2011-08-29  Geert Bosch  <bosch@adacore.com>

	* s-vaflop-vms-alpha.adb (Neg_F): Use subtraction instead of negation
	instruction, as the latter may produce -0.0, which is not a valid VAX
	F float number.
	(Neg_G): Likewise for VAX F float.

2011-08-29  Robert Dewar  <dewar@adacore.com>

	* exp_util.adb: Minor reformatting.

2011-08-29  Yannick Moy  <moy@adacore.com>

	* sem_ch3.adb: Minor comment update.

2011-08-29  Thomas Quinot  <quinot@adacore.com>

	* checks.adb (Apply_Type_Conversion_Checks): Use the Underlying_Type of
	the operand type.

2011-08-29  Thomas Quinot  <quinot@adacore.com>

	* par_sco.adb (Traverse_Declarations_Or_Statements): Do not flush
	current statement sequence on a generic instantiation or a subprogram
	declaration.

From-SVN: r178161

2011-08-29  Robert Dewar  <dewar@adacore.com>

	* sem_type.adb, einfo.ads, freeze.adb, exp_ch4.adb, sem_ch13.adb:
	Minor reformatting.

2011-08-29  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_util.adb (Requires_Cleanup_Actions (List_Id, Boolean, Boolean)):
	Correct the check which involves the freeze node of a controlled or
	access-to-controlled type.

2011-08-29  Geert Bosch  <bosch@adacore.com>

	* sem_warn.adb (Check_Code_Statement): Remove check for consecutive Asm
	statements.
	* s-vaflop-vms-alpha.adb: Remove bogus Volatile => True arguments from
	Asm statements.

From-SVN: r178160

2011-08-29  Yannick Moy  <moy@adacore.com>

	* sem_ch3.adb (Array_Type_Declaration): Insert a subtype declaration
	for every index type and component type that is not a subtype_mark.
	(Process_Subtype): Set Etype of subtype.

2011-08-29  Robert Dewar  <dewar@adacore.com>

	* a-cbmutr.adb, a-cimutr.adb, a-comutr.adb, prj-nmsc.adb: Minor code
	reorganization.  Minor reformatting.

From-SVN: r178159

2011-08-29  Steve Baird  <baird@adacore.com>

	* exp_ch4.adb (Expand_N_Op_Expon): Suppress N_Op_Expon node expansion
	for CodePeer and ALFA modes.

2011-08-29  Ed Schonberg  <schonberg@adacore.com>

	* sem_type.adb (Collect_Interps): Within an instance, collect a homonym
	that comes from an enclosing scope if it is not the renaming of an
	actual, to handle properly a spurious ambiguity in an instance.

From-SVN: r178158

2011-08-29  Eric Botcazou  <ebotcazou@adacore.com>

	* sem_ch13.adb (Alignment_Check_For_Esize_Change): Rename to...
	(Alignment_Check_For_Size_Change): ...this.  Add SIZE parameter and
	use it instead of the Esize of the first parameter.
	(Analyze_Attribute_Definition_Clause) <Object_Size>: Adjust call to
	above change.
	<Size>: Likewise.  Call it for composite types on the RM size.

2011-08-29  Yannick Moy  <moy@adacore.com>

	* exp_ch4.adb (Expand_N_Op_Not): Do not expand not on array.
	* sem_util.adb (Unique_Name): Correct behaviour for names of
	compilation units.

From-SVN: r178157

2011-08-29  Yannick Moy  <moy@adacore.com>

	* sem_prag.adb (Check_Precondition_Postcondition): In formal
	verification mode, analyze pragma expression for correctness, for
	pre/post on library-level subprogram, as it is not expanded later.

2011-08-29  Yannick Moy  <moy@adacore.com>

	* exp_aggr.adb (Expand_Array_Aggregate): Do not expand array aggregates
	in formal verification.

2011-08-29  Thomas Quinot  <quinot@adacore.com>

	* sem_util.adb: Minor reformatting.
	* freeze.adb, sem_ch13.adb: Fix comment: Bit_Order is an attribute,
	there's no pragma.
	* par_sco.ads, par_sco.adb: Update comments.

