There are 3 instructions for AVX512BF16: VCVTNE2PS2BF16, VCVTNEPS2BF16 and
DPBF16PS instructions, which are Vector Neural Network Instructions
supporting:
    
- VCVTNE2PS2BF16: Convert Two Packed Single Data to One Packed BF16 Data.
- VCVTNEPS2BF16: Convert Packed Single Data to Packed BF16 Data.
- VDPBF16PS: Dot Product of BF16 Pairs Accumulated into Packed Single Precision.

2019-05-07  Wei Xiao  <wei3.xiao@intel.com>

	* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512BF16_SET
	OPTION_MASK_ISA_AVX512BF16_UNSET, OPTION_MASK_ISA2_AVX512BW_UNSET): New.
	(OPTION_MASK_ISA2_AVX512F_UNSET): Add OPTION_MASK_ISA_AVX512BF16_UNSET.
	(ix86_handle_option): Handle -mavx512bf16.
	* config.gcc: Add avx512bf16vlintrin.h and avx512bf16intrin.h
	to extra_headers.
	* config/i386/avx512bf16vlintrin.h: New.
	* config/i386/avx512bf16intrin.h: New.
	* config/i386/cpuid.h (bit_AVX512BF16): New.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect BF16.
	* config/i386/i386-builtin-types.def: Add new types.
	* config/i386/i386-builtin.def: Add new builtins.
	* config/i386/i386-c.c (ix86_target_macros_internal): Define
	__AVX512BF16__.
	* config/i386/i386-option.c (ix86_target_string): Add -mavx512bf16.
	(ix86_option_override_internal): Handle BF16.
	(ix86_valid_target_attribute_inner_p): Ditto.
	* config/i386/i386-expand.c (ix86_expand_args_builtin): Ditto.
	* config/i386/i386-builtin.c (enum processor_features): Add
	F_AVX512BF16.
	(static const _isa_names_table isa_names_table): Ditto.
	* config/i386/i386.h (TARGET_AVX512BF16, TARGET_AVX512BF16_P): New.
	(PTA_AVX512BF16): Ditto.
	* config/i386/i386.opt: Add -mavx512bf16.
	* config/i386/immintrin.h: Include avx512bf16intrin.h
	and avx512bf16vlintrin.h.
	* config/i386/sse.md (avx512f_cvtne2ps2bf16_<mode><mask_name>,
	avx512f_cvtneps2bf16_<mode><mask_name>,
	avx512f_dpbf16ps_<mode><mask_half_name>): New define_insn patterns.
	* config/i386/subst.md (mask_half): Add new subst.
	* doc/invoke.texi: Document -mavx512bf16.

2019-05-07  Wei Xiao  <wei3.xiao@intel.com>

	* gcc.target/i386/avx512bf16-vcvtne2ps2bf16-1.c: New test.
	* gcc.target/i386/avx512bf16-vcvtneps2bf16-1.c: New test.
	* gcc.target/i386/avx512bf16-vdpbf16ps-1.c: New test.
	* gcc.target/i386/avx512bf16vl-vcvtne2ps2bf16-1.c: New test.
	* gcc.target/i386/avx512bf16vl-vcvtneps2bf16-1.c: New test.
	* gcc.target/i386/avx512bf16vl-vdpbf16ps-1.c: New test.
	* gcc.target/i386/builtin_target.c: Handle avx512bf16.
	* gcc.target/i386/sse-12.c: Add -mavx512bf16.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-14.c: Ditto.
	* gcc.target/i386/sse-22.c: Ditto.
	* gcc.target/i386/sse-23.c: Ditto.
	* g++.dg/other/i386-2.C: Ditto.
	* g++.dg/other/i386-3.C: Ditto.

2019-05-07  Hongtao Liu  <hongtao.liu@intel.com>

	* config/i386/cpuinfo.c (get_available_features): Detect BF16.
	* config/i386/cpuinfo.h (enum processor_features): Add
	FEATURE_AVX512BF16.

