ochangelog

这是完整的gcc源代码

	(use_variable_after): new fn.
	(expand_end_bindings): handle cleanups like a stack level.
	(expand_decl): Handle a cleanup with no decl.
	(move_cleanups_up): Preserve relative order of cleanups.
	(expand_anon_union_decl): New fn.
	(pushcase): New fast clause if no ranges yet.
	(pushcase_range): Turned on.
	(expand_function_start): New temp var `fntype'.
	Set TREE_USED for a parm we are ignoring.
	(expand_function_end): Really use the `filename' arg.
	Use use_variable_after for SAVE_EXPR regs.

	* dbxout.c (dbxout_type): Handle OFFSET_TYPE.

	* gnulib.c (__builtin_new, etc.): Support for C++.

	* emit-rtl.c (next_insn, prev_insn): New fns.

Sat Nov 26 16:29:22 1988  Richard Stallman  (mdt at chickasaw)

	* tree.h (TREE_LANG_FLAG_[1234]): New attributes.
	(TYPE_METHOD_BASETYPE): New name for TYPE_METHOD_CLASS.
	(TYPE_OFFSET_BASETYPE): New macro.
	(NUM_TREE_CODE): New macro.
	(TYPE_NONCOPIED_PARTS): new field in a type-node.

	* varasm.c (make_decl_rtl): Split out from assemble_variable.
	(assemble_variable): No longer creates the rtl.
	No longer handles policy of whether to output tentative decl yet.
	(output_constant_def): Don't lose if wasn't temp allocation
	when this was called.
	(output_constant): Handle REFERENCE_EXPR.

	* Makefile (BISONFLAGS): new variable.
	(prefix): New variable, used in bindir and libdir.
	(C_OBJS, CPLUS_OBJS): New vars, split off from OBJS.
	(LIBFUNCS): C++ support functions added.
	(CPLUS_TREE_H): New variable.
	(cc1plus): New target.
	(lang_c, lang_cplus): Combines all targets for one language.
	(gplus.info): New target.
	(cplus-*.o): New targets.
	(realclean): Handle new C++ files and recent renamings.
	(install, TAGS): Likewise.

	* print-tree.c (prtypeinfo): Handle TREE_LANG_FLAG_[1-4].

	* tm-sparc.h (ASM_OUTPUT_DOUBLE): Special case for infinity.
	(ASM_OUTPUT_FLOAT): Likewise.

	* gcc.c: Don't define __GNU__.
	For .cc files, pass -+ to cpp, and don't handle -ansi.
	Use cc1plus as name of compiler for .cc files.

	* stor-layout.c (layout_type): abort if given a LANG_TYPE node.
	(layout_union): Complain if union has basetypes or static members.
	(layout_record): Handle anonymous union members.

	* tree.def (LANG_TYPE): New tree code for language-specific purposes.
	(WITH_CLEANUP_EXPR): New tree code for expressions whose values
	need to be cleaned up when they are deallocated.
	(OP_IDENTIFIER): New tree code for certain C++ purposes.

	* toplev.c (rest_of_decl_compilation): Call make_var_rtl
	before assemble_variable.

Wed Nov 23 02:15:45 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* xm-sunos4.h: Rename included config files to xm-*.
	* xm-*.h: Likewise.

	* fixincludes: Avoid altering args to names other than CTRL
	that end in ...CTRL.
	If a file isn't actually changed, delete the copy.

Mon Nov 21 12:48:22 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* loop.c (move_movables): Never move a reg w/ # > old_max_reg.
	(strength_reduce): For nonreplaceable giv, put insn to load it
	after the insn that used to compute it, in case the latter
	is the last of a libcall sequence.

	* stmt.c (expand_function_end): If returning BLKmode, also copy
	address where value is returned to the place that GDB will
	expect to see it after the return.

	* c-parse.y (readescape): Warn about hex constant out of range
	for a target integer.
	(yylex): Warn about escape out of range for non-wide char or string.
	Use a buffer of ints to read a wide string.

Sat Nov 19 02:18:02 1988  Richard Stallman  (rms at apple-gunkies.ai.mit.edu)

	* Version 1.31 released.

	* sparc.md: Change `K' to `I' in all constraints.

	* loop.c (gen_iv_mult): Handle TARGET==0.

	* c-decl.c (duplicate_decls): Undo last change.

	* c-decl.c (pushdecl): Instead of that change,
	save old-decl's file/line before calling duplicate_decls,
	and pass them later to warning_with_file_and_line.
	* toplev.c (warning_with_file_and_line): New fn.

Fri Nov 18 13:07:06 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* stmt.c (fixup_var_refs_1): (SUBREG (MEM)) was slipping through
	in case where a SET was writing in the variable being fixed.