2011-08-29  Yannick Moy  <moy@adacore.com>

	* einfo.adb, einfo.ads: Remove flag Is_Postcondition_Proc and
	associated getter/setter.
	* sem_ch6.adb: Remove reference to Is_Postcondition_Proc.

2011-08-29  Vincent Celier  <celier@adacore.com>

	* prj-attr.adb: New Compiler attribute Dependency_Kind and Language_Kind
	* prj-conf.adb: Add_Default_GNAT_Naming_Scheme: Add a package Compiler
	with declarations for Language_Kind and Dependency_Kind for Ada.
	* prj-nmsc.adb (Check_Unit_Name): New name of procedure Check_Ada_Name
	(Process_Compiler): Take into account the new attributes Dependency_Kind
	and Language_Kind.
	(Check_Configuration): Check if language kind is unit based, not if the
	language name is Ada.
	(Process_Exceptions_Unit_Based): Ditto
	(Add_Language): Remove default additions of language and dependency kind
	* prj.ads: Minor comment change
	* snames.ads-tmpl: New standard names Dependency_Kind and Language_Kind

2011-08-29  Johannes Kanig  <kanig@adacore.com>

	* debug.adb: Update comments.

From-SVN: r178156

From-SVN: r178152

2011-08-28  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/bits/move.h (swap(_Tp(&)[_Nm], _Tp(&)[_Nm])): Remove
	workaround for c++/49045.
	* include/bits/algorithmfwd.h: Likewise.

From-SVN: r178147

libcpp/

	* line-map.c (linemap_add): Assert that reason must not be
	LC_RENAME when called for the first time on a "main input file".

c-family/

	* c-pch.c (c_common_read_pch): Call linemap_add with LC_ENTER as it's
	the first time it's being called on this main TU.

gcc/lto/

	* lto-lang.c (lto_init): Likewise.  Also, avoid calling
	linemap_add twice.

gcc/fortran/

	* scanner.c (load_file): Don't abuse LC_RENAME reason while
	(indirectly) calling linemap_add.

From-SVN: r178146

	Core DR 342
	PR c++/48582
	* pt.c (check_valid_ptrmem_cst_expr): A null member pointer value
	is valid in C++11.
	(convert_nontype_argument): Likewise.  Implicitly convert nullptr
	and do constant folding.
	* mangle.c (write_template_arg_literal): Mangle null member
	pointer values as 0.
	* call.c (null_member_pointer_value_p): New.
	* cp-tree.h: Declare it.

From-SVN: r178144

From-SVN: r178142

re PR bootstrap/50218 (tree-ssa-loop-ivopts.c triggers -Werror=maybe-uninitialized breaking i686-linux bootstrap)

2011-08-28  Mikael Pettersson  <mikpe@it.uu.se>

	PR bootstrap/50218
	* tree-ssa-loop-ivopts.c (determine_use_iv_cost_condition): Initialize
	comp.

