From-SVN: r226538

    
    The struct RawSockaddr contains a field Data which
    should be uint8 on ppc64 and ppc64le, but is declared
    as int8 in gccgo.  This change adds a two new files
    which contain the structure declaration for
    RawSockaddr, one with the correct types for for ppc64
    and ppc64le, and the other for non-ppc64 platforms.
    
    Fixes golang/go#11469
    
    Reviewed-on: https://go-review.googlesource.com/11946

From-SVN: r226533

gcc/
	* config/rs6000/htm.md (tabort.): Restrict the source operand to
	using a base register.

gcc/testsuite/
	* gcc.target/powerpc/htm-tabort-no-r0.c: New test.

From-SVN: r226532

gcc/ChangeLog:
	* main.c (main): Pass in NULL for toplev's external_timer.
	* timevar.c: Include coretypes.h.
	(class timer::named_items): New.
	(timer::named_items::named_items): New.
	(timer::named_items::~named_items): New.
	(timer::named_items::push): New.
	(timer::named_items::pop): New.
	(timer::named_items::print): New.
	(timer::timer): Initialize field "m_jit_client_items".
	(timer::~timer): New.
	(timer::push): Move bulk of implementation to...
	(timer::push_internal): ...here.  New function.
	(timer::pop): Move bulk of implementation to...
	(timer::pop_internal): ...here.  New function.
	(timer::push_client_item): New.
	(timer::pop_client_item): New.
	(timer::print_row): New function, taken from timer::print.
	(timer::print): Print "GCC items" header if we also have client
	items.  Move row-printing to timer::print_row.  Print any client
	items.
	(timer::get_topmost_item_name): New method.
	* timevar.def (TV_JIT_ACQUIRING_MUTEX): New.
	(TV_JIT_CLIENT_CODE): New.
	* timevar.h (timer::push_client_item): New declaration.
	(timer::pop_client_item): New declaration.
	(timer::get_topmost_item_name): New method.
	(timer::push_internal): New declaration.
	(timer::pop_internal): New declaration.
	(timer::print_row): New declaration.
	(timer::named_items): New declaration.
	(timer::m_jit_client_items): New field.
	(timer): Add friend class named_items.
	(auto_timevar::auto_timevar): Add timer param.
	(auto_timevar::~auto_timevar): Use field "m_timer".
	(auto_timevar::m_timer): New field.
	* toplev.c (initialize_rtl): Add g_timer as param when
	constructing auto_timevar instance.
	(toplev::toplev): Add "external_timer" param, and use it to
	initialize the "g_timer" global if non-NULL.
	(toplev::~toplev): If this created "g_timer", delete it.
	* toplev.h (toplev::toplev): Replace "use_TV_TOTAL" bool param
	with "external_timer" timer *.

