This changes code generation from "eors; eors; orrs" (which ranges
from 6 to 12 bytes and requires three scratch registers), to
"cmp; it; cmp" (which is always 6 bytes for register inputs and
requires no scratch registers).

        * config/arm/arm.md (*arm_cmpdi_unsigned): Enable for thumb2.
        * config/arm/arm.c (arm_select_cc_mode): Use it.

From-SVN: r182561

From-SVN: r182560

/cp
2011-12-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51621
	* tree.c (diagnose_non_constexpr_vec_init): For value initialization
	pass void_type_node, not void_zero_node, to build_vec_init_elt.

/testsuite
2011-12-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51621
	* g++.dg/cpp0x/constexpr-ice5.C: New.

From-SVN: r182556

	* config/i386/morestack.S (__morestack_non_split): If there is
	enough stack space already, don't split.  Ask for more stack space
	than we required.

From-SVN: r182555

tree-ssa-math-opts.c (convert_plusminus_to_widen): Restrict handling of signedness differences to integer types.

gcc/
	* tree-ssa-math-opts.c (convert_plusminus_to_widen): Restrict
	handling of signedness differences to integer types.  Only build
	a new optype if type1 isn't correct.

From-SVN: r182554

2011-12-20  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/49865
	* ira-costs.c (find_costs_and_classes): Prefer registers even
          if the memory cost is the same.

From-SVN: r182553

2011-12-20  Sergio Durigan Junior  <sergiodj@redhat.com>

	* unwind-arm-common.inc: Include `tconfig.h', `tsystem.h' and
	`sys/sdt.h'.
	(_Unwind_DebugHook): New function.
	(uw_restore_core_regs): New define.
	(unwind_phase2): Use uw_restore_core_regs instead of
	restore_core_regs.
	(unwind_phase2_forced): Likewise.
	(__gnu_Unwind_Resume): Likewise.

From-SVN: r182552

	* c-decl.c (diagnose_mismatched_decls, grokdeclarator, grokfield)
	(finish_struct): Refer to C11 in comments.  Use flag_isoc11.
	* c-parser.c (c_parser_static_assert_declaration)
	(c_parser_static_assert_declaration_no_semi, c_parser_declspecs)
	(c_parser_alignas_specifier, c_parser_alignof_expression): Refer
	to C11 in comments.  Use flag_isoc11.
	* c-typeck.c (comptypes_check_different_types): Refer to C11 in
	comment.
	* doc/cpp.texi (Overview): Refer to -std=c11 instead of -std=c1x.
	* doc/cppopts.texi (-std=c11, -std=gnu11): Document in preference
	to -std=c1x and -std=gnu1x.
	* doc/extend.texi (Inline, Alternate Keywords, Other Builtins)
	(__builtin_complex, Unnamed Fields): Refer to -std=c11 and C11
	instead of -std=c1x and C1X.
	* doc/invoke.texi (-std=c11, -std=iso9899:2011): Document in
	preference to -std=c1x.
	(-std=gnu11): Document in preference to -std=gnu1x.
	* doc/standards.texi: Document C11 instead of C1X.  Document C11
	as actual standard.  Document headers required from freestanding
	C11 implementations.
	* ginclude/float.h, ginclude/stddef.h: Test __STDC_VERSION__ >=
	201112L for C11.  Update comments to refer to C11.

gcc/c-family:
	* c-common.c (flag_isoc99): Update comment to refer to C11.
	(flag_isoc1x): Change to flag_isoc11.
	* c-common.h (flag_isoc99): Update comment to refer to C11.
	(flag_isoc1x): Change to flag_isoc11.
	* c-cppbuiltin.c (cpp_atomic_builtins): Change comment to refer to
	C11.
	* c-opts.c (set_std_c1x): Change to set_std_c11.
	(c_common_handle_option): Handle OPT_std_c11 and OPT_std_gnu11.
	Call set_std_c11.
	(set_std_c89, set_std_c99, set_std_c11): Use flag_isoc11.
	(set_std_c1): Use CLK_STDC11 and CLK_GNUC11.
	* c.opt (std=c1x): Change to std=c11.  Document as non-draft
	standard.
	(std=c1x, std=iso9899:2011): Add as aliases of std=c11.
	(std=gnu1x): Change to std=gnu11.  Refer to non-draft standard.
	(std=gnu1x): Make alias of std=gnu11.

gcc/testsuite:
	* gcc.dg/c11-version-1.c, gcc.dg/c11-version-2.c,
	gcc.dg/c94-version-1.c, gcc.dg/c99-version-1.c,
	gcc.dg/gnu11-version-1.c: New tests.

libcpp:
	* include/cpplib.h (CLK_GNUC1X): Change to CLK_GNUC11.
	(CLK_STDC1X): Change to CLK_STDC11.
	* init.c (lang_defaults): Update comments.
	(cpp_init_builtins): Update language tests.  Use 201112L for C11
	__STDC_VERSION__.

