changelog

这是完整的gcc源代码

	* stmt.c (expand_end_case):
	When filling labelvec from case range, avoid overflow in i.

Fri Aug 16 18:09:44 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* Makefile (install): Create bindir.  Install gcc as $(bindir)/gcc.

Sat Aug 10 15:18:02 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* ns32k.md (call_value): Consistently realize function is operand 1.

Thu Aug  8 13:36:25 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* toplev.c (main): Accept -g with warning if not supported.

	* tm-m68k.h (LEGITIMIZE_ADDRESS): Copy address before changing it.
	(COPY_ONCE): New macro, subroutine for LEGITIMIZE_ADDRESS.

	* tm-i386.h (FIX_FRAME_POINTER_ADDRESS): Remove spurious backslash.

Sun Aug  4 15:39:24 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* Kludge to preallocate stack space for stack args on Sparc.
	* expr.c (expand_call): Support STACK_SPACE_FOR_CALLS.
	(init_pending_stack_adjust): Likewise.
	* stmt.c (frame_offset): No longer static.
	* tm-sparc.h (STACK_SPACE_FOR_CALLS): Defined.
	(STACK_ARGS_ADJUST): Defined.

Thu Aug  1 17:22:40 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* tm-i860.h (MAX_PARM_BOUNDARY): Defined.
	(GO_IF_LEGITIMATE_ADDRESS): Add parens around & operator.
	(ASM_OUTPUT_REG_PUSH, ASM_OUTPUT_REG_POP): Use sp, not r3 (that's fp).
	* i860.md (movsf): Don't reload high address part if already loaded.
	(cmplesf, cmpledf, cmpgesf, cmpgedf): Set CC_NEGATED; swap operands.
	* out-i860.c (strict_single_insn_op_p):
	Fix criterion for loading high half.
	(output_load_address): #if 0 since not used.

Wed Jul 31 12:36:37 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* fixincludes: New variable INCLUDES specifies input dir.

Tue Jul 30 17:24:52 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* stmt.c (expand_end_stmt_expr): Force out the queue.
	Protect the value from the queue.

	* stddef.h (WCHAR_T): Also test and define _WCHAR_T_.

	* expr.c (move_block_to_reg): Check for QUEUED only within MEM.

Sun Jul 28 16:15:39 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* move-if-change: Use -f with rm and mv.

Sat Jul 27 13:03:50 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* fixincludes (memvar.h): Make two defs of CAT, one ANSI and one trad.

	* combine.c (try_combine): Reject if I1DEST used between I2 and I3.

Wed Jul 24 13:54:41 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* cse.c (cse_insn): Don't use HASHREG.
	Detect all volatile destinations.
	(HASHREG): Deleted.

	* tm-m68k.h (NOTICE_UPDATE_CC):
	Calls clear status even if value in address reg.

Fri Jul 19 15:50:46 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* varasm.c (make_decl_rtl): Set EXTERNAL_SYMBOL_P only if TREE_PUBLIC.

Tue Jul 16 20:16:16 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* Makefile [comments for SCO] (CC, OLDCC): Add some -D options.

Wed Jul 10 13:18:03 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* cccp.c (hack_vms_include_specification): Fix typos.

Tue Jul  9 21:17:43 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* fold-const.c (mul_double): Add parens to avoid precedence errors.

Mon Jul  8 22:17:20 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* c-parse.y (yylex): Pedantic warning here for `asm'.
	No warning for `__asm__'.
	(maybe_type_qual, maybeasm, extdef): No warning here.

Sun Jul  7 15:29:42 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* README-ENCAP: New file.  (Actually, it used to exist, and went away.)

	* emit-rtl.c (gen_highpart): Handle a const_int.

	* integrate.c (copy_rtx_and_substitute): Avoid change_address.

	* stmt.c (expand_end_stmt_expr): Instead of 0, use const0_rtx.

	* c-decl.c (NULL): Undef before defining.

	* tm-9k320.h (STANDARD_STARTFILE_PREFIX): Let this be overridden.

Sat Jul  6 14:51:15 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* expr.c (expand_assignment): Don't abort for volatile structure field
	even if the structure is in a register.

	* fold-const.c (div_and_round_double): Make lnum and lden unsigned.
	Use the small-denominator algorithm only for denom < 2**24.
	Fix backward conditionals in ?: operators in general case.
	Change i + j to i - 1 + j when indexing num.