gcc/jit/ChangeLog:
	* docs/topics/compatibility.rst (LIBGCCJIT_ABI_4): New.
	* docs/topics/contexts.rst (GCC_JIT_BOOL_OPTION_DUMP_SUMMARY):
	We no longer show a profile.
	* docs/topics/index.rst (Topic Reference): Add performance.rst.
	* docs/topics/performance.rst: New file.
	* docs/_build/texinfo/libgccjit.texi: Regenerate.
	* jit-playback.c (gcc::jit::playback::context::compile): Add timer
	param when constructing the "toplev" instance.
	(gcc::jit::playback::context::acquire_mutex): Add timer param when
	constructing auto_timevar instance.
	(gcc::jit::playback::context::make_fake_args): If we have a timer,
	add "-ftime-report".
	(gcc::jit::playback::context::invoke_driver): Add timer param when
	constructing auto_timevar instance.
	(gcc::jit::playback::context::dlopen_built_dso): Likewise.
	* jit-playback.h (gcc::jit::playback::context::get_timer): New accessor.
	* jit-recording.c: Include timevar.h.
	(gcc::jit::recording::context::context): Initialize field "m_timer".
	* jit-recording.h: Add forward declaration of class timer.
	(gcc::jit::recording::context::set_timer): New method.
	(gcc::jit::recording::context::get_timer): New method.
	(gcc::jit::recording::context::m_timer): New field.
	* libgccjit++.h (gccjit::timer): New class.
	(gccjit::auto_time): New class.
	(gccjit::context::set_timer): New method.
	(gccjit::context::get_timer): New.
	(gccjit::timer::timer): New.
	(gccjit::timer::push): New.
	(gccjit::timer::pop): New.
	(timer::print): New.
	(timer::get_inner_timer): New.
	(timer::release): New.
	(auto_time::auto_time): New.
	(auto_time::~auto_time): New.
	* libgccjit.c: Include timevar.h.
	(struct gcc_jit_timer): New.
	(gcc_jit_timer_new): New function.
	(gcc_jit_timer_release): New function.
	(gcc_jit_context_set_timer): New function.
	(gcc_jit_context_get_timer): New function.
	(gcc_jit_timer_push): New function.
	(gcc_jit_timer_pop): New function.
	(gcc_jit_timer_print): New function.
	* libgccjit.h (LIBGCCJIT_HAVE_TIMING_API): New macro.
	(gcc_jit_timer): New typedef.
	(gcc_jit_timer_new): New function.
	(gcc_jit_timer_release): New function.
	(gcc_jit_context_set_timer): New function.
	(gcc_jit_context_get_timer): New function.
	(gcc_jit_timer_push): New function.
	(gcc_jit_timer_pop): New function.
	(gcc_jit_timer_print): New function.
	* libgccjit.map (LIBGCCJIT_ABI_4): New.
	(gcc_jit_timer_new): New function.
	(gcc_jit_timer_release): New function.
	(gcc_jit_context_set_timer): New function.
	(gcc_jit_context_get_timer): New function.
	(gcc_jit_timer_push): New function.
	(gcc_jit_timer_pop): New function.
	(gcc_jit_timer_print): New function.

gcc/testsuite/ChangeLog:
	* jit.dg/test-benchmark.c (test_jit): Add param "timer" and use
	it to push/pop timing items.
	(main): For each optimization level, create a gcc_jit_timer, and
	time all of the iteration within that level cumulatively.
	* jit.dg/test-error-gcc_jit_timer_pop-mismatch.c: New test case.
	* jit.dg/test-error-gcc_jit_timer_pop-too-many.c: New test case.

From-SVN: r226530

    
    Fixes golang/go#11573.
    
    Reviewed-on: https://go-review.googlesource.com/12508

From-SVN: r226529

	PR middle-end/64744
	PR middle-end/48470
	PR middle-end/43404
	* cfgexpand.c (expand_one_var): Add check if stack is going to
	be used in naked function.
	* expr.c (expand_expr_addr_expr_1): Remove excess checking
	whether expression should not reside in MEM.
	* function.c (use_register_for_decl): Do not use registers for
	non-register things (volatile, float, BLKMode) in naked functions.

	PR middle-end/64744
	PR middle-end/48470
	PR middle-end/43404
	* gcc.target/arm/pr43404.c : New testcase.
	* gcc.target/arm/pr48470.c : New testcase.
	* gcc.target/arm/pr64744-1.c : New testcase.
	* gcc.target/arm/pr64744-2.c : New testcase.

From-SVN: r226528

    
    There is no need to make type descriptors for named types when there
    are errors during package compilation.  Particularly, if the error in
    package compilation is from a malformed named type, there is no
    guarantee a type descriptor can be created.
    
    Fixes golang/go#11560.
    
    Reviewed-on: https://go-review.googlesource.com/12792

From-SVN: r226527

    
    This change modifies the "gotest" shell script
    to kill all processes, including "sleep", spawned
    by the timeout subshell. This prevents the sleep
    process from living beyond the gotest process.
    
    BACKGROUND
    
    The "gotest" shell script spawns "sleep" processes
    in the background to kill off test cases that run
    past their specified timeout. There are commands
    included that appear to kill the sleep process,
    but they only kill the parent shell, causing the
    sleep process to reparent.
    
    The orphaned sleep process can cause issues when
    gotest is run under some build systems, such as
    Ninja [0]. The particular issue with Ninja is the
    method it uses to identify terminated processes:
    it creates a pipe, passes the write end to the
    child process, and waits for EOF. In the case of
    libgo/gotest, the orphaned sleep process inherits
    the pipe FD and keeps it open for 4 minutes by
    default.
    
