This patch improves LSHIFT_EXP expand if the shift operand comes from sign
extension and the shift result across word_mode_size boundary. See code
comments for details.

2015-08-19  Jiong.Wang  <jiong.wang@arm.com>

gcc/
  * expr.c (expand_expr_real_2): Check gimple statement during
  LSHIFT_EXPR expand.
  
gcc/testsuite
  * gcc.dg/wide_shift_64_1.c: New testcase.
  * gcc.dg/wide_shift_128_1.c: Likewise.
  * gcc.target/aarch64/ashlti3_1.c: Likewise.

From-SVN: r227018

       * common.opt (fstack-protector): Initialize to -1.
        (fstack-protector-all): Likewise.
        (fstack-protector-strong): Likewise.
        (fstack-protector-explicit): Likewise.
        * configure.ac: Add --enable-default-ssp.
        * defaults.h (DEFAULT_FLAG_SSP): New.  Default SSP to strong.
        * opts.c (finish_options): Update opts->x_flag_stack_protect if it is
        -1.
        * doc/install.texi: Document --enable-default-ssp.
        * config.in: Regenerated.
        * configure: Likewise.

        * lib/target-supports.exp
        (check_effective_target_fstack_protector_enabled): New test.
        * gcc.target/i386/ssp-default.c: New test.

From-SVN: r227017

Defer stack slot address assignment for all parms that can't live in
pseudos, and accept pseudos assignments in assign_param_setup_block.

for  gcc/ChangeLog

	PR rtl-optimization/64164
	* cfgexpand.c (parm_maybe_byref_p): Renamed to...
	(parm_in_stack_slot_p): ... this.  Disregard mode, what
	matters is whether the parm will live in a pseudo or a stack
	slot.
	(expand_one_ssa_partition): Deal with params without a default
	def.  Disregard mode.
	* cfgexpand.h: Renamed function declaration.
	* tree-ssa-coalesce.c: Adjust.
	* function.c (split_complex_args): Allocate stack slot for
	unassigned parms before splitting.
	(parm_in_unassigned_mem_p): New.  Use it instead of
	parm_maybe_byref_p throughout this file.
	(assign_parm_setup_block): Use it.  Accept pseudos in the
	expand-assigned rtl.
	(assign_parm_setup_reg): Drop BLKmode requirement.
	(assign_parm_setup_stack): Allocate and fill in the address of
	unassigned MEM parms.

From-SVN: r227015

2015-08-19  David Sherwood  <david.sherwood@arm.com>

    gcc/
	* genmodes.c (emit_mode_unit_size_inline): New function.
	(emit_mode_unit_precision_inline): New function.
	(emit_insn_modes_h): Emit new #define.  Emit new functions.
	(emit_mode_unit_size): New function.
	(emit_mode_unit_precision): New function.
	(emit_mode_adjustments): Add mode_unit_size adjustments.
	(emit_insn_modes_c): Emit new arrays.
	* machmode.h (GET_MODE_UNIT_SIZE, GET_MODE_UNIT_PRECISION): Update to
	use new inline methods.

From-SVN: r227013

	* config/aarch64/aarch64.c (bit_count): Delete prototype
	and definition.
	(aarch64_print_operand): Use popcount_hwi instead of the above.

From-SVN: r227012

	* config/aarch64/aarch64-option-extensions.def: Delete obsolete
	comment.

From-SVN: r227011

gcc/testsuite/
	PR fortran/66929
	* gfortran.dg/generic_31.f90: New.

From-SVN: r227010

	PR middle-end/67133
	* gimple-ssa-isolate-paths.c
	(insert_trap_and_remove_trailing_statements): Rename to ...
	(insert_trap): ... this.  Don't remove trailing statements; split
	block instead.
	(find_explicit_erroneous_behaviour): Don't remove all outgoing edges.

	* g++.dg/torture/pr67133.C: New test.

From-SVN: r227009

gcc/
	PR other/67042
	* hwint.h (sext_hwi): Switch to unsigned for the left shift, and
	conditionalize the whole on __GNUC__.  Add fallback code
	depending neither on undefined nor implementation-defined behaviour.

From-SVN: r227008

2015-08-19  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/c_global/cmath: Fix typo in comment.

From-SVN: r227007

2015-08-19  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/c_global/cmath: Revert fix for libstdc++/58625, no
	longer necessary (__builtin_signbit is now type-generic).

From-SVN: r227006

2015-08-19  Jiong Wang  <jiong.wang@arm.com>

gcc/
  * config/aarch64/aarch64.c (aarch64_load_symref_appropriately): Replace
  whitespaces with tab.

