changelog.6

GCC编译器源代码

	* combine.c (subst): Don't change a conditional branch into a
	conditional move.

	* m88k.md (ext shift patterns): No longer needed.

	* m88k.c (mostly_false_jump): Recognize a sequence properly.
 
Mon Oct 12 22:31:37 1992  Jeffrey A. Law  ([e-mail])

	* pa.h (LEGITIMIZE_ADDRESS): Fix typo.

Tue Oct 13 00:14:09 1992  H Lu  ([e-mail])

	* Makefile.in (install-common): Put - on cmd that handles protoize.
	(gcc.o, cccp.o): Define TOOLDIR for the compilation.
	(all HOST_PREFIX_1 targets): Fix typos.

	* x-linux (cpp.a, linux.a, cc1.a, cc1plus.a, gcc.a): Targets deleted.
	(LD, ALIBS, STANDARD_STARTFILE_PREFIX, GPLUSPLUS_INCLUDE_DIR):
	Vars deleted.

	* i386linux.h: Delete NO_JUMPTABLE conditional and contents.
	(GPLUSPLUS_INCLUDE_DIR): Defined.
	(STARTFILE_SPEC): Changed.

	* gen*.c: Include hconfig.h, not config.h.

Mon Oct 12 16:25:22 1992  Richard Stallman  ([e-mail])

	* configure.bat, vmsconfig.com: Make hconfig.h.

	* vax.h (PRINT_OPERAND): Detect `double' constants by DFmode,
	since VOIDmode means an integer.

	* mips.h (DEBUG_REGISTER_NAMES): New macro definition.
	* print-rtl.c (reg_names):
	Make it static.  Use DEBUG_REGISTER_NAMES if that's defined.
	* regclass.c (reg_names): Reinstate the definition here.

	* fixinc.svr4: Delete excess fi in fixing stat.h.

Mon Oct 12 08:10:37 1992  James Van Artsdalen  ([e-mail])

	* Makefile.in (install-fixincludes): Only delete an existing
	syslimits.h if we install limits.h over it.

	* i386.h (PRINT_REG): Undo Oct 11 change.
	(DEBUG_PRINT_REG): New macro, used from print-rtl.c.

	* conditions.h (CC_NOT_SIGNED): New macro.
	* final.c (alter_cond): If CC_NOT_SIGNED, convert signed
	conditions to unsigned.

	* i386.md (cmpstrM patterns): Compare strings of unsigned chars,
	not strings of signed chars.

Mon Oct 12 06:31:13 1992  Richard Kenner  ([e-mail])

	* combine.c (try_combine): Save DEST of NI2PAT before calling
	recog_for_combine, which might make it a PARALLEL.

	* emit-rtl.c (gen_lowpart_common): Allow MODE_PARTIAL_INT where
	MODE_INT is allowed.

	* combine.c (try_combine): Properly call single_set when validating
	the result of a define_split.

Mon Oct 12 00:24:29 1992  Richard Stallman  ([e-mail])

	* calls.c (calls_alloca): Don't look within DECL_INITIAL if it's 0.

	* varasm.c (simplify_subtraction): New function.
	* rtl.h (simplify_subtraction): Declared.
	* final.c (output_addr_const): Call it.

	* print-rtl.c (DEBUG_PRINT_REG): Renamed from PRINT_REG.
	(print_rtx): Use DEBUG_PRINT_REG.

Sun Oct 11 16:27:53 1992  Richard Kenner  ([e-mail])

	* genrecog.c (merge_trees): When splitting, remember to clear DUPNO
	in addition to the other things we can test.

	* recog.c (general_operand, immediate_operand, const_double_operand):
	Allow CONST_INT with MODE_PARTIAL_INT.
	(nonmemory_operand): Likewise.

Sun Oct 11 07:53:39 1992  James Van Artsdalen  (james at bigtex.cactus.org)

	* xm-i38v4.h,xm-aix386.h (USE_C_ALLOCA): New macro.  Define if not
	using GNU C's builtin alloca.

