): New static function, broken out of
	count_loop_regs_set
	(count_loop_regs_set): Call it.
	* global.c (mark_reg_store): Handle clobbers here by not calling
	set_preference.
	(mark_reg_clobber): Just call mark_reg_store after ensuring SETTER
	is in fact a clobber.
	* integrate.c (process_reg_param): New function, broken out of
	expand_inline_function.
	(expand_inline_function): Call it.


	* i386.md (addsidi3_1): Delete unused variable temp.
	(addsidi3_2): Likewise.
	(clstrstrsi): Delete unused variable addr1.

	* rtl.h: Don't declare any functions also declared in recog.h.

	* Makefile.in (stupid.o): Update dependencies.
	(global.o): Likewise.

	* global.c: Include reload.h
	(reg_becomes_live): New function.
	(reg_dies): New function.
	(build_insn_chain): New function.
	(global_alloc): Call build_insn_chain before calling reload.

	* reload.h (struct needs): New structure definition.
	(struct insn_chain): Likewise.
	(reload_insn_chain): Declare variable.
	(new_insn_chain): Declare function.


	* reload1.c (reload_startobj): New variable.
	(reload_insn_chain): New variable.
	(unused_insn_chains): New variable.
	(new_insn_chain): New function.
	(init_reload): Initialize reload_startobj, not reload_firstobj.
	(reload): Initialize reload_firstobj.
	Before returning, free everything on the reload_obstack.

	* stupid.c: Include insn-config.h, reload.h and basic-block.h.
	(reg_where_dead_chain, reg_where_born_exact, reg_where_born_clobber,
	current_chain): New variables.
	(reg_where_born): Delete variable.
	(REG_WHERE_BORN): New macro.
	(find_clobbered_regs): New function.
	(stupid_life_analysis): Don't allocate/free reg_where_born.
	Allocate and free reg_where_born_exact, reg_where_born_clobber,
	reg_where_dead_chain.
	Use REG_WHERE_BORN instead of reg_where_born.
	While processing the insns, build the reload_insn_chain with
	information about register lifetimes.
	(stupid_reg_compare): Use REG_WHERE_BORN instead of reg_where_born.
	(stupid_mark_refs): Replace arg INSN with arg CHAIN.  All callers
	changed.
	Compute and information about birth and death of pseudo registers in
	reg_where_dead_chain, reg_where_born_exact and reg_where_born_clobber.
	Delete code to set elements of reg_where_born.	

Mon Oct  5 22:34:30 1998  Alexandre Petit-Bianco  <apbianco@cygnus.com>

	* tree.def (GOTO_EXPR): Modified documentation.
	* expr.c (expand_expr): Expand GOTO_EXPR into a goto or a computed
 	goto.

Mon Oct  5 22:43:36 1998  David Edelsohn  <edelsohn@mhpcc.edu>

	* unroll.c (loop_iteration_var, loop_initial_value, loop_increment
	loop_final_value, loop_comparison_code): No longer static.
	(unroll_loop): Delete loop_start_value update.
	* loop.h (loop_iteration_var, loop_initial_value, loop_increment,
	loop_final_value, loop_comparison_code): Extern.
	(loop_start_value): Delete extern.
	* loop.c (loop_can_insert_bct, loop_increment, loop_start_value,
	loop_comparison_value, loop_comparison_code): Delete.
	(loop_optimize): Remove initialization for deleted variables.
	(strength_reduce): Delete analyze_loop_iterations call.  Only call
	insert_bct if flag_branch_count_on_reg set.
	(analyze_loop_iterations): Delete.
	(insert_bct): Remove iteration count calculation.  Move checks for
	viable BCT optimization to here.  Obtain iteration count from
	loop_iterations and correct for unrolling.  Check for enough
	iteration to be beneficial.  Comment out runtime iteration count
	case.
	(insert_bct): Print iteration count in dump file.  Remove
	loop_var_mode and use word_mode directly.

	* rs6000.h (processor_type): Add PROCESSOR_PPC604e.
	* rs6000.c (rs6000_override_options): Use it.
	(optimization_options): Enable use of flag_branch_on_count_reg.
	* rs6000.md (define_function_unit): Describe 604e.

