changelog.10

GCC编译器源代码

	* hard-reg-set.h (HARD_REG macros): If more than
	HOST_BITS_PER_WIDE_INT hard registers and less than or equal to
	4*HOST_BITS_PER_WIDE_INT hard registers, unroll loops by hand.

Mon Feb 19 07:35:07 1996  Torbjorn Granlund  <[e-mail]>

	* rs6000.md (not:SI with assign and compare): Fix typo.
	(not:DI with assign and compare): Likewise.

Mon Feb 19 07:17:25 1996  Richard Kenner  ([e-mail])

	* sparc.md (nonlocal_goto): No longer need USE of %o0.
	(goto_handler_and_restore): Show uses %o0.

	* combine.c (force_to_mode, case IOR): Fix typo in commuting
	IOR and LSHIFTRT.

	* alpha.c (call_operand): If in REG, only reg 27 valid.

Mon Feb 19 06:57:34 1996  Richard Earnshaw ([e-mail])

	* emit-rtl.c (operand_subword): For 32-bit targets, return
	the appropriate subword of extended precision CONST_DOUBLEs.

	* arm.c (offsettable_memory_operand): New function.
	(alignable_memory_operand): New function.
	(gen_rotated_half_load): New function.
	(get_arm_condition_code): Extract the mode of the comparison and
	use it to generate the correct return value.
	* arm.h (EXTRA_CC_MODES, EXTRA_CC_NAMES): Add CC_Zmode.
	(SELECT_CC_MODE): return CC_Zmode if the operand is QImode.  Allow LT
	and GE comparisons in CC_NOOVmode.
	(PREDICATE_CODES): add offsettable_memory_operand and
	alignable_memory_operand.
	* arm.md (*zeroextract[qs]i_compare0_scratch): Use const_int_operand
	for operands 1 and 2.
	(split patterns for aligned memory half-word operations): New patterns.
	(movhi): Handle memory accesses where the alignment is known in a more
	efficient manner.
	(*compareqi_eq0): Use CC_Zmode.

Mon Feb 19 05:34:08 1996  Jason Merrill  <[e-mail]>

	* toplev.c (lang_options): Add -W{no-,}sign-compare.

	* c-tree.h: Declare warn_sign_compare.

	* c-typeck.c (build_binary_op): Check warn_sign_compare rather
        than extra_warnings to decide whether to warn about comparison of
        signed and unsigned.

	* c-decl.c (c_decode_option): Handle warn_sign_compare.  -Wall
        implies -Wsign-compare.

Sun Feb 18 21:13:44 1996  Pat Rankin  ([e-mail])

	* c-lex.c (yylex, case '0'..'9','.'): For cases '0' and '1',
	check for single digit constant before resorting to general
	number processing.

Sun Feb 18 19:29:44 1996  J.T. Conklin  <[e-mail]>

	* m68k.h (TARGET_68060): New macro.
	(TARGET_SWITCHES): Add -m68060.
	* m68k.md (const_umulsi3_highpart): Disable for TARGET_M68060.
	(ftruncdf2, ftruncsf2, muldf3, mulsidi3): Likewise.
	(smulsi3_highpart, umulsi3_highpart, umulsidi3): Likewise.

	* {m68k,ns32k,sparc}/netbsd.h (DBX_NO_XREFS): Removed.

Sun Feb 18 13:29:56 1996  Charles M. Hannum  ([e-mail])

	* c-common.c (check_format_info): Warn about `L' if -pedantic.

Fri Feb 16 20:13:23 1996  Paul Eggert  <[e-mail]>

	* c-typeck.c (convert_for_assignment):
	Bring back conversion to union without a cast,
	undoing the Jan 16 change, but with the following differences:
	- The union must have the transparent_union attribute.
	- The conversion must be for a function argument.
	- Warn consistently about such conversions if pedantic.
	- Do not warn about an assignment incompatibility for one union member
	  if another union member is compatible with no warning.

Fri Feb 16 12:06:21 1996  Stan Cox  <[e-mail]>

	* i386.c (ix86_*_binary_operator*): Allow CONST_INT as operand1
	of MINUS.
	* i386/dgux.h (OPTIMIZATION_OPTIONS): Call optimization_options.