From-SVN: r182551

From-SVN: r182550

From Rainer Orth.

From-SVN: r182549

From-SVN: r182548

config/:
	* warnings.m4 (ACX_PROG_CC_WARNING_OPTS): Avoid leading dash in
	expr call.
fixincludes/:
	* configure: Regenerate.
gcc/:
	* configure: Regenerate.
libcpp/:
	* configure: Regenerate.
libdecnumber/:
	* configure: Regenerate.
libiberty/:
	* configure: Regenerate.
lto-plugin/:
	* configure: Regenerate.

From-SVN: r182546

	gcc/
	* expr.c (store_field): Avoid a direct store if the mode is larger
	than the size of the bit field.
	* stor-layout.c (layout_decl): If flag_strict_volatile_bitfields,
	treat non-volatile bit fields like volatile ones.
	* toplev.c (process_options): Disallow combination of
	-fstrict-volatile-bitfields and ABI versions less than 2.
	* config/arm/arm.c (arm_option_override): Don't enable
	flag_strict_volatile_bitfields if the ABI version is less than 2.
	* config/h8300/h8300.c (h8300_option_override): Likewise.
	* config/rx/rx.c (rx_option_override): Likewise.
	* config/m32c/m32c.c (m32c_option_override): Likewise.
	* config/sh/sh.c (sh_option_override): Likewise.

	gcc/testsuite/
	* gcc.target/arm/volatile-bitfields-4.c: New test.
	* c-c++-common/abi-bf.c: New test.

From-SVN: r182545

2011-12-20  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch12.adb (Insert_Freeze_Node_For_Instance):  Further
	refinements on the placement of a freeze node for a package
	instantiation, when the generic appears within a previous
	instantiation in the same unit.If the current instance is within
	the one that contains the generic, the freeze node for the
	current one must appear in the current declarative part. Ditto
	if the current instance is within another package instance. In
	these cases the freeze node of the previous instance is is not
	relevant. New predicate Enclosing_Body simplifies the process.
	(Freeze_Subprogram_Body): Rename Enclosing_Body to
	Enclosing_Package_Body, to prevent confusion with subprogram of
	same name elsewhere.
	(Install_Body): Recognize enclosing subprogram bodies to determine
	whether freeze_node belongs in current declarative list.

2011-12-20  Robert Dewar  <dewar@adacore.com>

	* sem_ch13.adb (Analyze_Attribute_Definition_Clause): Allow
	attribute definition clause for renaming if generated internally
	and generate duplicate clause to apply to renamed object.
	(Rep_Item_Too_Late): Only diagnose source level entities
	* prj-nmsc.adb: Minor reformatting.
	* gcc-interface/Make-lang.in: Update dependencies.

From-SVN: r182542

2011-12-20  Bob Duff  <duff@adacore.com>

	* opt.ads (List_Inherited_Aspects): Default to False
	(i.e. -gnatw.L is the default).
	* usage.adb: Document new default for -gnatw.L.
	* gnat_ugn.texi: Document -gnatw.l and -gnatw.L switches.
	* warnsw.adb (Set_Warning_Switch): Do not include
	List_Inherited_Aspects in -gnatwa.

2011-12-20  Ed Schonberg  <schonberg@adacore.com>

	* checks.adb (Apply_Type_Conversion_Checks): For a discrete type
	with predicates, indicate unconditionally that a range check
	is needed.
	* exp_ch4.adb (Expand_N_In): When the membership test is rewritten
	to incorporate a call to a predicate function, analyze expression
	with checks suppressed, to prevent infinite recursion.

From-SVN: r182540

2011-12-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch11.adb (Find_Local_Handler): Guard the
	search over individual exception choices in case the list of
	handlers contains other (possibly illegal) constructs.