1998-10-05 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>

	* loop.c (move_movables): Corrected threshold calculation for
	moved_once registers.

Mon Oct  5 21:18:45 1998  Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>

	* loop.c (combine_givs_p): Fix test for identical givs.

Mon Oct  5 10:11:28 1998  Nick Clifton  <nickc@cygnus.com>

	* dwarf2out.c (gen_subprogram_die): If errorcount nonzero, don't
	call abort if the function is already defined.

Mon Oct  5 10:02:36 1998  Jeffrey A Law  (law@cygnus.com)

	* combine.c (simplify_rtx): Do not replace TRUNCATE with a SUBREG if
	truncation is not a no-op.

Mon Oct 5 09:02:04 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Oct 5 08:19:55 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Oct  5 01:07:23 1998  Torbjorn Granlund  <tege@matematik.su.se>

	* expmed.c (expand_divmod): Don't widen for computing remainder
	if we seem to have a divmod pattern for needed mode.

Mon Oct  5 01:01:42 1998  Zack Weinberg  <zack@rabi.phys.columbia.edu>  

	* cpplib.c (macroexpand): Correct off-by-one error in handling
	of escapes.

Sun Oct  4 23:58:30 1998  Richard Henderson  <rth@cygnus.com>

	* combine.c (expand_field_assignment): Don't do bitwise operations
	on MODE_FLOAT; pun to MODE_INT if possible.

Sun Oct  4 18:33:24 1998  Jason Merrill  <jason@yorick.cygnus.com>
			  scott snyder  <snyder@d0sgif.fnal.gov>

	* tlink.c (scan_linker_output): Recognize errors from irix 6.2
	linker.  Recognize mangled names in quotes.

Sun Oct  4 02:58:20 1998  Jakub Jelinek  <jj@sunsite.ms.mff.cuni.cz>

        * config/sparc/sparc.md (ashldi3+1): Name it ashldi3_sp64.
	(ashlsi3_const1, ashldi3_const1): New combiner patterns.
	(ashrsi3_extend, ashrsi3_extend2): New combiner patterns.
	(lshrsi3_extend, lshrsi3_extend2): Ditto.

Sun Oct  4 00:23:00 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* function.c (purge_addressof_1): If trying to take a sub-word
	integral piece of a floating point mode, put it on the stack.

Sat Oct  3 19:01:03 1998  Richard Henderson  <rth@cygnus.com>

	* alpha/linux.h (CPP_PREDEFINES): Define __alpha__ for imake.

Sat Oct  3 14:42:19 1998  Jason Merrill  <jason@yorick.cygnus.com>

	* PROJECTS: Remove template friends.

	* collect2.c (sort_ids): Remove unused variable.

	* tm.texi (MATH_LIBRARY): Document.
	(NEED_MATH_LIBRARY): Remove.

	* varasm.c (assemble_start_function, assemble_variable, weak_finish,
	assemble_alias): Do ASM_GLOBALIZE_LABEL for weak symbols, too.

Sat Oct  3 16:14:44 1998  John Carr  <jfc@mit.edu>

	* dwarf2out.c (expand_builtin_dwarf_reg_size):  Initialize
	last_end to 0x7fffffff.

Fri Oct  2 19:14:20 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* function.c (purge_addressof_1): Do not perform endianness
	corrections on bitpos, who we call will do it for us.

Fri Oct  2 11:52:35 1998  Jeffrey A Law  (law@cygnus.com)

	* h8300.c (WORD_REG_USED): Fix typo.
	(initial_offset): Use WORD_REG_USED.

	* h8300.c (handle_pragma): Fix typo.

Fri Oct  2 10:51:35 1998  Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>

	* caller-save.c (insert_save_restore): Break this function up
	into new functions insert_restore, insert_save and insert_one_insn.
	All callers changed.
	(insert_restore): New function, mostly broken out of
	insert_save_restore.
	(insert_save): Likewise.
	(insert_one_insn): Likewise.
	(restore_referenced_regs): New argument BLOCK.  All callers changed.
	(save_call_clobbered_regs): Don't keep track of basic block boundaries
	in this function, do it in insert_one_insn instead.