From-SVN: r271006

    source-gcc/libgomp/testsuite/libgomp.oacc-c-c++-common/pr87835.c: In function 'main':
    source-gcc/libgomp/testsuite/libgomp.oacc-c-c++-common/pr87835.c:45: warning: ignoring #pragma loop gang [-Wunknown-pragmas]
       45 |     #pragma loop gang
          |
    source-gcc/libgomp/testsuite/libgomp.oacc-c-c++-common/pr87835.c:19:7: warning: unused variable 'b' [-Wunused-variable]
       19 |   int b[n];
          |       ^

	libgomp/
	PR target/87835
	* testsuite/libgomp.oacc-c-c++-common/pr87835.c: Update.

From-SVN: r271004

From-SVN: r271003

re PR other/90381 (New test case gcc.dg/tree-ssa/pr88676-2.c fails with its introduction in r270934)

	PR other/90381
	* gcc.dg/tree-ssa/pr88676-2.c: Add 'target le' option to limit the
	test case to run on the little endian machine.

From-SVN: r271002

	PR tree-optimization/90356
	* match.pd ((X +/- 0.0) +/- 0.0): Optimize into X +/- 0.0 if possible.

	* gcc.dg/tree-ssa/pr90356-1.c: New test.
	* gcc.dg/tree-ssa/pr90356-2.c: New test.
	* gcc.dg/tree-ssa/pr90356-3.c: New test.
	* gcc.dg/tree-ssa/pr90356-4.c: New test.

From-SVN: r271001

    
    A direct interface type's value method takes value receiver now.
    Don't pass pointer to the method function.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/175798

From-SVN: r271000

    
    For a direct interface type T with a value method M, its pointer
    type (*T)'s method table includes a stub method of M which takes
    a (*T) as the receiver instead of a T. However, for the "typ"
    field of the method table entry, we added another layer of
    indirection, which makes it appear to take a **T, which is wrong.
    This causes problems when using reflect.Type.Method to get the
    method. This CL fixes the second, incorrect, indirection.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/175837

From-SVN: r270999

From-SVN: r270997

    
    Add a -fgo-debug-optimization option to emit optimization
    diagnostics. This can be used for testing optimizations. Apply
    this to the range clear optimizations of maps and arrays.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/170002

gcc/go:

	* lang.opt (-fgo-debug-optimization): New option.
	* go-c.h (struct go_create_gogo_args): Add debug_optimization
	field.
	* go-lang.c (go_langhook_init): Set debug_optimization field.
	* gccgo.texi (Invoking gccgo): Document -fgo-debug-optimization.

gcc/testsuite:

	* go.dg/arrayclear.go: New test.
	* go.dg/mapclear.go: New test.

From-SVN: r270993

	* be.po, da.po, de.po, el.po, es.po, fi.po, fr.po, hr.po, id.po,
	ja.po, nl.po, ru.po, sr.po, sv.po, tr.po, uk.po, vi.po, zh_CN.po,
	zh_TW.po: Update.

From-SVN: r270991

	* include/experimental/bits/fs_path.h: Improve docs.
	* include/experimental/bits/net.h: Fix wrong header name in comment.
	Do not document implementation details.
	* include/experimental/netfwd: Fix doxygen grouping.

From-SVN: r270990

	* include/bits/stl_pair.h: Improve docs.
	* include/std/tuple: Likewise.

From-SVN: r270989

	* doc/doxygen/doxygroups.cc (std::literals): Add documentation for
	inline namespace.
	* include/std/chrono: Improve docs.
	* include/std/ratio: Do not document implementation details.
	* testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
	line numbers.
	* testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.

From-SVN: r270988

This change ensures that std::common_type<> is a complete type (LWG
2408), and that std::common_type<T>, std::common_type<cv T1, cv T2>, and
std::common_type<T1, T2, R...> will use program-defined specializations
for std::common_type<T1, T2> (LWG 2465).

The implementation of common_type<T1, T2, R...> is changed to use
void_t, and the specializations for duration and time_point are modified
to also use void_t instead of depending on implementation details of
common_type.