	* i386.c (notice_update_cc): Only set CC_IN_80387 for float compares.

	* i386.h (PRINT_REG): Make register name arrays static within this
	macro.

Sun Oct 11 01:41:06 1992  Richard Stallman  ([e-mail])

	* jump.c (jump_optimize): Don't optimize jumps to store-flag insns
	when BLKmode values are being compared.

Sat Oct 10 16:51:08 1992  Richard Stallman  ([e-mail])

	* print-rtl.c (print_rtx): Print hard reg name as well as number.
	(PRINT_REG): New macro with default definition.
	(reg_name): Moved here.
	* regclass.c (reg_name): Deleted.

Sat Oct 10 02:27:14 1992  James Van Artsdalen  (james at bigtex.cactus.org)

	* i386sco.h (TARGET_DEFAULT): New macro - don't make TARGET_IEEE_FP
	default for SCO.

Sat Oct 10 04:52:06 1992  Richard Stallman  ([e-mail])

	* function.h (struct function): New fields const_rtx_hash_table,
	const_rtx_sym_hash_table, first_pool, last_pool, pool_offset.
	* function.c (pop_function_context, push_function_context):
	Call {save,restore}_varasm_status.
	* varasm.c: Include function.h.
	(restore_varasm_status, save_varasm_status): New fns.
	(init_const_rtx_hash_table): Allocate the hash tables in obstack.
	(force_const_mem): Don't use CONST_DOUBLE_MEM for nested fns.
	(clear_const_double_mem): Do nothing for nested fns.
	* Makefile.in (varasm.o): Dep on function.h.

Fri Oct  9 18:16:18 1992  Brendan Kehoe  ([e-mail])

	* cp-decl.c (duplicate_decls): Only find out if olddecl is a
	friend after we know it's not a TREE_LIST.

Fri Oct  9 18:10:19 1992  Jim Wilson  ([e-mail])

	* sparc.c (sparc_type_code): Return reasonable result for COMPLEX_TYPE.

Fri Oct  9 14:33:26 1992  Tom Wood  ([e-mail])

	* reorg.c (start_of_epilogue_needs): New variable.
	(mark_target_live_regs): Add in start_of_epilogue_needs when
	NOTE_INSN_EPILOGUE_BEG is scanned.
	(dbr_schedule): Compute start_of_epilogue_needs and update
	end_of_function_needs to include sets by all instructions
	following NOTE_INSN_EPILOGUE_BEG.

	* m88k.md (return): Always available once reload has completed.
	(epilogue): Use a return insn rather than an indirect jump.

Fri Oct  9 12:36:54 1992  Richard Stallman  ([e-mail])

	* spc-sol2.h (DBX_DEBUGGING_INFO): Defined.

	* function.c (aggregate_value_p): Return 1 if regs we would use
	are not all call-clobbered.

	* stmt.c (POPSTACK): Pop discarded elts off all the stacks as we go.

Fri Oct  9 07:30:14 1992  Richard Kenner  ([e-mail])

	* reorg.c (mark_target_live_regs): Fix bug in last change.

	* combine.c (subst, case SUBREG): Don't make a new REG for
	stack, frame, or arg pointer.
	* emit-rtl.c (gen_lowpart_common, gen_highpart, operand_subword):
	Likewise.

	* local-alloc.c (optimize_reg_copy_1): Tighten up code to properly
	handle the case when SRC or DEST is a multi-word hard register
	and only some parts of the register are set or used.  Also, avoid
	updating register status for DEST if we can't do the optimization.

	* jump.c (jump_optimize): Only use a REG as a target.

	* alpha.c (alpha_builtin_saveregs): Don't use value of NREGS greater
	than 6 when computing ARGSIZE.

	* va-alpha.h (va_arg): Put parens around all uses of __VA arg.