	* reload1.c (reload): Break out some more pieces into separate
	functions.
	(dump_needs): New function, broken out of reload.
	(set_initial_elim_offsets): Likewise.
	(init_elim_table): Likewise.
	(update_eliminables): Likewise.

	* global.c (global_alloc): Delete code to manage the scratch_list.
	* local-alloc.c (qty_scratch_rtx): Delete.
	(scratch_block): Delete.
	(scratch_list): Delete.
	(scratch_list_length): Delete.
	(scratch_index): Delete.
	(alloc_qty_for_scratch): Delete.
	(local-alloc): Update initialization of max_qty.
	Delete code to manage the scratch list.
	Delete code to allocate/initialize qty_scratch_rtx.
	(block_alloc): Don't allocate quantities for scratches.
	Delete code to manage the scratch list.
	* regs.h (scratch_list): Delete declaration.
	(scratch_block): Delete declaration.
	(scratch_list_length): Delete declaration.
	* reload1.c (reload): Delete code to manage the scratch list.
	(spill_hard_reg): Likewise.
	(mark_scratch_live): Delete.

	* recog.c (alter_subreg): Delete declaration.

1998-10-02  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* Makefile.in (cccp.o): Fix typo in last patch.

Fri Oct  2 16:13:12 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* t-sh (LIB1ASMFUNCS): Add _set_fpscr .
	* config/sh/lib1funcs.asm (___set_fpscr): Add.

Fri Oct  2 02:01:59 1998  Jeffrey A Law  (law@cygnus.com)

	* regclass.c (reg_scan_mark_refs): Return immediately if passed a
	NULL_RTX as an argument.

	* Makefile.in (unlibsubdir): Define.
	(DRIVER_DEFINES): Use unlibsubdir.
	(cccp.o, cpplib.o, protoize.o, unprotoize.o): Similarly.
	(stmp-fixinc): Similarly.

Thu Oct  1 19:58:30 1998  Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>

	* regmove.c (regmove_optimize): Add variable old_max_uid.
	At the end of the function, update basic_block_end.

Thu Oct  1 17:58:25 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* dwarf2out.c (expand_builtin_dwarf_reg_size): Use
	FIRST_PSEUDO_REGISTER as upper bound for last_end, not an
	arbitrary constant.

Thu Oct  1 17:57:14 1998  Nick Clifton  <nickc@cygnus.com>

	* config/arm/arm.c: Improve interworking support.

Thu Oct  1 18:43:35 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* reload1.c (choose_reload_regs): Fix test if reload_reg_rtx[r] was
	copied from reload_out[r] .

Thu Oct  1 19:20:09 1998  John Carr  <jfc@mit.edu>

	* dwarf2out.c (expand_builtin_dwarf_reg_size): Fix to work
	with more than three size ranges.

	* flow.c (sbitmap_copy): Use bcopy to copy bitmap.

	* rtl.c (mode_name): Add a null string at the end of the array.
	(mode_wider_mode): Change type to unsigned char.
	(mode_mask_array): New variable.
 	(init_rtl): Update for mode_wider_mode type change.

	* rtl.h (mode_wider_mode): Change type to unsigned char.
	(mode_mask_array): Declare.
	(GET_MODE_MASK): Use mode_mask_array.

Thu Oct  1 15:56:01 1998  Gavin Romig-Koch  <gavin@cygnus.com>

	* calls.c (expand_call) : Encapsulate code into 
	copy_blkmode_from_reg.
	* expr.c (copy_blkmode_from_reg): New function.
	* expr.h (copy_blkmode_from_reg): New function.
	* integrate.c (function_cannot_inline_p): We can inline
	these now.
	(expand_inline_function): Use copy_blkmode_from_reg
	if needed.  Avoid creating BLKmode REGs.
	(copy_rtx_and_substitute): Don't try to SUBREG a BLKmode
	object.

Thu Oct  1 10:42:27 1998  Nick Clifton  <nickc@cygnus.com>

	* config/v850/v850.c: Add function prototypes.
	Add support for v850 special data areas.

