changelog.1

早期freebsd实现

	* tree.c (function_maybepermanent_obstack): Make a separate
	saveable obstack for each nested function level.
	(init_tree): Init this variable.
	(save_tree_status, restore_tree_status): Save and restore it.
	Create and free a new obstack for the purpose.
	(temporary_allocation, resume_temporary_allocation): Use this var.
	(preserve_data, preserve_initializer): Use this var.
	(make_node): Use this var for PARM_DECL nodes.

	* tree.c (push_obstacks): New name for push_obstack.
	Additional arg specifies saveable_obstack.  All calls changed.
	(pop_obstacks): New name for pop_obstack.  All calls changed.

	* config.gcc: Add `3300'.
	(genix): Fix typo in name of makevar file.
	* tm-mot3300.h, xm-mot3300.h: New files.
	* math-3300.h: New file.

	* output.h: Fix typo in SDB_DEBUGGING_INFO.

	* tm-sun386i.h (LINK_SPEC): Moved here, and -static handled.
	* xm-sun386i.h: Moved from here.
	* tm-alliant.h (LINK_SPEC): Moved here, from xm-alliant.h.

	* tm-convex.h, tm-i860.h, tm-spur.h, tm-vax.h, tm-tahoe.h, tm-pyr.h:
	Delete FIX_FRAME_POINTER_ADDRESS.

	* tm-sparc.h, tm-m88k.h: Turn off FIX_FRAME_POINTER_ADDRESS.
	INITIAL_FRAME_POINTER_OFFSET could be written later.

	* tm-m68k.h, tm-ns32k.h, tm-alliant.h, tm-i386.h, tm-mips.h:
	Define INITIAL_FRAME_POINTER_OFFSET.

	* toplev.c (compile_file): Remove .m and .cc suffixes, like .c.

	* final.c (end_final): For basic block profiling, don't output
	source file name.  Instead, append ".d", and remove ".c".
	* gnulib2.c (__bb_init_func): New name for __bb_init_function.
	Conditionalize on mc68000, not m68k.
	Fix other typos.

Wed Mar 28 16:07:15 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* c-decl.c, cplus-decl.c (duplicate_decls): Preserve DECL_FRAME_SIZE
	from definition past subsequent declarations.

	* c-decl.c (xref_tag): If global_binding_level, make nodes permanent.

	* expmed.c (init_expmed): Set up mult_is_very_cheap.
	(expand_mult): Never use shifts if mult_is_very_cheap.

	* expr.c (store_expr): When copying through new temporary,
	allocate temporary first and use as target.

	* tm-m68k.h (HARD_REGNO_MODE_OK): Abort on VOIDmode.

	* reload1.c (fix_frame_pointer_address): New function.
	(alter_frame_pointer_addresses): New arg INSN.  Calls changed.
	Use that function instead of macro FIX_FRAME_POINTER_ADDRESS
	which is now obsolete.
	(eliminate_frame_pointer): Use macro INITIAL_FRAME_POINTER_OFFSET
	to initialize depth.  Abort if that macro is missing.

	* expmed.c (store_bit_field): If loading MEM into a reg, use the
	mode of the MEM if that is not BLKmode.
	(extract_bit_field): Likewise.

	* tm-mips.h (STRUCTURE_SIZE_BOUNDARY): Changed from 16 to 8.

	* calls.c (expand_call): Handle STACK_BOUNDARY when using push insns.

	* function.c (assign_parms): Note how PUSH_ROUNDING affects stack
	parm size.

Tue Mar 27 19:40:11 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* c-decl.c (poplevel): Output inline nested functions if needed.
	* cplus-decl.c: Likewise.

	* i386.md (insv): New pattern added for the moment.

Tue Mar 27 17:47:35 1990  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* function.c (lookup_outer_static_chain): Deleted, no longer used.
	(trampoline_address): RTL for trampoline, rather than its address, is
	stored in trampoline list.
	Just add entry to list; don't fill in the trampoline here.
	(expand_function_end): Fill in any required trampolines here.
	(expand_function_start): Move tail recursion entry to after
	creation of display list; size computations come next.

Tue Mar 27 14:09:31 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* m68k.md (movsi, movhi, movstricthi, movqi, movstrictqi):
	Avoid both clr and st on volatile mem, but only on 68000.
	(SImode store 0 recognizer): Likewise.

	* stor-layout.c (agg_mode): Don't consider PSImode, etc.