Thu Oct  8 18:45:00 1992  Arne H. Juul  ([e-mail])

	* Makefile.in (install-common-headers): added missing 'then'

Thu Oct  8 15:52:22 1992  Michael Meissner  ([e-mail])

	* mips.h (SELECT_RTX_SECTION): Rename macro from obsolete name
	SELECT_SECTION_MODE.

	* i386rose.h (whole file): Remove #ifdef before #undef of macros.
	(LEGITIMATE_CONSTANT_P): Define, so that when half-pic is on,
	half-pic addresses are not considered legitimate.
	(SELECT_RTX_SECTION): If putting a half-pic pointer that is
	loaded, put the pointer into the data section, rather than the
	readonly_data_section.
	(SELECT_SECTION): Define.
	(ASM_OUTPUT_DOUBLE): If not cross compiling, emit double as two
	longs, otherwise emit .double directive.
	(ASM_OUTPUT_FLOAT): If not cross compiling, emit float as long,
	otherwise emit .float directive.
	(perform_fixdfsi): Copy arg to memory variable.
	(SIZE_TYPE): Define to be long unsigned int.
	(PTRDIFF_TYPE): Define to be int.
	(WCHAR_TYPE)L: Define to be unsigned int.

	* i386.md (movsi): Remove obsolete half-pic code.
	(call insns): For half-pic insns, force address into register.

Thu Oct  8 14:22:05 1992  Richard Stallman  ([e-mail])

	* Makefile.in (install-common-headers): Fix dir in chmods for assert.h.

	* va-i860.h (__savereg, va_arg): Put uses of __va in parens.

	* vax.h (PRINT_OPERAND): Define new code, D.
	* vax.md (movdi): Use D code for operand 1.

Thu Oct  8 13:23:25 1992  Jeffrey A. Law  ([e-mail])

	* pa.md (fp_alu function unit, case fpcc): Fpcc instructions use
	the fpalu unit.  In the most common case their result will be used
	in a ftest instruction.  Minimum distance between the fcmp and 
	ftest instruction is 4.

Thu Oct  8 06:41:15 1992  Tom Wood  ([e-mail])

	* function.c (assign_parms): Provide a safe value for
	DECL_INCOMING_RTL in case of syntax errors.

	* dwarfout.c (dwarfout_init, dwarfout_finish): Don't output labels
	or .debug_aranges entries for .data1 and .rodata1 as these
	sections aren't currently used.

Thu Oct  8 04:44:17 1992  Richard Kenner  ([e-mail])

	* reorg.c (mark_target_live_regs): Look at USE insns made by
	update_block when scanning forward past target.
	(mark_target_live_regs, dbr_schedule): Use GET_RTX_CLASS.

	* cse.c (PATHLENGH): Change from 20 to 10 to speed up compilations.

Thu Oct  8 03:07:33 1992  Richard Stallman  ([e-mail])

	* fold-const.c (invert_truthvalue): Never alter ARG.

	* Makefile.in (TAGS): Exclude =*.[chy] from tags table.

	* c-lex.c (yylex): For floats, use REAL_VALUES_LESS to distinguish
	underflow from overflow.  Delete special case for 0.0.

Wed Oct  7 16:25:19 1992  Tom Wood  ([e-mail])

	* dwarfout.c (dwarfout_{begin,end}_function): New functions.
	(body_{begin,end}_attribute): New functions.
	(dwarf_attr_name): Print AT_body_begin and AT_body_end.
	(output_{local,global}_subroutine_die): Output the new attributes.
	* dwarf.h (enum dwarf_attribute): Add At_body_begin and AT_body_end.
	* final.c (final_scan_insn): Call dwarfout_begin_function.
	(final_end_function): Call dwarfout_end_function.