    [0] https://github.com/martine/ninja
    
    Reviewed-on: https://go-review.googlesource.com/12227

From-SVN: r226526

re PR go/67101 (mprof.goc:408:5: error: calling ‘__builtin_frame_address’ with a nonzero argument is unsafe [-Werror=frame-address])

	PR go/67101

    runtime: Remove call to __builtin_frame_address.
    
    __builtin_frame_address was only supposed to use nonzero arguments
    for debugging purposes.  Calling it with nonzero arguments can have
    unpredictable results and uses are now marked unsafe when
    -Wframe-address is enabled.
    
    Reviewed-on: https://go-review.googlesource.com/13063

From-SVN: r226525

	PR target/67060
	* config/pa/pa.md (call_reg_64bit): Remove reg:DI 1 clobber.
	Adjust splits to match new pattern.

From-SVN: r226522

2015-08-03  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/vector.md (VEC_L): Add KFmode and TFmode.
	(VEC_M): Likewise.
	(VEC_N): Likewise.
	(mov<mode>, VEC_M iterator): Add support for IEEE 128-bit floating
	point in VSX registers.

	* config/rs6000/constraints.md (wb constraint): Document unused
	w<x> constraint.
	(we constraint): Likewise.
	(wo constraint): Likewise.
	(wp constraint): New constraint for IEEE 128-bit floating point in
	VSX registers.
	(wq constraint): Likewise.

	* config/rs6000/predicates.md (easy_fp_constant): Add support for
	IEEE 128-bit floating point in VSX registers.
	(easy_scalar_constant): Likewise.

	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Add new
	constraints (wp, wq) for IEEE 128-bit floating point in VSX
	registers.
	(rs6000_init_hard_regno_mode_ok): Likewise.

	* config/rs6000/vsx.md (VSX_LE_128): Add support for IEEE 128-bit
	floating point in VSX registers.
	(VSX_L): Likewise.
	(VSX_M): Likewise.
	(VSX_M2): Likewise.
	(VSm): Likewise.
	(VSs): Likewise.
	(VSr): Likewise.
	(VSa): Likewise.
	(VSv): Likewise.
	(vsx_le_permute_<mode>): Add support to properly swap bytes for
	IEEE 128-bit floating point in VSX registers on little endian.
	(vsx_le_undo_permute_<mode>): Likewise.
	(vsx_le_perm_load_<mode>): Likewise.
	(vsx_le_perm_store_<mode>): Likewise.
	(splitters for IEEE 128-bit fp moves): Likewise.

	* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Add wp and
	wq constraints.

	* config/rs6000/altivec.md (VM): Add support for IEEE 128-bit
	floating point in VSX registers.
	(VM2): Likewise.

	* doc/md.text (Machine Constraints): Document wp and wq
	constraints on PowerPC.

From-SVN: r226520

	PR tree-optimization/67077
	* gcc.dg/pr67077.c: New test.

From-SVN: r226518

re PR fortran/66942 (trans-expr.c:5701 runtime error: member call on null pointer of type 'struct vec')

2015-08-03  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/66942
	* trans-expr.c (gfc_conv_procedure_call): Avoid NULL pointer reference

From-SVN: r226517

	PR middle-end/66314
	PR gcov-profile/66899
	* tree-ssa-threadupdate.c (mark_threaded_blocks): Correctly
	iterate over the jump threading paths when an element in the
	jump threading paths array is eliminated.

	PR middle-end/66314
	PR gcov-profile/66899
	* gcc.dg/pr66899.c: New test.
	* gcc.dg/pr66314.c: New test.

From-SVN: r226516

re PR libstdc++/67078 (FAIL: 24_iterators/container_access.cc (test for excess errors) on aarch64-none-elf)

	PR libstdc++/67078
	* include/bits/range_access.h (size, empty, data): Fix _N bad name.

From-SVN: r226515

From-SVN: r226514

gcc/ChangeLog:

	* tree-ssa-uninit.c (find_uninit_use): Declare and pass to
	is_use_properly_guarded the variable def_preds.  Free its
	contents before returning.
	(prune_uninit_phi_opnds_in_unrealizable_paths): Same.
	(is_use_properly_guarded): Replace local variable def_preds with
	a parameter.  Adjust accordingly.  Only update *def_preds if it's
	the empty vector.

From-SVN: r226511

	PR c/67088
	* c-decl.c (check_bitfield_type_and_width): Add location parameter.
	Use it.
	(grokdeclarator): Pass LOC down to check_bitfield_type_and_width.