	PR libstdc++/89102
	* doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
	* include/std/chrono (__duration_common_type_wrapper): Replace with ...
	(__duration_common_type): New helper.
	(common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
	__duration_common_type.
	(__timepoint_common_type_wrapper): Replace with ...
	(__timepoint_common_type): New helper.
	(common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
	Use __time_point_common_type.
	* include/std/type_traits (common_type<>): Define, as per LWG 2408.
	(__common_type_impl): If either argument is transformed by decay,
	use the common_type of the decayed types.
	(__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
	decayed, use __do_common_type_impl to get the common_type.
	(common_type<_Tp>): Use common_type<_Tp, _Tp>.
	(__do_member_type_wrapper, __member_type_wrapper)
	(__expanded_common_type_wrapper): Remove.
	(__common_type_pack, __common_type_fold): New helpers.
	(common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
	__member_type_wrapper and __expanded_common_type_wrapper.
	* testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
	Test zero-length template argument list.
	* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
	Test single argument cases and argument types that should decay.
	* testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
	Adjust expected error.
	* testsuite/20_util/duration/literals/range_neg.cc: Use zero for
	dg-error lineno.
	* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
	* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
	* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.

From-SVN: r270987

When fixing 90171 it struck me as undesirable to have so many separate
functions that all needed to know about the definition of a usual
deallocation function.  So this patch condenses them into one.  I left
destroying_delete_p because it is used by other files as well.

	* call.c (struct dealloc_info): New.
	(usual_deallocation_fn_p): Take a dealloc_info*.
	(aligned_deallocation_fn_p, sized_deallocation_fn_p): Remove.
	(build_op_delete_call): Adjust.

From-SVN: r270986

	* typeck.c (build_static_cast_1): Use cp_build_addr_expr.

For GCC 9 I fixed this bug with a patch to gimplify_cond_expr, but this
function was also doing the wrong thing.

Using build_address does not push the ADDR_EXPR down into the arms of a
COND_EXPR, which we need for proper handling of conversion of an lvalue ?:
to another reference type.

From-SVN: r270985

	* pt.c (type_dependent_expression_p): A non-type template parm with
	a placeholder type is type-dependent.

From-SVN: r270984

There are a few things left in the rs6000 port that are unused now
that we do not support old reload anymore.  This removes those.


	* config/rs6000/rs6000-protos.h (rs6000_legitimize_reload_address_ptr):
	Delete declaration.
	* config/rs6000/rs6000.c (rs6000_legitimize_reload_address): Delete.
	(rs6000_debug_legitimize_reload_address): Delete.
	(rs6000_legitimize_reload_address_ptr): Delete.
	(rs6000_option_override_internal): Adjust.
	(mem_operand_gpr): Adjust comment.
	(legitimate_lo_sum_address_p): Ditto.
	(rs6000_legitimize_reload_address): Delete.
	(rs6000_debug_legitimize_reload_address): Delete.
	* config/rs6000/rs6000.h (LEGITIMIZE_RELOAD_ADDRESS): Delete.

From-SVN: r270983

gcc/ChangeLog:

2019-05-07  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	PR target/89765
	* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
	In handling of ALTIVEC_BUILTIN_VEC_INSERT, use modular arithmetic
	to compute vector element selector for both constant and variable
	operands.

gcc/testsuite/ChangeLog:

2019-05-07  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	PR target/89765
	* gcc.target/powerpc/pr89765-mc.c: New test.
	* gcc.target/powerpc/vsx-builtin-10c.c: New test.
	* gcc.target/powerpc/vsx-builtin-10d.c: New test.
	* gcc.target/powerpc/vsx-builtin-11c.c: New test.
	* gcc.target/powerpc/vsx-builtin-11d.c: New test.
	* gcc.target/powerpc/vsx-builtin-12c.c: New test.
	* gcc.target/powerpc/vsx-builtin-12d.c: New test.
	* gcc.target/powerpc/vsx-builtin-13c.c: New test.
	* gcc.target/powerpc/vsx-builtin-13d.c: New test.
	* gcc.target/powerpc/vsx-builtin-14c.c: New test.
	* gcc.target/powerpc/vsx-builtin-14d.c: New test.
	* gcc.target/powerpc/vsx-builtin-15c.c: New test.
	* gcc.target/powerpc/vsx-builtin-15d.c: New test.
	* gcc.target/powerpc/vsx-builtin-16c.c: New test.
	* gcc.target/powerpc/vsx-builtin-16d.c: New test.
	* gcc.target/powerpc/vsx-builtin-17c.c: New test.
	* gcc.target/powerpc/vsx-builtin-17d.c: New test.
	* gcc.target/powerpc/vsx-builtin-18c.c: New test.
	* gcc.target/powerpc/vsx-builtin-18d.c: New test.
	* gcc.target/powerpc/vsx-builtin-19c.c: New test.
	* gcc.target/powerpc/vsx-builtin-19d.c: New test.
	* gcc.target/powerpc/vsx-builtin-20c.c: New test.
	* gcc.target/powerpc/vsx-builtin-20d.c: New test.
	* gcc.target/powerpc/vsx-builtin-9c.c: New test.
	* gcc.target/powerpc/vsx-builtin-9d.c: New test.

From-SVN: r270982

	* config/i386/i386.md (cvt_mnemonic): New mode attribute.
	(ashr<mode>3_cvt): Merge insn pattern from ashrsi3_cvt and
	ashrdi3_cvt using SWI48 mode iterator.

From-SVN: r270981

https://gcc.gnu.org/ml/gcc-patches/2019-05/msg00323.html
	* files.c (_cpp_stack_file): Empty filenames aren't dependencies.
	* mkdeps.c (deps_add_dep): Assert not empty.

From-SVN: r270978

	* MAINTAINERS: Remove myself as IA-64 maintainer.

From-SVN: r270977

using SVE.

Given this input code:

int
sum_abs (uint8_t *restrict x, uint8_t *restrict y, int n)
{
  int sum = 0;

  for (int i = 0; i < n; i++)
    {
      sum += __builtin_abs (x[i] - y[i]);
    }

  return sum;
}

The resulting SVE code is:

0000000000000000 <sum_abs>:
   0:	7100005f 	cmp	w2, #0x0
   4:	5400026d 	b.le	50 <sum_abs+0x50>
   8:	d2800003 	mov	x3, #0x0                   	// #0
   c:	93407c42 	sxtw	x2, w2
  10:	2538c002 	mov	z2.b, #0
  14:	25221fe0 	whilelo	p0.b, xzr, x2
  18:	2538c023 	mov	z3.b, #1
  1c:	2518e3e1 	ptrue	p1.b
  20:	a4034000 	ld1b	{z0.b}, p0/z, [x0, x3]
  24:	a4034021 	ld1b	{z1.b}, p0/z, [x1, x3]
  28:	0430e3e3 	incb	x3
  2c:	0520c021 	sel	z1.b, p0, z1.b, z0.b
  30:	25221c60 	whilelo	p0.b, x3, x2
  34:	040d0420 	uabd	z0.b, p1/m, z0.b, z1.b
  38:	44830402 	udot	z2.s, z0.b, z3.b
  3c:	54ffff21 	b.ne	20 <sum_abs+0x20>  // b.any
  40:	2598e3e0 	ptrue	p0.s
  44:	04812042 	uaddv	d2, p0, z2.s
  48:	1e260040 	fmov	w0, s2
  4c:	d65f03c0 	ret
  50:	1e2703e2 	fmov	s2, wzr
  54:	1e260040 	fmov	w0, s2
  58:	d65f03c0 	ret

Notice how udot is used inside a fully masked loop.


gcc/Changelog:

2019-05-07  Alejandro Martinez  <alejandro.martinezvicente@arm.com>

	* config/aarch64/aarch64-sve.md (<su>abd<mode>_3): New define_expand.
	(aarch64_<su>abd<mode>_3): Likewise.
	(*aarch64_<su>abd<mode>_3): New define_insn.
	(<sur>sad<vsi2qi>): New define_expand.
	* config/aarch64/iterators.md: Added MAX_OPP attribute.
	* tree-vect-loop.c (use_mask_by_cond_expr_p): Add SAD_EXPR.
	(build_vect_cond_expr): Likewise.

gcc/testsuite/Changelog:
 
2019-05-07  Alejandro Martinez  <alejandro.martinezvicente@arm.com>

	* gcc.target/aarch64/sve/sad_1.c: New test for sum of absolute
	differences.

From-SVN: r270975

	* cfgexpand.c (asm_clobber_reg_is_valid): Reject
	clobbers outside of accessible_reg_set.
	* config/i386/i386.c (ix86_conditional_register_usage):
	Disable register sets by clearing corresponding bits in
	accessible_reg_set.  Do not set corresponding bits in fixed_regs,
	call_used_regs and don't clear corresponding reg_names array members.

testsuite/ChangeLog:

	* gcc.target/i386/asm-7.c: New test.
	* gcc.target/i386/asm-1.c: Update expected error string.
	* gcc.target/i386/pr62120.c: Ditto.

From-SVN: r270955

	* doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.

From-SVN: r270954

2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>

	Make allocator propagation more consistent for
	operator+(basic_string) (P1165R1)
	* include/bits/basic_string.h
	(operator+(basic_string&&, basic_string&&): Changed resulting
	allocator to always be the one from the first parameter.
	* include/bits/basic_string.tcc
	(operator+(const _CharT*, const basic_string&)): Changed
	resulting allocator to be SOCCC on the second parameter's allocator.
	(operator+(_CharT, const basic_string&)): Likewise.
	* testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
	New.
	* testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
	New.

From-SVN: r270953

	* include/bits/regex.h: Improve docs.
	* include/bits/regex.tcc: Do not document implementation details.

From-SVN: r270952

Copied from 19_diagnostics/error_condition/hash.cc added recently.

	* testsuite/19_diagnostics/error_code/hash.cc: New test.

From-SVN: r270951

	* gcc-interface/Makefile.in (install-gcc-specs): Use foreach.
	Honor DESTDIR.

From-SVN: r270947

tree-vect-stmts.c (vect_is_simple_cond): When vectype is not specified still compute a comp_vectype for invariant compares.

2019-05-07  Richard Biener  <rguenther@suse.de>

	* tree-vect-stmts.c (vect_is_simple_cond): When vectype is
	not specified still compute a comp_vectype for invariant
	compares.

From-SVN: r270945

re PR tree-optimization/90316 (large compile time increase in opt / alias stmt walking for Go example)

2019-05-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/90316
	* tree-ssa-pre.c (translate_vuse_through_block): When
	same_valid is NULL do not bother to search for a virtual
	PHI continuation.
	(phi_translate_1): When operands changed we cannot keep
	the same value-number so do not bother to ask whether
	that's possible from translate_vuse_through_block.

From-SVN: r270944

https://gcc.gnu.org/ml/gcc-patches/2019-05/msg00293.html
	* include/mkdeps.h (deps_write): Add PHONY arg.
	(deps_phony_targets): Delete.
	* init.c (cpp_finish): Just call deps_write.
	* mkdeps.c (struct mkdeps): Add local vector class.  Reimplement
	vector handling.
	(munge): Munge to static buffer.
	(apply_vpath): Adjust vector handling.
	(deps_init, deps_free): Use new, delete.
	(deps_add_target): Do not munge here.  Record quoting low water mark.
	(deps_add_dep): Do not munge here.
	(deps_add_vpath): Adjust vector handling.
	(make_write_name): New.  Munge on demand here.
	(make_write_vec): New.
	(deps_phony_targets): Delete.
	(make_write): New.
	(deps_write): Forward to deps_Write.
	(deps_save, deps_restore): Adjust vector handling.

