changelog.4

早期freebsd实现

	* cexp.y (yylex): Record the parsed characters when dealing with
	multibyte characters.

Mon Dec 30 17:13:30 1991  James Van Artsdalen  (james at bigtex.cactus.org)

	* i386.md (mulhi3,mulsi3): If a multiply by constant 128, use the
	two operand multiply instead of three operand form: the AT&T
	assemblers generate incorrect object code for the latter.

Mon Dec 30 17:39:36 1991  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* jump.c (jump_optimize): Complete last change: use expand_and result.

	* reload1.c (emit_reload_insns): Check if reload_in needs a secondary
	reload if we have an in-out reload, since it might have been the
	output the needed the secondary reload.

	* cse.c (simplify_unary_operation): Mode of integer CONST_DOUBLE is
	VOIDmode, not DImode.

	* fold-const.c (fold, case COND_EXPR): Make an ABS_EXPR when the
	comparison is LE_EXPR or LT_EXPR.

	* calls.c (calls_alloca): New function.
	(expand_call): Preexpand any argument that contains a call to alloca
	if this call will use the stack.

	* rs6000.h (DATA_SECTION_OP): Make result a string to avoid compilation
	error.

	* rs6000.h, sparc.h, sun2o4.h, sun3.h (WCHAR_TYPE_SIZE): Fix
	incorrect definition.

Mon Dec 30 16:10:46 1991  Michael Meissner  (meissner at osf.org)

	* mips.h (CC1_SPEC): Complete change deleting -mnogpopt and -mngpopt
	in favor of -mno-gpopt.

Mon Dec 30 11:32:05 1991  Michael Tiemann  (tiemann at cygnus.com)

	* cp-class.c (build_vtable): If we're doing #pragma interface
	and the interface is known, set TREE_PUBLIC, regardless of
	TREE_EXTERNAL settings.

	* cp-decl.c (make_temporary_for_reference): Don't call
	`convert_pointer_to', since the type may not be an aggr type.

	* cp-decl.c (finish_decl): Now takes 4th arg NEED_POP.
	All callers changed.

	* cp-class.c (permanent_obstack): Declare it.
	(add_method): push and pop obstacks before changing out of/into
	temporary allocation.
	* cp-decl.c (implicitly_declare): Add
	push_obstacks_nochange/pop_obstacks around changes out of/into
	temporary allocation.
	(shadow_tag,xref_tag,start_decl,finish_decl): Ditto.
	* cp-decl2.c (grokfield,get_temp_name): Ditto.
	* cp-except.c ({ansi_}lookup_exception_object): Ditto.
	* cp-lex.c (get_time_identifier): Ditto.
	* cp-tree.c (build_exception_variant): Ditto.
	* cp-typeck.c (mark_addressable): Ditto.

	* cp-decl.c (grokdeclarator,maybe_build_cleanup): Delete calls to
	preserve allocation status.  Now handled by callers.

Mon Dec 30 01:44:21 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* c-lex.c (yyprint): Function moved here.
	* c-parse.y, objc-parse.y: Moved from here.

	* Makefile.in (c-parse.c, objc-parse.c, cp-tab.c, cexp.c):
	cd to srcdir to run Bison.

	* c-lex.c (check_newline): Get rid of #ident pedantic warning.
	* cccp.c (do_ident): Put it here.
	Don't warn if in system header file.

	* cccp.c (main, finclude): Warn if file ends in backslash-newline.

	* next.h (WCHAR_TYPE, WCHAR_TYPE_SIZE): New definitions.

	* global-alloc.c (find_reg): Kick out local regs if that helps.
	(global_alloc): Set up vars local_regs_live_length, local_regs_n_refs.

	* protoize.c (do_processing): Fix setting syscalls_absolute_filename.

	* configure (m68k-*-sysv4*, m68k-*-amix*): New alternatives.
	* config.sub (*-commodore): Default OS to Amigados.
	(-amix*): Allow this as input.
	(amiga): New abbreviation.