Mon Mar 26 21:12:16 1990  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* local-alloc.c (combine_regs): Only set suggested bit for first
	register if multi-word quantity.
	(find_free_reg): Look at suggested regs for first in set, then use
	all available for subsequent regs.

Mon Mar 26 15:01:02 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* c-decl.c (start_enum): Don't lay out the type.
	(finish_enum): Always lay it out, and always set the precision.
	Change the type of the enumerators if int is too narrow.

	* tm-m68k.h (NOTICE_UPDATE_CC): addq and subq do update cc's
	even if destination is an address register.

	* c-parse.y, objc-parse.y (check_newline): Call HANDLE_PRAGMA if def.
	* out-next.c: New file.
	(handle_pragma): New function.
	* tm-next.h (HANDLE_PRAGMA): Define it.

	* Makefile.in (GNULIB2): New variable.
	(gnulib2): Use it.
	(gnulib2.portable): New name for old rule.
	(install-headers): Split out part of install rule.
	(INSTALL_HEADERS): New variable.

	* make-next: New file.

	* function.c (assign_parms): Get type from proper place.
	internal_arg_pointer is now an arg.  Compute arg_pointer_copied
	from that.  Fix typos.
	(expand_function_start): Compute internal_arg_pointer here.
	Fix typos handling incoming struct value address.

	* cccp.c (do_include): Ignore null strings found in stackp.

	* cccp.c (discard_comments): Handle backslash-newline.

Mon Mar 26 07:18:58 1990  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* function.h (temp_slot, temp_slot_level): Now saved by function.c.
	* function.c (struct temp_slot): Move from stmt.c.
	(push_function_context, pop_function_context): Save/restore temp slots.
	(assign_parms): Pass type to locate_and_pad_parms.
	(locate_and_pad_parms): Accept TYPE.
	Don't need STACK_OFFSET.
	(expand_function_start): Pass type to locate_and_pad_parms.
	(init_function_start): Initialize temp_slot info.
	* stmt.c (temp_slot, init_stmt_for_function, save_stmt_status,
	restore_stmt_status): Delete temp_slot stuff from here.

Sun Mar 25 20:21:58 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* expr.c (emit_move_insn): Turn memory address checking back on,
	but allow push_operand for x.

	* ns32k.md (movstrsi): If UTEK_ASM, output $0 operand in movsd.
	(movsi): Handle UTEK_ASM like GNX_V3.
	* out-ns32k.c (print_operand_address): Add UTEK_ASM conditionals.
	* tm-merlin.h: New file.

	* tm-ns32k.h (FUNCTION_PROLOGUE, FUNCTION_EPILOGUE):
	Use save and restore insns if no frame pointer.

	* cccp.c (handle_directive): Discard backslash-newline within <...>.

Sat Mar 24 13:23:52 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* gcc.c (default_compilers): Add entry for .m files, for Objective C.
	Always pass some -lang... option to cpp.

	* cccp.c (do_include): Support #import as well as #include.
	(lookup_import, add_import, import_hash): New functions.
	(main): Handle options -lang-c++ and -lang-objc and -lang-c.
	Set variables cplusplus and objc.
	(enum node_type, directive_table): Add #import.
	(handle_directive): Treat #import as undefined unless objc is nonzero.
	(initialize_builtins): If objc, define __OBJC__.

	* Makefile.in (lang-objc, cc1obj): New targets.
	(objc-parse.o, objc-parse.c, objc-actions.o): New targets.
	(C_OBJS): Add c-lang.o.

	* objc.gperf: New file.
	* objc-parse.y, objc-actions.c, objc-actions.h: New files.

	* c-lang.c: New file.
	* c-decl.c (c_decode_option): New name for lang_decode_option.
	Used from c-lang.c and objc-actions.c.

	* toplev.c (compile_file): Call lang_init and lang_finish.
	* c-lang.c, objc-actions.c, cplus-decl.c: Define those functions.

	* c-typeck.c (comptypes): Call maybe_objc_comptypes for record types.
	* c-lang.c, objc-actions.c (maybe_objc_comptypes): New functions.

	* c-decl.c (implicitly_declare, finish_decl, finish_struct):
	Call maybe_objc_check_decl before rest_of_decl_compilation.
	* c-lang.c, objc-actions.c (maybe_objc_check_decl): New functions.

	* function.c (assign_stack_local): Align each slot only as needed.
	Normally don't round size up, just align first.
	New argument ALIGN specifies alignment, or 0 for that of MODE.
	All callers changed.
	(assign_outer_stack_local): Likewise.
	* final.c (final_start_function): Round frame size to STACK_BOUNDARY.

