2012-11-23  Tobias Burnus  <burnus@net-b.de>
            Joseph Myers  <joseph@codesourcery.com>

        * quadmath-rounding-mode.h: New.
        * printf/fpioconst.c: Update from GLIBC. Fix strtod rounding.
        * printf/fpioconst.h: Ditto.
        * printf/printf_fp.c (__quadmath_printf_fp): Update from GLIBC.
        Make printf respect the rounding mode for decimal output.
        * printf/printf_fphex.c (__quadmath_printf_fphex): Update from
        GLIBC.  Make printf respect the rounding mode for hex output.
        * strtod/strtod_l.c: Update from GLIBC. Make strtod respect the
        rounding mode. Fix strtod handling of underflow.


Co-Authored-By: Joseph Myers <joseph@codesourcery.com>

From-SVN: r193770

	PR libstdc++/52680
	* acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Check for usleep and
	sleep if nanosleep is not available. Bump libtool revision.
	* config.h.in: Regenerate.
	* configure: Likewise.
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.18): Add __sleep_for.
	* include/std/thread (this_thread::__sleep_for): Add.
	(this_thread::yield, this_thread::sleep_until, this_thread::sleep_for):
	Declare unconditionally.
	* src/c++11/thread.cc (this_thread::__sleep_for): Define.
	* testsuite/lib/libstdc++.exp (check_v3_target_nanosleep): Rename to
	check_v3_target_sleep.
	* testsuite/lib/dg-options.exp (dg-require-nanosleep): Rename to
	dg-require-sleep.
	* testsuite/30_threads/condition_variable_any/53830.cc: Update.
	* testsuite/30_threads/this_thread/2.cc: Likewise.
	* testsuite/30_threads/this_thread/3.cc: Likewise.
	* testsuite/30_threads/this_thread/4.cc: Likewise.
	* testsuite/30_threads/async/54297.cc: Likewise.

From-SVN: r193769

	PR sanitizer/55450
	* tsan/Makefile.am (gcc_version): New.
	* tsan/Makefile.in: Regenerated.

From-SVN: r193767

2012-11-23  Tobias Burnus  <burnus@net-b.de>

        * doc/invoke.texi (-fsanitize=address): Remove obsolete
        remark.

From-SVN: r193764

	* lib/asan-dg.exp (asan_symbolize): Remove all "BFD: " prefixed lines
	from the output.

From-SVN: r193763

re PR c++/54046 (wrong control reaches end of non-void function for switch case with throw and default)

	PR c++/54046
	* Makefile.in (gimple-low.o): Depend on langhooks.h.
	* gimple-low.c: Include langhooks.c.
	(block_may_fallthru): Handle TARGET_EXPR and ERROR_MARK,
	by default call lang_hooks.block_may_fallthru.
	* langhooks.h (struct lang_hooks): Add block_may_fallthru
	langhook.
	* langhooks-def.h (LANG_HOOKS_BLOCK_MAY_FALLTHRU): Define.
	(LANG_HOOKS_INITIALIZER): Use it.

	* cp-objcp-common.h (LANG_HOOKS_BLOCK_MAY_FALLTHRU): Redefine.
	* cp-objcp-common.c (cxx_block_may_fallthru): New function.
	* cp-tree.h (cxx_block_may_fallthru): New prototype.

	* g++.dg/warn/Wreturn-type-8.C: New test.

From-SVN: r193762

	* i386-c.c (ix86_target_macros_internal): Update handling of core
	chips.
	* i386.c (DUMMY_STRINGOP_ALGS): Update
	(*_cost): Update.
	(core_cost): Copy from generic64_cost; fix stringop descriptors.
	(m_CORE2_32, m_CORE2_64, m_COREI7_32, m_COREI7_64, m_CORE2I7_32,
	m_CORE2I7_64): Remove.
	(m_CORE2, m_COREI7, m_CORE2I7): Update.
	(initial_ix86_tune_features): Update.
	(processor_target): Update.
	(ix86_option_override_internal): Update.
	(ix86_option_override_internal): Remove PROCESSOR_CORE2_64,
	PROCESSOR_COREI7_64 special cases.
	(decide_alg): Add noalign parameter; set it.
	(ix86_expand_movmem, ix86_expand_setmem): Update noalign handling.
	(ix86_issue_rate): Update.
	(ia32_multipass_dfa_lookahead): Update.
	(ix86_sched_init_global): Update.
	(get_builtin_code_for_version): Update.
	* i386.h (stringop_strategy): Add noalign flag.
	(TARGET_CORE2_32, TARGET_CORE2_64, TARGET_COREI7_32, TARGET_COREI7_64):
	Remove.
	(TARGET_CORE2, TARGET_COREI7): New.
	(enum processor_type): Remove PROCESSOR_CORE2_32, PROCESSOR_CORE2_64,
	PROCESSOR_COREI7_32, PROCESSOR_COREI7_64; add PROCESSOR_CORE2,
	PROCESSOR_COREI7.