	* recog.c (register_operand, nonmemory_operand, memory_operand):
	Changes to handle new var reload_completed: 1 means that
	(SUBREG (MEM)) now counts as a mem-ref, since alter_subreg
	will make it one.
	* toplev.c (rest_of_compilation): Set and clear reload_completed.

	* sparc.md (call patterns): If TARGET_SUN_ASM, and address in reg,
	output a jmpl rather than a call.
	* tm-sun4os3.h: Like tm-sparc.h but turn on TARGET_SUN_ASM.

	* reload.c (push_reloads): Reinstate handling of reg_equiv_constant.

Thu Nov 17 09:48:14 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* reload1.c (constraint_accepts_reg_p): Name changed from
	constraint_all_regs_p; new arg is reg we are concerned with,
	and condition tested takes some advantage of that reg.

	* gcc.c (main): Rename var `error' to `error_count' for name conflict.

	* emit-rtl.c (emit_note): Output line #s even if no debug info wanted.
	(emit_line_note): New fn, does what emit_note did.
	(emit_line_note_force): New name for emit_note_force.
	* stmt.c, c-parse.y: Call emit_line_note instead of emit_note.

	* c-parse.y (maybe_type_qual): Call emit_note instead of emit_line_note
	Now we can find the line # of every `asm' from the RTL.
	* toplev.c (error_for_asm): New fn, gets line # by searching for NOTE.
	* reload.c (find_reloads): Use error_for_asm.
	* reload1.c (choose_reload_targets): Likewise.
	* final.c (output_operand_lossage): Likewise.
	Variable this_is_asm_operands is now current insn if it's nonzero.

	* loop.c (move_movables): When a reg is moved, update regno_first_uid
	and regno_last_uid; say life span includes entire loop.
	* Decrement THRESHOLD per reg moved, not per insn moved.

Wed Nov 16 08:41:32 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* gnulib.c (___builtin_saveregs): New fn, for sparc.

	* tm-sparc.h (GO_IF_LEGITIMATE_ADDRESS): Don't recognize
	SYMBOL_REFs, except for the constants pool.
	But do recognize REG+REG and SMALLINT+REG.
	* sparc.md: New patterns for fetching and storing memory
	whose address is symbolic and not "legitimate".

	* sparc.md (movsi): Add `f' to op1 constraint.
	New output clause for result in fp reg.
	(Floating point fetch patterns): Output sethi insns.
	(call_value, related patterns): value-register has `register_operand'.

	* output-sparc.c (hardreg): New function.
	(COMPATIBLE): Clause added for n_regs == 2.
	(single_insn_src_p): Return 0 for MEM whose address is absolute.

	* tm-genix.h (GO_IF_LEGITIMATE_ADDRESS subroutines):
	Redefine, to exclude any possibility of SB-referencing addresses.

	* loop.c (strength_reduce): Can't eliminate a biv if used before
	start of the loop.  Used before is same as used after, if contained
	in another loop.

	* recog.c (asm_noperands, decode_asm_operands):
	Handle case of no outputs, but some clobbers.
	* stmt.c (expand_asm_operands): Generate right stuff for that case.

	* tm-sun3.h (CPP_SPEC): Don't define __HAVE_68881__ if using fpa.

Tue Nov 15 00:10:26 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* loop.c (gen_iv_mult): Arg OP0 may not be a constant.
	Pay attention to return value of expand_mult.
	(eliminate_biv): Call changed.

	* output-m88k.c, output-sparc.c (output_move_double):
	Fix typo `optype0' for `optype1'.

	* c-decl.c (duplicate_decls): Don't alter file, line of old decl.

	* c-parse.y (skip_white_space): Don't recognize comments; rely on cpp.

	* rtl.c (rtx_equal_p): Handle vectors.

	* loop.c (scan_loop): Change elts of n_times_set back to positive
	for candidates that weren't moved, before doing strength reduction.

	* ns32k.md (movdi, movdf): Use `&' constraint for first operand.

	* reload1.c (reload): Initialize spill_indirect_ok here.

	* config-sun4.h: Recognize `-static' switch.

	* global-alloc.c (set_preference): Avoid using nonsense hard reg #s
	that result from adding OFFSET.

	* sdbout.c (sdbout_end_function): Line # in .ef should be relative.

	* final.c (output_source_line): For SDB, don't output negative #s.

	* tm-encore.h (ASM_OUTPUT_LOCAL): Don't ignore SIZE arg.

Mon Nov 14 11:03:16 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* reload.c: Don't declare refers_to_regno_p.

	* gcc.c (main): Warn if any input files are for the linker
	but the linker is not being run.

