changelog.5

早期freebsd实现

	* expmed.c (expand_mult): Use synth_mult even if not -O.

Sun May 17 02:54:21 1992  Richard Stallman  ([e-mail])

	* c-decl.c (push_parm_decl): Pedantic warning if shadowing typedef.

	* c-typeck.c (constant_expression_warning): New function.
	(store_init_value): Call that.
	* tree.h (TREE_CONSTANT_OVERFLOW): New flag.

	* c-lex.c (yylex): "exceeds range" warning changed to pedwarn.
	* c-decl.c (grokdeclarator): Likewise for duplicate keywords.

	* c-typeck.c (build_unary_op): For increment operators,
	test TREE_READONLY in operand, not the data type.

	* unprotoize.c: New file.
	* Makefile.in (unprotoize.o): Use that.

	* c-decl.c (init_decl_processing): Make global decl for __NAME__.
	(store_parm_decls): Make local decl for __NAME__.
	(declare_function_name): Subroutine for that.
	* toplev.c (rest_of_decl_compilation):
	Ignore initialized statics if DECL_IGNORED_P is set.
	* c-lex.c (yylex): Convert invisible initialized char array vars
	to string constants.

	* c-decl.c (get_parm_info): Change error message.

Sat May 16 21:25:21 1992  Paul Eggert  ([e-mail])

	* fold-const.c (fold): Do not fold X-X to 0 if X is floating point.

	* cse.c (simplify_unary_operation): - -X simplifies to X even
	with IEEE floating point.

Sat May 16 14:14:50 1992  Richard Stallman  ([e-mail])

	* Makefile.in (clean): Delete *.dvi.
	(distclean): Not here.

	* Makefile.in (install-man): Ignore errors in all commands.

	* combine.c (expand_compound_operation):
	Don't simplify extending a const_int.

	* ns32k.h (NS32K_DISPLACEMENT_P): New macro.
	(INDIRECTABLE_1_ADDRESS_P): Use that.
	* ns32k.md (addsi3): Likewise.

Sat May 16 07:47:11 1992  Tom Wood  ([e-mail])

	* m88k.h: Override SET_ASM_OP in svr4.h. 

Sat May 16 00:10:09 1992  Richard Stallman  ([e-mail])

	* c-parse.y (parmlist_1): Add pedantic warning.

Fri May 15 13:10:07 1992  Richard Stallman  ([e-mail])

	* configure (i386-*-sco3.2v4*): New file.
	* config.sub: For SCO, produce -sco3.2v2.  For ISC, make just -isc.

	* dbxout.c (DBX_TYPE_DECL_STABS_CODE): Was DBX_DECL_STABS_CODE.
	(DBX_OUTPUT_ENUM): Pass type as arg; make it do the whole job.

	* svr4.h (ASM_BYTE_OP): Delete the tab.
	(SET_ASM_OP): New definition.

	* Makefile.in (gcc.xtar): Depend on doc.
	(gcc.info, cpp.info): Duplicate rules deleted.

	* i386.c (handle_pragma): Use SET_ASM_OP, not DEF_ASM_OP.

Fri May 15 12:38:18 1992  Jim Wilson  ([e-mail])

	* final.c (final_scan_insn): Don't set new_block when within a
	sequence.  Set it after the last insn of the sequence.

Fri May 15 07:23:09 1992  Tom Wood  ([e-mail])

	* m88k.c (m88k_handle_pragma_token, output_short_branch_defs):
	Use SET_ASM_OP.

Fri May 15 14:54:54 1992  Howard Chu ([e-mail])

	* fx2800.h: Replace Ron Guilmette's version with working version.
	Tested on Concentrix 2.1 and 2.2.

	* i860.c (singlemove_string): Comparison of const0_rtx was in the
	wrong place and would never be reached. Added check for negative
	short int constants.
	(output_size_for_block_move): call singlemove_string instead of
	just emitting a mov.
	(sfmode_constant_to_ulong): eliminate bogus "# error" directive.

	* t-fx2800, x-fx2800, xm-fx2800.h: New files.
	* configure: Corresponding changes.

