* config/linux/x86/futex_bits.h (sys_futex0) [__x86_64__]: Change
	operands "op" and "val" to int.

	* config/linux/sh/futex_bits.h (sys_futex0) Change operands
	"op" and "val" to int.

	* config/linux/alpha/futex_bits.h (sys_futex0) Change operands
	"op" and "val" to int.

	* config/linux/futex.cc (gtm_futex_wait, gtm_futex_wake):
	Declare as static int.
	(FUTEX_PRIVATE_FLAG): Remove L suffix.
	* config/linux/futex_bits.h (sys_futex0) Change operand "op" to int.

	Revert:
	* config/linux/x86/futex.h (sys_futex0) [!__x86_64__]:
	Change operand "op" to long.

From-SVN: r223844

re PR libstdc++/65352 (array<T,0>::begin()/end() etc. forms a null reference and breaks on clang+ubsan)

	PR libstdc++/65352
	* include/profile/array (array::data): Use _S_ptr.
	* include/debug/array (array::data): Likewise.

From-SVN: r223838

	* gcc-interface/utils.c (max_size) <tcc_binary>: Add special code to
	deal with the subtraction of a "negative" value in an unsigned type.

From-SVN: r223837

decl.c (gnat_to_gnu_entity): Do not error out on a return type which has a size that overflows if...

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Subprogram_Type>: Do
	not error out on a return type which has a size that overflows if the
	return is done by invisible reference.

From-SVN: r223836

utils.c (gnat_pushdecl): Reunify the handling of array and pointer types wrt DECL_ORIGINAL_TYPE and...

	* gcc-interface/utils.c (gnat_pushdecl): Reunify the handling of array
	and pointer types wrt DECL_ORIGINAL_TYPE and adjust left and right.

From-SVN: r223835

	* gcc-interface/gigi.h (gnat_stabilize_reference): Adjust.
	(rewrite_fn): Remove third parameter.
	(type_is_padding_self_referential): New inline predicate.
	(return_type_with_variable_size_p): Likewise.
	* gcc-interface/decl.c (allocatable_size_p): More around.
	(cannot_be_superflat_p): Rename into...
	(cannot_be_superflat ): ...this.
	(initial_value_needs_conversion): New predicate.
	(gnat_to_gnu_entity): Invoke type_is_padding_self_referential,
	initial_value_needs_conversion and adjust to above renaming.
	For a renaming, force the materialization if the inner expression
	is compound.  Adjust calls to elaborate_reference and build a
	compound expression if needed.
	(struct er_dat): Add N field.
	(elaborate_reference_1): Remove N parameter and adjust.
	(elaborate_reference): Add INIT parameter and pass it in the call to
	gnat_rewrite_reference.  Adjust initial expression.
	* gcc-interface/trans.c (Call_to_gnu): Treat renamings the same way as
	regular object declarations when it comes to creating a temporary.
	Adjust call to gnat_stabilize_reference and build a compound expression
 	if needed.  Invoke return_type_with_variable_size_p.
	(gnat_to_gnu): Invoke type_is_padding_self_referential.  In case #4,
	return a call to a function unmodified if it returns with variable size
 	and is also the initial expression in an object declaration.
	* gcc-interface/utils2.c (build_binary_op) <INIT_EXPR>: Use the RHS'
	type if it is a call to a function that returns with variable size.
	(build_unary_op): Invoke type_is_padding_self_referential.
	(gnat_stabilize_reference_1): Remove N parameter and adjust.
	(gnat_stabilize_reference): Add INIT parameter and pass it in the call
	to gnat_rewrite_reference.
	(gnat_rewrite_reference):  Remove N, add INIT parameter and adjust.
	<COMPOUND_EXPR>: New case.

From-SVN: r223834

Spacing is off causing --help to not line up.  Use the standard
AS_HELP_STRING like all the other options.

From-SVN: r223833

Define CPP_SPEC for nios2 linux targets so that -posix & -pthread work
like on all other linux targets.