	* config/v850/v850.h: Add support for v850 special data areas.
	
	* c-pragma.c: Add support for HANDLE_PRAGMA_PACK and
	HANDLE_PRAGMA_PACK_PUSH_POP.
	(push_alignment): New function: Cache an alignment requested
	by a #pragma pack(push,<n>).
	(pop_alignment): New function: Pop an alignment from the
	alignment stack.
	(insert_pack_attributes): New function: Generate __packed__
	and __aligned__ attributes for new decls whilst a #pragma pack
	is in effect. 
	(add_weak): New function: Cache a #pragma weak directive.
	(handle_pragma_token): Document calling conventions.  Add
	support for #pragma pack(push,<n>) and #pragma pack (pop).

	* c-pragma.h: If HANDLE_SYSV_PRAGMA or HANDLE_PRAGMA_PACK_PUSH_POP
	are defined enable HANDLE_PRAGMA_PACK.
	Move 'struct weak_syms' here (from varasm.c).
	Add pragma states for push and pop pragmas.

	* c-common.c (decl_attributes): Call PRAGMA_INSERT_ATTRIBUTES
	if it is defined.

	* c-lex.c: Replace occurances of HANDLE_SYSV_PRAGMA with
	HANDLE_GENERIC_PRAGMAS.
	
	* varasm.c: Move definition of 'struct weak_syms' into
	c-pragma.h. 
	(handle_pragma_weak): Deleted.

	* config/i386/i386.h: Define HANDLE_PRAGMA_PACK_PUSH_POP.

	* config/winnt/win-nt.h: Define HANDLE_PRAGMA_PACK_PUSH_POP.

	* c-decl.c (start_function): Add invocation of
	SET_DEFAULT_DECL_ATTRIBUTES, if defined.

	* tm.texi: Remove description of non-existant macro
	SET_DEFAULT_SECTION_NAME.
	
	(HANDLE_SYSV_PRAGMA): Document.
	(HANDLE_PRAGMA_PACK_PUSH_POP): Document.

Wed Sep 30 22:27:53 1998  Robert Lipe  <robertl@dgii.com>

	* config.sub: Recognize i[34567]86-pc-udk as new target.
	* configure.in: Likewise.
	* config/i386/t-udk: New file.
	* config/i386/udk.h: New file.

Wed Sep 30 19:33:07 1998  Jeffrey A Law  (law@cygnus.com)

	* reorg.c (check_annul_list_true_false): Remove unused variables.
	(steal_delay_list_from_target): Add missing "used_annul" variable.
	(try_merge_delay_insns): Close out half formed comment.

Wed Sep 30 19:13:20 1998 Zack Weinberg  <zack@rabi.phys.columbia.edu>  

	* cpplib.c (macroexpand): If arg->raw_before or
	arg->raw_after, remove any no-reexpansion escape at the
	beginning of the pasted token.  Correct handling of whitespace
	markers and no-reexpand markers at the end if arg->raw_after.

	* toplev.c (documented_lang_options): Recognize -include,
	-imacros, -iwithprefix, -iwithprefixbefore.
	* cpplib.c (cpp_start_read): Process -imacros and -include
	switches at the same time and in command-line order, after
	initializing the dependency-output code.  Emit properly nested
	#line directives for them.  Emit a #line for the main file
	before processing these switches, and don't do it again
	afterward.

Wed Sep 30 18:03:22 1998  Richard Henderson  <rth@cygnus.com>

	* function.c (purge_addressof_1): Use bitfield manipulation
	routines to handle mem mode < reg mode.

Wed Sep 30 18:43:32 1998  Herman ten Brugge <Haj.Ten.Brugge@net.HCC.nl> 

	* reorg.c (try_merge_delay_insns): Account for resources referenced
	in each instruction in INSN's delay list before trying to eliminate
	useless instructions.  Similarly when looking at a trial insn's delay
	slots.

        * reorg.c (check_annul_list_true_false): New function.
        (steal_delay_list_from_{target,fallthrough}): Call it and also
        refine tests for when we may annul if already filled a slot.
        (fill_slots_from_thread): Likewise.
        (delete_from_delay_slot): Return newly-created thread.
        (try_merge_delay_isns): Use its new return value.

