PR optimization/8423
	* cse.c (fold_rtx): Only eliminate a CONSTANT_P_RTX to 1 when
	its argument is constant, or 0 if !flag_gcse.
	* simplify-rtx.c (simplify_rtx): Convert CONSTANT_P_RTX to 1
	if it's argument is constant.
	* gcse.c (want_to_gcse_p): Ignore CONSTANT_P_RTX nodes.
	(hash_scan_set): Don't record CONSTANT_P_RTX expressions.
	(do_local_cprop): Don't propagate CONSTANT_P_RTX constants.
	* builtins.c (purge_builtin_constant_p): New function to force
	instantiation of any remaining CONSTANT_P_RTX nodes.
	* rtl.h (purge_builtin_constant_p): Prototype here.
	* toplev.c (rest_of_compilation): Invoke purge_builtin_constant_p
	pass after GCSE and before loop.
	(flag_gcse): No longer static.
	* flags.h (flag_gcse): Prototype here.

From-SVN: r61642

	* cse.c (cse_insn): Avoid RTL sharing when updating the RETVAL
	insn's notes following a substitution inside a libcall.

From-SVN: r61524

From-SVN: r60174

2002-12-10  Andrew Haley  <aph@redhat.com>

	* cse.c (cse_insn): Don't cse past a basic block boundary.

From-SVN: r60000

	* ChangeLog.1: Fix typos.
	* cse.c: Fix a comment typo.
	* reload1.c: Likewise.

From-SVN: r58596

	* cse.c (mention_regs): Set SUBREG_TICKED to the register number,
	not the address of the REG.
	(struct cse_reg_info): Make subreg_ticked unsigned.

From-SVN: r58075

2002-10-10  Stuart Hastings  <stuart@apple.com>

	* cse.c (struct cse_reg_info): Add subreg_ticked.
	(SUBREG_TICKED): New.
	(get_cse_reg_info): Initialize SUBREG_TICKED.
	(mention_regs): Use it.
	(invalidate): Set SUBREG_TICKED.
	(invalidate_for_call): Likewise.
	(addr_affects_sp_p): Likewise.

From-SVN: r58035

	* cse.c (fold_rtx): Don't perform associative optimization for DIV and
	UDIV.

From-SVN: r58026

	* cse.c (insn_live_p): Pass insn pattern, not full insn
	to may_trap_p.

From-SVN: r57982

2002-09-30  Andrew Haley  <aph@redhat.com>

	* flow.c (insn_dead_p): When using non-call-exceptions, don't
	eliminate insns that may trap.
	* cse.c (insn_live_p): Likewise.

From-SVN: r57688

	* ChangeLog: Follow spelling conventions.
	* ChangeLog.0: Likewise.
	* ChangeLog.1: Likewise.
	* ChangeLog.2: Likewise.
	* ChangeLog.3: Likewise.
	* ChangeLog.4: Likewise.
	* ChangeLog.5: Likewise.
	* ChangeLog.6: Likewise.
	* FSFChangeLog.10: Likewise.
	* FSFChangeLog.11: Likewise.
	* alias.c: Likewise.
	* basic-block.h: Likewise.
	* c-aux-info.c: Likewise.
	* c-common.c: Likewise.
	* c-common.h: Likewise.
	* c-decl.c: Likewise.
	* c-format.c: Likewise.
	* c-semantics.c: Likewise.
	* c-typeck.c: Likewise.
	* calls.c: Likewise.
	* cfganal.c: Likewise.
	* cfgloop.c: Likewise.
	* collect2.c: Likewise.
	* combine.c: Likewise.
	* conflict.c: Likewise.
	* cppexp.c: Likewise.
	* cppfiles.c: Likewise.
	* cpphash.h: Likewise.
	* cppinit.c: Likewise.
	* cpplex.c: Likewise.
	* cpplib.c: Likewise.
	* cpplib.h: Likewise.
	* cppmacro.c: Likewise.
	* cse.c: Likewise.

From-SVN: r57398

* cse.c (fold_rtx): Calculate the old cost before we fold each
operand.