From-SVN: r178141

2011-08-28  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/40866
	* generated/iall_i1.c: Regenerated.
	* generated/iall_i16.c: Regenerated.
	* generated/iall_i2.c: Regenerated.
	* generated/iall_i4.c: Regenerated.
	* generated/iall_i8.c: Regenerated.
	* generated/iany_i1.c: Regenerated.
	* generated/iany_i16.c: Regenerated.
	* generated/iany_i2.c: Regenerated.
	* generated/iany_i4.c: Regenerated.
	* generated/iany_i8.c: Regenerated.
	* generated/iparity_i1.c: Regenerated.
	* generated/iparity_i16.c: Regenerated.
	* generated/iparity_i2.c: Regenerated.
	* generated/iparity_i4.c: Regenerated.
	* generated/iparity_i8.c: Regenerated.
	* generated/norm2_r10.c: Regenerated.
	* generated/norm2_r16.c: Regenerated.
	* generated/norm2_r4.c: Regenerated.
	* generated/norm2_r8.c: Regenerated.
	* generated/parity_l1.c: Regenerated.
	* generated/parity_l16.c: Regenerated.
	* generated/parity_l2.c: Regenerated.
	* generated/parity_l4.c: Regenerated.
	* generated/parity_l8.c: Regenerated.
	* generated/misc_specifics.F90: Regenerated (comment change).
	* generated/_abs_c10.F90: Regenerated (comment change).
	* generated/_abs_c16.F90: Regenerated (comment change).
	* generated/_abs_c4.F90: Regenerated (comment change).
	* generated/_abs_c8.F90: Regenerated (comment change).
	* generated/_abs_i16.F90: Regenerated (comment change).
	* generated/_abs_i4.F90: Regenerated (comment change).
	* generated/_abs_i8.F90: Regenerated (comment change).
	* generated/_abs_r10.F90: Regenerated (comment change).
	* generated/_abs_r16.F90: Regenerated (comment change).
	* generated/_abs_r4.F90: Regenerated (comment change).
	* generated/_abs_r8.F90: Regenerated (comment change).
	* generated/_acosh_r10.F90: Regenerated (comment change).
	* generated/_acosh_r16.F90: Regenerated (comment change).
	* generated/_acosh_r4.F90: Regenerated (comment change).
	* generated/_acosh_r8.F90: Regenerated (comment change).
	* generated/_acos_r10.F90: Regenerated (comment change).
	* generated/_acos_r16.F90: Regenerated (comment change).
	* generated/_acos_r4.F90: Regenerated (comment change).
	* generated/_acos_r8.F90: Regenerated (comment change).
	* generated/_aimag_c10.F90: Regenerated (comment change).
	* generated/_aimag_c16.F90: Regenerated (comment change).
	* generated/_aimag_c4.F90: Regenerated (comment change).
	* generated/_aimag_c8.F90: Regenerated (comment change).
	* generated/_aint_r10.F90: Regenerated (comment change).
	* generated/_aint_r16.F90: Regenerated (comment change).
	* generated/_aint_r4.F90: Regenerated (comment change).
	* generated/_aint_r8.F90: Regenerated (comment change).
	* generated/_anint_r10.F90: Regenerated (comment change).
	* generated/_anint_r16.F90: Regenerated (comment change).
	* generated/_anint_r4.F90: Regenerated (comment change).
	* generated/_anint_r8.F90: Regenerated (comment change).
	* generated/_asinh_r10.F90: Regenerated (comment change).
	* generated/_asinh_r16.F90: Regenerated (comment change).
	* generated/_asinh_r4.F90: Regenerated (comment change).
	* generated/_asinh_r8.F90: Regenerated (comment change).
	* generated/_asin_r10.F90: Regenerated (comment change).
	* generated/_asin_r16.F90: Regenerated (comment change).
	* generated/_asin_r4.F90: Regenerated (comment change).
	* generated/_asin_r8.F90: Regenerated (comment change).
	* generated/_atan2_r10.F90: Regenerated (comment change).
	* generated/_atan2_r16.F90: Regenerated (comment change).
	* generated/_atan2_r4.F90: Regenerated (comment change).
	* generated/_atan2_r8.F90: Regenerated (comment change).
	* generated/_atanh_r10.F90: Regenerated (comment change).
	* generated/_atanh_r16.F90: Regenerated (comment change).
	* generated/_atanh_r4.F90: Regenerated (comment change).
	* generated/_atanh_r8.F90: Regenerated (comment change).
	* generated/_atan_r10.F90: Regenerated (comment change).
	* generated/_atan_r16.F90: Regenerated (comment change).
	* generated/_atan_r4.F90: Regenerated (comment change).
	* generated/_atan_r8.F90: Regenerated (comment change).
	* generated/_conjg_c10.F90: Regenerated (comment change).
	* generated/_conjg_c16.F90: Regenerated (comment change).
	* generated/_conjg_c4.F90: Regenerated (comment change).
	* generated/_conjg_c8.F90: Regenerated (comment change).
	* generated/_cosh_r10.F90: Regenerated (comment change).
	* generated/_cosh_r16.F90: Regenerated (comment change).
	* generated/_cosh_r4.F90: Regenerated (comment change).