	* m88k.h (FASTEST_ALIGNMENT): Define as 8 for -m88110 otherwise 4.
	(CONSTANT_ALIGNMENT, DATA_ALIGNMENT): Base on FASTEST_ALIGNMENT.
	* m88k.md (movstrsi): No predicate is needed for the source or
	destination.
	* m88k.c (best_from_align): Add a target processor dimension for
	-m88000, -m88110, and -m88100.
	(expand_block_move): Choose method and limits based on -m88xxx option.
	(block_move_no_loop): Extend to allow DImode.
	* m88k-move.sh: Add the modules moveDI96x and moveDI41x through
	moveDI47x.
	* t-m88k, t-m88kluna, t-m88ksvr4: New modules added to MOVE_ASM.

	* m88k.c (output_call): Use different syntax for GAS.

	* m88k.h (READONLY_DATA_SECTION): Don't override svr4.h
	(ASM_OUTPUT_CASE_LABEL): For svr4, use .rodata.

Wed Oct  7 15:47:19 1992  Richard Stallman  ([e-mail])

	* configure (i486-ncr-sysv4): Use i386v4.h.
	(i386-*-sysv4, i386-*-linux, i386-*-sysv): Handle 486 too.
	(i486-*-sysv4, i486-*-linux): Deleted.
	* i486v4.h, i486linux.h: Files deleted.

Wed Oct  7 12:40:00 PDT 1992  Ron Guilmette (rfg at netcom.com)

	* populate (progname):  Just the basename of $0 please.
	(target_dir):  Use abs_target_dir and rel_target_dir for clarity.
	(source_dir):  Use abs_source_dir and rel_source_dir for clarity.
	(*):  List input and output dirs on startup.
	(*):  Don't be so verbose; Don't echo names of output dirs/files as
	they are created.

	* fixinc.svr4 (<sys/signal.h>):  Fix types of SIG_DFL, SIG_ERR,
	SIG_IGN, and SIG_HOLD.
	(<sys/stat.h>): Turn definitions of stat, lstat, fstat, and mknod
	into ANSI syntax and add __ to variables used.

	* c-parse.in (component_decl_list):  Do pedwarn for missing semicolon
	after last field decl.

Wed Oct  7 09:49:34 1992  Michael Meissner  ([e-mail])

	* decstatn.h (LINK_SPEC): Don't define if it is already defined,
	ie dec-osf1.h has included decstatn.h.

	* dec-osf1.h (MACHINE_TYPE): Redefine to say DEC OSF/1 instead of
	ultrix.

Wed Oct  7 03:50:11 1992  Richard Stallman  ([e-mail])

	* configure (target_cpu_default): Var renamed from target_default.
	Set it to 2, for a 486.  Define TARGET_CPU_DEFAULT macro.

	* i386.h (TARGET_CPU_DEFAULT): Add default definition.
	(TARGET_SWITCHES): Include that in the default.

	* toplev.c (main): Recover correctly from invalid -Wid-clash option.

	* cccp.c (finclude): Set fp->buf earlier, so it's freed on error.

	* Makefile.in (install-common-headers): Avoid ! operator, for assert.h.

Tue Oct  6 20:21:21 1992  Jim Wilson  ([e-mail])

	* unroll.c (copy_loop_body, JUMP_INSN case): Delete abort in the
	code for setting the JUMP_LABEL field.

Tue Oct  6 19:29:19 1992  Brendan Kehoe  ([e-mail])

	* cp-call.c (build_overload_call_real): If `functions' is an
	ADDR_EXPR (as with operator new and delete), give the name of its
	argument as the error fn.

Tue Oct  6 14:15:15 1992  Richard Stallman  ([e-mail])

	* configure: Correct conditional in setting build_xm_file.

	* function.c (get_first_block_beg): New function.

	* cross-make (assertdir): Override usual definition.
	* Makefile.in (install-common-headers): chmod assert.h in proper dir.
	Use $(assertdir).
	(assertdir): New variable.
	(install-dir): Create dir $(includedir).
	(includedir): Make this /usr/local/include.

Tue Oct  6 12:05:35 1992  Jeffrey A. Law  ([e-mail])

	* pa.md (memory function unit, load case): Loads take two cycles,
	not one.

Tue Oct  6 07:56:05 1992  Torbjorn Granlund  ([e-mail])