From-SVN: r57394

        * real.c (real_hash): New.
        * real.h: Declare it.
        * cse.c (canon_hash): Use it.
        * cselib.c (hash_rtx): Likewise.
        * emit-rtl.c (const_double_htab_hash): Likewise.
        * rtl.h (CONST_DOUBLE_REAL_VALUE): New.
        * varasm.c (struct rtx_const): Reduce vector size; separate
        integer and fp vectors.
        (HASHBITS): Remove.
        (const_hash_1): Rename from const_hash.  Use real_hash.  Do not
        take modulus MAX_HASH_TABLE.
        (const_hash): New.  Do take modulus MAX_HASH_TABLE.
        (output_constant_def): Do not take modulus MAX_HASH_TABLE.
        (SYMHASH): Don't use HASHBITS.
        (decode_rtx_const): Copy only active bits from REAL_VALUE_TYPE.
        Fix CONST_VECTOR thinko wrt fp vectors.  Fix kind comparison.
        (simplify_subtraction): Fix kind comparison.
        (const_hash_rtx): Return unsigned int.  Don't use HASHBITS.
        Use a union to pun integer array.
        * config/rs6000/rs6000.c (rs6000_hash_constant): Use real_hash;
        only hash two words of integral CONST_DOUBLE.

From-SVN: r57356

gcc/
	* real.c, real.h: Rewrite from scratch.

	* Makefile.in (simplify-rtx.o): Depend on TREE_H.
	(paranoia): New target.
	* builtins.c (fold_builtin_inf): Use new real.h interface.
	* c-common.c (builtin_define_with_hex_fp_value): Likewise.
	* c-lex.c (interpret_float): Likewise.
	* emit-rtl.c (gen_lowpart_common): Likewise.
	* optabs.c (expand_float): Use real_2expN.
	* config/ia64/ia64.md (divsi3, udivsi3): Likewise.
	* defaults.h (INTEL_EXTENDED_IEEE_FORMAT): New.
	(FLOAT_WORDS_BIG_ENDIAN): New.
	* cse.c (find_comparison_args): Don't pass FLOAT_STORE_FLAG_VALUE
	directly to REAL_VALUE_NEGATIVE.
	* loop.c (canonicalize_condition): Likewise.
	* simplify-rtx.c: Include tree.h.
	(simplify_unary_operation): Don't handle FIX and UNSIGNED_FIX
	with floating-point result modes.
	* toplev.c (backend_init): Call init_real_once.

	* fold-const.c (force_fit_type): Don't call CHECK_FLOAT_VALUE.
	* tree.c (build_real): Likewise.
	* config/alpha/alpha.c, config/vax/vax.c (float_strings,
	float_values, inited_float_values, check_float_value): Remove.
	* config/alpha/alpha.h, config/m68hc11/m68hc11.h,
	config/m88k/m88k.h, config/vax/vax.h (CHECK_FLOAT_VALUE): Remove.
	* doc/tm.texi (CHECK_FLOAT_VALUE): Remove.

gcc/f/
	* target.c (ffetarget_real1): Don't pass FFETARGET_ATOF_
	directly to ffetarget_make_real1.
	(ffetarget_real2): Similarly.
	* target.h (ffetarget_cvt_r1_to_rv_, ffetarget_cvt_rv_to_r2_,
	ffetarget_cvt_r2_to_rv_): Use new real.h interface and simplify.

gcc/java/
	* jcf-parse.c (get_constant): Runtime check for IEEE format;
	use new real.h interface.
	* jcf-write.c (find_constant_index): Use new real.h interface.
	* lex.c (IS_ZERO): Use REAL_VALUES_EQUAL.

contrib/
	* paranoia.cc: New file.

