changelog.2

早期freebsd实现

Thu Jan 31 00:33:33 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* loop.c (scan_loop): Check each libcall for regs it uses
	but does not mention in the equivalent value.
	To move the libcall, we must have at most one such reg
	and it must be moved as well.
	(libcall_other_reg): New subroutine.
	* rtlanal.c (record_excess_regs): New function.

	* tree.c (gcc_obstack_init): New function.
	(init_obstacks, save_tree_context): Use that.
	(OBSTACK_CHUNK_SIZE): New parameter.
	* xm-next.h: New file.
	* configure (m68k/next): Use that file.

	* flags.h (flag_no_common): Declare new flag to treat external defs
	as ANSI specifies (i.e. not as common).
	* toplev.c (flag_no_common, f_options): Support -fno-common.
	* varasm.c (assemble_variable): Don't output a common if
	flag_no_common is set.	Treat as if initialized to 0.

	* gcc.c (default_compilers): Define __ASSEMBLER__ for .S file.

	* tm-aix386.h (ASM_OUTPUT_LOCAL): Ok to use bss, since no shared libs.
	(LINK_SPEC): Pass through all -K and -T options.
	* xm-aix386.h (TRUE, FALSE): Undef if already def, to avoid warning.

	* tm-m68k.h (TARGET_68040, TARGET_68040_ONLY): New machine flags.
	(TARGET_SWITCHES): Alternatives to set them.
	* tm-next.h (TARGET_DEFAULT): Changed to 0407 for 68040.

	* out-m68k.h (standard_68881_constant_p):  Always return 0
	for TARGET_68040 since fmovecr is no longer implemented in hardware.

	* m68k.md (ftruncdf2, ftruncsf2): Don't emit fintrz for
	TARGET_68040, since it is no longer implemented in hardware.
	(muldf3): Don't use fscale on 68040, since not implemented in hardware.

	* toplev.c (optimize): Now stores specified optimization level.
	(main): Keep the largest optimization level specified.
	Handle any integer.

	* c-decl.c (pushdecl): Don't make an extern global for -traditional
	if it uses any local types.

	* tm-sun386i.h (PCC_BITFFIELD_TYPE_MATTERS): Use 1 as value.

Wed Jan 30 12:41:15 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* fixincludes (sys/systypes.h): Edit this to handle _SIZE_T, etc.

	* function.c (put_var_into_stack): Allocate var ref chain link
	while in the proper function's obstack.

	* fold-const.c (const_binop): Don't crash for real/0 if have infinity.

	* flow.c (mark_set_1): Don't make log link for hard reg in asm insn.

Wed Jan 30 07:45:33 1991  Tom Wood  (wood at dg-rtp.dg.com)

	* sched.c (schedule_block): Indicate what insns constitute each
	basic block.

Tue Jan 29 12:35:42 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* Makefile.in (gnulib1.*, gnulib2.*): Declare them phony targets.

	* print-tree.c (print_node): Print message if TREE_PERMANENT is wrong.
	* tree.c (object_permanent_p): New function.

	* print-tree.c (print_node): Remove DECL_LANG_FLAG_10.

Tue Jan 29 10:07:48 1991  Tom Wood  (wood at dg-rtp.dg.com)

	* m88k.md (minus/xor/and, neg/ne/compare/and): Delete these.  This
	should be done by combine.
	(compare operator): Eliminate except when a SET_SRC.
	* tm-m88k.h (OPTIMIZATION_OPTIONS): -fomit-frame-pointer is a
	default optimization.

Mon Jan 28 12:52:11 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* tree.h (DECL_VIRTUAL_P): Renamed from TREE_VIRTUAL.
	(struct tree_common): Eliminate virtual_flag.
	(struct tree_decl): Add virtual_flag.

	* Makefile.in (enquire.o): Pass -DNO_STDDEF.

	* m68k.md (tablejump): Now have a define_expand that does
	different things depending on CASE_VECTOR_PC_RELATIVE,
	and a separate define_insn for each case.

	* function.h (outer_function_chain): Declare the variable.

	* tree.c (debug_obstack): Fix typos.
	* tree.h (struct tree_common): Fix typo.

	* Makefile.in (GNULIB1_TARGET, GNULIB2_TARGET): Variables deleted.
	(gnulib): Depend on gnulib1.target and gnulib2.target explicitly.

	* dbxout.c (dbxout_type): Use DECL_VIRTUAL_P, not TREE_VIRTUAL.