Discovered via Gentoo bug https://bugs.gentoo.org/543114

From-SVN: r223823

Define CPP_SPEC for microblaze linux targets so that -posix & -pthread
work like on all other linux targets.

Discovered via Gentoo bug https://bugs.gentoo.org/543114

From-SVN: r223822

	* config/linux/x86/futex.h (sys_futex0) [!__x86_64__]: Remove function.
	(futex_wait) [!__x86_64__]: Use __asm operand instead of sys_futex0.
	(futex_wake) [!__x86_64__]: Ditto.

From-SVN: r223821

Define CPP_SPEC for parisc linux targets so that -posix & -pthread work
like on all other linux targets.

Discovered via Gentoo bug https://bugs.gentoo.org/543114

From-SVN: r223820

2015-05-28  Richard Biener  <rguenther@suse.de>

	* tree-vect-loop.c (vect_fixup_reduc_chain): New function.
	(vect_fixup_scalar_cycles_with_patterns): Likewise.
	(vect_analyze_loop_2): Call vect_fixup_scalar_cycles_with_patterns
	after pattern recog.
	(vect_create_epilog_for_reduction): Properly handle reductions
	with patterns.
	(vectorizable_reduction): Likewise.
	* tree-vect-slp.c (vect_analyze_slp_instance): Properly mark
	reduction chains.
	(vect_get_constant_vectors): Create the correct number of
	initial values for reductions.
	(vect_schedule_slp_instance): Handle reduction chains that are
	type changing properly.
	* tree-vect-stmts.c (vect_analyze_stmt): Adjust.

	* gcc.dg/vect/slp-reduc-sad.c: New testcase.

From-SVN: r223818

2015-05-28  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch3.adb (Is_Visible_Component): Component is visible
	in a derived type if inherited through an ancestor that has a
	partial view of the original type holding the component, if the
	full view of that original type is in scope.
	* sem_util.ads (Get_Body_From_Stub): Works for all kinds of stubs.

2015-05-28  Bob Duff  <duff@adacore.com>

	* sem_util.adb (Requires_Transient_Scope): For definite untagged
	subtypes, we should never have to use the secondary stack. This moves
	toward that goal. But there are still cases that don't work.
	Here, we move the check for Is_Definite first, but add a
	special-purpose check for Has_Discrim_Dep_Array.

From-SVN: r223817

re PR tree-optimization/66142 (Loop is not vectorized because not sufficient support for GOMP_SIMD_LANE)

2015-05-28  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66142
	* tree-ssa-sccvn.c (vn_reference_lookup_3): Handle non-GIMPLE
	values better in memcpy destination handling.  Handle non-aliasing
	we discover here.

	* gcc.dg/tree-ssa/ssa-fre-44.c: Fixup.

From-SVN: r223816

sem_util.adb (Requires_Transient_Scope): Avoid returning function results on the secondary stack in so many cases.

2015-05-28  Bob Duff  <duff@adacore.com>

	* sem_util.adb (Requires_Transient_Scope): Avoid returning
	function results on the secondary stack in so many cases.

From-SVN: r223814

2015-05-28  Lawrence Velázquez  <vq@larryv.me>

	PR target/63810
	* config/darwin-c.c (version_components): New global enum.
	(parse_version, version_as_legacy_macro)
	(version_as_modern_macro, macosx_version_as_macro): New functions.
	(version_as_macro): Remove.
	(darwin_cpp_builtins): Use new function.

testsuite:
	PR target/63810
	* gcc.dg/darwin-minversion-3.c: Update testcase.
	* gcc.dg/darwin-minversion-4.c: Ditto.
	* gcc.dg/darwin-minversion-5.c: New testcase.
	* gcc.dg/darwin-minversion-6.c: Ditto.
	* gcc.dg/darwin-minversion-7.c: Ditto.
	* gcc.dg/darwin-minversion-8.c: Ditto.
	* gcc.dg/darwin-minversion-9.c: Ditto.
	* gcc.dg/darwin-minversion-10.c: Ditto.
	* gcc.dg/darwin-minversion-11.c: Ditto.
	* gcc.dg/darwin-minversion-12.c: Ditto.