	* dbxout.c (DBX_MEMPARM_STABS_LETTER): New macro.
	(dbxout_type): Check for DBX_OUTPUT_ENUM.
	(dbxout_parms): Use DBX_MEMPARM_STABS_LETTER.
	(dbxout_block): Check for DBX_OUTPUT_LBRAC, DBX_OUTPUT_RBRAC.

Thu May 14 18:26:13 1992  Jim Wilson  ([e-mail])

	* sparcv4.h (ASM_OUTPUT_ALIGN_JUMP_TABLE, ASM_OUTPUT_INTERNAL_LABEL,
	ASM_GENERATE_INTERNAL_LABEL): Delete.

Thu May 14 13:51:01 1992  Chip Salzenberg  ([e-mail])

	* toplev.c (compile_file):  Use IO_BUFFER_SIZE for finput.
	* xm-i386sco.h, xm-rs6000.h (IO_BUFFER_SIZE): Defined.

Thu May 14 15:21:24 1992  Roland McGrath  ([e-mail])

	* config.sub: Recognize "none" as a valid os.

Thu May 14 13:37:52 1992  Richard Stallman  ([e-mail])

	* function.c (assign_parms): Make new stack slot if entry stack
	slot isn't aligned as much as the mode wants.
	And don't make an eqv for entry_parm in that case.
	* sparc.c (output_move_double): Assume memory always ok for ldd, std
	except when explicit offset from stack.

	* c-decl.c (duplicate_decls):
	Don't warn about qualifier mismatch for a function.

	* c-decl.c (grokdeclarator): Give explicit list of types to promote
	to int (and sometimes to unsigned int) for parms.

	* Makefile.in (gcc.info, cpp.info): New targets.
	(gcc.xtar): Depend on those.

	* expmed.c (extract_bit_field): Don't fail to compute
	all of a DImode value.

	* dwarfout.c (SET_ASM_OP): Renamed from DEF_ASM_OP.
	(ASM_OUTPUT_DEF): Use SET_ASM_OP.
	* m88k.h (SET_ASM_OP): Renamed from DEF_ASM_OP.
	* sparcv4.h (DEF_ASM_OP): No need for #undef.

	* cccp.c (main): Handle -iprefix option instead of GCC_EXEC_PREFIX.
	* gcc.c (process_command): Set gcc_exec_prefix.
	(do_spec_1): Handle %I.
	(default_compilers): Use %I when running cpp.

	* protoize.c (savestring, savestring2): Change parm decls.

	* i860.h, we32k.h (CONST_COSTS): Add missing parm OUTER_CODE.

	* i386v4.h (DEF_ASM_OP, WEAK_ASM_OP): Deleted.

Wed May 13 17:23:45 1992  Richard Stallman  ([e-mail])

	* rtl.c (init_rtl): For byte_mode and word_mode, use first fit.

	* protoize.c (munge_compile_params): Increase size of temp_params.

Wed May 13 13:30:40 1992  Chip Salzenberg  ([e-mail])

	* i386sco4.h: New file.

Tue May 12 23:23:51 1992  Richard Stallman  ([e-mail])

	* expr.c (expand_increment): A subreg as op0 is not necessarily a copy.
	Treat subregs like regs.

	* c-typeck.c (mark_addressable): Different messages for reg var
	if reason is a use in a nested function.

Tue May 12 14:28:22 1992  Tom Wood  (wood at gen-rtx)

	* gcc.c (process_command): -save-temps uses a switches entry.

Tue May 12 21:24:46 1992  Richard Stallman  ([e-mail])

	* collect2.c (vfork): Declaration deleted.

Tue May 12 06:16:49 1992  Niklas Hallqvist  ([e-mail])

	* tower-as.h: Added support for basic block profiling.

Tue May 12 02:34:45 1992  James Van Artsdalen  (james at bigtex.cactus.org)

	* unx386.h (AS3_SHIFT_DOUBLE): New macro to print shift-double
	opcodes.

	* i386gas.h (AS3_SHIFT_DOUBLE): Redefine for GAS shift-double rules.
	(GAS_MNEMONICS): New macro to force use of opcodes for GAS.
	* seq386gas.h (AS3_SHIFT_DOUBLE,GAS_MNEMONICS): Likewise.