Wed Sep 30 18:29:26 1998  Jeffrey A Law  (law@cygnus.com)

	* loop.c (check_dbra_loop): Use a vanilla loop reversal if the biv is
	used to compute a giv or as some other non-counting use.

Wed Sep 30 18:19:27 1998  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

	* regs.h (HARD_REGNO_CALL_PART_CLOBBERED):  New macro.
	* local-alloc.c (find_free_reg): Use it.
	* global.c (find_reg): Likewise.
	* tm.texi: Document HARD_REGNO_CALL_PART_CLOBBERED.

	* regs.h (HARD_REGNO_CALLER_SAVE_MODE): New macro.
	* caller-save.c (init_caller_save): Use it.
	* tm.texi: Document HARD_REGNO_CALLER_SAVE_MODE.

Wed Sep 30 12:57:30 1998 Zack Weinberg  <zack@rabi.phys.columbia.edu>  

	* configure.in: Add --enable-cpplib option which uses cpplib
	for cpp, but doesn't link cpplib into cc1.  Make help text
	capitalization consistent.
	* configure: Rebuilt.

Wed Sep 30 10:09:39 1998  Mark Mitchell  <mark@markmitchell.com>

	* function.c (gen_mem_addressof): If the address REG is
	REG_USERVAR_P make the new REG be so also.
	* loop.c (scan_loop): Apply DeMorgan's laws and add documentation
	in an attempt to clarify slightly.

Wed Sep 30 09:57:40 1998  Jeffrey A Law  (law@cygnus.com)

	* expr.c (expand_expr): Handle COMPONENT_REF, BIT_FIELD_REF ARRAY_REF
	and INDIRECT_REF in code to check MAX_INTEGER_COMPUTATION_MODE.

Wed Sep 30 10:13:39 1998  Catherine Moore  <clm@cygnus.com>

        * toplev.c:  Fix last patch.

Tue Sep 29 20:03:18 1998  Jim Wilson  <wilson@cygnus.com>

	* loop.c (get_condition): Fix typo in May 9 change.

Tue Sep 29 11:11:38 EDT 1998  Andrew MacLeod  <amacleod@cygnus.com>

	* invoke.texi (-fexceptions): Merge 2 different descriptions.

Mon Sep 28 22:08:52 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* toplev.c (documented_lang_options): Spelling corrections.

Mon Sep 28 19:41:24 1998  Alexandre Oliva  <oliva@dcc.unicamp.br>

	* configure.in: new flags --with-ld and --with-as, equivalent
	to setting LD and AS environment variables.  Test whether
	specified arguments are GNU commands, and report them with
	checking messages.  Use the specified AS for configure
	tests too.
	* configure: ditto
	* acconfig.h: add DEFAULT_ASSEMBLER and DEFAULT_LINKER
	* config.in: ditto
	* gcc.c (find_a_file): when looking for `as' and `ld', return
	the DEFAULT program if it exists
	* collect2.c (main): use DEFAULT_LINKER if it exists

	* gcc.c (find_a_file): the test for existence of a full
	pathname was reversed

Mon Sep 28 17:34:35 1998  Michael Meissner  <meissner@cygnus.com>

	* rs6000.h (ASM_OUTPUT_MI_THUNK): Only define on ELF systems.
	* rs6000.c (output_mi_thunk): Always use a raw jump for now.

Mon Sep 28 14:24:03 1998  Mark Mitchell  <mark@markmitchell.com>

	* tree.h (TYPE_BINFO): Document.

Mon Sep 28 12:55:49 1998   Stan Cox  <scox@cygnus.com>

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

Mon Sep 28 12:51:00 1998  Catherine Moore  <clm@cygnus.com>

        * toplev.c:  fix bad patch around flag_data_sections.

Mon Sep 28 10:32:28 1998  Nick Clifton  <nickc@cygnus.com>

	* reload1.c (reload): Use reload_address_index_reg_class and 
 	reload_address_base_reg_class when setting
	caller_save_spill_class.  (Patch generated by Jim Wilson:
	wilson@cygnus.com).

