2006-12-12  Andrew Macleod  <amacleod@redhat.com>

	PR tree-optimization/30159
	* tree-ssa-coalesce.c (coalesce_ssa_name): Process single ssa_name 
	functions in case a default_def coalesce is required.

From-SVN: r119792

	PR libstdc++/11953
	* gthr-posix.h (_REENTRANT): Only define if __osf__ is defined.

	* config/ia64/linux.h (CPP_SPEC): Define.
	* config/s390/linux.h (CPP_SPEC): Define.

From-SVN: r119788

	PR rtl-optimization/27761
	* combine.c (try_combine): Don't create a useless garbage SET
	if PATTERN (i2) is a PARALLEL.  If added_sets_1, save
	PATTERN (i1) resp. SET from i1src to i1dest in i1pat
	and use it to prevent accidental modification of i1src.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>

From-SVN: r119785

2006-12-12  Benjamin Kosnik  <bkoz@redhat.com>

	PR libstdc++/28265
	* crossconfig.m4: Remove GLIBCXX_CHECK_ICONV_SUPPORT call for
	mingw crosses.
	* configure: Regenerate.

From-SVN: r119782

	* tree-vect-analyze.c (vect_analyze_data_ref_access): Add another check
	for stores with gaps.
	* tree-vect-transform.c (vect_permute_store_chain): Create
	interleave_high or interleave_low according to the endianess.

From-SVN: r119779

2006-12-12  Benjamin Kosnik  <bkoz@redhat.com>

	PR libstdc++/26497
	* crossconfig.m4: Add GLIBCXX_CHECK_LINKER_FEATURES for Solaris.
	* acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Set
	glibcxx_gnu_ld_version only when with GNU ld confirmed.	
	* configure: Regenerate.

From-SVN: r119778

2006-12-12  Richard Guenther  <rguenther@suse.de>

	PR middle-end/30147
	* fold-const.c (fold_read_from_constant_string): Only fold read
	from constant string if the result type is integer.

	* gfortran.fortran-torture/compile/pr30147.f90: New testcase.

From-SVN: r119776

	* config/rs6000/t-vxworks: Remove assignment to LIB2FUNCS_EXTRA.

From-SVN: r119773

	* config/vxlib.c: Extract tls related routines into ...
	* config/vxlib-tls.c: New file. 
	* config/t-vxworks: Add vxlib-tls.c to LIB2FUNCS_EXTRA.

From-SVN: r119771

2006-12-12  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	* decl.c (build_enumerator): Update error message to match C
	front-end.

From-SVN: r119770

2006-12-12  Olivier Hainque  <hainque@adacore.com>

	* fixincludes/mkfixinc.sh: Add "*-*-vxworks*" to the list of
	targets for which a no-op fixer is appropriate.

From-SVN: r119769

	* config/spu/spu.opt (mfixed-range): New option.
	* config/spu/spu.h (spu_fixed_range_string): Declare.
	* config/spu/spu.c (spu_override_options): Handle -mfixed-range.
	(fix_range): New function.
	* doc/invoke.texi (SPU Options): Document -mfixed-range.
	* testsuite/gcc.target/spu/fixed-range.c: New.
	* testsuite/gcc.target/spu/fixed-range-bad.c: Ditto.

Co-Authored-By: Ben Elliston <bje@au.ibm.com>

From-SVN: r119768

From-SVN: r119767

2006-12-11  H.J. Lu  <hongjiu.lu@intel.com>

	PR middle-end/17982
	PR middle-end/20218
	* cgraphunit.c (cgraph_optimize): Remove call to
	process_pending_assemble_externals.

	* config/elfos.h (ASM_OUTPUT_EXTERNAL): New.

	* config/ia64/hpux.h (TARGET_ASM_FILE_END): Removed.

	* config/ia64/ia64.c (ia64_asm_output_external): Rewritten.
	(ia64_hpux_add_extern_decl): Removed.
	(ia64_hpux_file_end): Likewise.
	(extern_func_list): Likewise.
	(extern_func_head): Likewise.

	* output.h (assemble_external): Update comments.
	(default_elf_asm_output_external): New.
	(maybe_assemble_visibility): New.

	* toplev.c (compile_file): Update comment.

	* varasm.c (assemble_external): Always put it on
	pending_assemble_externals.
	(maybe_assemble_visibility): Make it extern and return int.
	(default_elf_asm_output_external): New.

From-SVN: r119764

tree-ssa-structalias.c (handle_ptr_arith): Return false when we can't handle the pointer arithmetic.

2006-12-11  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-structalias.c (handle_ptr_arith): Return false when we
	can't handle the pointer arithmetic.

From-SVN: r119763

2006-12-11  Diego Novillo  <dnovillo@redhat.com>

	* doc/tree-ssa.texi: Update documentation for virtual operands
	and the use of push_stmt_changes/pop_stmt_changes.
	* doc/invoke.texi: Remove documentation for params
	global-var-threshold.
	Update documentation on max-aliased-vops.