From-SVN: r57198

	* ChangeLog: Follow spelling conventions.
	* ChangeLog.0: Likewise.
	* ChangeLog.2: Likewise.
	* ChangeLog.3: Likewise.
	* ChangeLog.4: Likewise.
	* ChangeLog.5: Likewise.
	* ChangeLog.6: Likewise.
	* cppfiles.c: Likewise.
	* cppinit.c: Likewise.
	* cpplib.h: Likewise.
	* cse.c: Likewise.
	* debug.h: Likewise.
	* df.c: Likewise.
	* dominance.c: Likewise.
	* hashtable.c: Likewise.
	* hashtable.h: Likewise.
	* loop.c: Likewise.
	* config/arm/README-interworking: Likewise.
	* config/arm/arm.c: Likewise.
	* config/arm/arm.h: Likewise.
	* config/arm/arm.md: Likewise.
	* config/dsp16xx/dsp16xx.h: Likewise.
	* config/frv/frv.c: Likewise.
	* config/frv/frv.h: Likewise.
	* config/ip2k/ip2k.h: Likewise.
	* config/rs6000/rs6000.c: Likewise.
	* config/stormy16/stormy-abi: Likewise.
	* config/stormy16/stormy16.h: Likewise.
	* config/v850/v850.c: Likewise.

From-SVN: r57146

        * cse.c (cse_insn): Avoid subreg games if the equivalence
        is already in the proper mode.

From-SVN: r56819

	* cse.c (cse_insn): Supply proper SUBREG_BYTE to simplify_gen_subreg.
	Get mode from dest.
	If simplify_gen_subreg fails, try next equivalent.

From-SVN: r55368

simplify-rtx.c (simplify_subreg): Reduce problem of finding vector mode subregs of constants to finding integer...

gcc:
	* simplify-rtx.c (simplify_subreg): Reduce problem of finding
	vector mode subregs of constants to finding integer mode
	subregs of constants.
	* cse.c (cse_insn): Use simplify_gen_subreg.
	* convert.c (convert_to_integer): Don't strip a NOP_EXPR
	From a vector mode expression of different size than the
	target mode.
gcc/testsuite:
	* gcc.c-torture/compile/simd-3.c: New test.

From-SVN: r55234

	PR optimization/6759
	* cse.c (cse_insn): Fold src_eqv just once, store it folded back into
	the REQ_EQUAL note.

	* g++.dg/opt/cse1.C: New test.

From-SVN: r54469

	* cse.c (fold_rtx): Don't optimize if SUBREG changes mode class.

	* g++.dg/opt/cse2.C: New test.

From-SVN: r53905

2002-05-23  David S. Miller  <davem@redhat.com>

	* cse.c (approx_reg_cost_1, approx_reg_cost): Recode to not use
	regsets.

From-SVN: r53793

        * cse.c (canon_hash): Reorder do_not_record test.  Always
        allow pic_offset_table_rtx.

From-SVN: r53665

2002-05-10  David S. Miller  <davem@redhat.com>

	* cse.c (rtx_cost): Remove multiplication by power of 2 special
	casing.

From-SVN: r53369

	* cse.c (dead_libcall_p): Update counts.
	(delete_trivially_dead_insns): Update call of dead_libcall_p.

From-SVN: r53287

	* cse.c: Fix formatting.
	* emit-rtl.c: Likewise.

From-SVN: r53191

	* rtl.h (RTX_FLAG): New macro.
	* emit-rtl.c (copy_most_rtx): Use macros to access rtx flags.
	* final.c (alter_subreg): Use macro to access rtx flag.
	* integrate.c (copy_rtx_and_substitute): Use new access macro.
	* print-rtl.c (print_rtx): Use new access macro.

	* cse.c (insert): Check rtx code before accessing flag.

	* genattrtab.c (ATTR_IND_SIMPLIFIED_P, ATTR_CURR_SIMPLIFIED_P,
	ATTR_PERMANENT_P, ATTR_EQ_ATTR_P): New.
	(attr_hash_add_string, attr_rtx_1, attr_copy_rtx, check_attr_test,
	convert_const_symbol_ref, make_canonical, make_alternative_compare,
	evaluate_eq_attr, attr_rtx_cost, simplify_test_exp_in_temp,
	simplify_test_exp, optimize_attrs, simplify_by_exploding,
	find_and_mark_used_attributes, unmark_used_attributes,
	add_values_to_cover, simplify_with_current_value,
	simplify_with_current_value_aux, clear_struct_flag, walk_attr_value,
	copy_rtx_unchanging, main): Use new access macros.