Mon Sep 28 07:43:34 1998  Mark Mitchell  <mark@markmitchell.com>

	* c-common.c (c_get_alias_set): Tighten slightly for FUNCTION_TYPEs
	and ARRAY_TYPEs.  Tidy up.  Improve support for type-punning. 
	* expr.c (store_field): Add alias_set parameter.  Set the
	MEM_ALIAS_SET accordingly, if the target is a MEM.
	(expand_assignment): Use it.
	(store_constructor_field): Pass 0.
	(expand_expr): Likewise.

Mon Sep 28 07:54:03 1998  Catherine Moore  <clm@cygnus.com>
 
        * flags.h:  Add flag_data_sections.
        * toplev.c:  Add option -fdata-sections.  Add flag_data_sections.
        (compile_file):  Error if flag_data_sections not supported.
        * varasm.c (assemble_variable):  Handle flag_data_sections.
        * config/svr4.h:  Modify prefixes for UNIQUE_SECTION_NAME.
        * config/mips/elf.h:  Likewise.
        * config/mips/elf64.h:  Likewise.
        * invoke.texi:  Describe -fdata-sections.
 
Mon Sep 28 04:15:44 1998  Craig Burley  <burley@melange.gnu.org>

	* invoke.texi (-ffloat-store): Clarify that this option
	does not affect intermediate results -- only variables.

Mon Sep 28 04:11:35 1998  Jeffrey A Law  (law@cygnus.com)

	* cpp.texi: Update for Fortran usage from Craig.

Fri Sep 25 22:09:47 1998  David Edelsohn  <edelsohn@mhpcc.edu>

	* rs6000.c (function_arg_boundary): Revert accidental change on
	September 18.

Fri Sep 25 20:30:00 1998  Michael Meissner  <meissner@cygnus.com>

	* rs6000.h (ASM_OUTPUT_MI_THUNK): Declare, call output_mi_thunk.
	(output_mi_thunk): Declare.

	* rs6000.c (output_mi_thunk): Function to create thunks for MI.
	(output_function_profiler): Use r12 for temp, instead of r11 so
	that we preserve the static chain register.
	
Fri Sep 25 14:18:33 1998  Jim Wilson  <wilson@cygnus.com>

	* sdbout.c (sdbout_one_type): Don't look at TYPE_BINFO field of enums.

Fri Sep 25 19:30:19 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* sh.c (gen_shl_sext): Fix case 5.

Fri Sep 25 17:35:23 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* reload1.c (reload_combine): Re-add line that got accidentally lost.

Fri Sep 25 10:43:47 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* cccp.c (pedwarn_with_file_and_line): For !__STDC__ case, avoid
 	accessing variables until they are initialized via va_arg().

Thu Sep 24 22:12:16 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* reload1.c (reload_combine): Initialize set before using.

Thu Sep 24 18:53:20 1998  Jason Merrill  <jason@yorick.cygnus.com>

	* sdbout.c (sdbout_field_types): Don't emit the types of fields we
	won't be emitting.

Thu Sep 24 17:05:30 1998  Nick Clifton  <nickc@cygnus.com>

	* config/arm/arm.md (insv): Add comment.  In CONST_INT case, and
	operand3 with mask before using it.  Patch provided by Jim Wilson.

Thu Sep 24 15:08:08 1998  Jakub Jelinek  <jj@sunsite.ms.mff.cuni.cz>

	* config/sparc/sparc.c (function_value): Perform the equivalent of
	PROMOTE_MODE for ARCH64.
	(eligible_for_epilogue_delay): Allow DImode operations in delay
	slot of a return for ARCH64.

Thu Sep 24 22:17:54 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* sh.md (sqrtsf2): Fix mode of sqrt.

Thu Sep 24 21:48:51 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* reload1.c (choose_reload_regs): Also try inheritance when
	reload_in is a stack slot of a pseudo, even if we already got a
	reload reg.