	* gcc.dg/pr67088.c: New test.

From-SVN: r226506

2015-08-03  Richard Biener  <rguenther@suse.de>

	* genmatch.c (simplify::for_subst_vec): New member.
	(binary_ok): New helper for for lowering.
	(lower_for): Delay substituting operators into result expressions
	if we can merge the results eventually again.
	(capture_info::walk_result): Adjust for user_id appearing as
	result expression operator.
	(expr::gen_transform): Likewise.
	(dt_simplify::gen_1): Likewise.
	(dt_simplify::gen): Pass not substituted operators to tail
	functions or initialize local variable with it.
	(decision_tree::gen): Adjust function signature.
	* match.pd: Fix tests against global code and add default
	cases to switch stmts.

From-SVN: r226505

2015-08-03  Richard Biener  <rguenther@suse.de>

	* genmatch.c (simplify::for_subst_vec): New member.
	(binary_ok): New helper for for lowering.
	(lower_for): Delay substituting operators into result expressions
	if we can merge the results eventually again.
	(capture_info::walk_result): Adjust for user_id appearing as
	result expression operator.
	(expr::gen_transform): Likewise.
	(dt_simplify::gen_1): Likewise.
	(dt_simplify::gen): Pass not substituted operators to tail
	functions or initialize local variable with it.
	(decision_tree::gen): Adjust function signature.
	* match.pd: Fix tests against global code and add default
	cases to switch stmts.

From-SVN: r226504

2015-08-03  Richard Biener  <rguenther@suse.de>

	* genmatch.c (dt_simplify::gen): Create captures array
	with an initializer.

From-SVN: r226503

gcc/ChangeLog:

	* configure.ac: Set aliasing_flags to -fno-strict-aliasing if
	the host compiler is affected by placement new aliasing bug.
	* configure: Regenerate.
	* Makefile.in (ALIASING_FLAGS): New variable.
	(ALL_CXXFLAGS): Add $(ALIASING_FLAGS).

From-SVN: r226499

gcc:

	PR target/66731
	* config/arm/vfp.md (negmuldf3_vfp): Add new pattern.
	(negmulsf3_vfp): Likewise.
	(muldf3negdf_vfp): Disable for -frounding-math.
	(mulsf3negsf_vfp): Likewise.
	* config/arm/arm.c (arm_new_rtx_costs): Fix NEG cost for VNMUL,
	fix MULT cost with -frounding-math.

gcc/testsuite:

	PR target/66731
	* gcc.target/arm/vnmul-1.c: New.
	* gcc.target/arm/vnmul-2.c: New.
	* gcc.target/arm/vnmul-3.c: New.
	* gcc.target/arm/vnmul-4.c: New.

From-SVN: r226496

	PR fortran/64921
gcc/fortran/
	* class.c (generate_finalization_wrapper): Set finalization
	procedure symbol's always_explicit attribute.
gcc/testsuite/
	* gfortran.dg/class_allocate_20.f90: New.

From-SVN: r226493

	* ifcvt.c (noce_try_store_flag_constants): Make logic of the case
	when diff == STORE_FLAG_VALUE or diff == -STORE_FLAG_VALUE more
	explicit.  Prefer to add the flag whenever possible.
	(noce_process_if_block): Try noce_try_store_flag_constants before
	noce_try_cmove.

	* gcc.target/aarch64/csel_bfx_1.c: New test.
	* gcc.target/aarch64/csel_imms_inc_1.c: Likewise.

From-SVN: r226491

2015-08-03  Richard Biener  <rguenther@suse.de>

	* genmatch.c (struct sinfo, struct sinfo_hashmap_traits, sinfo_map_t):
	New hash-map to record equivalent transforms.
	(dt_node::analyze): Populate the equivalent transforms hash-map.
	(dt_simplify::info): Add reference to hash-map entry.
	(dt_simplify::gen): If we have split out a function for the
	transform, generate a call to it.
	(sinfo_hashmap_traits::hash): New function.
	(compare_op): New helper function for ...
	(sinfo_hashmap_traits::equal_keys): ... this new function.
	(decision_tree::gen): Split out common equivalent transforms
	into functions.