Wed Jul  3 11:40:27 1991  Michael Meissner  (meissner at osf.org)

	* expr.c (move_block_from_reg, move_block_to_reg): Protect block
	addresses from queued memory insns, which occur for things like *p++.

	* expr.c (move_block_from_reg, move_block_to_reg):  Add an alignment
	field that gives how much alignment the structure has.  If the md
	file provides movsi_unaligned, use it if the structure is not
	properly aligned.  Change all callers to pass the alignment in bits.

	* stmt.c (assign_params): Pass structure alignment to
	move_block_from_reg.

	* mips.md (movsi_unaligned): New define_expand to handle unaligned
	moves.
	(movsi_ulw, movsi_usw): New define_insn's to handle unaligned moves
	to/from a register.

Tue Jul  2 16:56:28 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* cccp.c: Include descrip.h.

Mon Jul  1 21:04:54 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* out-ns32k.c (output_move_double):
	Use CONSTANT_P to check for single-word constant.

Sun Jun 30 16:12:34 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* gnulib2.c (__builtin_saveregs):
	For i860, make data structure fit in with va-i860.h.

	* reload1.c (choose_reload_regs): Don't use reg_reloaded_contents
	for a reg that has a reg_equiv_address.

	* gnulib2.c, gnulib.c (abort): Get rid of any macro definition.

Sat Jun 29 09:27:12 1991  Michael Tiemann  (tiemann at cygint.cygnus.com)

	* out-sparc.c (single_insn_src_p): Reject any ASHIFT patterns with
	non-REG second operand.

Sat Jun 29 06:25:19 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* tm-vax.h (CPP_SPEC, LIB_SPEC): New macros.

	* reload.c (push_reload): Handle two different inmodes, etc.

	* gcc.c (S_ISREG): Define if not defined.
	(delete_temp_files): Use it.

	* limits.h (UCHAR_MAX, CHAR_MAX, USHRT_MAX): Delete `U'.
	(LONG_MAX, ULONG_MAX): Add `L'.

Fri Jun 28 22:21:54 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* Makefile (realclean): Delete stage1, stage2, stage3.

	* gcc.c (fatal) [HAVE_VFPRINTF]: Do print the program name.

Sat Jun  1 01:10:32 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* Version 1.40 released.

	* i386.md (divmodsi4, udivmodsi4): Add separate define_expands
	to force duplicated args into registers.

Thu May 30 00:32:18 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* expr.c (expand_expr):
	Don't lose volatility of fields in COMPONENT_REF.

	* fixincludes (stdtypes.h): Handle wchar_t like the other types.

Tue May 28 12:34:24 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* cse.c (canon_hash): Don't hash hard regs if SMALL_REGISTER_CLASSES.
	* tm-i386.h (SMALL_REGISTER_CLASSES): Define it.

	* expr.c (store_one_arg): Set used after calling push_rounding.

	* tm-decstatn.h (CPP_PREDEFINES): Add __ versions of macros.

	* tm-apollo68.h (LIB_SPEC): Renamed from LINK_SPEC.

Sun May 26 00:52:32 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* cse.c (refers_to_mem_p): Handle constants as addresses.

Thu May 23 12:35:25 1991  John Vasta  (vasta at apollo.hp.com)

	* tm-apollo68.h (STARTFILE_SPEC): Remove unneeded
	conditional and use correct file for ANSI mode.
	(LIB_SPEC): Deleted.
	(LINK_SPEC): Specify -e switch.

Wed May 22 14:35:13 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* tm-i386isc.h (STARTFILE_SPEC): Add missing %s.

	* tm-vaxv.h (ASM_OUTPUT_LOCAL): Use data_section.

Mon May 20 12:38:39 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* Makefile (float.h): Pass certain vars down to nested make.

	* hard-params.c [NO_LONG_DOUBLE]: Inhibit handling of long double.

	* m68k.md (trunc*): Clear cc if use wider insn.

Sun May 19 14:45:46 1991  Ron Guilmette  (rfg at ncd.com)

	* Makefile.in (clean): Delete stage1...stage4.
	(realclean): Delete cexp.output.

	* fixincludes: Handle BSD43__IO* and BSD43_CTRL like IO* and CTRL.

Sun May 19 15:00:05 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* fixincludes (machine/cpu.h):
	Create in proper dir.  Fix mips/cpu.h too.

Fri May 17 15:41:22 1991  James Van Artsdalen  (james at bigtex.cactus.org)

	* tm-i386v4.h (ASM_OUTPUT_COMMON): Don't attempt alignment on a
	three byte boundary.