From-SVN: r52645

	* defaults.h (MODE_HAS_NANS, MODE_HAS_INFINITIES): New.
	(MODE_HAS_SIGNED_ZEROS, MODE_HAS_SIGN_DEPENDENT_ROUNDING): New.
	* flags.h (HONOR_NANS, HONOR_INFINITIES, HONOR_SIGNED_ZEROS): New.
	(HONOR_SIGN_DEPENDENT_ROUNDING): New.
	* builtins.c (expand_builtin_mathfn): Use HONOR_NANS.
	* c-common.c (truthvalue_conversion): Reduce x - y != 0 to x != y
	unless x and y could be infinite.
	(expand_unordered_cmp): New, mostly split from expand_tree_builtin.
	Check that the common type of both arguments is a real, even for
	targets without unordered comparisons.  Allow an integer argument
	to be compared against a real.
	(expand_tree_builtin): Use expand_unordered_cmp.
	* combine.c (combine_simplify_rtx): Use the new HONOR_... macros.
	* cse.c (fold_rtx): Likewise.  Fix indentation.
	* fold-const.c (fold_real_zero_addition_p): New.
	(fold): Use it, and the new HONOR_... macros.
	* ifcvt.c (noce_try_minmax): Use the new HONOR_... macros.
	* jump.c (reversed_comparison_code_parts): After searching for
	the true comparison mode, use HONOR_NANS to decide whether it
	can be safely reversed.
	(reverse_condition_maybe_unordered): Remove IEEE check.
	* simplify-rtx.c (simplify_binary_operation): Use the new macros
	to decide which simplifications are valid.  Allow the following
	simplifications for IEEE: (-a + b) to (b - a), (a + -b) to (a - b),
	and (a - -b) to (a + b).
	(simplify_relational_operation): Use HONOR_NANS.
	* doc/tm.texi: Document the MODE_HAS_... macros.

From-SVN: r50401

	* cfgrtl.c (delete_insn_and_edges, delete_insn_chain_and_edges): New.
	* rtl.h (delete_insn_and_edges, delete_insn_chain_and_edges): Declare

	* basic-block.h (update_life_info, update_life_info_in_dirty_blocks,
	delete_noop_moves): Return indeger.
	* flow.c (ndead): New variable.
	(propagate_block_delete_insn): Use delete_insn_and_edges; remove
	BB argument; update callers.
	(propagate_block_delete_libcall): Use delete_insn_chain_and_edges.
	(life_analysis): Do not call purge_all_dead_edges.
	(update_life_info): Return number of deleted insns; print statistics.
	(update_life_info_in_dirty_blocks): likewise.
	(delete_noop_moves): Use delete_insn_and_edges; print statistics;
	return number of insns deleted.

	* cse.c: Include timevar.h
	(delete_trivially_dead_insns): Kill preserve_basic_blocks argument;
	iterate until stabilizes; print statistics; return number of killed
	insns.
	* Makefile.in: (cse.o): Add timevar.h dependency
	* rtl.h (delete_trivially_dead_insns): New.
	* timever.def: Add TV_DELETE_TRIVIALLY_DEAD timer.
	* toplev.c (rest_of_compilation): Update callers.

	* cfgcleanup.c (try_optimize_cfg): Kill blocks.
	(try_optimize_cfg): Do not update liveness.
	(cleanup-cfg): Loop until try_optimize_cfg and dead code
	removal stabilizes; use delete_trivially_dead_insns.

	* cfgrtl.c (verify_flow_info): Sanity check outgoing edges.

From-SVN: r50355

	* basic-block.h (BB_REACHABLE): Renumber.
	(BB_DIRTY, BB_NEW): New flags.
	(clear_bb_flags): Declare.
	(update_life_info_in_dirty_blocks): Declare.
	* cfg.c (clear_bb_flags): New function.
	* cfgrtl.c (create_basic_block_structure): Set flags to BB_NEW.
	* emit-rtl.c (add_insn_after, add_insn_before, remove_insn,
	reorder_insns, emit_insn_after): Mark block as dirty.
	* flow.c (update_life_info): Fix clearing of PROP_LOG_LINKS.
	(update_life_info_in_dirty_blocks): New function.
	* recog.c (apply_change_group): Dirtify block.