	* tree-into-ssa.c: Cleanup comments, variables and
	spacing in various functions.
	(regs_to_rename): Declare.
	(mem_syms_to_rename): Declare.
	(dump_update_ssa): Declare.
	(debug_update_ssa): Declare.
	(dump_names_replaced_by): Declare.
	(debug_names_replaced_by): Declare.
	(dump_def_blocks): Declare.
	(debug_def_blocks): Declare.
	(dump_defs_stack): Declare.
	(debug_defs_stack): Declare.
	(dump_currdefs): Declare.
	(debug_currdefs): Declare.
	(mark_def_sites): Do not handle virtual operands.
	(compute_idf): Rename from find_idf.  Update users.
	(register_new_def): Make local.  Convert second argument
	to 'tree'.
	Use BLOCK_DEFS_STACK directly.
	If pushing a non-register, also push the underlying
	symbol.
	(rewrite_stmt): Do not handle virtual operands.
	(dump_tree_ssa): Call dump_def_blocks, dump_defs_stack,
	dump_currdefs and dump_tree_ssa_stats.
	(dump_tree_ssa_stats): Also dump REPL_TBL.
	(replace_use): Remove.  Update all users to call SET_USE
	instead.
	(rewrite_blocks): Move code to free memory to
	fini_ssa_renamer.
	(mark_def_site_blocks): Move initialization code to
	init_ssa_renamer.
	(init_ssa_renamer): New.
	(fini_ssa_renamer): New.
	(rewrite_into_ssa): Call them.
	(prepare_block_for_update): Process SSA_OP_ALL_USES first
	and SSA_OP_ALL_DEFS later.  Do not process virtual
	operands separately.
	(dump_update_ssa): Call dump_decl_set.
	(init_update_ssa): Initialize regs_to_rename and
	mem_syms_to_rename.
	Call init_ssa_renamer.
	(delete_update_ssa): Call fini_ssa_renamer.
	Free blocks_with_phis_to_rewrite.
	(mark_sym_for_renaming): If the variable has
	sub-variables, also mark them.
	If the variable belongs to a partition, also mark it.
	(mark_set_for_renaming): Call mark_sym_for_renaming on
	every symbol in the set.
	(switch_virtuals_to_full_rewrite): Call
	mark_set_for_renaming.
	(update_ssa): Separate syms_to_rename into regs_to_rename
	and mem_syms_to_rename.

	* tree-dump.c (dump_options): Add TDF_MEMSYMS.
	* tree-pretty-print.c (debug_generic_expr): Add TDF_MEMSYMS.
	(debug_generic_stmt): Likewise.
	(debug_tree_chain): Likewise.
	(dump_symbols): New.
	(dump_generic_node): Check for TDF_MEMSYMS.
	Handle MEMORY_PARTITION_TAG.
	If the statement references memory and TDF_MEMSYMS is
	given, call dump_symbols.
	Indicate default names with (D).
	(dump_vops): Update for new virtual operator format.

	* tree.c (init_ttree): Add MEMORY_PARTITION_TAG to
	tree_contains_struct.
	(tree_code_size): Handle MEMORY_PARTITION_TAG.
	(tree_node_structure): Likewise.
	(needs_to_live_in_memory): Handle SSA names.
	* tree.h (MTAG_P): Likewise.
	(struct tree_memory_partition_tag): Declare.
	(MPT_SYMBOLS): Define.
	(union tree_node): Add field 'mpt'.
	* treestruct.def (TS_MEMORY_PARTITION_TAG): Define.
	* tree.def (MEMORY_PARTITION_TAG): Define.

	* tree-pass.h (TDF_MEMSYMS): Define.

	* params.h (GLOBAL_VAR_THRESHOLD): Remove.

	* tree-ssa-alias.c: Include pointer-set.h
	(struct alias_map_d): Remove fields total_alias_vops,
	grouped_p and may_aliases.  Update all users.
	(struct mp_info_def): Declare.
	(mp_info_t): New type.
	(get_smt_for): Rename from get_tmt_for.  Update all
	users.
	(add_may_alias): Add argument ALREADY_ADDED.  If given,
	use it to avoid adding duplicate entries to alias sets.
	(replace_may_alias): Remove.  Update all users.
	(total_alias_vops_cmp): Remove.  Update all users.
	(group_aliases_into): Remove.  Update all users.
	(tree_pointer_compare): Remove.  Update all users.
	(compact_name_tags): Remove.  Update all users.
	(group_aliases): Remove.  Update all users.
	(mark_non_addressable): Move from tree-flow-inline.h.
	Remove the symbol from the partition holding it, if
	needed.
	(dump_mp_info): New.
	(debug_mp_info): New.
	(sort_mp_info): New.
	(create_partition_for): New.
	(rewrite_alias_set_for): New.
	(compute_memory_partitions): New.
	(compute_may_aliases): Call it.
	(init_alias_info): If computing aliases for the first
	time, mark every memory symbol for renaming.
	(have_common_aliases_p): New.
	(compute_flow_insensitive_aliasing): Call it.
	(setup_pointers_and_addressables): Do not cache
	num_referenced_vars.
	For register promoted symbols, mark their former
	partition for renaming.
	(maybe_create_global_var): Only create .GLOBAL_VAR if
	there are no call-clobbered variables and a mix of pure
	and non-pure functions were found.
	(may_alias_p): Tidy comments.
	(create_tag_raw): Remove unused variable new_type.
	(dump_alias_info): call dump_memory_partitions.
	(dump_points_to_info_for): Call dump_decl_set.
	(may_be_aliased): Tidy comments and formatting.

	* timevar.def (TV_MEMORY_PARTITIONING): Define.
	* tree-vectorizer.c (vect_memsyms_to_rename): Rename from
	vect_vnames_to_rename.  Set DECL_UIDs instead of SSA name
	versions in it.
	(slpeel_update_phi_nodes_for_guard1): Ignore memory PHIs.
	* tree-vect-transform.c (vect_transform_loop): Call
	mark_set_for_renaming with vect_memsyms_to_rename.
	* tree-flow-inline.h (zero_imm_uses_p): New.
	(memory_partition): New.
	(set_memory_partition): New.
	(factoring_name_p): New.
	(symbol_mem_tag): New.  Update every function that used
	to access the annotation directly.
	(set_symbol_mem_tag): Likewise.

	* tree-ssa-copy.c (may_propagate_copy): Allow copies
	between a partition and a symbol as long as the symbol
	belongs to the partition.
	(merge_alias_info): Ignore merge requests when memory
	partitions are involved.

	* tree-ssa.c (verify_ssa_name): Check that default
	definitions have empty defining statements.
	(verify_use): Remove argument IS_VIRTUAL.
	Don't call verify_ssa_name.
	(verify_phi_args): Call verify_ssa_name.
	(verify_flow_insensitive_alias_info): Handle MPTs.
	(verify_flow_sensitive_alias_info): Likewise.
	(verify_name_tags): Likewise.
	(verify_call_clobbering): Likewise.
	(verify_ssa): Check for VOPs only after aliasing
	information is available.
	Check virtuals and real operands separately.
	Call verify_ssa_name on every operand.
	(stmt_references_memory_p): Move to tree-ssa-operands.c.
	(walk_use_def_chains_1): Guard against NULL PHI
	arguments.