2011-12-20  Gary Dismukes  <dismukes@adacore.com>

	* sem_ch8.adb (Find_Type): Test taggedness
	of the Available_Type when checking for an illegal use of an
	incomplete type, when the incomplete view is a limited view of
	a type. Remove redundant Is_Tagged test.

2011-12-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_util.adb: Add with and use clause for Aspects.
	(Is_Finalizable_Transient): Objects which denote Ada containers
	in the context of iterators are not considered transients. Such
	object must live for as long as the loop is around.
	(Is_Iterated_Container): New routine.

2011-12-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_imgv.adb (Expand_Width_Attribute): Add a
	type conversion from the enumeration subtype to its base subtype.

From-SVN: r182539

From-SVN: r182538

2011-12-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch4.adb (Operator_Check): Update the call to
	Is_Dimensioned_Type.
	* sem_dim.adb: Remove with and use clause for Namet.Sp. Reorganize
	all type declarations and datastructures involved. Propagate
	all changes involving data structures and types throughout
	the pakage. Alphabetize all subprograms. Add ??? comments.
	(AD_Hash): Removed.
	(Analyze_Aspect_Dimension): Rewritten. This
	routine now does all its checks in one pass rather than
	two. Refactor code. The error message are now in a more GNAT-ish style.
	(Create_Rational_From_Expr): This is now a function.
	(Get_Dimensions): Removed.
	(Get_Dimensions_String_Id): Removed.
	(Dimensions_Of): New rouitne.
	(Exists): New routines.
	(Is_Invalid): New routine.
	(Permits_Dimensions): Removed.
	(Present): Removed.
	(Set_Symbol): New routine.
	(System_Of): New routine.
	* sem_dim.ads: Rewrite the top level description of the
	package. Alphabetize subprograms. Add various comments on
	subprogram usage. Add ??? comments.
	(Is_Dimensioned_Type):
	Renamed to Has_Dimension_System.
	* sem_res.adb (Resolve_Op_Expon): Update the call to Is_Dimensioned_Type

From-SVN: r182537

sem_ch13.adb (Check_Indexing_Functions): The return type of an indexing function can be the default element type...

2011-12-20  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch13.adb (Check_Indexing_Functions): The return type of an
	indexing function can be the default element type, and does not
	need to be a reference type.
	* sem_ch4.adb (Try_Container_Indexing): Ditto.

From-SVN: r182536

2011-12-20  Robert Dewar  <dewar@adacore.com>

	* a-cdlili.ads, sem_cat.adb, sem_ch10.adb: Minor reformatting.

2011-12-20  Bob Duff  <duff@adacore.com>

	* s-taprop-mingw.adb (Yield): Do_Yield is no longer Unreferenced.

2011-12-20  Vincent Pucci  <pucci@adacore.com>

	* impunit.adb: s-dimkio, s-dimmks and s-dmotpr defined as GNAT
	Defined Additions to System.
	* Makefile.rtl: s-dimkio, s-dimmks and s-dmotpr added.
	* s-dimkio.ads, s-dimmks.ads, s-dmotpr.ads: New files.

2011-12-20  Gary Dismukes  <dismukes@adacore.com>

	* sem_ch4.adb (Traverse_Homonyms): Allow a homonym to match when
	within an instance, even if the homonym is marked Is_Hidden at
	this point.

From-SVN: r182535

2011-12-20  Robert Dewar  <dewar@adacore.com>

	* sem_ch3.adb, sem_ch5.adb, s-diinio.adb, s-diinio.ads, sem_dim.adb,
	sem_dim.ads, sem_res.adb, s-stposu.adb, s-stposu.ads, sem_ch4.adb,
	s-diflio.adb, s-diflio.ads, exp_disp.adb, s-llflex.ads: Minor
	reformatting.
	* aspects.ads: Dimension[_Aspects] are GNAT defined.

2011-12-20  Robert Dewar  <dewar@adacore.com>

	* sem_ch13.adb (Analyze_Attribute_Definition_Clause): Check
	renaming case.

2011-12-20  Thomas Quinot  <quinot@adacore.com>

	* sem_cat.adb, sem_ch10.adb (Analyze_With_Clause): For a WITH clause on
	a child unit that is an illegal instantiation, mark the WITH clause in
	error.
	(Install_Siblings, Validate_Categorization_Dependency): Guard
	against WITH clause marked as in error.