	* generated/_cosh_r8.F90: Regenerated (comment change).
	* generated/_cos_c10.F90: Regenerated (comment change).
	* generated/_cos_c16.F90: Regenerated (comment change).
	* generated/_cos_c4.F90: Regenerated (comment change).
	* generated/_cos_c8.F90: Regenerated (comment change).
	* generated/_cos_r10.F90: Regenerated (comment change).
	* generated/_cos_r16.F90: Regenerated (comment change).
	* generated/_cos_r4.F90: Regenerated (comment change).
	* generated/_cos_r8.F90: Regenerated (comment change).
	* generated/_dim_i16.F90: Regenerated (comment change).
	* generated/_dim_i4.F90: Regenerated (comment change).
	* generated/_dim_i8.F90: Regenerated (comment change).
	* generated/_dim_r10.F90: Regenerated (comment change).
	* generated/_dim_r16.F90: Regenerated (comment change).
	* generated/_dim_r4.F90: Regenerated (comment change).
	* generated/_dim_r8.F90: Regenerated (comment change).
	* generated/_exp_c10.F90: Regenerated (comment change).
	* generated/_exp_c16.F90: Regenerated (comment change).
	* generated/_exp_c4.F90: Regenerated (comment change).
	* generated/_exp_c8.F90: Regenerated (comment change).
	* generated/_exp_r10.F90: Regenerated (comment change).
	* generated/_exp_r16.F90: Regenerated (comment change).
	* generated/_exp_r4.F90: Regenerated (comment change).
	* generated/_exp_r8.F90: Regenerated (comment change).
	* generated/_log10_r10.F90: Regenerated (comment change).
	* generated/_log10_r16.F90: Regenerated (comment change).
	* generated/_log10_r4.F90: Regenerated (comment change).
	* generated/_log10_r8.F90: Regenerated (comment change).
	* generated/_log_c10.F90: Regenerated (comment change).
	* generated/_log_c16.F90: Regenerated (comment change).
	* generated/_log_c4.F90: Regenerated (comment change).
	* generated/_log_c8.F90: Regenerated (comment change).
	* generated/_log_r10.F90: Regenerated (comment change).
	* generated/_log_r16.F90: Regenerated (comment change).
	* generated/_log_r4.F90: Regenerated (comment change).
	* generated/_log_r8.F90: Regenerated (comment change).
	* generated/_mod_i16.F90: Regenerated (comment change).
	* generated/_mod_i4.F90: Regenerated (comment change).
	* generated/_mod_i8.F90: Regenerated (comment change).
	* generated/_mod_r10.F90: Regenerated (comment change).
	* generated/_mod_r16.F90: Regenerated (comment change).
	* generated/_mod_r4.F90: Regenerated (comment change).
	* generated/_mod_r8.F90: Regenerated (comment change).
	* generated/_sign_i16.F90: Regenerated (comment change).
	* generated/_sign_i4.F90: Regenerated (comment change).
	* generated/_sign_i8.F90: Regenerated (comment change).
	* generated/_sign_r10.F90: Regenerated (comment change).
	* generated/_sign_r16.F90: Regenerated (comment change).
	* generated/_sign_r4.F90: Regenerated (comment change).
	* generated/_sign_r8.F90: Regenerated (comment change).
	* generated/_sinh_r10.F90: Regenerated (comment change).
	* generated/_sinh_r16.F90: Regenerated (comment change).
	* generated/_sinh_r4.F90: Regenerated (comment change).
	* generated/_sinh_r8.F90: Regenerated (comment change).
	* generated/_sin_c10.F90: Regenerated (comment change).
	* generated/_sin_c16.F90: Regenerated (comment change).
	* generated/_sin_c4.F90: Regenerated (comment change).
	* generated/_sin_c8.F90: Regenerated (comment change).
	* generated/_sin_r10.F90: Regenerated (comment change).
	* generated/_sin_r16.F90: Regenerated (comment change).
	* generated/_sin_r4.F90: Regenerated (comment change).
	* generated/_sin_r8.F90: Regenerated (comment change).
	* generated/_sqrt_c10.F90: Regenerated (comment change).
	* generated/_sqrt_c16.F90: Regenerated (comment change).
	* generated/_sqrt_c4.F90: Regenerated (comment change).
	* generated/_sqrt_c8.F90: Regenerated (comment change).
	* generated/_sqrt_r10.F90: Regenerated (comment change).
	* generated/_sqrt_r16.F90: Regenerated (comment change).
	* generated/_sqrt_r4.F90: Regenerated (comment change).
	* generated/_sqrt_r8.F90: Regenerated (comment change).
	* generated/_tanh_r10.F90: Regenerated (comment change).
	* generated/_tanh_r16.F90: Regenerated (comment change).
	* generated/_tanh_r4.F90: Regenerated (comment change).
	* generated/_tanh_r8.F90: Regenerated (comment change).
	* generated/_tan_r10.F90: Regenerated (comment change).
	* generated/_tan_r16.F90: Regenerated (comment change).
	* generated/_tan_r4.F90: Regenerated (comment change).
	* generated/_tan_r8.F90: Regenerated (comment change).