From-SVN: r223808

re PR libstdc++/65352 (array<T,0>::begin()/end() etc. forms a null reference and breaks on clang+ubsan)

	PR libstdc++/65352
	* include/std/array (__array_traits::_S_ptr): New function.
	(array::data): Use _S_ptr to avoid creating invalid reference.
	* testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust
	dg-error line numbers.
	* testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
	likewise.

From-SVN: r223806

	* builtins.c (expand_builtin_acc_on_device): Mark parameters
	with ATTRIBUTE_UNUSED.

From-SVN: r223805

2015-05-28  Ed Schonberg  <schonberg@adacore.com>

	* sem_util.adb (Wrong_Type): In any instance, do not emit error
	if type of expression is the partial view of the expected type.

2015-05-28  Ed Schonberg  <schonberg@adacore.com>

	* sem_res.adb (Resolve_Actuals): a)  The replacement of formal
	names in named associations only needs to be done within an
	instance, on a call to a primitive of a formal derived type,
	where the actual subprogram may have different formal names than
	those of the primitive operation of the formal type.
	b) Defaulted parameters must be taken into account when obtaining
	the names of the formals of the actual subprogram being called.

From-SVN: r223804

	* oacc-init.c (resolve_device): Add FAIL_IS_ERROR argument. Update
	function comment. Only call gomp_fatal if new argument is true.
	(acc_dev_num_out_of_range): New function.
	(acc_init_1, acc_shutdown_1): Update call to resolve_device. Call
	acc_dev_num_out_of_range as appropriate.
	(acc_get_num_devices, acc_set_device_type, acc_get_device_type)
	(acc_get_device_num, acc_set_device_num): Update calls to resolve_device.
	* testsuite/libgomp.oacc-c-c++-common/lib-4.c: Update expected test
	output.

From-SVN: r223803

    PR libgomp/65742

    gcc/
    * builtins.c (expand_builtin_acc_on_device): Don't use open-coded
    sequence for !ACCEL_COMPILER.

    libgomp/
    * oacc-init.c (plugin/plugin-host.h): Include.
    (acc_on_device): Check whether we're in an offloaded region for
    host_nonshm
    plugin. Don't use __builtin_acc_on_device.
    * plugin/plugin-host.c (GOMP_OFFLOAD_openacc_parallel): Set
    nonshm_exec flag in thread-local data.
    (GOMP_OFFLOAD_openacc_create_thread_data): Allocate thread-local
    data for host_nonshm plugin.
    (GOMP_OFFLOAD_openacc_destroy_thread_data): Free thread-local data
    for host_nonshm plugin.
    * plugin/plugin-host.h: New.

From-SVN: r223801

2015-05-28  Robert Dewar  <dewar@adacore.com>

	* sem_ch13.adb, sem_disp.ads: Minor reformatting.

2015-05-28  Ed Schonberg  <schonberg@adacore.com>

	* sem_util.adb (Set_Debug_Info_Needed): For a private type
	whose full view is itself a derived private type, set flag on
	underlying full view as well, for proper gdb display.

2015-05-28  Bob Duff  <duff@adacore.com>

	* exp_tss.ads: Minor comment fix.
	* exp_ch3.adb (Build_Array_Init_Proc, Build_Record_Init_Proc):
	Inline init_procs when the type has controlled parts. Remove
	obsolete comments about those init_procs -- init_procs for
	such types are no longer complex. A typical init_proc just
	initializes the 'Tag field, and calls the parent init_proc
	(e.g. for Limited_Controlled), which calls the grandparent
	(for Root_Controlled), which does nothing. This all boils down
	to one instruction when inlined.
	* exp_ch7.adb (Create_Finalizer): Inline the finalizer.

2015-05-28  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb (Analyze_Selected_Component): If the type to use
	is a derived type and is a generic actual, the selected component
	appears within an instance body, and the check over the type
	has failed, examine ancestor types for the desired component.
	(Find_Component_In_Instance): If record type is a derived type,
	examine all ancestors in order to locate desired component.