	* sparc.c (output_function_epilogue): Skip unimp differently in leaf.
	Use jmp insn rather than separate add.
	(output_return): Skip unimp here too.
	* sparc.md (return "peepholes"). Handle skipping the unimp.

	* fold-const.c (fold, optimizing 2*EXPR): Use save_expr.

	* varasm.c (make_decl_rtl): Permit initializer for local explicit reg.

	* c-decl.c (kept_level_p):  Changed to also return TRUE for binding
	levels which contain only tagged type declarations.

	* calls.c (expand_call): Cleaned up prev change.

Mon Dec 30 11:29:47 1991  Michael Tiemann  (tiemann at mole.gnu.ai.mit.edu)

	* cp-lex.c (real_yylex): Call REAL_VALUE_TRUNCATE with 2 args.

	* calls.c (expand_call): Handle allocating ARGBLOCK in the case
	that ACCUMULATE_OUTGOING_ARGS is not defined.

Mon Dec 30 10:27:11 1991  James Van Artsdalen  (james at bigtex.cactus.org)

	* protoize.c: fix typo in <sys/wait.h> inclusion.

Mon Dec 30 06:16:16 1991  Leonard Norrgard  (vinsci at nic.funet.fi)

	* c-decl.c (grokdeclarator): Changed erroneus error message.

Sun Dec 29 16:16:55 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* toplev.c (main): Last -On option wins.
	* Makefile.in (ENQUIRE_CFLAGS): Add -O0.

	* Makefile.in (cp-tab.c): Change "expect" message.

	* final.c (leaf_renumber_regs): Renumber just the PATTERN.

Sun Dec 29 14:20:15 1991  Per Bothner  (bothner at cygnus.com)

	* dbxout.c (dbxout_type): Tiemann's DECL_IGNORED_P optimization (Nov
	20) was a little too drastic: If it succeded, no type info was
	emitted at all, which made for syntactically invalid stabs.
	Instead, just set 'full=0',
	* dbxout.c (dbxout_symbol): Re-write code for TYPE_DECL to be a
	little cleaner.  It *seems* to work ...

Sun Dec 29 07:04:22 1991  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* expr.c (convert_move): Add truncates from DImode to smaller modes.
	(move_by_pieces, move_by_pieces_ninsns): Rework to remove explicit
	references to integer modes.
	Never need to align greater than BIGGEST_ALIGNMENT.

	* optabs.c (init_extends, init_fixtab, init_floattab, init_optabs):
	Add TImode operations.

	* reload.c (find_reloads): Prefer alternatives that reload SCRATCH
	instead of something else.

	* rs6000.md (movti): Adjust constraints and alternative order so
	we actually get to use the  stsi insn.

	* rs6000.h (REG_ALLOC_ORDER): Put r9 in front of r11 so we don't try to
	put a TImode value in r11 as often.

	* caller-save.c (setup_save_areas): New parameter pchanged; set when
	memory is allocated.
	* reload1.c (reload): Pass pointer to something_changed to
	setup_save_areas.

	* loop.c (scan_loop): Don't suppress moving insns that can trap just
	because we have passed a call inside a libcall/retval block.

	* jump.c (get_label_before): Don't separate a CALL_INSN from any USE
	insns immediately preceeding it.
	(get_label_after): Likewise, for following CLOBBERs.

	* cse.c (fold_rtx, case '<'): When seeing if we have seen this
	comparison before, use a constant equivalence.
	Add test for things like "(a | 1) != 0".
	(fold_rtx, case '2'): Move code to handle associative operations to
	here; add support for MINUS, SMAX, SMIN, UMAX, and UMIN.
	(record_jump_equiv): See if OP1 is equivalent to a constant.

	* jump.c (jump_optimize): Don't pass a SUBREG as a target to
	expand_and.