	* tree-ssa-operands.c (stmt_references_memory_p): Move from
	tree-ssa.c.
	(get_mpt_for): New.
	(dump_memory_partitions): New.
	(debug_memory_partitions): New.

	* tree-flow.h (struct var_ann_d): Add field mpt.
	(struct stmt_ann_d): Add bitfield references_memory.
	* Makefile.in (tree-ssa-structalias.o): Include
	pointer-set.h
	(tree-ssa-alias.o): Likewise.
	* tree-ssa-structalias.c: (update_alias_info): Use
	STORED_SYMS to determine which variables are being
	written to by the store operation.
	* tree-ssa-structalias.h (struct alias_info)
	<total_alias_vops>: Remove.  Update all users.
	<written_vars>: Change to a pointer set.  Update all
	users.
	<dereferenced_ptrs_store>: Likewise.
	<dereferenced_ptrs_load>: Likewise.
	(NUM_REFERENCES): Remove.  Update all users.
	(NUM_REFERENCES_CLEAR): Remove.  Update all users.
	(NUM_REFERENCES_INC): Remove.  Update all users.
	(NUM_REFERENCES_SET): Remove.  Update all users.

	* params.def (PARAM_GLOBAL_VAR_THRESHOLD): Remove.
	Update all users.
	(PARAM_MAX_ALIASED_VOPS): Set to 10.
	* tree-ssanames.c (make_ssa_name): Initialize
	SSA_NAME_IS_DEFAULT_DEF to 0.

2006-12-11  Aldy Hernandez  <aldyh@redhat.com>

	* tree-ssa-dse.c (aggregate_vardecl_d): New.
	(dse_global_data): Add aggregate_vardecl field.
	(dse_possible_dead_store_p): New.
	Add prev_defvar variable.
	Allow immediate uses and previous immediate uses to differ
	if they are setting different parts of the whole.
	(get_aggregate_vardecl): New.
	(dse_record_partial_aggregate_store): New.
	(dse_whole_aggregate_clobbered_p): New.
	(dse_partial_kill_p): New.
	(dse_optimize_stmt): Abstract code checking a possible dead store
	into new function dse_possible_dead_store_p().
	Call dse_maybe_record_aggregate_store().
	When checking whether a STMT and its USE_STMT refer to the
	same memory address, check also for partial kills that clobber
	the whole.
	Move some variable definitions to the block where they are used.
	(aggregate_vardecl_hash): New.
	(aggregate_vardecl_eq): New.
	(aggregate_vardecl_free): New.
	(aggregate_whole_store_p): New.
	(tree_ssa_dse): Initialize and free aggregate_vardecl.
	Mark which aggregate stores we care about.

2006-12-11  Andrew Macleod  <amacleod@redhat.com>

	* tree-ssa-operands.h (struct vuse_element_d): Declare.
	(vuse_element_t): Declare.
	(struct vuse_vec_d): Declare.
	(vuse_vec_p): Declare.
	(VUSE_VECT_NUM_ELEM): Define.
	(VUSE_VECT_ELEMENT_NC): Define.
	(VUSE_ELEMENT_PTR_NC): Define.
	(VUSE_ELEMENT_VAR_NC): Define.
	(VUSE_VECT_ELEMENT): Define.
	(VUSE_ELEMENT_PTR): Define.
	(VUSE_ELEMENT_VAR): Define.
	(struct maydef_optype_d) <use_var>: Remove.
	<use_ptr>: Remove.
	<usev>: Add.
	(struct vuse_optype_d) <kill_var>: Remove.
	<use_ptr>: Remove.
	<usev>: Add.
	(struct mustdef_optype_d) <kill_var>: Remove.
	<use_ptr>: Remove.
	<usev>: Add.
	(VUSE_OP_PTR): Add argument.  Use VUSE_ELEMENT_PTR.
	(VUSE_OP): Add argument.  Use VUSE_ELEMENT_PTR.
	(VUSE_NUM): Define.
	(VUSE_VECT): Define.
	(MAYDEF_OP_PTR): Add argument.  Use VUSE_OP_PTR.
	(MAYDEF_OP): Add argument.  Use VUSE_OP.
	(MAYDEF_NUM): Define.
	(MAYDEF_VECT): Define.
	(MUSTDEF_KILL_PTR): Use VUSE_OP_PTR.
	(MUSTDEF_KILL): Use VUSE_OP.
	(MUSTDEF_NUM): Define.
	(MUSTDEF_VECT): Define.
	(realloc_maydef): Declare.
	(realloc_vuse): Declare.
	(struct ssa_operand_iterator_d) <vuse_index>: Add.
	<mayuse_index>: Add.
	(LOADED_SYMS): Define.
	(STORED_SYMS): Define.
	(FOR_EACH_SSA_MUSTDEF_OPERAND): Call op_iter_next_mustdef.
	* tree-into-ssa.c: Adapt for multi-operand V_MAY_DEF and VUSE
	operators.
	* tree-pretty-print.c: Likewise.
	* tree-ssa-dse.c: Likewise.
	* tree-flow-inline.h: Likewise.
	(op_iter_next_mustdef): New.
	* tree-ssa-operands.c: Likewise.
	(ALLOC_OPTYPE): Remove.
	Update all users.
	(alloc_def): New.
	(alloc_use): New.
	(alloc_maydef): New.
	(alloc_vuse): New.
	(alloc_mustdef): New.
	(realloc_maydef): New.
	(realloc_vuse): New.