	* cse.c (cse_insn): Reorder emitting of jump insn to keep
	cfg consistent.
	* gcse.c (delete_null_pointer_checks): Likewise.

	* toplev.c (dump_file_index): Move cse2 after bp,
	add DFI_null
	(dump_file_info): Similary.
	(rest_of_compilation): Avoid most of CFG rebuilds;
	do first if converision after null pointer checks, do cse2
	after branch prediction; avoid full liveness rebuild after
	initializing subregs.
	* invoke.texi (-d options): Document -du, renumber.

	* cfgcleanup.c (bb_flags): Remove BB_UPDATE_LIFE.
	(notice_new_block): Do not set BB_UPDATE_LIFE.
	(try_forward_edges, merge_blocks_move_predecessor_nojumps,
	 merge_blocks_move_successor_nojumps, merge_blocks,
	 try_crossjump_to_edge): Likewise.
	(try_optimize_cfg): Likewise; use update_life_info_in_dirty_blocks.
	* cfgrtl.c (merge_blocks_nomove): Copy b's flags to a.
	* ifcvt.c (SET_UPDATE_LIFE, UPDATE_LIFE): Kill.
	(merge_of_block): Do not use life_data_ok.
	(find_if_case_1): Do not use SET_UPDATE_LIFE.
	(if_convert): Use BB_DIRTY mechanizm to update life.
	* lcm.c (optimize_mode_switching): Update
	update_life_info_in_dirty_blocks

From-SVN: r50127

2002-02-19  Aldy Hernandez  <aldyh@redhat.com>

	* config/i386/i386.md ("mmx_uavgv8qi3"): Use const_vector.
	("mmx_uavgv4hi3"): Same.
	("pmulhrwv4hi3"): Same.

	* tree-inline.c (walk_tree): Handle vectors.

	* c-common.c (constant_expression_warning): Handle vectors.
	(overflow_warning): Same.

	* sched-deps.c (sched_analyze_2): Handle vectors.

	* rtlanal.c (rtx_unstable_p): Handle vectors.
	(rtx_varies_p): Same.
	(count_occurrences): Same.
	(regs_set_between_p): Same.
	(modified_between_p): Same.
	(modified_in_p): Same.
	(volatile_insn_p): Same.
	(volatile_refs_p): Same.
	(side_effects_p): Same.
	(may_trap_p): Same.
	(inequality_comparisons_p): Same.
	(replace_regs): Same.
	(computed_jump_p_1): Same.

	* rtl.c (DEF_MACHMODE): Change all definitions to accept 8th
	argument.
	(inner_mode_array): New.
	(copy_rtx): Handle vectors.
	(copy_most_rtx): Same.
	(rtx_equal_p): Same.
	(get_mode_alignment): Adjust for vectors.

	* resource.c (mark_referenced_resources): Handle vectors.
	(mark_set_resources): Same.

	* reload1.c (eliminate_regs): Handle vectors.
	(elimination_effects): Same.
	(scan_paradoxical_subregs): Same.

	* reload.c (subst_reg_equivs): Handle vectors.

	* regrename.c (scan_rtx): Handle vectors.

	* regclass.c (reg_scan_mark_refs): Handle vectors.

	* recog.c (find_single_use_1): Handle vectors.

	* local-alloc.c (equiv_init_varies_p): Handle vectors.
	(contains_replace_regs): Same.
	(memref_referenced_p): Same.

	* integrate.c (copy_rtx_and_substitute): Handle vectors.
	(subst_constants): Same.

	* genattrtab.c (attr_copy_rtx): Handle vectors.
	(encode_units_mask): Same.
	(clear_struct_flag): Same.
	(count_sub_rtxs): Same.

	* gcse.c (want_to_gcse_p): Handle vectors.
	(oprs_unchanged_p): Same.
	(hash_expr_1): Same.
	(oprs_not_set_p): Same.
	(expr_killed_p): Same.
	(compute_transp): Same.
	(store_ops_ok): Same.

	* function.c (purge_addressof_1): Do not allow paradoxical subregs
	of vectors.
	(fixup_var_refs_1): Same.
	(instantiate_virtual_regs_1): Same.