	* function.c (assign_stack_temp, preserve_temp_slots):
	(free_temp_slots): Moved from stmt.c.

	* stmt.c (expand_decl): Use convert_units to avoid overflow.

Fri Mar 23 00:52:34 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* c-decl.c (grokdeclarator): Warn if array element is incomplete.

	* varasm.c (assemble_variable): Use convert_units to compute
	size in bytes.
	(output_constructor): Likewise, for non-bit fields.

	* c-typeck.c (check_format, my_strchr): New functions.
	(build_function_call): Call check_format.
	* c-decl.c (lang_decode_options): Handle -Wformat.
	* c-tree.h (warn_format): New flag.

	* xm-hp9k320.h (USE_C_ALLOCA): Define if not compiling with GCC.

Thu Mar 22 23:35:33 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* c-decl.c (get_parm_info): Void parm is special only if no name.

	* loop.c (may_not_optimize): Static var replaces local `may_not_move'.
	(strength_reduce): Don't accept those regs as givs.

Thu Mar 22 06:45:16 1990  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* integrate.c (expand_inline_function): Compute delta to frame
	from the address at which it was allocated.

Wed Mar 21 17:36:40 1990  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* recog.c: Increase number of changes saved for validate_change.
	(validate_change): If INSN == 0 and in group, add to group; if not,
	always OK.
	(apply_change_group): If INSN == 0, change is always OK.

	* cse.c (cse_basic_block): If extending block, don't call
 	cse_end_of_basic_block with null insn if we got to end of function.

Wed Mar 21 14:08:35 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* calls.c (expand_call): Don't reuse pending_stack_adjust for argblock
	if inhibit_defer_pop.

	* expr.c (push_block): New argument EXTRA.  All callers changed.
	(emit_push_insn): Use that for the padding when using push_block.

	* tm-sparc.h (FUNCTION_ARG, FUNCTION_INCOMING_ARG):
	Only word-aligned BLKmodes can go in registers.
	(FUNCTION_ARG_PARTIAL_NREGS): Likewise.
	* tm-spur.h (FUNCTION_ARG, FUNCTION_INCOMING_ARG): Likewise.
	* expr.c (expand_call): If encounter a stack parm before offset
	gets up to zero, make it zero.
	* function.c (assign_parms): Likewise.

	* ns32k.md (stack adjust insn): Don't use cmpd or cmpqd on Sequent.
	* tm-sequent.h (SEQUENT_ADJUST_STACK): Define this.

	* make-hp9k320g (AR): Define it.
	* Makefile.in (gnulib): Use OLDAR.
	(OLDAR): New variable.

	* make-iris: New file.

	* xm-iris.h: Undef alloca before defining it.

	* Makefile.in (stage1, ...): Always copy gnulib, never link.

	* cccp.c (main): Use -d...M... as option for macro dump.
	* gcc.c (default_compilers): Pass -d* to cpp.

Tue Mar 20 01:41:49 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* c-parse.y (datadef): Error message fix.
	* cplus-parse.y: Likewise.

Mon Mar 19 15:26:27 1990  Richard Stallman  (rms at sugar-bombs.ai.mit.edu)

	* integrate.c (expand_inline_function): Save static chain value.
	(copy_rtx_and_substitute): Substitute it where called function
	copies its static chain.
	* emit-rtl.c (init_emit_once): Make static_chain_incoming_rtx
	distinct.

	* function.c (current_function_contains_functions): New variable.
	(init_function_start): Initialize it.
	(pop_function_context): Set it to 1.
	* integrate.c (function_cannot_inline_p):
	Don't inline fn with nested fns.

	* integrate.c (copy_rtx_and_substitute): Don't replace fp
	as destination of assignment.

	* assert.h (__assert) [not __GNUC__]: Rename arg to avoid stringify.

	* function.c (expand_function_start): If struct_value_incoming_rtx
	is 0, get the address from first parm reg or first stack slot.
	(assign_parms): In that case, skip the space it occupies.

	* calls.c (expand_call): If STRUCT_VALUE is 0, pass address as parm
	even if that means using a register.

Mon Mar 19 07:43:46 1990  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* integrate.c (function_cannot_inline_p): Check for non-ANSI varargs
	as well as ANSI varargs.
	Allow inlining of functions with large frames now that we can share
	them between inlined functions.
	(expand_inline_function): Save static vars in case we were called
	recursively.
	Make sure we don't free temporary stack slot used for argument.

	* tree.def: Add new code types '<', '1', and '2