From-SVN: r193761

	PR rtl-optimization/55388
	* alias.c (nonoverlapping_component_refs_p): Handle bitfields.
	* emit-rtl.c (adjust_address_1): Deal with VOIDmode early.
	* expmed.c (store_bit_field): Turn the call to adjust_address
	into a call to adjust_bitfield_address_size.

From-SVN: r193760

2012-11-23  Vladimir Makarov  <vmakarov@redhat.com>

	* lra.c (lra): Move init_reg_info and expand_reg_info calls before
	init_insn_recog_data.

From-SVN: r193759

re PR c++/55418 (Valgrind: Conditional jump or move depends on uninitialised value(s) in implicitly_declare_fn() method.c:1623)

2012-11-23  Markus Trippelsdorf  <markus@trippelsdorf.de>

	PR c++/55418
	* method.c (implicitly_declare_fn): Properly initialize trivial_p.

From-SVN: r193758

	PR middle-end/55430
	* gcc.dg/pr55430.c: New test.

From-SVN: r193757

From-SVN: r193756

	* tsan.c: Fix up comment formatting.
	(instrument_gimple): Ignore gimple_clobber_p stmts.
	(pass_tsan, pass_tsan_O0): Remove TODO_update_address_taken
	from todo_flags_finish.

From-SVN: r193755

	* gcc-interface/trans.c (Attribute_to_gnu) <Attr_Length>: Look through
	a view conversion from constrained to unconstrained form.

From-SVN: r193751

	* gcc-interface/decl.c (components_need_strict_alignment): New.
	(components_to_record): Do not pack the variants if one of the fields
	needs strict alignment.  Likewise for the variant part as a whole.
	Specify the position of the variants even if the size isn't specified,
	but do not specify the size of the variant part in this case.

From-SVN: r193750

	PR testsuite/52641
	* gcc.dg/unroll_5.c: Add dg-require-effective-target int32plus.
	* gcc.dg/pr55150-1.c: Same.
	* gcc.dg/torture/pr54894.c: Add size32plus.

From-SVN: r193749

re PR sanitizer/55435 ([asan] implement an attribute to disable asan instrumentation for a particular function)

	PR sanitizer/55435
	* c-common.c (handle_no_address_safety_analysis_attribute): New
	function.
	(c_common_attribute_table): Add no_address_safety_analysis.

	* asan.c (gate_asan): Don't instrument functions with
	no_address_safety_analysis attribute.
	(gate_asan_O0): Use !optimize && gate_asan ().
	* doc/extend.texi (no_address_safety_analysis): Document new
	function attribute.

	* c-c++-common/asan/attrib-1.c: New test.

From-SVN: r193748

	* predict.c (maybe_hot_count_p): Use threshold from profiled working
	set instead of hard limit.
	(cgraph_maybe_hot_edge_p): Invoke maybe_hot_count_p() instead of
	directly checking limit.
	* params.def (HOT_BB_COUNT_FRACTION): Remove.
	(HOT_BB_COUNT_WS_PERMILLE): New parameter.
	* invoke.texi (hot-bb-count-fraction): Remove.
	(hot-bb-count-ws-permille): Document.

Co-Authored-By: Jan Hubicka <jh@suse.cz>

From-SVN: r193747

From-SVN: r193743

2012-11-22  Vladimir Makarov  <vmakarov@redhat.com>

	PR middle-end/55430
	* lra.c: Move #include "hard-reg-set.h" before #include "rtl.h".
	(new_insn_reg): Update biggest_mode.
	(collect_non_operand_hard_regs): Check eliminable regs too.
	(initialize_lra_reg_info_element): Initialize biggest_mode.
	(add_regs_to_insn_regno_info): Ignore non-allocatable
	non-eliminable hard regs.
	(lra.c): Move setting lra_no_alloc_regs before
	init_insn_recog_data.
	* lra-constraints.c (simplify_operand_subreg): Add a comment.
	(lra_constraints): Ignore equivalent memory of
	regs occuring in paradoxical subregs.
	* lra-lives.c (lra_create_live_ranges): Add a comment.