	* i386.c (print_operand): Use GAS_MNEMONICS to choose long-long
	opcode suffix.

	* i386.md (ashldi3,ashrdi3,lshrdi3): Split into separate
	recognizers for constant and variable shifts.
	Use AS3_SHIFT_DOUBLE for variable shifts.
	(all shifts and rotates): Don't allow memory operands for shift
	count.
	(bit set/clear): Don't allow non-CONST_INT constants as SET_SRC.
	(movstrsi,cmpstrsi,strlensi): Allow any address_operand within
	a MEM:BLK, not just register_operand.
	(movstrsi): Rewrite to avoid match_dup on the address_operand
	above.

Mon May 11 23:31:47 1992  Mike Stump  ([e-mail])

	Sun May 10 18:44:58  Per Bothner  ([e-mail])

	* dbxout.c (dbxout_type_methods):  Only emit final semi-colon
	of method list of we have emitted any methods.  (The converse
	of only emitting the operation name initially if needed.)

Mon May 11 22:45:18 1992  Richard Kenner  (kenner at vlsi1.ultra.nyu.edu)

	* reload.c, reload1.c: Use reg_overlap_mentioned_for_reload_p and
	refers_to_regno_for_reload_p instead of the normal versions.
	* reload.c (reg_overlap_mentioned_for_reload_p): New function.

Mon May 11 22:44:50 1992  Ron Guilmette  (rfg at ncd.com)

	* integrate.c (expand_inline_function):  Copy LABEL_NAMEs to new
	copies of CODE_LABELs.
	* tree.c (decl_function_context, decl_type_context):  Renamed `fndecl'
	formal parameter to `decl' throughout these functions.

Mon May 11 18:43:45 1992  Paul Eggert  ([e-mail])

	* cccp.c: (deps_file): Deleted.
	(main): Do not open deps_file until needed.
	Check error status of dep_stream and stdout more carefully.
	(timestamp): New function; avoids calling localtime unless needed.
	(special_symbol, initialize_builtins): Use new timestamp function.

Mon May 11 20:48:26 1992  Richard Stallman  ([e-mail])

	* genix.h: Added #error, since this hasn't been updated.

Mon May 11 14:33:32 1992  Ron Guilmette (rfg at ncd.com)

	* dwarfout.c (is_pseudo_reg):  New function.
	(location_attribute):  Use `is_pseudo_reg'.
	(location_or_const_value_attribute):  Use DECL_INCOMING_RTL as the
	basis for forming the location decsriptor for any register parameter
	which was optimized into non-exitance.

	* dwarfout.c (DWARF_VERSION):  New (default) definition.
	(ASM_OUTPUT_DWARF_STACK_OP, ASM_OUTPUT_DWARF_FMT_BYTE,
	ASM_OUTPUT_DWARF_TYPE_MODIFIER, ASM_OUTPUT_DWARF_DATA1):  Output tab
	before ASM_BYTE_OP.
	(ASM_OUTPUT_DWARF_ADDR_CONST):  Encapsulate all statements in a
	`do { ... } while (0)'
	(data_member_location_attribute, bit_offset_attribute):  Both fixed
	to use alignment of declared type of field as the "containing object"
	size.
	(location_or_const_value_attribute):  Fixed to use DECL_INCOMING_RTL
	only for parms passed in memory.
	(output_decl):  Don't output DIEs for externals if DWARF_VERSION == 1.

Sun May 10 17:18:33 1992  Torbjorn Granlund  ([e-mail])

	* pa.h (CPP_PREDEFINES): Define for BSD here.
	Remove conditional #ifdef hpux.
	* pa-hpux.h, pa-ghpux.h (CPP_PREDEFINES): Define for hpux here.
	* pa.h (CPP_SPEC): Define.

Sun May 10 12:12:06 1992  Richard Stallman  ([e-mail])

	* Makefile.in (clean): Delete unprotoize.c.

	* stmt.c (expand_decl): Set MEM_IN_STRUCT_P right in dynamic case.