2006-12-11  Aldy Hernandez  <aldyh@redhat.com>

	* tree-ssa-operands.c: Remove build_v_must_defs.
	(init_ssa_operands): Delete build_v_must_defs.
	(finalize_ssa_v_must_def_ops): Remove.
	(finalize_ssa_v_must_defs): Remove.
	(finalize_ssa_stmt_operands): Do not call
	finalize_ssa_v_must_defs.
	(start_ssa_stmt_operands): Do not check build_v_must_defs.
	(append_v_must_def): Delete.
	(copy_virtual_operands): Do not copy V_MUST_DEFs.
	(get_modify_expr_operands): Remove reference to V_MUST_DEF from
	comment.  Remove opf_kill_def.
	(build_ssa_operands): Remove references to v_must_defs.
	(copy_virtual_operands): Same.
	(copy_virtual_operands): Same.
	(fini_ssa_operands): Same.
	(free_ssa_operands): Same.
	(add_mustdef_op): Remove.
	Remove mustdef_optype_p.
	(alloc_mustdef): Remove.
	Remove references to V_MUST_DEFs in comment at top of file.
	(get_expr_operands): Remove opf_kill_def.
	(opf_kill_def): Remove.
	(add_virtual_operand): Remove opf_kill_def.
	(get_indirect_ref_operands): Same.
	(get_tmr_operands): Same.

	* tree-vectorizer.c (rename_variables_in_bb): Remove
	SSA_OP_ALL_KILLS.

	* tree-ssa-loop-manip.c (find_uses_to_rename_stmt): Remove
	SSA_OP_ALL_KILLS.
	(check_loop_closed_ssa_stmt): Same.

	* tree-ssa.c (verify_def): Remove V_MUST_DEF from comment.
	(verify_use): Same.
	(verify_ssa): Remove V_MUST_DEFs traces.
	(verify_ssa): Remove SSA_OP_ALL_KILLS.

	* tree-into-ssa.c (mark_def_sites): Change SSA_OP_VMUSTDEF to
	SSA_OP_VMAYDEF.
	(rewrite_update_stmt): Remove SSA_OP_VIRTUAL_KILLS.
	(rewrite_stmt): Remove SSA_OP_ALL_KILLS.

	* tree-ssa-operands.h (struct stmt_operands_d): Remove V_MUST_DEF
	references.
	(MUSTDEF_OPS): Remove.
	(SSA_OP_VMUSTDEF): Remove.
	(FOR_EACH_SSA_MUSTDEF_OPERAND): Remove.
	(struct mustdef_optype_d): Remove.
	Remove mustdef_optype_p.
	(struct stmt_operands_d): Remove mustdef_ops.
	(ssa_operand_iterator_d): Remove mustdefs and mustkills.
	(SSA_OP_VIRTUAL_DEFS): Remove SSA_OP_VMUSTDEF.
	(MUSTDEF_RESULT_PTR): Remove.
	(MUSTDEF_RESULT): Remove.
	(MUSTDEF_KILL_PTR): Remove.
	(MUSTDEF_KILL): Remove.
	(MUSTDEF_NUM): Remove.
	(MUSTDEF_VECT): Remove.
	(SSA_OP_VIRTUAL_KILLS): Remove.
	(SSA_OP_ALL_VIRTUALS): Remove SSA_OP_VIRTUAL_KILLS.
	(SSA_OP_VMUSTKILL): Remove.
	(SSA_OP_ALL_KILLS): Remove.
	(SSA_OP_ALL_OPERANDS): Remove SSA_OP_ALL_KILLS.

	* tree-flow-inline.h (op_iter_init_def): Remove
	SSA_OP_VIRTUAL_KILLS.
	(delink_stmt_imm_use): Remove SSA_OP_ALL_KILLS.

	* tree-ssa-pre.c (compute_rvuse_and_antic_safe): Remove
	SSA_OP_VIRTUAL_KILLS.

	* tree-ssa-loop-im.c (determine_max_movement): Remove
	SSA_OP_VIRTUAL_KILLS.
	(gather_mem_refs_stmt): Same.
	(gather_mem_refs_stmt): Same.

	* tree-ssa-dce.c (mark_really_necessary_kill_operand_phis): Delete.
	(perform_tree_ssa_dce): Remove call to
	mark_really_necessary_kill_operand_phis.

	* tree-flow-inline.h (op_iter_init): Remove setting of mustdefs
	and mustkills.
	(op_iter_next_use): Do not check mustkills.
	(op_iter_next_def): Do not check mustdefs.
	(op_iter_next_tree): Do not check mustkills or mustdefs.
	(clear_and_done_ssa_iter): Do not set mustdefs or mustkills.
	(op_iter_next_maymustdef): Do not check mustkills.
	(op_iter_init_must_and_may_def): Remove SSA_OP_VMUSTKILL.
	(op_iter_init_mustdef): Remove.

	* tree-ssa-live.c (create_ssa_var_map): Change SSA_OP_VMUSTDEF to
	SSA_OP_VMAYDEF.

	* tree-ssa-dse.c (dse_optimize_stmt): Remove SSA_OP_VMUSTDEF.

	* tree-ssa-ccp.c: Remove V_MUST_DEF traces from comments.
	(visit_assignment): Same.

	* tree-ssa-copy.c (copy_prop_visit_assignment): Same.

	* tree-sra.c (mark_all_v_defs_1): Remove V_MUST_DEF from comment.

	* tree-outof-ssa.c (check_replaceable): Remove SSA_OP_VMUSTDEF.

	* tree-pretty-print.c (dump_vops): Remove printing of V_MUST_DEF.
	Remove kill_p variable.

	* tree-dfa.c (struct dfa_stats_d): Remove num_v_must_defs.
	(dump_dfa_stats): Remove code related to V_MUST_DEFs.
	(collect_dfa_stats_r): Do not set num_v_must_defs.
	(mark_new_vars_to_rename): Remove v_must_defs_{before,after}
	code.

	* tree-into-ssa.c (mark_def_sites): Change SSA_OP_VMUSTKILL to
	SSA_OP_VMAYUSE.

	* tree-ssa-pre.c (compute_rvuse_and_antic_safe): Remove
	SSA_OP_VMUSTDEF and SSA_OP_VMUSTKILL.

