changelog.9

GUN开源阻止下的编译器GCC

	TARGET_SINGLE_FLOAT, permit only small floating point modes in
	floating point registers.  Always permit SImode modes in HI/LO
	registers.
	(compute_frame_size): If TARGET_SINGLE_FLOAT, only save 4 bytes
	per floating point register.  Align the floating point register
	save space to an eight byte boundary.
	(save_restore_insns): If TARGET_SINGLE_FLOAT, save floating point
	regisers in single precision.
	(mips_secondary_reload_class): New function.
	* config/mips/mips.md: Require TARGET_DOUBLE_FLOAT for all double
	precision floating point insns.  Change the multiplication insns
	to be single instructions which set a register of class l or h or
	x, as appropriate, rather than explicitly setting HI and/or LO.
	Use define_expand to avoid generating a shift near a multiply on
	the r4000.  Use match_scratch in the division insns to clobber HI
	and LO, rather than mentioning them explicitly.  Add support for
	r4650 mad and madu insns.
	* config/mips/t-ecoff (MULTILIB_OPTIONS): Add mips1/mips3.
	(MULTILIB_DIRNAMES): Add mips1 mips3.

Wed Jan 18 07:43:53 1995  Richard Kenner  ([e-mail])

	* tree.c (stabilize_reference): Fix typo in last change.
	* expr.c (get_inner_reference): Don't ignore CONVERT_EXPR from
	non-UNION_TYPE to UNION_TYPE.
	(expand_expr, case CONVERT_EXPR): Check for conversion to union
	before checking for not changing mode.

Tue Jan 17 22:33:27 1995  Richard Kenner  ([e-mail])

	* tree.c (stabilize_reference, case RTL_EXPR): New case.

Tue Jan 17 18:42:44 1995  Jeffrey A. Law  ([e-mail])

	* pa.c (emit_move_sequence): Also handle displacements which
	do not fit in 14 bits for fp load/store secondary reloads.

Tue Jan 17 13:34:22 1995  Jason Merrill  <[e-mail]>

        Avoid bogus errors for C++ lvalues.
        * c-decl.c (init_decl_processing): Set pedantic_lvalues to pedantic.
        * fold-const.c (pedantic_non_lvalue): Only force a non-lvalue if
        pedantic_lvalues is set.
        * tree.h: Declare pedantic_lvalues.

        Generalize shared truthvalue code to allow for C++ bool.
        * c-tree.h: Declare boolean_{type,true,false}_node.
        * c-decl.c (init_decl_processing): Set up
        boolean_{type,true,false}_node to equal
        integer_{type,one,zero}_node.
        * c-common.c (truthvalue_conversion): Use
        boolean_{type,true,false}_node instead of
        integer_{type,one,zero}_node.
        (shorten_compare): Ditto.

Mon Jan 16 07:11:50 1995  Paul Eggert  <[e-mail]>
 
	* cccp.c (rescan): Fix typo that caused tokens to be glued
	together improperly.

Sun Jan 15 21:00:24 1995  Doug Evans  ([e-mail])

	* configure (vintmsg): Delete.

Sat Jan 14 17:50:06 1995  Richard Kenner  ([e-mail])

	* expr.c (get_inner_reference): Only treat offset of PLUS_EXPR
	as special if second arg is integer constant.

Sat Jan 14 01:28:15 1995  Doug Evans  ([e-mail])

	* expmed.c (extract_bit_field, fields bigger than word case): Count
	subwords in target.  Zero remaining upper bits if unsigned.

	* c-common.c (decl_attributes): Fix typo in packed ignored warning.
	Fix unrecognized mode warning.  Make string comparisons consistent.
	Support machine attributes with arguments.  Make noreturn/volatile
	warnings consistent with others.

	* a29k.h (INIT_CUMULATIVE_INCOMING_ARGS): Reserve two regs for
	caller's lr0,lr1.
	* a29k.c (incoming_reg): Keep regstack aligned to even boundary.