	* combine.c (subst): Never associate floating-point, even if not IEEE.
	Associate MAX and MIN operations.

	* output.h (output_asm_insn, asm_fprintf): Add "extern" to decls.
	(alter_subreg): Add declaration.
	* rs6000.md (movsf, movdf): Don't declare alter_subreg here.
	(trunc_call_rtl): Don't declare trunc_used; use rs6000_trunc_used.
	* rs6000.c (rs6000_trunc_used): New name of trunc_used.
	* rs6000.h (rs6000_trunc_used): Add declaration.

Sat Dec 28 18:14:21 1991  Michael Tiemann  (tiemann at cygnus.com)

	* cp-method.c (build_overload_name): Don't call OB_FINISH unless END
	is nonzero.

Sat Dec 28 17:46:05 1991  Jim Wilson  (wilson at wookumz.gnu.ai.mit.edu)

	* gcc.c (default_compilers): Handle -ansi in the C++ entries
	exactly the same way as the C entries do.

	* rtl.c (add_dependence): Cast enums to int before doing an
	ordered comparison, since some compilers can't do this.

	* sparc.c (pic_address_needs_scratch): New function.  Returns
	true if the pic address X needs a scratch register when loaded.
	(legitimize_pic_address): Clean up.  New argument SCRATCH, which
	is a scratch register for those loads that need it.
	(emit_move_sequence): New argument SCRATCH_REG, which is a scratch
	register for those loads that need it.  When loading a pic label,
	set %o7 instead of clobbering it so its value can be used later.
	(compute_frame_size): Leaf functions need to allocate space for
	register window in frame if size greater than 0.
	(print_operand): Delete obsolete %^ which added %o7 to addresses.
	All uses of %o7 are now explicit.
	* sparc.h: Fix callers of legitimize_pic_address.
	(REG_CLASS_FROM_LETTER): Add 'r' case.
	(SECONDARY_INPUT_RELOAD_CLASS): New macro, to force reload to
	allocate a scratch register for certain pic address reloads.
	(flag_pic): Define as extern so that it will be defined for
	insn-emit.c.
	* sparc.md: Fix all callers of legitimize_pic_address and
	emit_move_sequence.
	(reload_insi): New pattern.  Used to force reload to allocate a
	scratch register for those pic address loads that need one.
	(reload_insi+2): When loading pic label, set %o7 instead of
	clobbering it.
	(movdf, movsf): Reject matches that would require reloading via
	use of a condition.
	(tablejump): Now a define_expand, so can generate different
	pattern when pic.
	(pic_tablejump): Explicitly mention in rtl that %o7 is used,
	instead of using %^.

	* m88k.h, sparc.h: Delete references to non-existent
	BLOCK_PROFILER_USED_REG_P macro.

Sat Dec 28 14:31:36 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)

	* c-lex.c (check_newline): Set ignore_escape_flag for reading filename.
	(yylex): Handle ignore_escape_flag in string constant.

	* gnulib2.c (__do_global_dtors): Count elements properly.

	* m68k.md (tsthi): Don't allow address register.

Sat Dec 28 11:49:06 1991  James Van Artsdalen  (james at bigtex.cactus.org)

	* final.c (final): Initialize elements of line_note_exists.

	* protoize.c: Don't include <sys/wait.h> on USG unless SVR4.

Sat Dec 28 11:09:36 1991  Fred Fish  (fnf at fishpond)

	* Makefile.in (includes): Pre-remove the tmp dir; fix INSTALLED_H ref.

Sat Dec 28 06:31:16 1991  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* sparc.md (movstrsi): Fix typo testing for more than 32 subunits.

	* genrecog.c: Major rework.
	We now check to see if pairs of comparison nodes can have anything
	that they both match.  If not, they can be reordered.  An efficient
	ordering is established that groups all nodes with identical rtl
	codes inside groups with identical modes.  This allows us to generate
	a comparison tree that is a list of nested switch statements.
	Also, genrecog.c is now indented properly so that debugging is eased.
	(add_to_sequence): Enforce mode on the first arg of COMPARE, comparison
	operation, SIGN_EXTEND, and ZERO_EXTEND.