	* jump.c (sets_cc0_p): Dumb bug fetching elts of a PARALLEL.

	* local-alloc.c: qty_birth, qty_death elements are now -1, not 0,
	when the value is not known.

	* expmed.c (extract_bit_field): Bug computing xbitpos, xoffset
	when changing units from bytes to words.

	* loop.c: Rename `times_used' field in `struct movable' to `savings'.
	(scan_loop): When scanning the consecutive sets, for each libcall,
	increment `savings'--leave `consec'.
	When making movable for (SET (REG) 0) which is part of zero-extension,
	set `savings' to 1 initially, since only 1 insn will be moved.
	And don't let any other reg force that insn.
	Reduce initial THRESHOLDs.
	(move_movables): Don't add `consec' into `savings'
	since the initial `savings' was proportional to `consec'.
	Decrement THRESHOLD by 3 (not 2) for each move done.

	* reload1.c (choose_reload_targets): Strip subregs from OLD
	before writing the output-reload move-insn.

	* reload1.c (reload): counted_for_groups and counted_for_nongroups
	are now file-scope.  Update them both when spilling.
	(new_spill_reg): No need for counted_for_nongroups as arg.
	(choose_reload_targets): Don't use for a group
	any spill regs for which counted_for_nongroups is set.

	* dbxout.c (dbxout_symbol): Indirect-symbol case checked erroneously
	for PARM_DECL.

Sun Nov 13 08:13:49 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* cse.c (fold_rtx): Don't alter MULT by -1 if arg mode != result mode.

	* loop.c (move_movables): If moving a CALL_INSN, make a new CALL_INSN.
	* emit-rtl.c (emit_call_insn_before): New fn.
	
	* config-sun4.h (LINK_SPEC): Avoid shared libraries if -g.

	* expr.c (store_one_arg): Stabilize ARG->stack so it doesn't use SP
	before computing the arg value.

	* combine.c (use_crosses_set_p): Moving a ref to stack ptr
	is always forbidden if machine has push insns, since might cross one.

	* vax.md (movqi): Avoid out-of-range immed ops in mcomb.

	* expmed.c (extract_bit_field): Don't say `extzv' in the
	clause for `extv'.

	* emit-rtl.c (copy_rtx_if_shared): Even if a MEM can be shared,
	unshare its address from everything outside that MEM.

	* expr.c (expand_builtin): Fix omitted arg to `convert_to_mode'.

	* expr.c (store_expr): In case where will not return TARGET
	and must do type conversion, don't fail to store into TARGET.

	* dbxout.c (FORCE_TEXT): New macro used before output `.stabs'
	to go to the text section on targets that require it.
	(DEBUG_SYMS_TEXT): Target macro which turns on that feature.

	* reload1.c (reload): Index in spill_regs was wrong
	when checking counted_for_groups.
	(choose_reload_targets): When calling find_equiv_reg looking for
	a reload reg, reject all spill regs, even those not in use now.

	* tm-sun386.h, tm-sun386i.h, config-sun386i.h: New files.

	* cccp.c (main): Don't die if no output file arg given.

	* fixincludes: Tell `find' to find only ordinary files.

	* config.gcc: If symlink fails, make a hard link.

Sat Nov 12 20:43:20 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* Makefile (gnulib): Use cp to make the temporary .c files;
	less likely to fail than ln.

Sat Nov  5 12:46:39 1988  Randall Smith  (randy at sugar-bombs.ai.mit.edu)

	* tm-m68k.h (HARD_REGNO_MODE_OK): Disallowed d7:a0 as an allowable
	pair of registers to hold a double value.  This is correct for the
	fpa but incorrect for the 68881.  It was, however, simpler than
	defining a new regclass.

Tue Oct 25 12:03:49 1988  Randall Smith  (randy at gluteus.ai.mit.edu)

	* m68k.md: Added some thoughts (comments) on best method to allow
	68881 code with fpa code.

Thu Oct 13 14:19:17 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* Version 1.30 released.

	* stupid.c (stupid_life_analysis): Init last_call_suid with
	largest possible value, not 0.

Wed Oct 12 04:40:18 1988  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* output-i386.c (output_asm_insn_double_reg_op): Compensate for
	assembler bug that interchanges fsub and fsubr.

	* reload1.c (order_regs_for_reload): Undo 29 Sept change.
	It breaks the 386.

	* varasm.c (decode_rtx_const): Don't example value->addr
	if what was stored in was value->d.

	* toplev.c (set_float_handler): New fn, specify where to jump
	on floating exception signal.
	* fold-const.c (combine): Use that to handle overflow in arithmetic.

	* c-decl.c (grokdeclarator): Don't clear CONSTP, VOLATILEP
	when making an array type.