	* tree-ssa-propagate.c (stmt_makes_single_store): Remove
	SSA_OP_VMUSTDEF.

From-SVN: r119760

From-SVN: r119757

re PR libstdc++/28125 (Cannot build cross compiler for Solaris: configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES)

2006-12-11  Benjamin Kosnik  <bkoz@redhat.com>

	PR libstdc++/28125
	* acinclude.m4 (GLIBCXX_CHECK_ICONV_SUPPORT): Remove link test, ie
	AC_CHECK_LIB for libiconv. Instead, use bits of AM_ICONV.
        * configure: Regenerate.
        * scripts/testsuite_flags.in (cxxldflags): Add LIBICONV bits.

From-SVN: r119749

	PR rtl-optimization/30113
	* loop-iv.c (implies_p): Require the mode of the operands to be
	scalar.

From-SVN: r119748

	* tree-ssa-operands.h (create_ssa_artificial_load_stmt):
	Rename from create_ssa_artficial_load_stmt.  Update all users.
	* tree-into-ssa.c (register_new_def): Make static.
	* tree.c (is_global_var): Handle SSA_NAMEs.
	* tree.h (SSA_NAME_IS_DEFAULT_DEF): Define.  Update all users
	that used to call gimple_default_def.
	* tree-ssa-operands.c (push_stmt_changes): New.
	(pop_stmt_changes): New.  Update every pass that modifies
	statements to bracket modifications with
	push_stmt_changes/pop_stmt_changes.
	(discard_stmt_changes): New.
	* tree-ssa-dom.c (stmts_to_rescan): Change to stack of
	'tree *' instead of 'tree'.  Update all users.
	* tree-flow-inline.h (zero_imm_uses_p): New.
	(symbol_mem_tag): New.  Update every function that used
	to access the annotation directly.
	(set_symbol_mem_tag): Likewise.
	* tree-dfa.c (dump_variable): Always show the escape mask.
	(mark_symbols_for_renaming): Rename from
	mark_new_vars_to_rename.  Update all users.
	Only mark to rename naked symbols in real and virtual
	operands.

From-SVN: r119746

From-SVN: r119745

varasm.c (elf_record_gcc_switches): Cast second argument of ASM_OUTPUT_SKIP to unsigned HOST_WIDE_INT.

	* varasm.c (elf_record_gcc_switches): Cast second argument of
	ASM_OUTPUT_SKIP to unsigned HOST_WIDE_INT.

From-SVN: r119744

From-SVN: r119742

	* tree-phinodes.c (remove_phi_node): Add argument
	RELEASE_LHS_P.  If given, release the SSA name on the LHS of
	the PHI node.
	Update all users.
	* tree-ssa-dce.c: Remove forward declarations for static
	functions.  Re-arrange functions bodies as needed.
	(find_obviously_necessary_stmts): Never mark PHI nodes as
	obviously necessary.

From-SVN: r119740

2006-12-11  Carlos O'Donell  <carlos@codesourcery.com>

	* config/arm/elf.h (MAX_OFILE_ALIGNMENT): Remove definition.

From-SVN: r119739

	* value-prof.c (tree_stringops_transform): New.
	(tree_value_profile_transformations): Require count to be non-zero;
	call stringop transform; reset stmt BSI after BB changed.
	(tree_divmod_fixed_value, tree_mod_pow2): Don't emit unnecesary label.
	(interesting_stringop_to_profile_p, tree_stringop_fixed_value): New.
	(tree_stringops_values_to_profile): New.
	(tree_values_to_profile): Call tree_stringops_values_to_profile.
	* tree.h (build_string_literal): Tidy prototype.
	(validate_arglist, builtin_memset_read_str, get_pointer_alignment):
	Declare.
	* builtins.c (validate_arglist, builtin_memset_read_str,
	get_pointer_alignment): Export.

From-SVN: r119735

	PR target/30120
	Revert:
	2006-11-15  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/i386.opt: New target option -mx87regparm.

	* config/i386/i386.h (struct ix86_args): Add x87_nregs, x87_regno,
	float_in_x87: Add new variables. mmx_words, sse_words: Remove.
	(X87_REGPARM_MAX): Define.

	* config/i386/i386.c (override_options): Error out for
	-mx87regparm but no 80387 support.
	(ix86_attribute_table): Add x87regparm.
	(ix86_handle_cconv_attribute): Update comments for x87regparm.
	(ix86_comp_type_attributes): Check for mismatched x87regparm types.
	(ix86_function_x87regparm): New function.
	(ix86_function_arg_regno_p): Add X87_REGPARM_MAX 80387 floating
	point registers.
	(init_cumulative_args): Initialize x87_nregs and float_in_x87
	variables.
	(function_arg_advance): Process x87_nregs and x87_regno when
	floating point argument is to be passed in 80387 register.
	(function_arg): Pass XFmode arguments in 80387 registers for local
	functions.  Pass SFmode and DFmode arguments to local functions
	in 80387 registers when flag_unsafe_math_optimizations is set.

	* reg-stack.c (convert_regs_entry): Disable NaN load for
	stack registers that are used for argument passing.

	* doc/extend.texi: Document x87regparm function attribute.
	* doc/invoke.texi: Document -mx87regparm.

testsuite/ChangeLog:

	PR target/30120
	* gcc.target/i386/pr30120.c: New test.

	Revert:
	2006-11-15  Uros Bizjak  <ubizjak@gmail.com>

	* gcc.target/i386/x87regparm-1.c: New test.
	* gcc.target/i386/x87regparm-2.c: New test.
	* gcc.target/i386/x87regparm-3.c: New test.
	* gcc.target/i386/x87regparm-4.c: New test.

From-SVN: r119734

2006-12-11  Richard Guenther  <rguenther@suse.de>
	    Paolo Carlini  <pcarlini@suse.de>

	* include/ext/pb_ds/detail/pat_trie_/traits.hpp: Qualify types.
	* include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp: Likewise.
	* include/ext/rope: Likewise.
	* include/bits/stl_tree.h (struct _Rb_tree): Change the _Link_type
	typedefs to use _Rb_tree_node<_Val> directly.
	(_M_get_node, _M_put_node): Use _Link_type.