	* a29k.h, romp.h, rs6000.h (PREDICATE_CODES): Add definition.

Fri Dec 27 17:31:48 1991  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* a29k.h, decrose.h, encrose.h, m88kdgux.h (WCHAR_TYPE_SIZE):
	Add definition.
	* rs6000.h, sparc.h, sun2o4.h, sun3.h, svr3.h, svr4.h: Likewise.

	* expmed.c (expand_mult): For negative values, try multiplication by
	the original value as well as by negated value.

Fri Dec 27 20:54:59 1991  Fred Fish  (fnf at fishpond)

	* m68kv4.h:  Include m68ksgs.h rather than m68k.h.

	* m68kv4.h:  Define TARGET_DEFAULT to be 68020 + 68881.
	(CPP_SPEC): Define based on TARGET_DEFAULT

	* m68kv4.h (PCC_STATIC_STRUCT_RETURN): Undef this.
	(CTORS_SECTION_ASM_OP, DTORS_SECTION_ASM_OP): Defs deleted.
	(ASCII_DATA_ASM_OP, ASM_OUTPUT_ASCII): Defs deleted.

	* m68kv4.h (ASM_OUTPUT_SKIP, FUNCTION_VALUE_REGNO_P):
	(FUNCTION_PROFILER, STRUCT_VALUE_REGNUM, BSS_ASM_OP):
	(FUNCTION_VALUE, FUNCTION_EXTRA_EPILOGUE, LIBCALL_VALUE):
	(STACK_BOUNDARY, EMPTY_FIELD_BOUNDARY, BIGGEST_ALIGNMENT):
	Redefined to match m68k/SVR4 conventions.

	* m68ksgs.h (ASM_OUTPUT_SKIP): Redefined to use `.space'.
	(ASM_NO_SKIP_IN_TEXT): Defined.

	* amix.h, xm-amix.h, x-amix: New files.

Fri Dec 27 20:43:11 1991  Michael Tiemann  (tiemann at cygnus.com)

	* cp-tree.h (build_overload_name): Declare this function.
	* cp-decl2.c, cp-method.c: Delete random `extern' declarations.

	* cp-lex.c (get_directive_line): Declare it extern.
	(lineno,yychar,yylval,lastiddecl,finput): Ditto.
	(ridpointers): Don't need to declare it here.
	(check_newline): Handle new #pragmas.

	* cp-class.c (add_method): Add a cast in call to `obstack_base'.

Fri Dec 27 20:22:05 1991  Michael Tiemann  (tiemann at cygnus.com)

	* cp-decl.c (push_overloaded_decl): Now returns a value.
	All callers changed.

	* cp-decl.c (duplicate_decls): Give better error message when user
	declaration conflicts with built-in one.  Also, when we decide to
	keep a builtin function builtin, copy the DECL_RTL from OLDDECL to
	NEWDECL.

Fri Dec 27 17:18:15 1991  Michael Meissner  (meissner at osf.org)

	* mips.h (TRAMPOLINE_TEMPLATE): Define correctly for MIPS.
	(TRAMPOLINE_SIZE): Define to be 9 words.
	(INITIALIZE_TRAMPOLINE): Define correctly for MIPS.
	(TRANSFER_FROM_TRAMPOLINE): Define to do a mprotect of the
	trampoline, so that we can jump to it.  I suspect the mprotect may
	fail on some MIPS based systems, because the trampoline is on the
	stack, and not in the data section.

	* mips.c (mips_output_filename): Don't warn about ECOFF not
	handling #line's within functions if we are using the OSF/rose
	object format.

Fri Dec 27 15:35:38 1991  Richard Stallman  (rms at mole.gnu.ai.mit.edu)