From-SVN: r226490

2015-08-03  Richard Biener  <rguenther@suse.de>

	* gimple-fold.c (fold_gimple_assign): Remove folding of
	the comparison in COND_EXPRs.

From-SVN: r226489

gimple-match-head.c (gimple_simplify): For [VEC_]COND_EXPRs on the rhs of assignments first simplify the embedded...

2015-08-03  Richard Biener  <rguenther@suse.de>

	* gimple-match-head.c (gimple_simplify): For [VEC_]COND_EXPRs
	on the rhs of assignments first simplify the embedded
	GENERIC condition.

From-SVN: r226488

2015-08-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66917
	* tree-vectorizer.h (struct dataref_aux): Add base_element_aligned
	field.
	(DR_VECT_AUX): New macro.
	(set_dr_misalignment): Adjust.
	(dr_misalignment): Likewise.
	* tree-vect-data-refs.c (vect_compute_data_ref_alignment):
	Compute whether the base is at least element aligned.
	* tree-vect-stmts.c (ensure_base_align): Adjust.
	(vectorizable_store): If the base is not element aligned
	preserve alignment of the original access if misalignment is unknown.
	(vectorizable_load): Likewise.

From-SVN: r226487

	* MAINTAINERS (loop ivopts): Add the entry and myself.

From-SVN: r226486

From-SVN: r226483

gcc/ChangeLog
2015-07-28  Martin Sebor  <msebor@redhat.com>

    * c-family/c.opt (-Wframe-address): New warning option.
    * doc/invoke.texi (Wframe-address): Document it.
    * doc/extend.texi (__builtin_frame_address, __builtin_return_address):
    Clarify possible effects of calling the functions with non-zero
    arguments and mention -Wframe-address.
    * builtins.c (expand_builtin_frame_address): Handle -Wframe-address.

gcc/testsuite/ChangeLog
2015-07-28  Martin Sebor  <msebor@redhat.com>

    * g++.dg/Wframe-address-in-Wall.C: New test.
    * g++.dg/Wframe-address.C: New test.
    * g++.dg/Wno-frame-address.C: New test.
    * gcc.dg/Wframe-address-in-Wall.c: New test.
    * gcc.dg/Wframe-address.c: New test.
    * gcc.dg/Wno-frame-address.c: New test.

From-SVN: r226480

gcc/c-family/ChangeLog:

	* c-indentation.c (should_warn_for_misleading_indentation):
	Improve heuristics.

gcc/testsuite/ChangeLog:

	* c-c++-common/Wmisleading-indentation.c: Add more tests.

From-SVN: r226479

gcc/c-family/ChangeLog:

	* c-indentation.c (get_visual_column): Add parameter first_nws,
	use it.  Update comment documenting the function.
	(is_first_nonwhitespace_on_line): Remove.
	(should_warn_for_misleading_indentation): Replace usage of
	of is_first_nonwhitespace_on_line with get_visual_column.

From-SVN: r226478

gcc/c-family/ChangeLog:

	* c-indentation.h (struct token_indent_info): Define.
	(get_token_indent_info): Define.
	(warn_for_misleading_information): Declare.
	* c-common.h (warn_for_misleading_information): Remove.
	* c-identation.c (warn_for_misleading_indentation):
	Change declaration to take three token_indent_infos.  Adjust
	accordingly.
	* c-identation.c (should_warn_for_misleading_indentation):
	Likewise.  Bail out early if the body is a compound statement.
	(guard_tinfo_to_string): Define.

gcc/c/ChangeLog:

	* c-parser.c (c_parser_if_body): Take token_indent_info
	argument. Call warn_for_misleading_indentation even when the
	body is a semicolon.  Extract token_indent_infos corresponding
	to the guard, body and next tokens.  Adjust call to
	warn_for_misleading_indentation accordingly.
	(c_parser_else_body): Likewise.
	(c_parser_if_statement): Likewise.
	(c_parser_while_statement): Likewise.
	(c_parser_for_statement): Likewise.

gcc/cp/ChangeLog:

	* parser.c (cp_parser_selection_statement): Move handling of
	semicolon body to ...
	(cp_parser_implicitly_scoped_statement): .. here.  Call
	warn_for_misleading_indentation even when the body is a
	semicolon.  Extract token_indent_infos corresponding to the
	guard, body and next tokens.  Adjust call to
	warn_for_misleading_indentation accordingly.  Take
	token_indent_info argument.
	(cp_parser_already_scoped_statement): Likewise.
	(cp_parser_selection_statement, cp_parser_iteration_statement):
	Extract a token_indent_info corresponding to the guard token.

