changelog.9

GUN开源阻止下的编译器GCC

Tue Feb 28 16:36:58 1995  Michael Meissner  <[e-mail]>

	* rs6000/eabi.asm (__eabi): Correctly reload r30 in the case where
	the GOT pointers have to be relocated.

	* rs6000/rs6000.md (floatsidf2, floatunssidf2): Add
	TARGET_SOFT_FLOAT conditional dropped in the last change.
	(movdf insns): Add -msoft-float varients that do not use 'f' register
	constraints.
	(movti): On PowerPC, don't clobber the MQ register, since it doesn't
	exist.  Add abort to default switch case.
	(store_multiple, load_multiple): Test for TARGET_POWER instead
	of !TARGET_POWERPC to determine whether the MQ register exists.

Tue Feb 28 14:46:48 1995  Doug Evans  <[e-mail]>

	* configure (extra_headers): Renamed from header_files.

	* toplev.c (rest_of_compilation): Defer output of static inlines
	even if not optimizing, they may never be referenced.

Mon Feb 27 17:06:47 1995  Doug Evans  <[e-mail]>

	* cccp.c (do_include): Check for redundant file before opening in
	relative path case.  Don't call fstat unnecessarily.

Mon Feb 27 11:20:29 1995  Jim Wilson  <[e-mail]>

	* mips.md (muldi3_internal): Change dmul to dmult.

Mon Feb 27 02:30:54 1995  Jeffrey A. Law  <[e-mail]>

	* pa.c (hppa_expand_prologue): Don't save the PIC register into
	the stack for functions which have no stack of their own.

Mon Feb 27 00:43:32 1995  Roland McGrath  <[e-mail]>

	* config/gnu.h (ASM_SPEC): Macro removed.

Sun Feb 26 20:21:52 1995  Doug Evans  <[e-mail]>

	* reload.c (find_reloads_address): Fix typo in reg+const case.

Sat Feb 25 10:21:13 1995  Doug Evans  <[e-mail]>

	* gcc.c (print_search_dirs): New variable.
	(build_search_list): New function.
	(putenv_from_prefixes): Call it.
	(option_map): New option --print-search-dirs.
	(process_command): Handle it.
	(main): Print installation directory and exec/startfile_prefixes if
	--print-search-dirs given.

	* Makefile.in (Makefile): Delete config.run afterwards.
	(distclean): Delete config.run.

Sat Feb 25 08:36:40 1995  David Mosberger-Tang  ([e-mail])

	* alpha.h (ASM_SPEC): Pass -pg to assembler.
	(FUNCTION_PROFILER): Do nothing; the assembler does it for us.

Sat Feb 25 08:24:27 1995  H.J. Lu   ([e-mail])

	* configure (native_prefix): New; lets some hosts put
	files in /usr instead of /usr/local if no --prefix specified.

Sat Feb 25 08:07:56 1995  David Edelsohn  <[e-mail]>

	* rs6000.h (RTX_COSTS): Add cost of FFS.

Sat Feb 25 06:52:22 1995  Richard Kenner  ([e-mail])

	* mips.c (mips_fill_delay_slot): Fix typo in call to FP_REG_P.

	* cse.c (simplify_unary_operation): If operand mode is VOIDmode
	for UNSIGNED_FLOAT and operand looks negative, can't simplify.

	* rs6000.c (low_32_bit_operand): New function.
	* rs6000.h (PREDICATE_CODES): Add low_32_bit_operand.
	* rs6000.md: Remove unneeded tests on HOST_BITS_PER_INT from 
	some extra conditions.
	Use low_32_bit_operand for (plus:DI (zero_extend:DI ..) ..) cases.

Sat Feb 25 00:49:29 1995  Roland McGrath  <[e-mail]>

	* config/xm-gnu.h (POSIX): Define this macro.

	* config/gnu.h (GNU_CPP_PREDEFINES): Add missing backslash.

Fri Feb 24 19:17:29 1995  Jeffrey A. Law  <[e-mail]>

	* configure (hppa1.?-hp-hpux9*): Use hpux9 configuration files.
	* pa-hpux9.h, pa-ghpux9.h, pa1-hpux9.h, pa1-ghpux9.h: New
	configuration files.