From-SVN: r270943

2019-05-07  Martin Liska  <mliska@suse.cz>

	* bitmap.c (bitmap_register): Come up with
	alloc_descriptor_max_uid and assign it for
	a new bitmap.
	(register_overhead): Use get_descriptor as
	a descriptor.
	(release_overhead): New.
	(bitmap_elem_to_freelist): Call it.
	(bitmap_elt_clear_from): Likewise.
	(bitmap_obstack_free): Likewise.
	(bitmap_move): Sensitively release memory.
	* bitmap.h (struct GTY): Add alloc_descriptor and padding.
	(bitmap_initialize): Initialize alloc_descriptor to zero.
	* tree-ssa-pre.c (do_hoist_insertion): Use bitmap_move.

From-SVN: r270942

2019-05-07  Richard Biener  <rguenther@suse.de>

	* tree-vect-slp.c (vect_build_slp_tree_2): Bump size whenever
	we build a SLP node.  Remove max_size and limiting.
	(vect_analyze_slp_instance): Record and dump size of the SLP graph.

From-SVN: r270941

re PR tree-optimization/90316 (large compile time increase in opt / alias stmt walking for Go example)

2019-05-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/90316
	* tree-ssa-alias.h (get_continuation_for_phi): Take walking
	limit by reference.
	(walk_non_aliased_vuses): Take walking limit argument.
	* tree-ssa-alias.c (maybe_skip_until): Take limit and abort
	walking if it is reached instead of just counting.
	(get_continuation_for_phi): Likewise.
	(walk_non_aliased_vuses): Likewise, instead of leaving counter
	limiting to the callback.
	* tree-ssa-sccvn.c (vn_reference_lookup_2): Adjust.
	(vn_reference_lookup_3): Likewise.
	(vn_reference_lookup_pieces): Likewise.
	(vn_reference_lookup): Likewise.
	* tree-ssa-pre.c (translate_vuse_through_block): Limit walking.
	* tree-ssa-scopedtables.c (vuse_eq): Adjust.
	(avail_exprs_stack::lookup_avail_expr): Likewise.

From-SVN: r270940

	* m4/druntime/os.m4 (DRUNTIME_OS_LINK_SPEC): Only use -z
	relax=transtls if linker supports it.
	* configure.ac (enable_libphobos, LIBPHOBOS_SUPPORTED): Move down.
	(x86_64-*-solaris2.* | i?86-*-solaris2.*): Only
	mark supported with either gld or ld -z relax=transtls.
	* configure: Regenerate.

From-SVN: r270939

tree-ssa-alias.c (aliasing_component_refs_p): Continue looking for comparaible types in the second direction even if...

	* tree-ssa-alias.c (aliasing_component_refs_p): Continue looking
	for comparaible types in the second direction even if first one
	hits incomparable type.

From-SVN: r270938

2019-05-07  Richard Biener  <rguenther@suse.de>

	PR lto/90369
	* lto-wrapper.c (debug_objcopy): Use the original filename
	including archive offset for the filename used for -save-temps.

From-SVN: r270937

	* lto-common.c (lto_file_read): Print section->start as int64_t,
	section->len as uint64_t.
	* lto-dump.c (symbol_entry::dump): Print sz as uint64_t.

From-SVN: r270935

GCC revision 267634 implemented two_value_replacement function.
However, a typo occurred during the parameter check, which caused
us to miss some optimizations.

The intent of the code might be to check that the input parameters
are const int and their difference is one.  However, when I read
the code, I found that it is wrong to detect whether an input data
plus one is equal to itself.  This could be a typo.

2019-05-07  Li Jia He  <helijia@linux.ibm.com>

	* tree-ssa-phiopt.c (two_value_replacement): Fix a typo in parameter
	detection.
	* gcc.dg/tree-ssa/pr37508.c: Add the no-ssa-phiopt option to skip phi
	optimization.
	* gcc.dg/tree-ssa/pr88676-2.c: New testcase.

From-SVN: r270934