From-SVN: r227005

Due to PR67205, the deeply nested instantiations require trampolines,
which in turn requires an executable stack for the GNAT tools on
architectures such as x86_64.

From-SVN: r227004

From-SVN: r227003

	* config/arm/arm.c (bounds_check): Use %wd print format
	for HOST_WIDE_INT arguments.

From-SVN: r227002

gcc/c-family/ChangeLog:

2015-08-18  Trevor Saunders  <tbsaunde@tbsaunde.org>

	* c-ada-spec.h, c-common.c, c-common.h, c-format.c, c-format.h,
	c-objc.h, c-ppoutput.c, c-pragma.c, c-pragma.h: Remove useless
 typedefs.

gcc/c/ChangeLog:

2015-08-18  Trevor Saunders  <tbsaunde@tbsaunde.org>

	* c-aux-info.c, c-parser.c, c-tree.h: Remove useless typedefs.

gcc/cp/ChangeLog:

2015-08-18  Trevor Saunders  <tbsaunde@tbsaunde.org>

	* call.c, class.c, cp-tree.h, decl.c, except.c, mangle.c,
	method.c, name-lookup.h, parser.c, parser.h, rtti.c,
	semantics.c, typeck2.c: Remove useless typedefs.

gcc/fortran/ChangeLog:

2015-08-18  Trevor Saunders  <tbsaunde@tbsaunde.org>

	* dependency.c, dependency.h, gfortran.h, io.c, module.c,
	parse.h, resolve.c, trans-types.h, trans.h: remove useless
typedefs.

gcc/lto/ChangeLog:

2015-08-18  Trevor Saunders  <tbsaunde@tbsaunde.org>

	* lto.h: Remove useless typedefs.

gcc/objc/ChangeLog:

2015-08-18  Trevor Saunders  <tbsaunde@tbsaunde.org>

	* objc-act.h, objc-next-runtime-abi-02.c, objc-runtime-hooks.h:
	Remove useless typedefs.

gcc/ChangeLog:

2015-08-18  Trevor Saunders  <tbsaunde@tbsaunde.org>

	* bb-reorder.c, cfgloop.h, collect2.c, combine.c, dse.c,
	dwarf2cfi.c, gcse-common.h, genopinit.c, ggc-page.c, machmode.h,
	mcf.c, modulo-sched.c, omp-low.c, read-rtl.c, sched-rgn.c,
	signop.h, tree-call-cdce.c, tree-dfa.c, tree-diagnostic.c,
	tree-inline.h, tree-scalar-evolution.c, tree-ssa-address.c,
	tree-ssa-loop-niter.c, tree-ssa-loop.h, tree-ssa-pre.c,
	tree-ssa-reassoc.c, tree-ssa-sccvn.h, tree-ssa-structalias.c,
	tree-ssa-uninit.c, tree-ssa.h, tree-vect-loop-manip.c,
	tree-vectorizer.h, tree-vrp.c, var-tracking.c: Remove useless
typedefs.

From-SVN: r227001

gcc/ChangeLog:

2015-08-11  trevor Saunders  <tbsaunde@tbsaunde.org>

	* bt-load.c, cgraph.h, dwarf2out.c, dwarf2out.h, final.c,
	function.c, graphite-scop-detection.c, haifa-sched.c,
	ipa-devirt.c, ipa-split.c, recog.c, ree.c, stmt.c,
	tree-data-ref.c, tree-ssa-dom.c, tree-ssa-loop-ivopts.c,
	varasm.c: Remove typedefs of structs.

From-SVN: r227000

From-SVN: r226998

[gcc]

2015-08-18  Bill Schmidt  <wschmidt@vnet.linux.ibm.com>

	* config/rs6000/altivec.h (vec_adde): New define.
	(vec_addec): Likewise.
	(vec_double): Likewise.
	(vec_bperm): Likewise.
	(vec_gb): Likewise.
	* config/rs6000/rs6000-builtin.def (ADDE): New
	BU_ALTIVEC_OVERLOAD_3.
	(ADDEC): Likewise.
	(DOUBLE): New BU_VSX_OVERLOAD_1.
	* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add new
	entries for ALTIVEC_BUILTIN_VEC_ADDC, ALTIVEC_BUILTIN_VEC_ADDE,
	ALTIVEC_BUILTIN_VEC_ADDEC, ALTIVEC_BUILTIN_VEC_ANDC,
	VSX_BUILTIN_VEC_DOUBLE, ALTIVEC_BUILTIN_VEC_MERGEH,
	ALTIVEC_BUILTIN_VEC_MERGEL, ALTIVEC_BUILTIN_VEC_NOR,
	ALTIVEC_BUILTIN_VEC_OR, ALTIVEC_BUILTIN_VEC_XOR,
	ALTIVEC_BUILTIN_VEC_PERM, ALTIVEC_BUILTIN_VEC_SEL,
	P8V_BUILTIN_VEC_EQV, P8V_BUILTIN_VEC_NAND, P8V_BUILTIN_VEC_ORC,
	and P8V_BUILTIN_VEC_VBPERMQ.