Fri Feb 16 08:39:47 1996  Richard Kenner  ([e-mail])

	* configure: Change stdout report when have multiple files in
	tm_file, host_xm_file, or build_xm_file.
	(a29k-*-bsd): Use both a29k.h and unix.h.
	(a29k-*-udi): Rename a29k-udi.h to udi.h;
	use a29k.h, dbxcoff.h, and it.
	(a29k-*-vxworks): Use a29k.h, dbxcoff.h, a29k/udi.h, and a29k/vx29k.h.
	(alpha-dec-osf[23456789]*): Use alpha.h, not osf2.h.
	(alpha-dec-osf1.2): Use alpha.h and alpha/osf12.h.
	(alpha-*-osf*): Add explicit assignment of tm_file.
	* a29k/udi.h: Renamed from a29k-udi.h.
	Don't include a29k.h or dbxcoff.h.
	* a29k/unix.h: Don't include a29k.h.
	* a29k/vx29k.h: Don't include a29k-udi.h.
	* alpha.h (WCHAR_TYPE, WCHAR_TYPE_SIZE): Use unsigned int.
	* alpha/osf2.h: Deleted.
	* alpha/osf12.h: Don't include alpha.h.
	(WCHAR_TYPE, WCHAR_TYPE_SIZE): Use short unsigned int.
	* alpha/win-nt.h (WCHAR_TYPE, WCHAR_TYPE_SIZE): Use short unsigned int.

Thu Feb 15 18:26:04 1996  Michael Meissner  <[e-mail]>

	* rs6000/ntstack.asm (__allocate_stack): Round up length to 16
	byte boundary.

	* rs6000.md (allocate_stack): On Windows NT, call set_sp to
	indicate to CSE  stack pointer changes with  call to __allocate_stack.
	(set_sp): New pattern.

Thu Feb 15 16:49:15 1996  Jim Wilson  <[e-mail]>

	* integrate.c (save_for_inline_copying): Allocate reg_map with size
	based on regno_pointer_flag_length instead of max_reg+1.

Thu Feb 15 07:48:34 1996  Richard Kenner  ([e-mail])

	* fixincludes (rpc/types.h): Remove spurious "ls" command.

	* reload1.c (eliminate_regs, case USE): If using a register that
	is source of elimination, show can't be eliminated.

	* expr.c (expand_builtin, case BUILT_IN_SETJMP): Shows clobbers FP
	and all caller-save registers.
	Set current_function_has_nonlocal_goto.

Wed Feb 14 13:51:55 1996  David Edelsohn  <[e-mail]>

	* rs6000.md (fix_truncdfsi2): Use SUBREG not operand_subword.
	(movdi): Test HOST_BITS_PER_WIDE_INT at build time.
	* collect2.c (scan_libraries): Append '/' to import path if missing.

Wed Feb 14 09:01:55 1996  Michael Meissner  <[e-mail]>

	* rs6000.md (movdi): Use HOST_WIDE_INT, not long long.

Tue Feb 13 19:36:21 1996  Per Bothner  <[e-mail]>

	* expr.c (store_constructor):  Fix flow control thinko (merge error).
	* expr.c (store_constructor):  Pass correct value to recursive call.

Wed Jan 31 11:34:45 1996  Mike Stump  <[e-mail]>

	* expr.c (expand_expr, case TARGET_EXPR): We must always store
	into the allocated slot for TAREGT_EXPRs.

Tue Feb 13 18:27:05 1996  Philippe De Muyter  <[e-mail]>

	* configure (powerpc-ibm-aix3): Look for 3.2.x, not 3.2x.

	* fixincludes (memory.h): Fix it also on sysV68.

Tue Feb 13 17:59:03 1996  Lee Iverson  <[e-mail]>

	* gcc.c (DEFAULT_SWITCH_TAKES_ARG): New macro, from SWITCH_TAKES_ARG.
	(SWITCH_TAKES_ARG): Use it.
	* i386/{osfrose,sol2}.h (SWITCH_TAKES_ARG): Likewise.
	* mips/{gnu,mips}.h (SWITCH_TAKES_ARG): Likewise.
	* sparc/sol2.h (SWITCH_TAKES_ARG): Likewise.
	* config/svr4.h (SWITCH_TAKES_ARG): Likewise.