From-SVN: r182534

sem_res.adb (Resolve_Allocator): Warning on allocation of tasks on a subpool and rewrite the allocator into a...

2011-12-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_res.adb (Resolve_Allocator): Warning on allocation
	of tasks on a subpool and rewrite the allocator into a raise
	Program_Error statement.
	* s-stposu.ads, s-stposu.adb: Code reformatting.
	(Create_Subpool): Remove formal parameter Storage_Size.
	(Default_Subpool_For_Pool): Add the default implementation of this
	routine.
	(Set_Pool_Of_Subpool): Rename formal parameter Pool to To. Update
	all the uses of the parameter.

From-SVN: r182533

gcc/cp/

	PR debug/49951
	* decl.c (cxx_maybe_build_cleanup): Don't set location of the call
	to the destructor.

gcc/testsuite/

	PR debug/49951
	* g++.dg/gcov/gcov-2.C: Adjust.

From-SVN: r182532

	* configure.ac (i?86-*-linux*): Set SIGNAL_HANDLER_AUX.
	* configure: Regenerate.
	* include/i386-signal.h: Wrap in __i386__, include
	java-signal-aux.h otherwise.

From-SVN: r182528

	* gcc-interface/Makefile.in (%86 linux%):
	(LIBGNAT_TARGET_PAIRS_32): Split off from LIBGNAT_TARGET_PAIRS.
	(LIBGNAT_TARGET_PAIRS_64): New.
	(LIBGNAT_TARGET_PAIRS): Add either depending on multilib.

From-SVN: r182527

re PR c++/51612 ([c++0x] [4.6/4.7 Regression] ICE with constexpr constructor and virtual base class)

/cp
2011-12-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51612
	* semantics.c (is_valid_constexpr_fn): In case of constexpr
	constructors also check for virtual base classes.

/testsuite
2011-12-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51612
	* g++.dg/cpp0x/constexpr-ice4.C: New.

From-SVN: r182526

2011-12-20  Richard Guenther  <rguenther@suse.de>

	PR lto/46796
	* dwarf2out.c (modified_type_die): When the type variant
	chain is corrupt use the types name, if available, instead
	of __unknown__.

From-SVN: r182524

	PR libstdc++/51365
	* include/std/tuple (_Tuple_impl): Check __is_final as well as
	is_empty.
	* testsuite/20_util/tuple/51365.cc: New.

From-SVN: r182523

	* config/alpha/linux-unwind.h: Update copyright years.
	(MD_FROB_UPDATE_CONTEXT): New define.
	(alpha_frob_update_context): New function.

From-SVN: r182522

2011-12-20  Tristan Gingold  <gingold@adacore.com>

	* config/alpha/alpha.c (alpha_start_function): Adjust condition to
	create VMS trampoline entry point.

From-SVN: r182521

2011-12-20  Tristan Gingold  <gingold@adacore.com>

	* aclocal.m4: Assume strncmp works in cross case.
	* configure: Regenerate

From-SVN: r182520

From-SVN: r182516

2011-12-19  Benjamin Kosnik  <bkoz@redhat.com>

	* libsupc++/eh_tm.cc (free_any_cxa_exception): Use
	__GCC_ATOMIC_INT_LOCK_FREE, not _GLIBCXX_ATOMIC_BUILTINS_4.

From-SVN: r182512

2011-12-19  Benjamin Kosnik  <bkoz@redhat.com>

	* testsuite/performance/25_algorithms/search_n.cc: Disambiguate
	local variable.

From-SVN: r182510

/cp
2011-12-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51328
	* pt.c (convert_template_argument): Early error out and return
	error_mark_node for invalid uses of destructors as types.

/testsuite
2011-12-19  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/51328
	* g++.dg/template/crash109.C: New.

From-SVN: r182508

From-SVN: r182506

	PR c++/51530
	* pt.c (unify): Handle NULLPTR_TYPE.

From-SVN: r182505

fwprop.c (forward_propagate_subreg): Skip the SIGN/ZERO_EXTEND optimization if the source register is already extended.

gcc/
	* fwprop.c (forward_propagate_subreg): Skip the SIGN/ZERO_EXTEND
	optimization if the source register is already extended.

From-SVN: r182504

gcc/testsuite/
	* gcc.target/mips/mult-1.c: Require -O2.

From-SVN: r182502

gcc/testsuite/
	* gcc.target/mips/ext-2.c: Add NOMIPS16.

From-SVN: r182501