[gcc/testsuite]

2015-08-18  Bill Schmidt  <wschmidt@vnet.linux.ibm.com>

	* gcc.target/powerpc/altivec-35.c: New test.
	* gcc.target/powerpc/p8vector-builtin-8.c: New test.
	* gcc.target/powerpc/vsx-vector-7.c: New test.

From-SVN: r226995

From-SVN: r226994

	PR c++/66919
	* g++.dg/cpp1y/auto-fn27.C: New.

From-SVN: r226993

	DR 1155
	* pt.c (convert_nontype_argument): Allow internal linkage in C++11
	and up.

From-SVN: r226992

	PR middle-end/36757

	* builtins.c (expand_builtin_signbit): Add asserts to make sure
	we can expand BUILT_IN_SIGNBIT inline.
	* builtins.def (BUILT_IN_SIGNBIT): Make type-generic.
	* doc/extend.texi: Document the type-generic __builtin_signbit.

	* c-common.c (check_builtin_function_arguments): Add check
	for BUILT_IN_SIGNBIT argument.

	* gcc.dg/builtins-error.c: Add checks for __builtin_signbit.
	* gcc.dg/tg-tests.h: Add checks for __builtin_signbit.

From-SVN: r226990

gcc/
	PR rtl-optimization/67218
	* simplify-rtx.c (exact_int_to_float_conversion_p): New function.
	(simplify_unary_operation_1): Use it.

gcc/testsuite/
	PR rtl-optimization/67218
	* gcc.c-torture/execute/ieee/pr67218.c,
	gcc.target/aarch64/fcvt_int_float_double1.c,
	gcc.target/aarch64/fcvt_int_float_double2.c,
	gcc.target/aarch64/fcvt_int_float_double3.c,
	gcc.target/aarch64/fcvt_int_float_double4.c,
	gcc.target/aarch64/fcvt_uint_float_double1.c,
	gcc.target/aarch64/fcvt_uint_float_double2.c,
	gcc.target/aarch64/fcvt_uint_float_double3.c,
	gcc.target/aarch64/fcvt_uint_float_double4.c: New tests.

From-SVN: r226987

	PR c++/67216
	* testsuite/tr1/2_general_utilities/shared_ptr/observers/bool_conv.cc:
	Fix use of safe-bool idiom that isn't valid in C++11.

From-SVN: r226986

From-SVN: r226985

re PR libstdc++/67066 (libstdc++-v3/src/filesystem/dir.cc fails to compile with --enable-concept-checks)

	PR libstdc++/67066
	* doc/xml/manual/configure.xml (manual.intro.setup.configure): Add
	caveats for --enable-concept-checks. Improve link text.
	* doc/xml/manual/diagnostics.xml (std.diagnostics.concept_checking):
	Clarify caveats.
	* doc/html/*: Regenerate.
	* include/bits/stl_deque.h (deque): Only use concept checks in C++03.
	* include/bits/stl_stack.h (stack): Likewise.
	* include/bits/stl_vector.h (vector): Likewise.

From-SVN: r226984

	* gcc.target/aarch64/atomic-comp-swap-release-acquire.c: Adjust
	dg-options to disable LSE extensions.
	* gcc.target/aarch64/atomic-op-acq_rel.c: Likewise.
	* gcc.target/aarch64/atomic-op-acquire.c: Likewise.
	* gcc.target/aarch64/atomic-op-char.c: Likewise.
	* gcc.target/aarch64/atomic-op-consume.c: Likewise.
	* gcc.target/aarch64/atomic-op-imm.c: Likewise.
	* gcc.target/aarch64/atomic-op-int.c: Likewise.
	* gcc.target/aarch64/atomic-op-long.c: Likewise.
	* gcc.target/aarch64/atomic-op-relaxed.c: Likewise.
	* gcc.target/aarch64/atomic-op-seq_cst.c: Likewise.
	* gcc.target/aarch64/atomic-op-release.c: Likewise.
	* gcc.target/aarch64/atomic-op-short.c: Likewise.
	* gcc.target/aarch64/sync-comp-swap.c: Likewise.
	* gcc.target/aarch64/sync-op-acquire.c: Likewise.
	* gcc.target/aarch64/sync-op-full.c: Likewise.
	* gcc.target/aarch64/sync-op-release.c: Likewise.