Fri Feb 24 15:55:33 1995  Jim Wilson  <[e-mail]>

	* reorg.c (relax_delay_slots): When searching for next CODE_LABEL,
	use next_real_insn not next_active_insn.

	* stdarg.h, va-*.h, varargs.h (va_end): Expand to a void expression
	instead of nothing.

	* sh.h (PACKSTRUCT_BIT, TARGET_PACKSTRUCT): Change to PADSTRUCT.
	Add comment saying that the option is not useful.
	(TARGET_SWITCHES): Change -mpackstruct option to -mpadstruct.
	(STRUCTURE_SIZE_BOUNDARY): Change PACKSTRUCT to PADSTRUCT changing
	default value from 32 to 8.

	* dwarfout.c (PUSHSECTION_FORMAT): Add a leading tab.

	* expr.c (expand_expr, case COMPONENT_REF): Don't fetch unaligned
	field if we only want its address.

	* i960.c (fp_literal_one, fp_literal_zero): Don't accept VOIDmode.
	(i960_output_ldconst): In DFmode code, delete code to handle FP_REG_P
	target.  In DFmode and SFmode code, delete test for HOST_FLOAT_FORMAT
	== TARGET_FLOAT_FORMAT.
	* i960.h (REAL_ARITHMETIC): Define.
	(LEGITIMATE_CONSTANT_P): Pass argument mode not VOIDmode to fp_literal.

	* i960.h (CC1_SPEC): Don't output implicit -gstabs or -gcoff option
	if user gave an explicit one.
	* vx960-coff.h (CC1_SPEC): Likewise.

	* dbxout.c (GDB_INV_REF_REGPARM_STABS_LETTER): New macro.
	(dbxout_parms): For gdb, output use GDB_INV_REF_REGPARM_STABS_LETTER
	for parameters passed by invisible reference in registers.

	* mips.c (mips_secondary_reload_class): Also handle SUBREGs.
	* mips.md (madsi): Don't use '+' constraint in a clobber.
	(madsi_highpart, umadsi_highpart): Delete.

	* dbxout.c (dbxout_parms): For parameters passed in memory, delete
	obsolete code to handle parameters converted and stored back to
	the stack slot where they were passed in.
	(dbxout_reg_parms): Delete obsolete ifdefed out code.  Combine
	redundant PARM_PASSED_IN_MEMORY tests.  For case where parameter
	lives in memory, output stab if it doesn't live where it was passed.

	* sh.c: Correct typos and formatting problems.
	(add_constant, current_function_pretend_args_size,
	flag_traditional, table_lab): Delete unnecessary declarations.
	(sh_cpu): Change type from attr_cpu to processor_type.	
	(need_slot, output_shift, lshiftrt_insns, howshift,
	pop_operand): Delete.
	(print_operand, output_branch): Delete calls to need_slot.
	(synth_constant): Comment that it doesn't work.
	(output_movedouble): Handle PRE_DEC dest not POST_INC dest.
	(output_options): Don't use flag_traditional.
	(shift_insns): Correct numbers to optimal sequences.
	(shift_amounts): New table.
	(shift_insns_rtx): New function.
	(shiftinsns): Combine LSHIFTRT and ASHIFT cases.
	(shiftcosts): Return true costs of shifts instead of estimate of 1.
	(gen_ashift): Handle negative shift amounts.  Call gen_lshrsi3_m
	for single bit LSHIFTRT, and gen_lshrisi3_k for multiple bit shifts.
	(gen_shifty_op): Handle negative shift amounts at top.  Generate
	optimal sequences for ASHIFT and LSHIFTRT.
	(find_barrier): Correct pattern for matching mova instructions.
	(general_movsrc_operand): Delete redundant test for (MEM LABEL_REF).
	Don't reject POST_INC address for size > 4.
	(general_movdst_operand): Don't reject PRE_DEC address for size > 4.
	* sh.h: Correct typos and formatting problems.
	(MODE_DISP_OK_[12]): Delete.
	(GO_IF_LEGITIMATE_INDEX): Delete uses of MODE_DISP_OK_[12].
	(RTX_COSTS): Add LSHIFTRT.
	(table_lab): Delete declaration.
	(enum processor_type): New enum.
	(sh_cpu_attr): New macro.
	(sh_cpu): Change type to enum processor_type to avoid incomplete
	enum type.
	* sh.md: Correct typos and formatting problems.
	(cpu): Use sh_cpu_attr not sh_cpu.
	(adddi3, subdi3, udivsi3-1, divsi3-1, mulsi3_call-1, ashrsi2_16,
	ashrsi2_31, dect, casesi_worker): Use arith_reg_operand not
	register_operand.
	(ashlsi3_n, lshrsi3_n): Enable pattern.  Set length correctly.
	Use '#' to output it.
	(ashlsi3_n+1, lshrsi3_n+1): New patterns to split shifts.
	(ashlsi3, lshrsi3): Use shiftby_operand instead of gen_shifty_op.
	(lshlsi3_m): New pattern for single bit shifts.
	(lshlsi3_k): Only handle multiple bit shifts.	
	(negc): Use IOR not PLUS to set carry bit.
	(push+2, pop+2, movsi_pi, movdi-2, movdf_k-1, movsf_i-1): Delete.
	(movsi_i, movqi_i, movhi_i): Delete redundant < and > constraints.
	(movsf_i): Delete incorrect < and > constraints.