Fri Jan 13 20:29:30 1995  Philippe De Muyter ([e-mail])

	* sdbout.c (plain_type_1): For LONG_LONG_TYPE_SIZE, return T_[U]LONG
	instead of 0 (i.e. T_VOID).

	* optabs.c (expand_binop): Do not force constant shift-count to
	a register, to allow possible widening; do not convert_to_mode
	mode{1,2} or copy_to_mode_reg if mode{1,2} is VOIDmode.
	* m68k.md (zero_extendsidi2): New pattern.
	(extendqidi2, extendhidi2, extendsidi2, extendplussidi): New patterns.
	(adddia_sexthishl32, adddid_sexthishl32): New patterns.
	(adddi_dilshr32, adddi_dishl32, adddi_mem): New patterns.
	(adddi3, subdi3): Allow more alternatives.
	(subdia_sexthishl32, subdid_sexthishl32): New patterns.
	(subdi_dishl32, subdi_mem): New patterns.
	(negdi2): New pattern.
	(ashldi_sexthi, ashldi_const32, ashldi_const, ashldi3): New patterns.
	(subreg1ashrdi_const32, ashrdi_const32): New patterns.
	(ashrdi_const32_mem, ashrdi_const, ashrdi3): New patterns.
	(subreg1lshrdi_const32, lshrdi_const32, lshrdi_const, lshrdi3): Ditto.
	(lshrsi_31): New pattern.
	(lshrsi_16, lshrsi_17_24): New names for old unnamed patterns.

	* m68k.c (use_movqi, const_method): New functions.
	(const_int_cost, output_move_const_into_data_reg): Likewise.
	(singlemove_string): Call output_move_const_into_data_reg.
	* m68k.md (fullword move): Likewise.
	* m68k.h (CONST_COSTS): Call const_int_cost.

Fri Jan 13 20:17:55 1995  Oliver Kellogg  ([e-mail])

	* 1750a.h, 1750a.c: Remove use of function prototypes.

Fri Jan 13 15:53:33 1995  Jason Merrill  <[e-mail]>

        * tree.h (DECL_STATIC_CONSTRUCTOR): New macro.
        (DECL_STATIC_DESTRUCTOR): New macro.
        (tree_decl): Add static_ctor_flag and static_dtor_flag.

        * objc-act.c (finish_file): Renamed from objc_finish.

        * c-parse.in (program): Call finish_file.

        * c-decl.c (duplicate_decls): Propagate DECL_STATIC_{CON,DE}STRUCTOR.
        (finish_function): Handle DECL_STATIC_{CON,DE}STRUCTOR.

        * c-lang.c (finish_file): New function to emit code for calling
        static constructor and destructor functions as necessary.

        * c-common.c (decl_attributes): Support __attribute__s
        "constructor" and "destructor".

Fri Jan 13 19:38:08 1995  Paul Eggert  <[e-mail]>

	* gcc.c (execute): Don't wait for just any N subprocesses,
	since we may have started with some subprocesses before we
	started executing.  Wait just for _our_ N subprocesses.

Fri Jan 13 18:08:17 1995  John F Carr  <[e-mail]>

	* gencodes.c, genemit.c, genflags.c (gen_insn):  Ignore insns whose
	names begin with '*'.
	* genoutput.c (output_epilogue): Do not reference gen_ functions for
	insns whose names begin with '*'.

Fri Jan 13 17:54:42 1995  Wolfgang Formann  ([e-mail])

	* i386/isc.h (ASM_FILE_START): New macro.

Fri Jan 13 15:01:59 1995  Richard Kenner  ([e-mail])

	* c-parse.in (unary_expr): If -pedantic, give error for &&.

	* fold-const.c (fold, case COND_EXPR): Properly swap args 1 and 2.
	Strip nops from ARG2, just like ARG1.
	Make {MIN,MAX}_EXPR properly when type of result different than args.
	