From-SVN: r223800

	* config/rx/rx.c (push_regs): New function.  Extracts code from...
	(rx_expand_prologue): ... here.  Use push_regs to push even small
	spans of registers.
	(pop_regs): New function.
	(rx_expand_epilogue):  Use pop_regs to pop even small spans of
	registers.

From-SVN: r223799

2015-05-28  Richard Biener  <rguenther@suse.de>

	* tree-vectorizer.h (struct _slp_instance): Remove body_cost_vec
	member.
	(SLP_INSTANCE_BODY_COST_VEC): Remove.
	(vect_update_slp_costs_according_to_vf): Likewise.
	(vect_slp_analyze_operations): Update prototype.
	* tree-vect-loop.c (vect_analyze_loop_2): Remove call to
	vect_update_slp_costs_according_to_vf, adjust.
	* tree-vect-slp.c (vect_free_slp_instance): Adjust.
	(vect_analyze_slp_cost_1): Likewise.
	(vect_analyze_slp_cost): Likewise.  Properly deal with
	widening reduction ops.  Commit body costs.
	(vect_analyze_slp_instance): Adjust.  Do not analyze SLP
	cost for loops from here.
	(vect_slp_analyze_operations): But do it from here when
	the vectorization factor is known and stmts are analyzed.
	(vect_bb_vectorization_profitable_p): Simplify.
	(vect_slp_analyze_bb_1): Do not compute SLP cost here.
	(vect_update_slp_costs_according_to_vf): Remove.

From-SVN: r223798

Add --enable-default-pie option to configure GCC to generate PIE by
default.