Fri Feb 24 13:07:55 1995  Stephen L Moshier  <[e-mail]>

	* i386/i386.md (sinxf2, cosxf2): Define.

Thu Feb 23 14:14:20 1995  Mike Stump  <[e-mail]>

	* rs6000.h/rs6000.h (RETURN_ADDR_RTX): Add definition to support
	__builtin_return_address and __builtin_frame_address on the
	rs6000.  This is necessary to support exception handling in g++ on
	the rs6000. 

Thu Feb 23 15:23:26 1995  Michael Meissner  <[e-mail]>

	* rs6000/rs6000.h (TARGET_SWITCHES): All -mpower switches set
	-mmultiple by default.  Rename -mno-fp-regs to -msoft-float and
	-mfp-regs to -mhard-float.
	(TARGET_NO_FPR): Rename all occurances of macro to be either
	TARGET_HARD_FLOAT or TARGET_SOFT_FLOAT.
	(FUNCTION_VALUE): If -msoft-float, floating point gets returned in
	register 3.
	(LIBCALL_VALUE): Ditto.
	(USE_FP_FOR_ARG_P): Don't use floating point registers if
	-msoft-float.
	(MOVE_MAX): Use TARGET_MUTIPLE instead of TARGET_POWER to decide
	to move 16 bytes at a time.
	(GO_IF_LEGITIMATE_ADDRESS): Don't allow index + base register
	addresses for DF's if -msoft-float.

	* rs6000/rs6000.c (POWER_MASKS): Or in MASK_MULTIPLE.
	(processor_target_table): Set MASK_MULTIPLE for Power CPUs and
	don't set it for PowerPC CPUs.
	(output_prolog): If -mrelocatable and a GOT pool is used, mark the link
	register as being live.  Load the GOT address via a bl instruction.
	(output_toc): If V.4 semantics, make the TOC label be the difference
	from the start of the TOC section, rather a label the assembler has to
	recognize as being an offset.

	* rs6000/rs6000.md (all floating point ops): For all operations,
	check if floating point is allowed.
	(movti): Use TARGET_MULTIPLE to decide whether to expand movti
	instead of TARGET_POWER.

	* rs6000/sysv4.h (SUBTARGET_SWITCHES): Move here from eabi.h, so the
	various macro overrides don't have to be recoded for eabi as well
	as System V.4.  Add -mstrict-align to set STRICT_ALIGNMENT to 1.
	Add -mrelocatable to specify that that the data/text sections may
	be copied elsewhere, but not true V.4 style PIC.
	(TOC_SECTION_FUNCTION): Handle TARGET_RELOCATABLE.
	(TOC_SECTION_ASM_OP): Put quotes around ".got".
	(MINIMAL_TOC_SECTION_ASM_OP): Put quotes around ".got1".

	* rs6000/eabi.h (SUBTARGET_SWITCHES): Move to rs6000/sysv4.h.
	(MINIMAL_TOC_SECTION_ASM_OP): Use ".got2" section if
	-mrelocatable.