	* cplus-tree.h (TREE_PRIVATE, TREE_PROTECTED): #if 0.

	* cexp.y (keywords): Cast names for parens to U_CHAR *.

	* gcc.c (process_command): Fix typo setting switches[n_switches].arg.

	* loop.c (loop_reg_used_before_p): Check insns before INSN, not after.

	* objc-actions.c (objc_finish): Renamed from lang_finish.
	* objc-parse.y (program): Call objc_finish at the end.

	* Changes from Matthew Self ([e-mail]):

	* objc-parse.y:	 Since objc-parse.y was so out of date with
	respect to c-parse.y, I started over with c-parse.y and
	reintegrated the Objective-C modifications.  Now that
	Objective-C is working I hope that objc-parse.y will be kept
	more up to date....  I did not re-integrate the lexer since I
	don't have gperf working.  I simply cut and pasted what
	Stallman had in objc-parse.y.  Someone with access to gperf
	should re-generate this stuff.

	* objc-actions.c (comp_method_with_proto,
	comp_proto_with_proto):	 Stallman's change to use the
	functions end_temporary_allocation and
	resume_temporary_allocation is incorrect, since it always
	leaves allocation temporary, whether it was before or not. 

	Perhaps the push and pop functions would do the trick....

	* objc-actions.c (get_arg_type_list):  Use new function
	groktypename_in_parm_context.

	* objc-actions.c (_OBJC_SELECTOR_REFERENCES_decl,
	_OBJC_SELECTOR_REFERENCES_id):	Removed.

	* objc-actions.c (synth_module_prologue):  Eliminated code to
	forward declare the selector references array.

	* objc-actions.c (init_objc_symtab):  Eliminated code to
	initialize "refs" field in objc_symtab structure (which is
	now vestigial).

	* objc-actions.c (build_selector_translation_table): Rewrote.

	* objc-actions.c (build_selector_reference):  New routine.

	* objc-actions.c (build_message_expr, build_selector_expr):
	Use new routine.

	* config/tm-next.h (GO_IF_INDEXABLE_BASE):  Don't use pc
	relative addressing for LABEL_REF's.  Since branch tables are
	in the const section, we treat LABEL_REF's like SYMBOL_REF's
	here.  Otherwise invalid addresses were being generated.

	* config/tm-next.h (CASE_VECTOR_PC_RELATIVE, CASE_VECTOR_MODE):
	Use absolute branch tables rather than relative ones.

	* config/tm-next.h (ASM_OUTPUT_MAIN_SOURCE_FILE_END):  Output
	an N_SO symbol with no name to mark the end of the module.
	This is needed to support scattered loading on the NeXT.

	* config/out-next.c (handle_pragma):  Call to xrealloc had wrong args.

	* configure: Entry for NeXT must set out_file to out-next.c.

	* config/out-next.c:  Typo: "flags" -> "flags.h"

	* config/tm-next.h (LIB_SPEC):	Brought up-to-date.  There
	are probably more changes needed here.

	* c-decl.c (pushdecl_top_level):  New function.	 This was
	copied from an older version of g++.

	* c-decl.c (init_decl_processing): Make alloca first arg sizetype.

	* c-decl.c (groktypename_in_parm_context): New function.

Mon Jan 28 07:07:01 1991  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* loop.c (loop_reg_used_before_p): Don't use INSN_LUID since INSN
	might have been made by loop.c for an outer loop.

	* loop.c (move_movables, strength_reduce): Replace register references
	in REG_NOTES as well as PATTERN.

	* loop.c (strength_reduce): Call maybe_eliminate_biv twice, not 
	three times.
	(maybe_eliminate_biv): Don't abort if elimination fails even though
	we thought it wouldn't.	 This can happen if certain insn patterns 
	aren't valid.
	(maybe_eliminate_biv_1): Ensure that we do not change the insn at
	all if all the required changes can't be done.

Sun Jan 27 21:26:29 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* Makefile.in: Rename config-dir back to config.

Sat Jan 26 17:48:22 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* objc-parse.y (program): Call objc_finish.
	* objc-actions.c (objc_finish): Renamed from lang_finish.

	* objc-actions.c, objc-parse.y: New version from NeXT.

Sat Jan 26 17:37:48 1991  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* expr.c (expand_expr, case COND_EXPR): Disable special-case of
	A ? B : C when B and C are simple.  This is now done better by jump.