Tue Feb 13 17:43:46 1996  Jim Wilson  <[e-mail]>

	* integrate.c (save_constants_in_decl_trees): New function.
	(save_for_inline_copying, save_for_inline_nocopy): Call it.

Tue Feb 13 17:40:27 1996  Richard Kenner  <[e-mail]>

	* expr.c (convert_move): Fix typo in extendqfh2 case.

	* reload1.c (reload): Make some non-group code no longer
 	conditional on SMALL_REGISTER_CLASSES.

Tue Feb 13 17:30:45 1996  J"orn Rennecke ([e-mail])

	* pdp11.c: #include flags.h
	(output_function_prologue, function_epilogue): Remove declarations
	of call_used_regs and frame_pointer_needed.

	* c-common.c (overflow_warning): Fix typo in warning message.

	* c-decl.c (finish_decl): TREE_ASM_WRITTEN says if duplicate_decls
	modified declaration to match an outside file scope declaration.

	* stmt.c (expand_end_case): Don't use ADDR_DIFF_VEC for PIC if
	ASM_OUTPUT_ADDR_DIFF_ELT is not defined.
	* a29k.h, romp.h (ASM_OUTPUT_ADDR_DIFF_ELT): Remove.

Tue Feb 13 13:36:36 1996  Michael Meissner  <[e-mail]>

	* rs6000/cygwin32.h (CPP_PREDEFINES): Do not define PPC, just
	define __PPC__.  Also define _ARCH_PPC to be compatible with the
	other rs6000/powerpc ports.
	* rs6000/win-nt.h (CPP_PREDEFINES): Ditto.

	* rs6000/cygwin32.h (LIBGCC_SPEC): Don't define, always link in.
	(SDB_DEBUGGING_INFO): Undef.
	(DBX_DEBUGGING_INFO): Define.
	(PREFERRED_DEBUGGING_TYPE): Define as DBX_DEBUG.

	* rs6000/t-{cygwin32,winnt} (MULTILIB*): Remove multilib support.

	* rs6000/x-cygwin32 (LANGUAGES): Delete, don't override.

	* rs6000/ntstack.asm: New file to provide __allocate_stack, which
	guarantees all pages in a dynamically allocated stack frame are
	touched in order, so that the stack is properly grown.

	* rs6000/cgywin32.asm: Delete unused file.

	* rs6000/t-{cygwin32,winnt} (LIB2FUNCS_EXTRA): Add ntstack.S
	to libgcc2 build.

	* rs6000.md (allocate_stack): For NT, call __allocate_stack to
	bump the stack if the size is large or variable.

	* libgcc1-test.c (mainCRTStartup,__start): New startup functions
	to silence more linkers.

Tue Feb 13 13:30:53 1996  Jim Wilson  <[e-mail]>

	* expr.c (store_constructor_field): Only call change_address if
	bitpos is nonzero.

Tue Feb 13 08:21:01 1996  Fila Kolodny <[e-mail]>

	* i370/mvs.h (CPP_SPEC): Add '-trigraphs' because IBM's h files
	contain them.

Tue Feb 13 08:17:52 1996  Bernd Schmidt  <[e-mail]>

	* c-typeck.c (quality_type prototype): Typo, rename as
	qualify_type.
	(build_binary_op): Fix precedence errors.
	* combine.c (force_to_mode, num_sign_bit_copies, simplify_comparison):
	Fix precedence errors.
	* emit-rtl.c (gen_lowpart): Could return without a value.
	* jump.c (jump_optimize): Fix potential infinite loop.
	* reg-stack.c (record_reg_life_pat): Fix precedence error.
	* reload1.c (emit_reload_insns): Fix precedence errors.
	* stmt.c (bc_pushcase): Fix precedence error.