	* fold-const.c (operand_equal_p): Handle vectors.
	(fold): Same.
	(rtl_expr_nonnegative_p): Same.

	* flow.c (mark_used_regs): Handle vectors.

	* df.c (df_uses_record): Handle vectors.

	* cselib.c (cselib_subst_to_values): Handle vectors.
	(cselib_mem_conflict_p): Same.
	(hash_rtx): Same.

	* cse.c (canon_reg): Handle vectors.
	(fold_rt): Same.
	(cse_process_notes): Same.
	(count_reg_usage): Same.
	(canon_hash): Same.

	* alias.c (nonlocal_mentioned_p): Add case for CONST_VECTOR.

	* combine.c (mark_used_regs_combine): Add case for CONST_VECTOR.

	* emit-rtl.c (init_emit_once): Generate const0_rtx for vectors.
	(gen_rtx): Handle CONST_VECTOR.
	(gen_const_vector_0): New.
	(copy_rtx_if_shared): CONST_VECTORs can be shared.
	(reset_used_flags): Same.
	(copy_insn_1): Same.
	(initializer_constant_valid_p): Handle VECTOR_CST.

	* doc/c-tree.texi (Expression trees): Document VECTOR_CST.

	* doc/rtl.texi (Constants): Document const_vector.
	(CONST0_RTX): Update for vectors.
	(RTL sharing): Same.

	* print-tree.c (print_node): Add case for VECTOR_CST.

	* tree.h (TREE_VECTOR_CST_ELTS): New.
	(struct tree_vector): New.
	(union tree_node): Add vector node.
	(build_vector): Add prototype.

	* tree.def (VECTOR_CST): New.

	* tree.c (build_vector): New.

	* expmed.c (make_tree): Handle CONST_VECTOR.

	* rtl.h (CONSTANT_P): CONST_VECTORs are constants too.
	(CONST_VECTOR_ELT): New.
	(CONST_VECTOR_NUNITS): New.

	* machmode.h (GET_MODE_INNER): New.
	(DEF_MACHMODE): Accept 8th arg.

	* machmode.def: Add 8th argument for vector inner mode.
	Add inner vector modes for vectors.

	* rtl.def (VEC_CONST): Remove.
	(CONST_VECTOR): New.

	* expr.c (clear_storage): Allow vectors.
	(is_zeros_p): Handle VECTOR_CST.

	* varasm.c (output_constant_pool): Handle vectors.
	(rtx_const): Add veclo and vechi fields.
	(kind): Add RTX_VECTOR.
	(decode_rtx_const): Add case for vector.

	* config/rs6000/rs6000-protos.h: Add zero_constant.

	* config/rs6000/rs6000.c (rs6000_emit_move): Handle vector
	constants.  Force easy vector constants into memory.
	(easy_vector_constant): New.
	(emit_easy_vector_constant): New.
	(rs6000_legitimize_reload_address): Do not generate bad reloads on
	darwin.

	* config/rs6000/rs6000.md ("altivec_lvx"): Reflect what
	instruction does.
	("altivec_lvxl"): Same.
	(altivec_lvebx): Same.
	(altivec_lvehx): Same.
	(altivec_lvewx): Same.
	("*movv4si_const0"): New.
	("*movv4sf_const0"): New.
	("*movv8hi_const0"): New.
	("*movv16qi_const0"): New.

From-SVN: r49853

	* jump.c (never_reached_warning): Add finish argument.
	If finish is NULL, stop on CODE_LABEL, otherwise stop before first
	real insn after end.
	* rtl.h (never_reached_warning): Adjust prototype.
	* cse.c (cse_insn): Pass NULL as finish to never_reached_warning.
	* cfgrtl.c (flow_delete_block): Pass b->end as finish to
	never_reached_warning.

	* gcc.dg/Wunreachable-1.c: New test.
	* gcc.dg/Wunreachable-2.c: New test.