Sat Jan 26 13:16:58 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* tree.h (TREE_PRIVATE, TREE_PROTECTED, TREE_VIRTUAL): New macros.
	(struct tree_common): New flag fields.
	* dbxout.c (dbxout_type): Get rid of conditional; can always use these.

	* cccp.c (lookup_import): Do return -2 if file found.
	(main): Handle `.m' suffix like `.S'.

	* configure (m68k/next): Use out-next.c.

	* WORD_SWITCH_TAKES_ARG and SWITCH_TAKES_ARG now give # of args.
	* gcc.c (struct switchstr): New field `args' replaces `part2'.
	(process_command): Record all the args a switch has.
	(give_switch): Pass all the strings in `args'.

	* tree.h (struct tree_common): Normally make `code' an enum tree_code.

	* m68k.md (tablejump): New pattern.
	(casesi, etc.): Deleted.

	* tree.c (debug_obstack): New function.

	* toplev.c (compile_file): Call dbxout_finish near the end.
	* dbxout.c (dbxout_finish): New function.

	* print-tree.c (print_node): Always print ERROR_MARK node briefly. 

	* objc-actions.h (METHOD_ENCODING, CLASS_CATEGORY_LIST): New macros.

	* gcc.c (execute): Make fatal signal message clearer.
	(default_compilers): For .m file, define __OBJC__,
	and pass -lang-objc and -gen-decls to cc1.

	* dwarfout.c: Include output.h.
	(current_function_decl, asm_out_file): Explicit extern decls deleted.
	(abort, fatal): Explicit extern decls deleted.
	(NO_RETURN): Definition deleted.
	(named_labels): Don't declare it.
	(output_symbol): Don't use it.
	(MAXPATHLEN): Don't define this.  Don't include sys/param.h.
	(output_source_file_die): Avoid limit on file name size.
	(output_symbols_for_stmt): Deleted.
	(output_symbols_for_block): Adapt to using BLOCK, not LET_STMT.

	* configure: Renamed from `config'.
	* config: Directory renamed back from config-dir.

Sat Jan 26 1990	 Ron Guilmette (rfg at ncd.com)

	* README.DWARF: updated to reflect changes to dwarfout.c, the
	inclusion of dwarf.h (and its changes) and the fact that the
	DWARF support is no longer directly tied to the DG versions of
	GCC.

	* dwarfout.c: included a patch (provided by Ray Essick) to allow
	dwarfout.c to properly get a value for MAXPATHLEN even on (old)
	System V.3 systems.

	* dwarfout.c: added support for long long types (as suggested by
	Ray Essick).

	* dwarfout.c: added support for the AT_comp_dir attribute.  Also,
	as part of this change, the name of the compilation directory is
	no longer placed into in the .sources section.

	* dwarfout.c: added support for the AT_addr_ranges attribute.

	* dwarfout.c: added support for the AT_prototyped attribute.

	* dwarfout.c: added support for the AT_src_info attribute. Also,
	as part of this change, there is no longer a "special" entry
	at the start of the .srcinfo section for each compilation unit,
	and the contents of the "special" final entry in the .srcinfo
	section have changed (to { -1, -1 }).

	* dwarfout.c: modified to allow additional GNU DWARF extensions
	to be generated whenever the corresponding extended attribute
	codes are defined (presumably within a modified dwarf.h file).

	* dwarfout.c: use the section names .srcinfo and .sources rather
	than .finfo and .files.	 The additional specificity is warranted
	because the DWARF information may someday include information
	about object files as well as source files.

	* dwarfout.c: fixed a bug where a type attribute was being generated
	for functions and function types even when the return type was
	void.  "Standard" dwarf says that if the return type for a function
	or function type is void then no type attribute should be generated
	for the corresponding DIE.

Sat Jan 26 04:22:08 1991  Michael Tiemann  (tiemann at cygnus.com)

	* cplus-lex.c (interface_strcmp): Handle String.String.Map.cc and
	friends.

	* cplus-typeck.c (build_unary_op): Merge change to generate better
	code from simple cast expression.

Fri Jan 25 10:06:28 1991  Michael Tiemann  (tiemann at cygnus.com)

	* cplus-decl.c (pushtag): Don't call `pushdecl' if the type's name
	is anonymous, lest we recurse ad infinitum.

Thu Jan 24 23:56:55 1991  Richard Stallman  (rms at mole.ai.mit.edu)

	* optabs.c (expand_binop, expand_unop): Word at a time only for ints.

Thu Jan 24 09:40:37 1991  Tom Wood  (wood at dg-rtp.dg.com)