Thu Sep 24 21:22:39 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* reload1.c (reload_cse_regs_1): Renamed from reload_cse_regs.
	(reload_cse_regs): New function body: call reload_cse_regs_1,
	reload_combine, reload_cse_move2add.
	When doing expensive_optimizations, call reload_cse_regs_1 a
	second time after reload_cse_move2add.
	(reload_combine, reload_combine_note_store): New functions.
	(reload_combine_note_use): New function.
	(reload_cse_move2add, move2add_note_store): New functions.

Thu Sep 24 18:48:43 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* reload.c (find_reloads): In code to promote RELOAD_FOR_X_ADDR_ADDR
	reloads to RELOAD_FOR_X_ADDRESS reloads, test for reload sharing.

	Properly keep track of first RELOAD_FOR_X_ADDRESS also for
	more than 3 such reloads.

	If there is not more than one RELOAD_FOR_X_ADDRESS, don't change
	RELOAD_FOR_X_ADDR_ADDR reload.

Thu Sep 24 17:45:55 1998  J"orn Rennecke <amylaar@cygnus.co.uk>

	* expr.c (store_constructor): When initializing a field that is smaller
	than a word, at the start of a word, try to widen it to a full word.

	* cse.c (cse_insn): When we are about to change a register,
	remove any invalid references to it.

	(remove_invalid_subreg_refs): New function.
	(mention_regs): Special treatment for SUBREGs.
	(insert_regs): Don't strip SUBREG for call to mention_regs.
	Check if reg_tick needs to be bumped up before that call.
	(lookup_as_function): Try to match known word_mode constants when
	looking for a norrower constant.
	(canon_hash): Special treatment for SUBREGs.

Thu Sep 24 01:35:34 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>

	* config/sparc/sol2-sld-64.h (TRANSFER_FROM_TRAMPOLINE): Define.
	* config/sparc/sparc.c (sparc64_initialize_trampoline): If that is
	defined, emit libcall to __enable_execute_stack.  Also fix opcodes
	and offsets in actual stack trampoline code so they match the
	commentary and actually work.

Thu Sep 24 01:19:02 1998  Jakub Jelinek  <jj@sunsite.ms.mff.cuni.cz>

	* configure.in (sparcv9-*-solaris): Use t-sol2 and t-sol2-64 for
	tmake_file.
	(sparc64-*-linux): Use t-linux and sparc/t-linux64 for
	tmake_file.  Set extra_parts to needed crt objects.
	* configure: Rebuilt.
	* config/sparc/linux64.h (SPARC_BI_ARCH): Define.
	(TARGET_DEFAULT): Set if default is v9 or ultra.
	(STARTFILE_SPEC32, STARTFILE_SPEC64): New macros.
	(STARTFILE_SPEC): Set to those upon SPARC_BI_ARCH.
	(ENDFILE_SPEC32, ENDFILE_SPEC64, ENDFILE_SPEC): Likewise.
	(SUBTARGET_EXTRA_SPECS, LINK_ARCH32_SPEC, LINK_ARCH64_SPEC,
	LINK_SPEC, LINK_ARCH_SPEC): Likewise.
	(TARGET_VERSION): Define.
	(MULTILIB_DEFAULT): Define.
	* config/sparc/sparc.h (CPP_CPU_DEFAULT_SPEC): Rearrange so that
	mixed 32/64 bit compilers based upon SPARC_BI_ARCH work.
	(CPP_CPU64_DEFAULT_SPEC, CPP_CPU32_DEFAULT_SEC): Define
	appropriately.
	(TARGET_SWITCHES): Allow ptr32/ptr64 options once more.
	* config/sparc/sparc.c (sparc_override_options): If arch and
	pointer size disagree, emit diagnostic and fix it up.  If
	SPARC_BI_ARCH and TARGET_ARCH32, set cmodel to CM_32.  Turn off
	V8PLUS in 64-bit mode.
	* config/sparc/t-linux64: New file.
	* config/sparc/t-sol2-64: New file.
	* config/sparc/t-sol2: Adjust build rules to use MULTILIB_CFLAGS.
	* config/sparc/sol2-sld-64.h (SPARC_BI_ARCH): Define.
	(ASM_CPU32_DEFAULT_SPEC, ASM_CPU64_DEFAULT_SPEC,
	CPP_CPU32_DEFAULT_SPEC, CPP_CPU64_DEFAULT_SPEC): Define.
	(ASM_SPEC, CPP_CPU_SPEC): Set appropriately based upon those.
	(STARTFILE_SPEC32, STARTFILE_SPEC32, STARTFILE_ARCH_SPEC):
	Define.
	(STARTFILE_SPEC): Set approriately based upon those.
	(CPP_CPU_DEFAULT_SPEC, ASM_CPU_DEFAULT_SPEC): Set based upon
	disposition of DEFAULT_ARCH32_P.
	(LINK_ARCH32_SPEC, LINK_ARCH64_SPEC): Define.
	(LINK_ARCH_SPEC, LINK_ARCH_DEFAULT_SPEC): Set based upon those.
	(CC1_SPEC, MULTILIB_DEFAULTS): Set based upon DEFAULT_ARCH32_P.
	(MD_STARTFILE_PREFIX): Set correctly based upon SPARC_BI_ARCH.
	* config/sparc/xm-sysv4-64.h (HOST_BITS_PER_LONG): Only set on
	arch64/v9.
	* config/sparc/xm-sp64.h (HOST_BITS_PER_LONG): Likewise.
	