From-SVN: r226477

2015-08-01  Michael Collison  <michael.collison@linaro.org
	    Ramana Radhakrishnan  <ramana.radhakrishnan@linaro.org>

	* gcc/config/arm/arm.md (*arm_smin_cmp): New pattern.
	(*arm_umin_cmp): Likewise.

	* gcc.target/arm/mincmp.c: New test.

From-SVN: r226476

re PR bootstrap/66521 (xgcc: cc1plus segfaults when compiling libstdc++-v3/src/c++11/ostream-inst.cc)

Fix PR 66521

libvtv/ChangeLog

2015-08-01  Caroline Tice  <cmtice@google.com>

        PR 66521
        * Makefile.am: Update to match latest tree.
        * Makefile.in: Regenerate.
        * testsuite/lib/libvtv: Brought up to date.
        * vtv_malloc.cc (VTV_DEBUG): Update function call to match renamed
        function (old bug!).
        * vtv_rts.cc (debug_functions, debug_init, debug_verify_vtable): Update
        initializations to work correctly with VTV_DEBUG defined.

gcc/ChangeLog:

2015-08-01  Caroline Tice  <cmtice@google.com>

        PR 66521
        * vtable-verify.c (vtbl_mangled_name_types, vtbl_mangled_name_ids): New
        global variables.
        (vtbl_find_mangled_name):  New function.
        (vtbl_register_mangled_name):  New function.
        (vtbl_map_get_node):  If DECL_ASSEMBLER_NAME is "<anon>", look up
        mangled name in mangled name vectors.
        (find_or_create_vtbl_map_node):  Ditto.
        (var_is_used_for_virtual_call_p):  Add recursion_depth parameter;
        update recursion_depth on function entry; pass it to every recursive
        call; automatically exit if depth > 25 (give up looking at that point).
        (verify_bb_vtables):  Initialize recursion_depth and pass it to
        var_is_used_for_virtual_call_p.
        * vtable-verify.h (vtbl_mangbled_name_types, vtbl_mangled_name_ids): New
        global variable decls.
        (vtbl_register_mangled_name): New extern function decl.

gcc/cp/ChangeLog:
2015-08-01  Caroline Tice  <cmtice@google.com>

        PR 66521
        * mangle.c : Add vtable-verify.h to include files.
        (get_mangled_vtable_map_var_name):  If the DECL_ASSEMBLER_NAME
        is "<anon>" get the real mangled name for the class instead, and
        also store the real mangled name in a vector for use later.

From-SVN: r226471

From-SVN: r226468

re PR fortran/67091 ([OOP] Bad result for type-bound procedures returning pointers to the intrinsic function ASSOCIATED)

2015-08-01  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/67091
	* trans-intrinsic.c (gfc_conv_associated): Add the pre and post
	blocks for the second argument to se.

2015-08-01  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/67091
	* gfortran.dg/associated_target_6.f03: New test

From-SVN: r226464

2015-08-01  Tom de Vries  <tom@codesourcery.com>

	* tree.c (operation_can_overflow, operation_no_trapping_overflow): New
	function.
	* tree.h (operation_can_overflow, operation_no_trapping_overflow):
	Declare.
	* tree-vect-loop.c (vect_is_simple_reduction_1): Use
	operation_no_trapping_overflow.  Allow non-overflow operations.
	* graphite-sese-to-poly.c (is_reduction_operation_p): Allow non-overflow
	operations.

	* gcc.dg/autopar/reduc-2char.c (init_arrays): Mark with attribute
	optimize ("-ftree-parallelize-loops=0").
	Add successful scans for 2 detected reductions.	 Add xfail scans for 3
	detected reductions.
	* gcc.dg/autopar/reduc-2short.c: Same.
	* gcc.dg/autopar/reduc-8.c (init_arrays): Mark with attribute
	optimize ("-ftree-parallelize-loops=0").  Add successful scans for 2
	detected reductions.
	* gcc.dg/vect/trapv-vect-reduc-4.c: Update scan to match vectorized min
	and max reductions.

From-SVN: r226463