	* rs6000/eabi.asm: New file to load up register 2 or relocate the .got2
	addresses.  Called from main.

	* rs6000/t-rs6000: Build two libgcc.a's, one for normal use, and one
	used when compiling with -msoft-float.

	* rs6000/t-eabi: New file, build two libgcc.a's, one for normal use,
	and one used when compiling with -msoft-float.  Add support for eabi
	module to relocate the .GOT2 section to support -mmultiple.

	* configure (powerpc-*-eabi*): Use t-eabi, not t-rs6000.

Thu Feb 23 06:58:46 1995  Richard Kenner  ([e-mail])

	* Makefile.in (ld): Add missing backslash to make continuation line.

	* i386/winnt.c (gen_stdcall_suffix): Deleted.
	* winnt/winnt.h (MODIFY_ASSEMBLER_NAME): Deleted.
	(VALID_MACHINE_DECL_ATTRIBUTES): Deleted.
	* varasm.c (make_decl_rtl): Remove reference to MODIFY_ASSEMBLER_NAME.

	* alpha.h (RTX_COSTS): Update costs for FP operations.

Thu Feb 23 00:13:05 1995  Jason Merrill  <[e-mail]>

        * c-typeck.c (build_binary_op): Warn if, in a comparison, a signed
        operand that might be negative is converted to unsigned.

Wed Feb 22 21:32:48 1995  Peter Schauer  ([e-mail])

	* config/svr4.h (DBX_OUTPUT_MAIN_SOURCE_FILE_END): New macro.

Wed Feb 22 20:29:31 1995  J.T. Conklin  <[e-mail]>

	* configure (*-*-netbsd*): Set tmake_file to t-libc-ok.

	* config/xm-netbsd.h, i386/xm-netbsd.h, m68k/xm-netbsd.h: New files.
	* sparc/xm-netbsd.h: New file.
	* ns32k/xm-netbsd.h: Changed to use config/xm-netbsd.h and
	ns32k/xm-ns32k.h.
	* configure (i386-*-netbsd*): Use i386/xm-netbsd.h.
	(m68k-*-netbsd*): Use m68k/xm-netbsd.h.
	(sparc-*-netbsd*): Use sparc/xm-netbsd.h.

	* cppp.c, collect2.c: Removed __NetBSD__ from conditional.
	* collect2.c: Declare strerror if HAVE_STRERROR is defined;
	otherwise declare sys_errlist and sys_nerr.

Wed Feb 22 19:07:08 1995  Niklas Hallqvist  ([e-mail])

	* Makefile.in (libgcc1.a): Run ranlib.

Wed Feb 22 18:46:50 1995  Yury Shevchuk  ([e-mail])

	* explow.c (memory_address): Add missing "else".

Wed Feb 22 15:29:58 1995  Jason Merrill  <[e-mail]>

        * collect2.c (libselect): New function for passing to scandir.
        (libcompare): Ditto.
        (locatelib): Use scandir to look for libraries with matching version
        numbers.

Wed Feb 22 18:27:14 1995  Paul Eggert  <[e-mail]>

	* cccp.c (enum sharp_token_type): New type.
	(stringify, raw_before, raw_after): Use this type instead of char.
	(collect_expansion, dump_single_macro): Keep track of white space
	after # and around ## tokens, since the C Standard requires a
	diagnostic if the white space doesn't match during a redefinition.
	(sharp_token, sharp_sharp_token): Labels renamed from hash_token and
	hash_hash_token for naming consistency.

Wed Feb 22 17:37:12 1995  Richard Kenner  ([e-mail])

	* gcc.c (SWITCH_TAKES_ARG): Add `x'.
	(process_command): -Wl, -Xlinker, and -lm values always go to
	linker even if -x was specified.

Wed Feb 22 09:33:36 1995  Jason Merrill  <[e-mail]>
     
        * fold-const.c (fold): Support folding CLEANUP_POINT_EXPRs into
        arithmetic expressions.

Wed Feb 22 08:40:30 1995  David Edelsohn  <[e-mail]>

	* rs6000.c (print_operand, case 'H', 'S'): Delete unused.