Wed Sep 23 22:32:31 1998  Mark Mitchell  <mark@markmitchell.com>

	* rtl.h (init_virtual_regs): New function.
	* emit-rtl.c (init_virtual_regs): Define.
	(insn_emit): Use it.
	* integrate.c (save_for_inline_copying): Likewise.

Wed Sep 23 16:22:01 1998  Nick Clifton  <nickc@cygnus.com>

	* config/arm/thumb.h: The following patches were made by Jim Wilson:
	(enum reg_class): Add NONARG_LO_REGS support.
	(REG_CLASS_NAMES, REG_CLASS_CONTENTS, REGNO_REG_CLASS,
	PREFERRED_RELOAD_CLASS, SECONDARY_RELOAD_CLASS): Likewise.
	(GO_IF_LEGITIMATE_ADDRESS): Disable REG+REG addresses before reload
	completes.  Re-enable HImode REG+OFFSET addresses.
	(LEGITIMIZE_RELOAD_ADDRESS): Define.

	* expmed.c (extract_bit_field): Add comment from Jim Wilson. 

Wed Sep 23 13:26:02 1998  Richard Henderson  <rth@cygnus.com>

	* alpha.c (get_aligned_mem): Revert Sep 20 change.
        (alpha_set_memflags, alpha_set_memflags_1): Likewise.
	(alpha_align_insns): Properly calculate initial offset wrt max_align.

Wed Sep 23 10:45:44 1998  Richard Earnshaw (rearnsha@arm.com)

	* arm.c (find_barrier): Revert change of Apr 23.  Handle table
	jumps as a single entity, taking into account the size of the
	table.

Tue Sep 22 15:13:34 1998  Alexandre Petit-Bianco  <apbianco@cygnus.com>

	* tree.def (SWITCH_EXPR): New tree node definition.

Mon Sep 21 23:40:38 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Sep 21 22:31:14 PDT 1998 Jeff Law  (law@cygnus.com)

	* version.c: Bump for snapshot.

Mon Sep 21 22:48:09 1998  Jeffrey A Law  (law@cygnus.com)

	* configure.in: Recognize i[34567]86-*-openbsd* and handle it like
	NetBSD.

Mon Sep 21 22:05:28 1998  Jeffrey A Law  (law@cygnus.com)

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

Mon Sep 21 20:19:41 1998  John Carr  <jfc@mit.edu>

	* final.c (final_scan_insn): Disable tracking CC across branches.

Mon Sep 21 17:15:26 EDT 1998  Andrew MacLeod  <amacleod@cygnus.com>

	* expr.h (eh_rtime_match_libfunc): New extern declaration.
	* optabs.c (init_optabs): Set eh_rtime_match_libfunc.
	* except.c (start_catch_handler): Use eh_rtime_match_libfunc.
	* libgcc2.c (__eh_rtime_match): Always return 0 if the matcher is
	NULL. Only include <stdio.h> if inhibit_libc is not defined.

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.