From-SVN: r178140

From-SVN: r178139

	* doc/rtl.texi (simple_return): Document.
	(parallel, PATTERN): Here too.
	* doc/md.texi (return): Mention it's allowed to expand to simple_return
	in some cases.
	(simple_return): Document standard pattern.
	* gengenrtl.c (special_rtx): SIMPLE_RETURN is special.
	* final.c (final_scan_insn): Use ANY_RETURN_P on body.
	* reorg.c (function_return_label, function_simple_return_label):
	New static variables, replacing...
	(end_of_function_label): ... this.
	(simplejump_or_return_p): New static function.
	(optimize_skip, steal_delay_list_from_fallthrough,
	fill_slots_from_thread): Use it.
	(relax_delay_slots): Likewise.  Use ANY_RETURN_P on body.
	(rare_destination, follow_jumps): Use ANY_RETURN_P on body.
	(find_end_label): Take a new arg which is one of the two return
	rtxs.  Depending on which, set either function_return_label or
	function_simple_return_label.  All callers changed.
	(make_return_insns): Make both kinds.
	(dbr_schedule): Adjust for two kinds of end labels.
	* function.c (emit_return_into_block): Set JUMP_LABEL properly.
	* genemit.c (gen_exp): Handle SIMPLE_RETURN.
	(gen_expand, gen_split): Use ANY_RETURN_P.
	* df-scan.c (df_uses_record): Handle SIMPLE_RETURN.
	* rtl.def (SIMPLE_RETURN): New code.
	* ifcvt.c (find_if_case_1): Be more careful about
	redirecting jumps to the EXIT_BLOCK.
	* jump.c (condjump_p, condjump_in_parallel_p, any_condjump_p,
	returnjump_p_1): Handle SIMPLE_RETURNs.
	* print-rtl.c (print_rtx): Likewise.
	* rtl.c (copy_rtx): Likewise.
	* bt-load.c (compute_defs_uses_and_gen): Use ANY_RETURN_P.
	* combine.c (simplify_set): Likewise.
	* resource.c (find_dead_or_set_registers, mark_set_resources):
	Likewise.
	* emit-rtl.c (verify_rtx_sharing, classify_insn, copy_insn_1,
	copy_rtx_if_shared_1, mark_used_flags): Handle SIMPLE_RETURNs.
	(init_emit_regs): Initialize simple_return_rtx.
	* cfglayout.c (fixup_reorder_chain): Pass a JUMP_LABEL to
	force_nonfallthru_and_redirect.
	* rtl.h (ANY_RETURN_P): Allow SIMPLE_RETURN.
	(GR_SIMPLE_RETURN): New enum value.
	(simple_return_rtx): New macro.
	* basic-block.h (force_nonfallthru_and_redirect): Adjust
	declaration.
	* cfgrtl.c (force_nonfallthru_and_redirect): Take a new jump_label
	argument.  All callers changed.  Be careful about what kinds of
	returnjumps to generate.
	* config/i386/3i86.c (ix86_pad_returns, ix86_count_insn_bb,
	ix86_pad_short_function): Likewise.
	* config/arm/arm.c (arm_final_prescan_insn): Handle both kinds
	of return.
	* config/mips/mips.md (any_return): New code_iterator.
	(optab): Add cases for return and simple_return.
	(return): Expand to a simple_return.
	(simple_return): New pattern.
	(*<optab>, *<optab>_internal for any_return): New patterns.
	(return_internal): Remove.
	* config/mips/mips.c (mips_expand_epilogue): Make the last insn
	a simple_return_internal.