From-SVN: r226979

c-family/
2015-08-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67160
	* c-cppbuiltin.c (c_cpp_builtins): Fix __cpp_static_assert value
	in c++1z mode.

testsuite/
2015-08-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67160
	* g++.dg/cpp1z/feat-cxx1z.C: New.

From-SVN: r226972

	PR middle-end/67222
	* gimple-low.c (lower_stmt): Don't lower BUILT_IN_POSIX_MEMALIGN
	if the call isn't valid.
	* tree-ssa-alias.c (ref_maybe_used_by_call_p_1): Check builtins using
	gimple_call_builtin_p.
	(call_may_clobber_ref_p_1): Likewise.
	(stmt_kills_ref_p): Likewise.

	* gcc.dg/torture/pr67222.c: New test.

From-SVN: r226969

gcc/
	* config/mips/mips-protos.h (mips_hard_regno_rename_ok): New prototype.
	* config/mips/mips.c (mips_hard_regno_rename_ok): New function.
	(mips_hard_regno_scratch_ok): Likewise.
	(TARGET_HARD_REGNO_SCRATCH_OK): Define macro.
	* config/mips/mips.h (HARD_REGNO_RENAME_OK): New.

gcc/testsuite/
	* gcc.target/mips/interrupt_handler-bug-1.c: New test.

From-SVN: r226968

	* tree-ssa-loop-niter.c (refine_value_range_using_guard): New.
	(determine_value_range): Call refine_value_range_using_guard for
	each loop initial condition to improve value range.

	gcc/testsuite/ChangeLog
	* gcc.dg/tree-ssa/loop-bound-1.c: New test.
	* gcc.dg/tree-ssa/loop-bound-3.c: New test.
	* gcc.dg/tree-ssa/loop-bound-5.c: New test.

From-SVN: r226966

Returning context->cfa in _Unwind_GetCFA makes CFA point one stack frame
higher than what was actually used by code at context->ra. This results
in invalid CFA value in signal frames and premature unwinding completion
in forced unwinding used by uClibc NPTL thread cancellation.
Returning context->sp from _Unwind_GetCFA makes all CFA values valid and
matching code that used them.

2015-08-18  Max Filippov  <jcmvbkbc@gmail.com>
libgcc/
	* config/xtensa/unwind-dw2-xtensa.c (_Unwind_GetCFA): Return
	context->sp instead of context->cfa.

From-SVN: r226964

This allows having exception cleanup code in binaries that don't
register their unwind tables.

2015-08-18  Max Filippov  <jcmvbkbc@gmail.com>
libgcc/
	* config/xtensa/t-windowed (LIB2ADDEH): Replace unwind-dw2-fde
	with unwind-dw2-fde-dip.

From-SVN: r226963

Spilling windowed registers in userspace is much easier, more portable,
less error-prone and equally effective as in kernel. Now that register
spilling syscall is considered obsolete in the xtensa linux kernel
replace it with CALL12 followed by series of ENTRY in libgcc.

2015-08-18  Max Filippov  <jcmvbkbc@gmail.com>
libgcc/
	* config/xtensa/lib2funcs.S (__xtensa_libgcc_window_spill): Use
	CALL12 followed by series of ENTRY to spill windowed registers.
	(__xtensa_nonlocal_goto): Call __xtensa_libgcc_window_spill
	instead of making linux spill syscall.

From-SVN: r226962

From-SVN: r226961

gcc/testsuite/
	* gcc.target/mips/mips.exp (mips-dg-options): Redefine isa
	which is used in later code.

From-SVN: r226957

/cp
2015-08-17  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67216
	* call.c (null_ptr_cst_p): In C++11 return 'false' for 'false'.

/testsuite
2015-08-17  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/67216
	* g++.dg/cpp0x/nullptr34.C: New.
	* g++.dg/warn/Wconversion2.C: Adjust.
	* g++.dg/warn/Wnull-conversion-1.C: Likewise.
	* g++.old-deja/g++.other/null3.C: Likewise.

	* g++.dg/cpp0x/pr51313.C: Adjust.

From-SVN: r226956

	PR c++/67244
	* pt.c (tsubst_copy_and_build): Call insert_pending_capture_proxies.

From-SVN: r226950

re PR c++/67104 (Constant expression factory function initializes std::array with static storage duration strangely)

	PR c++/67104
	* constexpr.c (array_index_cmp, find_array_ctor_elt): New.
	(cxx_eval_array_reference, cxx_eval_store_expression): Use them.

From-SVN: r226949