	* function.c (optimize_bit_field): Don't remove a SUBREG that
	changes mode class.

	* Makefile.in (stmp-multilib*): Pass CC and CFLAGS to recursive make.

	* alpha/osf12.h (LINK_SPEC): Add missing "\".

Thu Jan 12 13:37:13 1995  Jim Wilson  <[e-mail]>

	* i960/t-* (LIBGCC1, CROSS_LIBGCC1): Define to empty instead of
	to libgcc1.null.
	* mips/t-*, sparc/t-*: Likewise.

Thu Jan 12 08:13:55 1995  Steve Chamberlain  ([e-mail])

	* libgcc2.c (__lshldi3, __lshrdi3,  __ashldi3, __ashrdi3):
	Shift count comes as a word, not as an SI.  Keep temporary in
	a word.
	(__moddi3, __divdi3): Make negate flag `c' have word_type for
	efficiency.

Thu Jan 12 07:18:09 1995  Stephen L Moshier  ([e-mail])

	* real.c (toe64):  Use Intel bit pattern for little-endian XFmode Inf.
	(e64toe): Likewise; also check the exponent field properly.

Wed Jan 11 14:24:55 1995  Jason Merrill  <[e-mail]>

        * toplev.c (lang_options): Add -f{no-,}gnu-keywords, 
        -f{no-,}operator-names.

Tue Jan 10 19:16:07 1995  David Edelsohn  <[e-mail]>

	* rs6000.h (REGISTER_MOVE_COST): Add LINK_OR_CTR_REGS class to
	expensive moves.

Tue Jan 10 19:07:36 1995  Jonathan Beimel  ([e-mail])

	* combine.c (simplify_if_then_else): Fix typo: "|" should be "||".

Tue Jan 10 05:49:25 1995  Richard Kenner  ([e-mail])

	* fold-const.c (fold): Avoid infinite recursion caused by last change.

Mon Jan  9 17:08:56 1995  Michael Meissner  ([e-mail])

	* configure: All AIX versions [456789].* use the AIX 4.1 support.

Mon Jan  9 13:21:07 1995  David Edelsohn  <[e-mail]>

	* rs6000/aix41ppc.h: New file.

	* configure (powerpc-ibm-aix4.1*): Add support AIX version 4.1 on
	the powerpc.

Sat Jan  7 08:51:29 1995  Richard Kenner  ([e-mail])

	* sparc.c (order_regs_for_local_alloc): Add casts to bcopy call.
	(print_operand, case 'f'): New case.
	(sparc_initialize_trampoline): Use gen_flush instead of knowing
	what pattern looks like.
	Use MEM instead of address in flush insn, so virtual reg
	instantiation can update.
	Ensure address in flush insn is valid.
	* sparc.md (flush): Change to using a MEM instead of address.

	* reorg.c (dbr_schedule): Add missing casts in bzero call.

	* fold-const.c (fold, case CONVERT_EXPR): Don't remove an
	integer conversion when outer is FP unless it doesn't change
	signedness; rework code in this area to be clearer.

Sat Jan  7 02:58:21 1995  Jeffrey A. Law  ([e-mail])

	* pa.h (enum processor_type): New enumeration describing the
	processor to schedule for (700, 7100, 7100LC).
	(pa_cpu_attr, TARGET_OPTIONS, OVERRIDE_OPTIONS): Define.
	(pa_cpu_string, pa_cpu): Provide extern decls.
	* pa.c (pa_cpu, pa_cpu_string): Provide definitions.
	(override_options): New function.
	(pa_adjust_cost): Handle PROCESSOR_7100 and PROCESSOR_7100LC
	scheduling.  Handle anti-dependendy cases involving fp division
	and sqrt.  Handle output dependencies correctly.  Break TYPE_FPMUL
	into TYPE_FPMULSGL and TYPE_FPMULDBL.
	* pa.md (cpu attribute): New attribute.
	Clean up comments for PROCESSOR_700 scheduling info.  Slightly
	simplify.  Make conditional on PROCESSOR_700.
	Add comments and scheduling information for PROCESSOR_7100 and
	PROCESSOR_7100LC.  Set types for instructions which use the shifter
	to "shift".  Explicitly set lengths and types for all instructions.
	Break type "fpmul" into "fmulsgl" and "fpmuldbl".