From-SVN: r178135

	* config/i386/sse.md (*absneg<mode>2): Fix split condition.
	(vec_extract_lo_<mode>): Prevent both operands in memory.
	(vec_extract_lo_v16hi): Ditto.
	(*vec_extract_v4sf_mem): Add TARGET_SSE insn constraint.

	* config/i386/sse.md (mulv16qi3): Attach REG_EQUAL note.
	(*sse2_mulv4si3): Ditto.
	(mulv2di3): Ditto.
	* config/i386/i386.c (legitimize_tls_address): Change REG_EQIV
	notes to REG_EQUAL.

From-SVN: r178132

re PR target/50202 (ICE: in final_scan_insn, at final.c:2709 (could not split insn) with __builtin_ia32_pcmpistri128)

	PR target/50202
	* config/i386/sse.md (sse4_2_pcmpestr): Emit NOTE_INSN_DELETED note
	when all outputs are unused.
	(sse4_2_pcmpestr): Ditto.

testsuite/ChangeLog:

	PR target/50202
	* gcc.target/i386/pr50202.c: New test.

From-SVN: r178130

From-SVN: r178129

	* config/i386/i386.c (ix86_build_const_vector): Rewrite using loop
	with RTVEC_ELT accessor.

From-SVN: r178124

	* config/i386/i386.md (round<mode>2): New expander.
	* config/i386/i386.c (enum ix86_builtins): Add
	IX86_BUILTIN_ROUND{PS,PD}_AZ{,256}.
	(struct builtin_description): Add __builtin_ia32_round{ps,pd}_az{,256}
	descriptions.
	(ix86_builtin_vectorized_function): Handle BUILT_IN_ROUND{,F} builtins.

testsuite/ChangeLog:

	* gcc.target/i386/sse_4_1-round-vec.c: New test.
	* gcc.target/i386/sse_4_1-roundf-vec.c: New test.
	* gcc.target/i386/avx-round-vec.c: New test.
	* gcc.target/i386/avx-roundf-vec.c: New test.

From-SVN: r178123

	PR middle-end/50083
	* convert.c (convert_to_integer) <BUIT_IN_ROUND{,F,L}>: Convert
	only when TARGET_C99_FUNCTIONS.
	<BUILT_IN_NEARBYINT{,F,L}>: Ditto.
	<BUILT_IN_RINT{,F,L}>: Ditto.

From-SVN: r178119

	PR lto/50165
	* lto-streamer-in.c (canon_file_name): Initialize new_slot->len;
	don't call strlen twice, use memcpy.

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

From-SVN: r178118

2011-08-26  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/bmi2intrin.h: Allow in <immintrin.h>.
	* config/i386/bmiintrin.h: Likewise.
	* config/i386/lzcntintrin.h: Likewise.

	* config/i386/immintrin.h: Include <lzcntintrin.h>,
	<bmiintrin.h> and <bmi2intrin.h>.

From-SVN: r178117

	PR target/50166
	* acinclude.m4 (gcc_AC_INITFINI_ARRAY): Check count in main.
	* configure: Regenerate.

From-SVN: r178116

	* trans-decl.c (get_proc_pointer_decl): Set DECL_TLS_MODEL
	if threadprivate.
	* symbol.c (check_conflict): Allow threadprivate attribute with
	FL_PROCEDURE if proc_pointer.