Co-Authored-By: Paolo Carlini <pcarlini@suse.de>

From-SVN: r119732

	Move all varpool routines out of cgraph/cgraphunit to varpool.c
	* cgraph.c: Update comments.
	(cgraph_varpool_hash,
	cgraph_varpool_nodes, cgraph_varpool_last_needed_node
	cgraph_varpool_node_name, cgraph_varpool_node,
	cgraph_varpol_mode_for_asm, cgraph_varpool_mark_needed_node,
	cgraph_variable_initializer_availability): Move to
	varpool.c and drop cgraph_ prefixes.
	(cgraph_varpool_enqueue_needed_node, cgraph_varpool_reset_queue,
	cgraph_varpool_first_unanalyzed_node, cgraph_varpool_finalize_decl):
	move to varpool.c; drop cgraph_ prefix; make static.
	(dump_cgraph_varpool_node): Move to varpool.c under name
	dump_varpool_node.
	(dump_varpool, hash_varpool_node, eq_varpool_node,
	decide_is_variable_needed): Move to varpool.c
	(decl_assembler_name_equal): Move to tree.c.
	(availability_names): Rename to ...
	(cgraph_availability_names): ... this one.
	(dump_cgraph_node): Update.
	* cgraph.h: Reorder declarations now in varpool.c
	(cgraph_vailablity_names): Declare.
	(struct cgraph_varpool_node): Rename to ...
	(struct varpool_node): ... this one.
	(cgraph_varpool_first_unanalyzed_node, cgraph_varpool_nodes_queue,
	cgraph_varpool_first_unanalyzed_node, cgraph_varpool_node,
	cgraph_varpool_node_for_asm, cgraph_varpool_mark_needed_node,
	cgraph_varpool_finalize_decl, cgraph_varpool_enqueue_needed_node,
	cgraph_varpool_reset_queue, cgraph_varpool_assemble_pending_decls,
	cgraph_variable_initializer_availability): Rename to ...
	(varpool_first_unanalyzed_node, varpool_nodes_queue,
	varpool_first_unanalyzed_node, varpool_node,
	varpool_node_for_asm, varpool_mark_needed_node,
	varpool_finalize_decl, varpool_enqueue_needed_node,
	varpool_assemble_pending_decls, variable_initializer_availability):
	Rename to ...
	* tree.c (decl_assembler_name_equal): Move here from cgraph.c.
	* tree.h (decl_assembler_name_equal): Declare.
	* omp-low.c (lower_omp_critical): Update.
	* ipa-reference (analyze_variable, static_execute): Likewise.
	* toplev.c (wrapup_global_declaration_2, compile_file): Update.
	* cgraphunit.c: Update comments.
	(cgraph_varpool_assembled_nodes_queue): Move to varpool.c under name
	varpool_assembled_nodes_queue.
	(cgraph_varpool_analyze_pending_decls): Move to varpool.c under name
	varpool_analyze_pending_decls.
	(cgraph_varpool_remove_unreferenced_decls): Move to varpool.c under name
	varpool_remove_unreferenced_decls.
	(record_reference): Update.
	(cgraph_create_edges): Update.
	(record_referneces_in_initializer): New function.
	(cgraph_varpool_assemble_decl): Move to varpool.c under name
	varpool_assemble_decl; make global.
	(cgraph_varpool_assemble_pending_decls): Move to varpool.c under name
	varpool_assemble_pending_decls.
	(process_function_and_variable_attributes, cgraph_finalize_compilation_unit,
	struct cgraph_order_sort, cgraph_output_in_order,
	cgraph_function_and_variable_invisibility, cgraph_optimize,
	cgraph_increase_alignment): Update.
	* dwarf2out.c (decls_for_scope): Likewise.
	* ipa-type-escape.c (analyze_variable, type_escape_execute): Likewise.
	* except.c (output_ttype): Likewise.
	* varasm.c (mark_decl_referenced): Likewise.
	(find_decl_and_mark_referenced, assemble_alias): update.
	* Makefile.in: Add varpool.c, gt-varpool.c and remove gt-cgraphunit.c
	* passes.c (rest_of_decl_compilation): Update.

	* cp/decl2.c (var_finalized_p): Update for renamed varpool functions.
	* fortran/f59-lang.c (gfc_expand_function): Update for renamed varpool functions.

From-SVN: r119731

	* tree-vect-patterns.c (vect_recog_dot_prod_pattern): Use
	GIMPLE_STMT_OPERAND.
	* tree-vect-transform.c (vect_permute_store_chain): Likewise.
	(vect_setup_realignment): Likewise.

From-SVN: r119730

	* configure.in:  Handle spu makefile frag.
	* config/mt-spu: New file.
	* Makefile.tpl (MAINT): Define
	(MAINTAINER_MODE_FALSE, MAINTAINER_MODE_TRUE): Define.
	* configure: Regenerate.
	* Makefile.in: Regenerate.

From-SVN: r119729

	* config.guess: Import latest version.
	* config.sub: Likewise.

From-SVN: r119728

	* config/spu/spu-elf.h (STARTFILE_SPEC): Update.
	(ENDFILE_SPEC): Likewise.
	* config/spu/spu.opt (mstdmain): New option.
	* config/spu/crti.asm: Remove.
	* config/spu/crtn.asm: Likewise.
	* config/spu/crt0.c: Likewise.
	* config/spu/crtend.c: Likewise.
	* config/spu/t-spu-elf (EXTRA_MULTILIB_PARTS): Remove crt0 files
	listed above.
	($(T)crti.o, $(T)crtn.o, $(T)crt1.o, $(T)crtend1.o): Remove.
	* doc/invoke.texi (SPU Options): Document -mstdmain.

Co-Authored-By: Ben Elliston <bje@au.ibm.com>

From-SVN: r119727

	* configure.in (spu-*-*): Don't skip target-libiberty.
	* configure: Regenerate.