From-SVN: r49713

        * config/xtensa/elf.h: New file.
        * config/xtensa/lib1funcs.asm: New file.
        * config/xtensa/lib2funcs.S: New file.
        * config/xtensa/linux.h: New file.
        * config/xtensa/t-xtensa: New file.
        * config/xtensa/xtensa-config.h: New file.
        * config/xtensa/xtensa-protos.h: New file.
        * config/xtensa/xtensa.c: New file.
        * config/xtensa/xtensa.h: New file.
        * config/xtensa/xtensa.md: New file.
        * config.gcc (xtensa-*-elf*): New target.
        (xtensa-*-linux*): New target.
        * cse.c (canon_hash): Compare rtx pointers instead of register
        numbers.  This is required for the Xtensa port.
        * integrate.c (copy_insn_list): Handle case where the static
        chain is in memory and the memory address has to be copied to
        a register.
        * doc/invoke.texi (Option Summary): Add Xtensa options.
        (Xtensa Options): New node.
        * doc/md.texi (Machine Constraints): Add Xtensa machine constraints.
        * gcc.c-torture/compile/20001226-1.x: xfail for Xtensa.

From-SVN: r49155

	* cse.c: Fix formatting.
	* dwarf2asm.c: Likewise.
	* dwarf2out.c: Likewise.
	* explow.c: Likewise.
	* expmed.c: Likewise.
	* function.c: Likewise.
	* gcov.c: Likewise.
	* gencheck.c: Likewise.
	* genrecog.c: Likewise.
	* ggc-common.c: Likewise.
	* ggc-page.c: Likewise.
	* global.c: Likewise.

From-SVN: r48570

	* cse.c (true_dependence_in_rtx): New function.
	(invalidate): Use it.

	* c-common.h (GOTO_FAKE_P): New macro.
	* tree-inline.c (GOTO_FAKE_P): Set.
	* c-tree.texi (GOTO_FAKE_P): Document.

	* varasm.c (assemble_variable): Set reloc to 3 for error_mark
	containing pointers.
	(output_addressed_constants): Check for local/external relocations.
	* elfos.h (SELECT_SECTION): Classify data section.
	* tm.texi (SELECT_SECTION): Update documentation.

	* cfganal.c (flow_dfs_compute_reverse_add_bb): set visited bit.
	(flow_dfs_compute_reverse_execute): Add only unvisited blocks.

From-SVN: r47405

	* ChangeLog.0, ChangeLog.2, ChangeLog.3, ChangeLog.4, ChangeLog,
	FSFChangeLog.10, c-decl.c, cppfiles.c, cppinit.c, cpplex.c,
	cpplib.c, cppmain.c, cse.c, df.c, diagnostic.c, dominance.c,
	dwarf2out.c, dwarfout.c, emit-rtl.c, errors.c, except.c, except.h,
	explow.c, function.c, gcse.c, genrecog.c, predict.c, regmove.c,
	sched-rgn.c, ssa-ccp.c, stmt.c, toplev.c: Fix spelling errors.

From-SVN: r47279

From-SVN: r46824

	* emit-rtl.c (set_unique_reg_note): Don't create REG_EQUAL or
	REG_EQUIV notes for ASM_OPERANDS.  Return the new note (if any).
	* rtl.h (set_unique_reg_note): Change return value.
	* gcse.c (try_replace_reg): Use set_unique_reg_note.
	* cse.c (cse_insn): Likewise.
	* expr.c (emit_move_insn): Likewise.
	* explow.c (force_reg): Likewise.
	* local-alloc (update_equiv_regs): Likewise.
	* loop.c (move_moveables, load_mems): Likewise.
	* reload (find_reloads): Likewise.

	* gcc.dg/20011029-2.c: New test.

From-SVN: r46636

* cse.c (check_for_label_ref): Don't require REG_LABEL notes for
non-local label_refs.