gcc/

	* Makefile.in (COMPILER): Add @NO_PIE_CFLAGS@.
	(BUILD_CFLAGS): Likewise.
	(BUILD_CXXFLAGS): Likewise.
	(LINKER): Add @NO_PIE_FLAG@.
	(BUILD_LDFLAGS): Likewise.
	(libgcc.mvars): Set NO_PIE_CFLAGS to -fno-PIE for
	--enable-default-pie.
	* common.opt (fPIE): Initialize to -1.
	(fpie): Likewise.
	(no-pie): New option.
	(pie): Replace "Negative(shared)" with "Negative(no-pie)".
	* configure.ac: Add --enable-default-pie.
	(NO_PIE_CFLAGS): New.  Check if -fno-PIE works.  AC_SUBST.
	(NO_PIE_FLAG): New.  Check if -no-pie works.  AC_SUBST.
	* defaults.h (DEFAULT_FLAG_PIE): New.  Default PIE to -fPIE.
	* gcc.c (NO_PIE_SPEC): New.
	(PIE_SPEC): Likewise.
	(NO_FPIE1_SPEC): Likewise.
	(FPIE1_SPEC): Likewise.
	(NO_FPIE2_SPEC): Likewise.
	(FPIE2_SPEC): Likewise.
	(NO_FPIE2_SPEC): Likewise.
	(FPIE_SPEC): Likewise.
	(NO_FPIE_SPEC): Likewise.
	(NO_FPIC1_SPEC): Likewise.
	(FPIC1_SPEC): Likewise.
	(NO_FPIC2_SPEC): Likewise.
	(FPIC2_SPEC): Likewise.
	(NO_FPIC2_SPEC): Likewise.
	(FPIC_SPEC): Likewise.
	(NO_FPIC_SPEC): Likewise.
	(NO_FPIE1_AND_FPIC1_SPEC): Likewise.
	(FPIE1_OR_FPIC1_SPEC): Likewise.
	(NO_FPIE2_AND_FPIC2_SPEC): Likewise.
	(FPIE2_OR_FPIC2_SPEC): Likewise.
	(NO_FPIE_AND_FPIC_SPEC): Likewise.
	(FPIE_OR_FPIC_SPEC): Likewise.
	(LD_PIE_SPEC): Likewise.
	(LINK_PIE_SPEC): Handle -no-pie.  Use PIE_SPEC and LD_PIE_SPEC.
	* opts.c (finish_options): Update opts->x_flag_pie if it is -1.
	* config/darwin.h (PIE_SPEC): Renamed to ...
	(DARWIN_PIE_SPEC): This.
	(LINK_SPEC): Replace PIE_SPEC with DARWIN_PIE_SPEC.
	* config/darwin9.h (PIE_SPEC): Renamed to ...
	(DARWIN_PIE_SPEC): This.
	* config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Use
	PIE_SPEC and NO_PIE_SPEC if HAVE_LD_PIE is defined.
	* config/openbsd.h (ASM_SPEC): Use FPIE1_OR_FPIC1_SPEC and
	FPIE2_OR_FPIC2_SPEC.
	* config/m68k/netbsd-elf.h (ASM_SPEC): Likewise.
	* config/m68k/openbsd.h (ASM_SPEC): Likewise.
	* gcc/config/sol2.h (ASM_PIC_SPEC): Likewise.
	* config/arm/freebsd.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise.
	* config/arm/netbsd-elf.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise.
	* config/arm/semi.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise.
	* config/cris/linux.h (CRIS_ASM_SUBTARGET_SPEC): Likewise.
	* config/m32r/m32r.h (ASM_SPEC): Likewise.
	* config/m68k/uclinux.h (DRIVER_SELF_SPECS): Likewise.
	* config/rs6000/linux64.h (ASM_SPEC32): Likewise.
	* config/rs6000/sysv4.h (ASM_SPEC): Likewise.
	* config/sparc/freebsd.h (ASM_SPEC): Likewise.
	* config/sparc/linux.h (ASM_SPEC): Likewise.
	* config/sparc/linux64.h (ASM_SPEC): Likewise.
	* config/sparc/netbsd-elf.h (ASM_SPEC): Likewise.
	* config/sparc/openbsd64.h (ASM_SPEC): Likewise.
	* config/sparc/sp-elf.h (ASM_SPEC): Likewise.
	* config/sparc/sp64-elf.h (ASM_SPEC): Likewise.
	* config/sparc/sparc.h (ASM_SPEC): Likewise.
	* config/sparc/sysv4.h (ASM_SPEC): Likewise.
	* config/sparc/vxworks.h (ASM_SPEC): Likewise.
	* config/c6x/elf-common.h (ASM_SPEC): Use NO_FPIC2_SPEC,
	FPIC2_SPEC, FPIC1_SPEC and FPIC2_SPEC.
	* config/c6x/uclinux-elf.h (LINK_SPEC): Use FPIE_SPEC.
	* config/frv/frv.h (DRIVER_SELF_SPECS): Use FPIC_SPEC,
	NO_FPIC_SPEC and NO_FPIE1_AND_FPIC1_SPEC.
	(ASM_SPEC): Use FPIE1_OR_FPIC1_SPEC and FPIE2_OR_FPIC2_SPEC.
	* config/m68k/m68k.h (ASM_PCREL_SPEC): Use FPIC_SPEC and
	NO_FPIC_SPEC.
	* config/mips/gnu-user.h (NO_SHARED_SPECS): Use
	NO_FPIE_AND_FPIC_SPEC.
	* config/mips/vxworks.h (SUBTARGET_ASM_SPEC): Use FPIC_SPEC.
	* config/rs6000/freebsd64.h (ASM_SPEC32): Likewise.
	* config/rs6000/vxworks.h (ASM_SPEC): Likewise.
	* config/vax/linux.h (ASM_SPEC): Likewise.
	* doc/install.texi: Document --enable-default-pie.
	* doc/invoke.texi: Document -no-pie.
	* config.in: Regenerated.
	* configure: Likewise.

gcc/ada/

	* gcc-interface/Makefile.in (TOOLS_LIBS): Add @NO_PIE_FLAG@.

libgcc/

	* Makefile.in (CRTSTUFF_CFLAGS): Add $(NO_PIE_CFLAGS).