From-SVN: r193742

	* tsan/Makefile.am (AM_CXXFLAGS): Remove -Wno-variadic-macros.
	* Makefile.am (SUBDIRS): Guard tsan addition with TSAN_SUPPORTED
	automake conditional instead of !MULTISUBDIR32.
	* configure.tgt: Set TSAN_SUPPORTED=yes for x86_64/i686-linux
	for 64-bit multilib.
	* configure.ac: Check for void * size, source in configure.tgt,
	define TSAN_SUPPORTED conditional instead of MULTILIBDIR32.
	* configure: Regenerated.
	* Makefile.in: Regenerated.
	* tsan/Makefile.in: Regenerated.

From-SVN: r193741

From-SVN: r193740

libsanitizer/
	* tsan: New directory. Import tsan runtime from llvm.
	* configure.ac: Add 64 bits tsan build.
	* Makefile.am: Likewise.
	* configure: Regenerated.
	* Makefile.in: Likewise.

From-SVN: r193737

2012-11-22  Dmitry Vyukov  <dvyukov@google.com>
	    Wei Mi  <wmi@google.com>

	* builtins.def (DEF_SANITIZER_BUILTIN): Define tsan builtins. 
	* sanitizer.def: Ditto. 
	* Makefile.in (tsan.o): Add tsan.o target. 
	(BUILTINS_DEF): Add sanitizer.def.
	* passes.c (init_optimization_passes): Add tsan passes.
	* tree-pass.h (register_pass_info): Ditto.
	* toplev.c (compile_file): Ditto. 
	* doc/invoke.texi: Document tsan related options.
	* gcc.c (LINK_COMMAND_SPEC): Add LIBTSAN_SPEC in link command if
	-fsanitize=thread.
	* tsan.c: New file about tsan.
	* tsan.h: Ditto.
	* common.opt: Add -fsanitize=thread.


Co-Authored-By: Wei Mi <wmi@google.com>

From-SVN: r193736

	* doc/md.texi (RTL Templates Transformation): Use @pxref for
	cross-reference in parentheses.

From-SVN: r193735

	* config/i386/i386.md (*jcc<mode>_0_i387): Macroize insn
	from *fp_jcc_3_387 using X87MODEF mode iterator.
	(*jcc<mode>_0_r_i387): New.
	(*jccxf_i387): Ditto.
	(*jccxf_r_i387): Ditto.
	(*jcc<mode>_i387): Macroize insn from *fp_jcc_1_387 using
	MODEF mode iterator.
	(*jcc<mode>_r_i387): Macroize insn from *fp_jcc_1r_387 using
	MODEF mode iterator.
	(*jccu<mode>_i387): Macroize insn from *fp_jcc_2_387 using
	X87MODEF mode iterator.
	(*jccu<mode>_r_i387): Macroize insn from *fp_jcc_2r_387 using
	X87MODEF mode iterator.
	(*jcc{,u}<mode>_i387 splitters): Macroize splitters using
	X87MODEF mode iterator.
	(*jcc<X87MODEF:mode>_<SWI24:mode>_i387): Macroize insn
	from *fp_jcc_4_<mode>_387 using X87MODEF mode iterator.
	(*jcc<X87MODEF:mode>_<SWI24:mode>_r_i387): New.
	(*jcc<X87MODEF:mode>_<SWI24:mode>_i387 splitters): Macroize
	splitters using X87MODEF and SWI24 mode iterators.

From-SVN: r193734

2012-11-22  Marcus Shawcroft  <marcus.shawcroft@arm.com>

	* doc/md.texi (AArch64 family): Remove Utf.

From-SVN: r193732

	* config/i386/i386.md (FPCMP): New mode iterator.
	(unord): New mode attribute.
	(*cmp<mode>_0_i387): Macroize insn from *cmpfp_0
	using X87MODEF mode iterator.
	(*cmp<mode>_0_cc_i387): Macroize insn from *cmpfp_0_cc using
	X87MODEF mode iterator.
	(*cmpxf_i387): Rename from *cmpfp_xf.
	(*cmpxf_cc_i387): Rename from *cmpfp_xf_cc.
	(*cmp<mode>_i387): Rename from *cmpfp_<mode>.
	(*cmp<mode>_cc_i387): Rename from *cmpfp_<mode>_cc.
	(*cmpu<mode>_i387): Macroize insn from *cmpfp_u using X87MODEF
	mode iterator.
	(*cmpu<mode>_cc_i387): Macroize insn from *cmpfp_u_cc using X87MODEF
	mode iterator.
	(*cmp<X87MODEF:mode>_<SWI24:mode>_i387): Macroize_insn from
	*cmpfp_<mode> using X87MODEF mode iterator.
	(*cmp<X87MODEF:mode>_<SWI24:mode>_cc_i387): Macroize_insn from
	*cmpfp_<mode>_cc using X87MODEF mode iterator.
	(*cmpi<FPCMP:unord><MODEF:mode>_mixed): Macroize insn from
	*cmpfp_i{,u}_mixed using FPCMP and MODEF mode iterators.
	(*cmpi<FPCMP:unord><MODEF:mode>_mixed): Macroize insn from
	*cmpfp_i{,u}_sse using FPCMP and MODEF mode iterators.
	(*cmpi<CCFPCMP:unord><X87MODEF:mode>_i387): Macroize insn from
	*cmpfp_i{,u}_387 using FPCMP and X87MODEF mode iterators.