From-SVN: r46555

2001-10-10  Stan Shebs  <shebs@apple.com>

        * alias.c: Remove uses of "register" specifier in declarations
        of arguments and local variables.
        * c-common.c: Ditto.
        * c-convert.c: Ditto.
        * c-decl.c: Ditto.
        * c-format.c: Ditto.
        * c-semantics.c: Ditto.
        * c-typeck.c: Ditto.
        * caller-save.c: Ditto.
        * calls.c: Ditto.
        * cfg.c: Ditto.
        * cfgbuild.c: Ditto.
        * cfgrtl.c: Ditto.
        * collect2.c: Ditto.
        * combine.c: Ditto.
        * convert.c: Ditto.
        * cppexp.c: Ditto.
        * cppfiles.c: Ditto.
        * cse.c: Ditto.
        * dbxout.c: Ditto.
        * defaults.h: Ditto.
        * df.c: Ditto.
        * dwarf2out.c: Ditto.
        * dwarfout.c: Ditto.
        * emit-rtl.c: Ditto.
        * explow.c: Ditto.
        * expmed.c: Ditto.
        * expr.c: Ditto.
        * final.c: Ditto.
        * fix-header.c: Ditto.
        * floatlib.c: Ditto.
        * flow.c: Ditto.
        * fold-const.c: Ditto.
        * function.c: Ditto.
        * gcc.c: Ditto.
        * gcse.c: Ditto.
        * gen-protos.c: Ditto.
        * genattrtab.c: Ditto.
        * gencheck.c: Ditto.
        * genconfig.c: Ditto.
        * genemit.c: Ditto.
        * genextract.c: Ditto.
        * genflags.c: Ditto.
        * gengenrtl.c: Ditto.
        * genoutput.c: Ditto.
        * genpeep.c: Ditto.
        * genrecog.c: Ditto.
        * gensupport.c: Ditto.
        * global.c: Ditto.
        * gmon.c: Ditto.
        * graph.c: Ditto.
        * haifa-sched.c: Ditto.
        * hard-reg-set.h: Ditto.
        * hash.c: Ditto.
        * integrate.c: Ditto.
        * jump.c: Ditto.
        * lists.c: Ditto.
        * local-alloc.c: Ditto.
        * loop.c: Ditto.
        * mips-tdump.c: Ditto.
        * mips-tfile.c: Ditto.
        * optabs.c: Ditto.
        * prefix.c: Ditto.
        * print-rtl.c: Ditto.
        * read-rtl.c: Ditto.
        * real.c: Ditto.
        * recog.c: Ditto.
        * reg-stack.c: Ditto.
        * regclass.c: Ditto.
        * regmove.c: Ditto.
        * reload.c: Ditto.
        * reload1.c: Ditto.
        * reorg.c: Ditto.
        * resource.c: Ditto.
        * rtl.c: Ditto.
        * rtlanal.c: Ditto.
        * scan.c: Ditto.
        * sched-deps.c: Ditto.
        * sched-rgn.c: Ditto.
        * sdbout.c: Ditto.
        * simplify-rtx.c: Ditto.
        * stmt.c: Ditto.
        * stor-layout.c: Ditto.
        * toplev.c: Ditto.
        * tradcif.y: Ditto.
        * tradcpp.c: Ditto.
        * tree.c: Ditto.
        * unroll.c: Ditto.
        * varasm.c: Ditto.
        * xcoffout.c: Ditto.

From-SVN: r46173

	* calls.c: Fix formatting.
	* c-decl.c: Likewise.
	* cfgcleanup.c: Likewise.
	* combine.c: Likewise.
	* cppfiles.c: Likewise.
	* cpplib.c: Likewise.
	* cppmacro.c: Likewise.
	* crtstuff.c: Likewise.
	* cse.c: Likewise.
	* dwarf2out.c: Likewise.
	* expmed.c: Likewise.
	* expr.c: Likewise.
	* fold-const.c: Likewise.
	* function.c: Likewise.
	* gcse.c: Likewise.
	* genattrtab.c: Likewise.
	* ggc-page.c: Likewise.
	* integrate.c: Likewise.
	* libgcc2.c: Likewise.
	* loop.c: Likewise.
	* optabs.c: Likewise.
	* profile.c: Likewise.
	* protoize.c: Likewise.
	* real.c: Likewise.
	* recog.c: Likewise.
	* reload1.c: Likewise.
	* reload.c: Likewise.
	* reorg.c: Likewise.
	* resource.c: Likewise.
	* sched-rgn.c: Likewise.
	* sdbout.c: Likewise.
	* stmt.c: Likewise.
	* toplev.c: Likewise.
	* varasm.c: Likewise.

From-SVN: r46145