From-SVN: r119726

From-SVN: r119724

	* doc/loop.texi: Document number_of_latch_executions and
	number_of_cond_exit_executions.
	* tree-scalar-evolution.c (compute_overall_effect_of_inner_loop,
	chrec_is_positive, number_of_iterations_for_all_loops,
	scev_const_prop): Use number_of_latch_executions.
	(set_nb_iterations_in_loop): Do not increase the value of the
	number of iterations.
	(number_of_iterations_in_loop): Renamed to ...
	(number_of_latch_executions): ... this.
	(number_of_exit_cond_executions): New function.
	* tree-scalar-evolution.h (number_of_iterations_in_loop): Declaration
	removed.
	(number_of_latch_executions, number_of_exit_cond_executions): Declare.
	* tree-ssa-loop-ivcanon.c (canonicalize_loop_induction_variables): Use
	number_of_latch_executions.
	* tree-data-ref.c (get_number_of_iters_for_loop): Use
	number_of_exit_cond_executions.
	* tree-vect-analyze.c (vect_get_loop_niters): Ditto.
	* cfgloop.h (struct loop): Improve description of the nb_iterations
	field.

	* gcc.dg/tree-ssa/loop-17.c: Update outcome.

From-SVN: r119718

2006-12-10  Daniel Berlin  <dberlin@dberlin.org>

	* tree-ssa-alias.c (compact_name_tags): Use sort_tags_by_id.
	(tree_pointer_compare): Remove.

From-SVN: r119714

	* tree-vrp.c (adjust_range_with_scev): Use get_chrec_loop.
	* loop-unswitch.c (unswitch_loops): Use FOR_EACH_LOOP.
	* tree-loop-linear.c (linear_transform_loops): Ditto.
	* tree-ssa-loop-im.c (determine_lsm): Ditto.
	* tree-ssa-loop-niter.c (estimate_numbers_of_iterations,
	free_numbers_of_iterations_estimates): Ditto.
	* tree_ssa_unswitch_loops (tree_ssa_unswitch_loops): Ditto.
	* tree-ssa-loop-ch.c (copy_loop_headers): Ditto.
	* tree-ssa-loop-ivopts.c (tree_ssa_iv_optimize): Ditto.
	* modulo-sched.c (sms_schedule): Ditto.
	* tree-ssa-loop-ivcanon.c (canonicalize_induction_variables,
	tree_unroll_loops_completely): Ditto.
	* predict.c (predict_loops): Ditto.
	* tree-if-conv.c (main_tree_if_conversion): Ditto.
	* loop-unroll.c (unroll_and_peel_loops, peel_loops_completely,
	decide_unrolling_and_peeling): Ditto.
	* cfgloopmanip.c (unloop): Use delete_loop.
	(place_new_loop): Access larray vector instead of parray.
	(create_preheaders, force_single_succ_latches,
	fix_loop_structure): Use FOR_EACH_LOOP and delete_loop..
	* loop-doloop.c (doloop_optimize_loops): Ditto.
	* loop-invariant.c (move_loop_invariants): Ditto.
	* tree-cfg.c (replace_uses_by): Ditto.
	* tree-ssa-loop-prefetch.c (tree_ssa_prefetch_arrays): Ditto.
	* tree-chrec.h (CHREC_VAR, CHREC_LEFT, CHREC_RIGHT, CHREC_VARIABLE):
	Moved to ...
	* tree.h (CHREC_VAR, CHREC_LEFT, CHREC_RIGHT, CHREC_VARIABLE):
	... here.
	* tree-scalar-evolution.c (chrec_contains_symbols_defined_in_loop,
	compute_overall_effect_of_inner_loop, chrec_is_positive): Use
	get_loop and get_chrec_loop.
	(number_of_iterations_for_all_loops): Use number_of_loops.
	(scev_initialize, scev_reset, scev_const_prop): Use FOR_EACH_LOOP.
	* tree-scalar-evolution.h (get_chrec_loop): New inline function.
	* cfgloopanal.c (mark_irreducible_loops): Use number_of_loops,
	and FOR_EACH_LOOP.
	* tree-chrec.c (evolution_function_is_invariant_rec_p,
	chrec_convert_1): Use get_loop and get_chrec_loop.
	* loop-init.c (loop_optimizer_init): Use number_of_loops.
	(loop_optimizer_init): Use FOR_EACH_LOOP.
	* tree-vectorizer.c (vect_loops_num): Removed.
	(vectorize_loops): Store number of loops locally.  Use
	FOR_EACH_LOOP and get_loop.
	* tree-vectorizer.h (vect_loops_num): Removed.
	* tree-data-ref.c (get_number_of_iters_for_loop): Use get_loop.
	(find_data_references_in_loop): Do not set parallel_p.
	* tree-data-ref.h: Do not declare VEC(loop_p).
	* cfgloop.c (flow_loops_dump, mark_single_exit_loops,
	verify_loop_structure): Use FOR_EACH_LOOP.
	(flow_loops_free): Use FOR_EACH_LOOP, free larray vector.
	(initialize_loops_parallel_p): Removed.
	(flow_loops_find): Push the loops into a vector.
	(delete_loop): New function.
	(cancel_loop): Use delete_loop.
	* cfgloop.h: Declare VEC(loop_p).
	(struct loop): Remove parallel_p field.
	(struct loops): Replace num and parray field by larray vector.
	Remove shared_headers field.
	(delete_loop): Declare.
	(get_loop, get_loops, number_of_loops, fel_next, fel_init,
	FOR_EACH_LOOP): New.
	* doc/loop.tex: Document new accessor functions.