From-SVN: r223796

From-SVN: r223795

	PR target/66148
	* config/pa/pa.c (pa_emit_move_sequence): Correct placement of
	REG_EQUAL note when doing insert.

From-SVN: r223791

	* config/pa/pa.c (pa_print_operand): Use HOST_WIDE_INT_PRINT_DEC
	instead of "%d" for 'o' operand.

From-SVN: r223790

From-SVN: r223788

        PR target/39726
        * gcc.dg/target/m68k/pr39726-1.c: New test.

From-SVN: r223781

2015-05-27  Uros Bizjak  <ubizjak@gmail.com>

	* config/linux/wait.h (gomp_futex_wait, gomp_futex_wake):
	Declare as int.
	(FUTEX_PRIVATE_FLAG): Remove L suffix.
	* config/linux/mutex.c (gomp_futex_wait, gomp_futex_wake):
	Declare as int.

2015-05-27  Uros Bizjak  <ubizjak@gmail.com>

	* config/linux/ia64/futex.h (sys_futex0) Change operand "op" to int.

2015-05-27  Uros Bizjak  <ubizjak@gmail.com>

	Revert:
	* config/linux/x86/futex.h (sys_futex0) [!__x86_64__]:
	Change operand "op" to long.

From-SVN: r223780

decl.c (check_redeclaration_exception_specification): Depend on -Wsystem-headers rather than -pedantic.

	* decl.c (check_redeclaration_exception_specification): Depend on
	-Wsystem-headers rather than -pedantic.

From-SVN: r223778

decl.c (warn_extern_redeclared_static): Use the location of newdecl in diagnostics, not input_location.

	* decl.c (warn_extern_redeclared_static): Use the location of
	newdecl in diagnostics, not input_location.
	(validate_constexpr_redeclaration): Likewise.
	(check_redeclaration_no_default_args): Likewise.
	(duplicate_decls): Likewise.
	(check_redeclaration_exception_specification): Likewise.
	Change second diagnostic to inform.

From-SVN: r223777

From-SVN: r223775

From-SVN: r223774

	PR c++/66270
	* tree.c (build_pointer_type_for_mode): Canonical type does not
	inherit can_alias_all.
	(build_reference_type_for_mode): Likewise.

	PR c++/66270
	* g++.dg/ext/alias-canon3.C: New.

From-SVN: r223773

trans.c (elaborate_all_entities): Do not elaborate an incomplete type coming from a limited_with and whose...

	* gcc-interface/trans.c (elaborate_all_entities): Do not elaborate an
	incomplete type coming from a limited_with and whose non-limited view
	comes from the main unit.

From-SVN: r223772

libgomp/ChangeLog:

	* config/linux/x86/futex.h (sys_futex0) [!__x86_64__]:
	Change operand "op" to long.
	[__PIC__]: Remove sys_futex0 function.

libitm/ChangeLog:

	* config/linux/x86/futex_bits.h (sys_futex0) [!__x86_64__]:
	Change operand "op" to long.
	[__PIC__]: Remove sys_futex0 function.

From-SVN: r223771

	* expr.h (array_at_struct_end_p): Move to...
	(array_ref_element_size): Likewise.
	(component_ref_field_offset): Likewise.
	* tree.h (array_ref_element_size): ...here.
	(array_at_struct_end_p): Likewise.
	(component_ref_field_offset): Likewise.
	* expr.c (array_ref_element_size): Move to...
	(array_ref_low_bound): Likewise.
	(array_at_struct_end_p): Likewise.
	(array_ref_up_bound): Likewise.
	(component_ref_field_offset): Likewise.
	* tree.c (array_ref_element_size): ...here.
	(array_ref_low_bound): Likewise.
	(array_ref_up_bound): Likewise.
	(array_at_struct_end_p): Likewise.
	(component_ref_field_offset): Likewise.

From-SVN: r223768

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Variable>: Move down
	code applying atomic checks to the object.

From-SVN: r223767