Mon Feb 12 23:14:02 1996  Jason Merrill  <[e-mail]>

	* toplev.c (rest_of_compilation): Also set RTX_INTEGRATED_P when
 	we aren't going to emit the inline just yet.

Mon Feb 12 21:31:02 1996  Jim Wilson  <[e-mail]>

	* rtl.h (INLINE_REGNO_POINTER_FLAG, INLINE_REGNO_POINTER_ALIGN):
	Add one to array index.

Mon Feb 12 20:55:39 1996  H.J. Lu  ([e-mail])

	* configure (i[345]86-*-linux*): Set tmake_file t-linux.
	Add crtbeginS.o and crtendS.o to extra_parts.
	* i386/linux.h (CC1, LIB_SPEC): Deleted.
	* config/linux.h (STARTFILE_SPEC): Add crtbeginS.o if -shared.
	(CC1_SPEC): New.
	(LIB_SPEC): Remove %{mieee-fp:-lieee}; use -lc_p for -profile.
	* config/t-linux: New file.

Mon Feb 12 20:42:11 1996  Randy Smith  <[e-mail]>

	* i386/x-osfrose (XCFLAGS{,_NODEBUG}): Remove $(SHLIB).
	(XCFLAGS): New variable.
	(libdir, mandir, bindir): Delete.
	* i386/t-osf: New file.
	* i860/paragon.h (STARTFILE_SPEC): Make gcc find crt0.o, not loader.
	(LIB_SPEC): Remove /usr/lib.
	* Makefile.in (TCFLAGS): New variable.
	(GCC_CFLAGS): Add $(TCFLAGS).
	(LIBGCC2_CFLAGS): Add -D for __GCC_FLOAT_NOT_NEEDED.
	(libgcc1-test): Remove -nostdlib.
	(float.h-cross): Don't give error #ifdef __GCC_FLOAT_NOT_NEEDED.
	* enquire.c: Define __GCC_FLOAT_NOT_NEEEDED.
	* configure (i[3456]86-*-osfrose): Add t-osf as tmake_file.

Mon Feb 12 18:43:54 1996  Oliver Kellogg  ([e-mail])

	* 1750a.c (add_1_to_mem): Corrected.

Mon Feb 12 18:23:35 1996  Doug Evans  <[e-mail]>

	* configure (sparclet-*-aout*): New configuration.

Mon Feb 12 14:43:50 1996  Per Bothner  <[e-mail]>

	Changes to distinguish typedef from original type in debug output.
	* tree.h (DECL_ORIGINAL_TYPE):  New macro.
	* tree.c (copy_node):  Zero out type.symtab union.
	* c-decl.c (pushdecl):  Set DECL_ORIGINAL_TYPE for typedef origin.
	* dbxout,c (dbxout_type):  Don't canonicalize typedef type to base.

Mon Feb 12 12:01:16 1996  Richard Earnshaw ([e-mail])

	* arm.h: (CPP_SPEC): Define __ARMEB__, __ARMEL__, and
	__ARMWEL__ depending on the endian flags passed to the compiler.
	(ARM_FLAG_LITTLE_WORDS): Define.
	(TARGET_SWITCHES): Add option -mwords-little-endian.
	(TARGET_LITTLE_WORDS): Define.
	(WORDS_BIG_ENDIAN): Select based on the endian switches.
	(LIBGCC2_WORDS_BIG_ENDIAN): Define based on run-time endian
	defines.
	* arm.c (output_move_double): Cope with both word-endian
	alternatives.  Remove extraneous parameters from calls to
	output_mov_immediate.
	(arm_print_operand): New print code 'Q' for the least significant
	register of a DImode operand.  Make code 'R' always print the
	most significant register, rather than the highest numbered.
	* arm.md (all DImode output patterns): Use print code
	'Q' to access the least significant word.  Make sure the
	patterns are fully aware of the word endianness.

	* arm/semi.h (CPP_SPEC):  Define __ARMEB__, __ARMEL__, and
	__ARMWEL__ depending on the endian flags passed to the compiler.
	(LINK_SPEC): Pass -EB to the linker if compiling for big-endian
	mode.
	(ASM