Thu May 16 12:46:37 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* expr.c (convert_to_mode): Don't use gen_lowpart on most constants.

Mon May 13 23:42:03 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* expmed.c (store_bit_field, extract_bit_field):
	Temporarily set volatile_ok when checking predicates.

	* explow.c (force_not_mem): Do nothing for BLKmode.

	* tree.c (real_value_from_int_cst): Add parens to fix misparsings.

Sun May 12 22:39:42 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* tree.c (real_value_from_int_cst): Make MASK unsigned.

Wed May  8 11:19:32 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* rtl.c (reg_note_name): Put in REG_UNSET.  Remove dead ones.

	* tree.c (real_value_from_int_cst): Avoid converting unsigned to float.

	* stor-layout.c (round_size): Cast to int when comparing modes.

	* tm-ultrix.h (CPP_PREDEFINES): Define __vax.

Mon May  6 13:29:48 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* out-i386.c (fp_top_dead_p1): Look past any number of labels.

	* tm-aix386.h (ASM_FILE_START): Discard directories from .file arg.

Sat May  4 14:36:26 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* tm-hp9k320.h (CPP_SPEC): Always define _HPUX_SOURCE.
	Move other standard predefs with underscores here.
	(CPP_PREDEFINES): Standard predefs moved from here.

	* hard-params.c (EPROP): Avoid comparing a with out if bad is 1.

Thu May  2 14:43:48 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* math-68881.h (pow): Negate x if negative when taking log.

	* c-decl.c (finish_enum): Don't store the enum as the type of any of
	its enumerator values.

Wed May  1 15:02:15 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* c-decl.c (finish_enum): Rewrite handling of min and max values.
	Rewrite handling of flag_short enums.
	* stor-layout.c (round_size): New subroutine.

	* out-i386.c (fp_top_dead_p1): Use mentions_fp_top to check dest.

Tue Apr 30 14:41:58 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* expr.c (expand_call): Copy value to mem via a pseudo.

	* tm-decstatn.h (CPP_PREDEFINES): Define __mips and __LANGUAGE_C.

	* fixincludes (machine/cpu.h): Delete superfluous `static'.

	* Makefile (maketest): Don't stop on error in `if' statement.

Mon Apr 29 12:29:16 1991    (Eric Youngdale at [e-mail])

	* cccp.c (hack_vms_include_specification): Modified conversion of
	unix filenames to VMS filenames, if no VMS device or directory is
	present and a unix style directory name is present. In this case, use
	the first unix directory name as the VMS device spec. This is only
	used in '#include <...>' type includes, when the include file has
	not been found in the standard locations.

Mon Apr 29 22:18:47 1991  James Van Artsdalen  (james at bigtex.cactus.org)

	* tm-att386.h (ASM_OUTPUT_LOCAL): Align static local variables.

Mon Apr 29 13:50:55 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* reload1.c (emit_reload_insns): When changing the mode,
	make a REG, not a SUBREG.

	* out-i386.c (print_operand): For non-'c', print prefix for LABEL_REF.
 
	* c-decl.c (pushdecl): Just a warning for type of extern not global.

Wed Apr 17 12:44:16 1991  Richard Stallman  (rms at apple-gunkies)

	* stmt.c (use_variable, use_variable_after): Handleg subregs.

Sat Apr 13 10:10:28 1991  Eric Youngdale  ([e-mail])

	* cccp.c (hack_vms_include_specification)  Made parsing more
	intelligent when confronted with something like:
	"SYS$SYSROOT:[SYSLIB.]/foo.h".  Previously this routine would
	return a file specification that had a syntax error.  This example
	will now parsed to "SYS$SYSROOT:[SYSLIB]foo.h".

Fri Apr 12 02:37:07 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* expmed.c (store_bit_field): Don't die if VALUE is constant
	for a field bigger than a word.

	* tm-sparc.h (FUNCTION_BLOCK_PROFILER): Must set %o0 to the address
	LPBX0 by adding in the low part of the address before calling
	___bb_init_func.

	* cccp.c (skip_to_end_of_comment): Handle warn_comment.

	* out-m68k.c (output_move_double): Really test HOST_WORDS_BIG_ENDIAN.

	* config.gcc (i386-isc): New target.
	* tm-i386isc.h: New file.

	* m68k.md (dbra patterns): Use `=' in constraint of op 0.