From-SVN: r119713

2006-12-10  Andrew MacLeod  <amacleod@redhat.com>

	* common.opt (-ftree-lrs): Remove live range splitting option.
	* makefile.in: Add tree-ssa-coalesce.o and reduce header dependancies.
	* opts.c (decode_options): Remove flag_tree_live_range_split.
	* tree-flow.h (struct var_ann_d): Rename fields from root_ to base_.
	* tree-flow-inline.h (single_imm_use_p): New.  Check for single use.
	* tree-outof-ssa.c: Remove header files which aren't needed.
	(SSANORM_*): Remove flags.
	(print_exprs_edge, coalesce_abnormal_edges, coalesce_phi_operands, 
	coalesce_result_decls_and_copies, coalesce_asm_operands): Remove.
	(coalesce_ssa_name): Move to tree-ssa-coalesce.c.
	(assign_vars): Use Basevar instead of root_var structure.
	(replace_def_variable): Dont do anything if def is replaceable.
	(remove_ssa_form): Integrate functional changes.
	(rewrite_out_of_ssa): Remove live-range_split option.
	* tree-ssa-coalesce.c: New File for ssa-name coalescing.
	(coalesce_cost): Calculate the cost of a coalesce.
	(coalesce_cost_bb): Calculate the coalesce cost within a BB.
	(coalesce_cost_edge): Calculate the coalesce cost on an edge.
	(pop_cost_one_pair): Remove the best coalesce with cost 1 from the list.
	(pop_best_coalesce): Remove the best coalesce from the list.
	(coalesce_pair_map_hash): Calculate coalesce pair hash.
	(coalesce_pair_map_eq): Compare 2 coalesce pairs for hash function.
	(create_coalesce_list): Create a coalesce list object.
	(delete_coalesce_list): Free a coalesce list object.
	(find_coalesce_pair): Find matching pair in the coalesce list.
	(add_cost_one_coalesce): Add a coalesce to the "cost one" list.
	(add_coalesce): Add a coalesce to the coalesce list.
	(compare_pairs): Comparision function to determine pair sorted order.
	(num_coalesce_pairs): Number of coalesced pairs.
	(first_coalesce_pair, end_coalesce_pair_p, next_coalesce_pair):
	Coalesce pair iterator functions.
	(sort_coalesce_list): Sort coalesce pairs in order of expense.
	(dump_coalesce_list): Show coalesce list.
	(ssa_conflicts_new): Create an SSA conflict graph.
	(ssa_conflicts_delete): Delete an SSA conflict graph.
	(ssa_conflicts_test_p): Test for conflicts.
	(ssa_conflicts_add_one): Add a single conflict.
	(ssa_conflicts_add): Add a conflict pair.
	(ssa_conflicts_merge): Merge conflicts.
	(struct live_track_d): Struct for tracking live partitions.
	(new_live_track): Create new live_track object.
	(delete_live_track): Delete a live_track object.
	(live_track_remove_partition): Remove a partition from the live list.
	(live_track_add_partition): Add a partition from the live list.
	(live_track_clear_var): Take VAR from the live list.
	(live_track_live_p): Is var live?
	(live_track_process_use): Make var come alive.
	(live_track_process_def): Make var go dead, add conflicts.
	(live_track_init): Initialize to a live on exit set.
	(live_track_clear_base_vars): Clear live partitions.
	(build_ssa_conflict_graph): Build a conflict graph.
	(print_exprs): Common debug output routine.
	(abnormal_corrupt): Output info about a failed coalesce across an
	abnormal edge.
	(fail_abnormal_edge_coalesce): Output info about a failed MUST_COALESCE.
	(create_outofssa_var_map): Create a var map and coalesce list.
	(attempt_coalesce): Coalesce a pair.
	(coalesce_partitions): Coalesce all pairs in a coalesce list.
	(coalesce_ssa_name): Entry point.  Determine what ssa_names to coalesce.
	* tree-ssa-live.c: Remove header files which aren't needed.
	(var_map_base_init): New.  Initialize a basevar list.
	(var_map_base_fini): New.  Finish a basevar list.
	(init_var_map): Initialize new fields.
	(delete_var_map): Free new fields.
	(var_union): Use renamed fields.
	(compact_var_map): Remove.
	(partition_to_view_init): Use renamed fields, change order of an if.
	(partition_view_fini): Use renamed fields.
	(partition_view_normal): Create basevar list if requested.
	(partition_view_bitmap): Create a view based on a bitmap of partitions.
	(change_partition_var): Use renamed fields.
	(create_ssa_var_map): Remove.
	(tpa_init, tpa_remove_partition, tpa_delete, tpa_compact,
	root_var_init): Remove.
	(partition_pair_map_hash, partition_pair_map_eq, create_coalesce_list,
	delete_coalesce_list, find_partition_pair, coalesce_cost, add_coalesce,
	compare_pairs, num_coalesce_pairs, first_partition_pair,
	end_partition_pair_p, next_partition_pair, sort_coalesce_list,
	pop_best_coalesce, add_conflicts_if_valid, set_if_valid,
	build_tree_conflict_graph, coalesce_tpa_members, dump_coalesce_list,
	tpa_dump): Moved to tree-ssa-coalesce.c and/or renamed there.
	(dump_var_map): Use renamed fields.
	* tree-ssa-live.h (struct  _var_map): Modify fields.
	(partition_to_var, version_to_var, var_to_partition): Use renamed 
	fields.
	(basevar_index): New.  Index of the base variable of a partition.
	(num_basevars): New.  Number of unique base variables in partition map.
	(register_ssa_partition): Use renamed fields.
	(struct tree_partition_associator_d): Remove.
	(tpa_num_trees, tpa_tree, tpa_first_partition, tpa_next_partition,
	tpa_find_tree, tpa_decompact, root_var_init, root_var_num,
	root_var, root_var_first_partition, root_var_next_partition,
	root_var_dump, root_var_delete, root_var_remove_partition, 
	root_var_find, root_var_compact, root_var_decompact): Remove.
	(struct partition_pair, struct coalesce_list_d): Moved to 
	tree-ssa-coalesce.c
	* tree-ssa-ter.c: Remove header files which aren't needed.

From-SVN: r119711

2006-12-10  Tobias Burnus  <burnus@net-b.de>

	* gfortran.texi: Update Fortran 2003 section.

From-SVN: r119710