Fri Jan  6 17:50:48 1995  Jim Wilson  <[e-mail]>

	* sh/sh.h (DO_GLOBAL_CTORS_BODY): Run constructors from right to
	left not left to right.
	* h8300/h8300.h: Likewise.

Thu Jan  5 12:37:26 1995  Doug Evans  <[e-mail]>

	* loop.c (get_condition): Use CONST0_RTX instead of const0_rtx.

Wed Jan  4 04:26:23 1995  Jeffrey A. Law  ([e-mail])

	* pa.md (call expander): Use emit_insn_before to emit an insn to
	save the PIC register before a function call.
	(call_value expander): Likewise.

Tue Jan  3 15:23:49 1995  Jim Wilson  <[e-mail]>

	* va-mips.h (va_arg, mips3 case): Use __PTRDIFF_TYPE__ not int in
	casts.

	* c-decl.c (duplicate_decls): Push to correct obstack before
	creating new function types.

Fri Dec 30 16:12:52 1994  Ian Lance Taylor  <[e-mail]>

	* fixinc.svr4: Remove special patch for <netinet/in.h>.

Fri Dec 30 08:00:53 1994  Richard Kenner  ([e-mail])

	* varasm.c: Include output.h.
	Add prototyes for all static functions; remove forward declarations
	of non-static functions.
	(assemble_variable): Add missing arg decl.
	(bc_make_decl_rtl, const_hash, const_hash_rtx): Now static.
	(output_addressed_constants, output_constructor): Likewise.
	(bc_output_constructor): Add missing argument.
	(output_byte_asm): Delete, unused.
	* output.h: Add decls of functions in varasm.c.
	Allow to be included when rtl.h is not.
	* function.h ({save_restore}_varasm_status): Add decls.
	* c-decl.c, c-typeck.c, toplev.c: Include output.h.
	* Makefie.in (c-decl.o, c-typeck.o, toplev.o, varasm.o): Likewise.

Thu Dec 29 21:48:03 1994  Jeffrey A. Law  ([e-mail])

	* calls.c (expand_call): Set MEM_IN_STRUCT_P as needed on return
	value from assign_stack_temp.
	(store_one_arg): Likewise.
	* expr.c (save_noncopied_parts): Likewise.
	(expand_expr): Likewise.
	* function.c (assign_parms): Likewise.
	* integrate.c (expand_inline_function): Likewise.
	* stmt.c (expand_decl): Likewise.

Thu Dec 29 14:06:34 1994  Jim Wilson  <[e-mail]>

	* cse.c (simplify_unary_operation): Cast constant 1 to HOST_WIDE_INT
	before shifting left to form mask.
	* gcc.c (print_multilib_info): Initialize last_path_len to 0.
	* varasm.c (output_constructor): Change type of variable value to
	HOST_WIDE_INT.

	* expmed.c (expand_mult_highpart): Use convert_modes instead of
	gen_lowpart to do conversions.

Thu Dec 29 13:42:08 1994  Mike Stump  <[e-mail]>

	* toplev.c (lang_options): Add -frtti flag for rtti support in C++.

Wed Dec 28 22:04:42 1994  Jeffrey A. Law  ([e-mail])

	* config/pa/lib2funcs.asm: New file.
	* config/pa/t-pa (LIB2FUNCS_EXTRA): Define.
	* config/pa/pa.h (DO_GLOBAL_DTORS_BODY): Define.  Include a
	reference to __gcc_plt_call so __gcc_plt_call always appears in
	executables which reference __main.

Wed Dec 28 21:18:26 1994