From-SVN: r193731

From-SVN: r193729

	PR sanitizer/55379
	* gcc.c (LINK_COMMAND_SPEC): Issue an error for -static with
	-fsanitize=address.

From-SVN: r193728

	PR c++/55137
	* semantics.c (verify_constant): Track overflow separately.
	(reduced_constant_expression_p): Don't check it here.
	(cxx_eval_constant_expression): Check it on CSTs.
	(cxx_eval_outermost_constant_expr): Treat overflows as non-constant
	at this point, but still return the folded version.
	(potential_constant_expression_1): Don't check overflow.

From-SVN: r193727

	* call.c (extend_ref_init_temps_1): Recompute TREE_CONSTANT for
	the ADDR_EXPR.

From-SVN: r193726

	* gcc.c (ADD_STATIC_LIBASAN_LIBS): New macro.  Defined
	with STATIC_LIBASAN_LIBS.
	(LIBASAN_SPEC): Add STATIC_LIBASAN_LIBS.
	* config/gnu-user.h (STATIC_LIBASAN_LIBS): New macro.

From-SVN: r193725

2012-11-20  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>

	* config/arm/arm.md (*arm_abssi2): Define predicable attribute.
	(*arm_neg_abssi2): Likewise.
	* config/arm/thumb2.md (*thumb2_abssi2): Likewise.
	(*thumb2_neg_abssi2): Likewise.

From-SVN: r193724

2012-11-22  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/55432
	* g++.dg/cpp0x/constexpr-55432.C: New.

From-SVN: r193723

From-SVN: r193722

libgcc/
	Adjust decimal point of signed accum mode to GCC default.

	PR target/54222
	* config/avr/t-avr (LIB1ASMFUNCS): Add _fractsfsq _fractsfusq,
	_divqq_helper.
	* config/avr/lib1funcs-fixed.S (__fractqqsf, __fracthqsf)
	(__fractsasf, __fractsfha, __fractusqsf, __fractsfsa)
	(__mulha3, __mulsa3)
	(__divqq3, __divha3, __divsa3): Adjust to new position of
	decimal point of signed accum types. 
	
	(__mulusa3_round): New function.
	(__mulusa3): Use it.
	(__divqq_helper): New function.
	(__udivuqq3): Use it.

gcc/
	Adjust decimal point of signed accum mode to GCC default.

	PR target/54222
	* config/avr/avr-modes.def (HA, SA, DA): Remove mode adjustments.
	(TA): Move decimal point one bit to the right.
	* config/avr/avr.c (avr_out_fract): Rewrite.

From-SVN: r193721

2012-11-21  Matthias Klose  <doko@ubuntu.com>

        * configure.tgt (i[3456]86): Handle -mx32 like -m64.

From-SVN: r193720

From-SVN: r193719

2012-11-22  David S. Miller  <davem@davemloft.net>
            Tobias Burnus  <burnus@net-b.de>
            Joseph Myers  <joseph@codesourcery.com>

        * math/atanq.c (atanq): Update from GLIBC. Handle tiny and
        very large arguments properly.
        * math/j0q.c (y0q): Update from GLIBC. Avoid arithmetic
        underflow when 'x' is very small.
        * math/j1q.c (y1q): Ditto.
        * math/log1pq.c (log1pq): Update from GLIBC. Saturate
        nonzero exponents with absolute value below 0x1p-128 to
        +/- 0x1p-128.
        * math/powq.c (powq): Update from GLIBC. If xm1 is
        smaller than LDBL_EPSILON/2.0L, just return xm1.


Co-Authored-By: Joseph Myers <joseph@codesourcery.com>
Co-Authored-By: Tobias Burnus <burnus@net-b.de>

From-SVN: r193716