	* testsuite/libgomp.fortran/threadprivate4.f90: New test.

From-SVN: r178114

	* gcc.target/i386/cmpxchg16b-1.c: Match also space after the
	instruction.

From-SVN: r178113

	PR c/50179
	* c-typeck.c (c_process_expr_stmt): Skip over nops and
	call mark_exp_read even if exprv is ADDR_EXPR.

	* c-c++-common/Wunused-var-14.c: New test.

From-SVN: r178110

gcc/
	* df-problems.c (df_note_bb_compute): Pass uses rather than defs
	to df_set_dead_notes_for_mw.

From-SVN: r178109

2011-08-26  Richard Guenther  <rguenther@suse.de>

	* varasm.c (decode_addr_const): Handle MEM_REF[&X, OFF].

From-SVN: r178107

2011-08-26  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/tree-ssa/ivopts-lt.c: New test.

From-SVN: r178105

2011-08-26  Zdenek Dvorak  <ook@ucw.cz>
	    Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-loop-ivopts.c (struct cost_pair): Add comp field.
	(struct ivopts_data): Add loop_single_exit_p field.
	(niter_for_exit): Change parameter desc_p into return value.  Return
	desc if	desc->may_be_zero.  Free desc if unused.
	(niter_for_single_dom_exit): Change return type.
	(find_induction_variables): Handle changed return type of
	niter_for_single_dom_exit.  Dump may_be_zero.
	(add_candidate_1): Keep original base and step type for IP_ORIGINAL.
	(set_use_iv_cost): Add and handle comp parameter.
	(determine_use_iv_cost_generic, determine_use_iv_cost_address): Add
	comp argument to set_use_iv_cost.
	(strip_wrap_conserving_type_conversions, expr_equal_p)
	(difference_cannot_overflow_p, iv_elimination_compare_lt): New function.
	(may_eliminate_iv): Add comp parameter.  Handle new return type of
	niter_for_exit.  Use loop_single_exit_p.  Use iv_elimination_compare_lt.
	(determine_use_iv_cost_condition): Add comp argument to set_use_iv_cost
	and may_eliminate_iv.
	(rewrite_use_compare): Move call to iv_elimination_compare to ...
	(may_eliminate_iv): Here.
	(tree_ssa_iv_optimize_loop): Initialize loop_single_exit_p.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>

From-SVN: r178104

2011-08-26  Tom de Vries  <tom@codesourcery.com>

	* tree-pretty-print (dump_generic_node): Test for NULL_TREE before
	accessing TREE_TYPE.

From-SVN: r178103

Add conditional compare support for Thumb2.

From-SVN: r178102

From-SVN: r178101

2011-08-26  Richard Guenther  <rguenther@suse.de>

	* expr.c (string_constant): Handle &MEM_REF.

From-SVN: r178100

2011-08-26  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/arm/arm.c (struct four_ints): New type.
	(count_insns_for_constant): Delete function.
	(find_best_start): Delete function.
	(optimal_immediate_sequence): New function.
	(optimal_immediate_sequence_1): New function.
	(arm_gen_constant): Move constant splitting code to
	optimal_immediate_sequence.
	Rewrite constant negation/invertion code.

	gcc/testsuite/
	* gcc.target/arm/thumb2-replicated-constant1.c: New file.
	* gcc.target/arm/thumb2-replicated-constant2.c: New file.
	* gcc.target/arm/thumb2-replicated-constant3.c: New file.
	* gcc.target/arm/thumb2-replicated-constant4.c: New file.

2011-08-26  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/arm/arm-protos.h (const_ok_for_op): Add prototype.
	* config/arm/arm.c (const_ok_for_op): Add support for addw/subw.
	Remove prototype. Remove static function type.
	* config/arm/arm.md (*arm_addsi3): Add addw/subw support.
	Add arch attribute.
	* config/arm/constraints.md (Pj, PJ): New constraints.

From-SVN: r178099

From-SVN: r178098

From-SVN: r178095

From-SVN: r178091

From-SVN: r178088