	* expr.c (get_inner_ref): Handle ARRAY_REF only if constant offset.
	Handle non-PLUS_EXPR variable offset by assuming multiple of byte.
	(expand_assignment, expand_expr): Fix gen_rtx added in last change.

Sat May  9 02:39:58 1992  Richard Stallman  ([e-mail])

	* expr.c (get_inner_reference): New output arg poffset.
	(expand_assignment, expand_expr): Pass new arg.  Handle nonzero offset.
	(do_jump): Pass new arg but ignore result.
	* fold-const.c (optimize_bit_field_compare, decode_field_reference):
	Pass the new arg.  Just return 0 if offset comes back nonzero.

	* reload.c (find_equiv_reg): Always test valueno >= 0.

	* c-aux-info.c: Don't include param.h or errno.h; don't declare errno.

	* rtl.c (read_rtx): Fix error in prev change.

	* gcc.c (process_command): Handle -print-libgcc-file-name.
	(main): Handle print_libgcc_file_name by printing the name.

	* c-decl.c (finish_struct): Use TYPE_PRECISION to see whether 
	bitfield's type is narrower than int, for promoting to int.

	* cccp.c (struct definition, struct reflist): New field `rest_args'.
	(struct arglist): Likewise.
	(rest_extension, REST_EXTENSION_LENGTH): New var and macro.
	(create_defnition): Recognize `...' and set flag in arglist.
	(collect_expansion): Propagate flag to definition.
	(macroexpand): Check flag when parsing arglist.
	Special handling for ## next to a rest arg.
	(macarg, macarg1): New arg rest_arg affects parsing in macarg1.

	* genattrtab.c: Misc speedups and size reductions.
	(check_attr_test): Set RTX_UNCHANGING_P for tests of const attributes.
	Also for symbol_ref and comparison ops.
	(make_canonical): Likewise.  Also check for degenerate cond values.
	(operate_exp, simplify_cond, insert_right_side, evaluate_eq_attr):
	Avoid copying in some cases.  Detect opportunities to simplify.
	(compute_alternative_mask): Avoid atoi in most cases.
	(copy_rtx_unchanging): New function.
	(evaluate_eq_attr, simplify_test_exp): Use that.

	* genattrtab.c (optimize_attrs): Work pattern by pattern,
	doing all the work for each pattern before moving on.
	Use temp_obstack during simplification, then copy the end result.
	(temp_obstack): New obstack.
	(clear_struct_flag): New subroutine.
	(SIMPLIFY_TEST_EXP): Test MEM_IN_STRUCT_P.
	(simplify_test_exp): Add code for debugging stop.
	Avoid consing when possible; sometimes free storage.
	Check MEM_IN_STRUCT_P.  Add shortcuts.

	* genattrtab.c: Add simplification per alternative (not in use now).
	(insn_n_alternatives): New array filled in by gen_insn.
	(current_alternative_string): Nonzero means we are simplifying 
	for a particular alternative.  Value is string for that numeral.
	(SIMPLIFY_ALTERNATIVE): New macro simplifies eq_attr for alternative.
	(evaluate_eq_attr, simplify_test_exp): Call SIMPLIFY_ALTERNATIVE.
	(simplify_by_alternatives, count_sub_rtxs): New functions.

	* genattrtab.c (attrs): Now an array indexed by first char.
	(MAX_ATTRS_INDEX): Length of above.
	(find_attr, main): Use that new data structure.

	* genattrtab.c: Clarify use of hash-consing:
	(hash_obstack): New obstack.
	(attr_hash_add_rtx, attr_hash_add_string): Use hash_obstack.
	(attr_rtx): Use hash_obstack if object is hashed.
	Set RTX_INTEGRATED_P if object is hashed.
	Don't hash object if subexpressions aren't hashed.
	If making symbol_ref, hash the symbol name.
	Uniquize const_int with value 0 or 1.
	(attr_equal_p): New compare function; uses RTX_INTEGRATED_P.
	(simplify_and_tree, simplify_or_tree, simplify_test_exp): Use that.
	(attr_copy_rtx): New; copy all but hashed subexpressions.
	(attr_eq): New function.
	(attr_numeral): New function.
	(check_attr_test): Use attr_eq.  Hash symbol_ref and comparison ops.