[gcc]
2017-12-28  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* builtins.def: (_Float<N> and _Float<N>X BUILT_IN_CEIL): Add
	_Float<N> and _Float<N>X variants for rounding built-in
	functions.
	(_Float<N> and _Float<N>X BUILT_IN_FLOOR): Likewise.
	(_Float<N> and _Float<N>X BUILT_IN_NEARBYINT): Likewise.
	(_Float<N> and _Float<N>X BUILT_IN_RINT): Likewise.
	(_Float<N> and _Float<N>X BUILT_IN_ROUND): Likewise.
	(_Float<N> and _Float<N>X BUILT_IN_TRUNC): Likewise.
	* builtins.c (mathfn_built_in_2): Likewise.
	* internal-fn.def (CEIL): Likewise.
	(FLOOR): Likewise.
	(NEARBYINT): Likewise.
	(RINT): Likewise.
	(ROUND): Likewise.
	(TRUNC): Likewise.
	* convert.c (convert_to_integer_1): Likewise.
	* fold-const.c (tree_call_nonnegative_warnv_p): Likewise.
	(integer_valued_real_call_p): Likewise.
	* fold-const-call.c (fold_const_call_ss): Likewise.
	* gencfn-macros.c (print_case_cfn): Change CFN and operator
	printers to take a const char * suffix instead of a bool.
	(print_define_operator_list): Likewise.
	(fltall_suffixes): New list of suffixes, that include the
	traditional suffixes as well as all of the _Float<N> and
	_Float<N>X suffixes.
	(main): For _Float<N> and _Float<N>X functions, emit both
	<name>_FN and <name>_ALL variants.  The <macro>_FN variant only
	has the _Float<N> and _Float<N>X case names or operators.  The
	<name>_ALL variant has both the traditional and the
	_Float<N>/_Float<N>X case names or operators.
	* match.pd (COPYSIGN optimizations): Provide optimizations for
	_Float<N> and _Float<N>X types where possible.
	(MIN/MAX optimizations): Likewise.
	(sqrt optimizations): Likewise.
	(rounding optimizations): Likewise.

[gcc/c]
2017-12-28  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* c-decl.c (header_for_builtin_fn): Add integer rounding _Float<N>
	and _Float<N>X built-in functions.

From-SVN: r256026

Previously we'd generate a non-canonical zero-extended CONST_INT
instead of a sign-extended one, which tripped the assert for
canonical CONST_INTs after a later patch.

2017-12-28  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* config/powerpcspe/powerpcspe.md (ieee_128bit_negative_zero): Use
	gen_int_mode rather than GEN_INT.
	* config/rs6000/rs6000.md (ieee_128bit_negative_zero): Likewise.

From-SVN: r256024

This patch makes the VEC_SERIES code use valid_for_const_vector_p
instead of CONSTANT_P, to match what we already do for VEC_DUPLICATE.
This showed up as a failure in gcc.c-torture/execute/pr28982b.c for -m32
on x86_64-linux-gnu after later patches.

2017-12-28  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* emit-rtl.c (gen_const_vec_series): Use valid_for_const_vector_p
	instead of CONSTANT_P.
	(gen_vec_series): Likewise.
	* simplify-rtx.c (simplify_binary_operation_1): Likewise.

From-SVN: r256023

2017-12-28  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR Fortran/83548
	* match.c (gfc_match_type_spec): Check for LOGICAL conflict in
	type-spec versus LOGICAL intrinsic subprogram.

2017-12-28  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR Fortran/83548
	* gfortran.dg/array_constructor_type_22.f03: New test.

From-SVN: r256022

This patch does not fix PR 83344, but merely fixes an error where we
used to set a constant character length value from a non-constant
expression, and thus set it to some bogus value.

As a result of this, I have commented out part of the associate_22.f90
test which otherwise generates a warning message.

Regtested on x86_64-pc-linux-gnu.

gcc/fortran/ChangeLog:

2017-12-28  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/83344
	* resolve.c (resolve_assoc_var): Don't set the constant value
	unless the target is a constant expression.

gcc/testsuite/ChangeLog:

2017-12-28  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/83344
	* gfortran.dg/associate_22.f90: Comment out part of test.

From-SVN: r256021

* config/m68k/m68k.md (ashrdi3_const1, lshrdi3_const1): Add
CC_STATUS_INIT.

From-SVN: r256020

re PR fortran/83567 (Parametrized derived types: Segmentation fault when assigning a function return value)

2017-12-28  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/83567
	* trans-expr.c (gfc_trans_assignment_1): Free parameterized
	components of the lhs if dealloc is set.
	*trans-decl.c (gfc_trans_deferred_vars): Do not free the
	parameterized components of function results on leaving scope.


2017-12-28  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/83567
	* gfortran.dg/pdt_26.f90 : New test.

From-SVN: r256019

From-SVN: r256017

	PR libstdc++/83600
	* include/bits/regex.h (match_results::end()): Return valid iterator
	when not ready.
	* testsuite/28_regex/match_results/ctors/char/default.cc: Check that
	unready objects are empty and have equal begin and end iterators.
	* testsuite/28_regex/match_results/ctors/wchar_t/default.cc: Likewise.

From-SVN: r256014

	PR libstdc++/83598
	* include/bits/regex.h (basic_regex): Don't modify flags passed to
	constructors.
	* testsuite/28_regex/basic_regex/ctors/83598.cc: New test.

From-SVN: r256013

	PR libstdc++/83538
	* doc/xml/manual/intro.xml: Document LWG 2306 change.
	* include/bits/regex.h (match_results::reference): Change to
	non-const reference.
	* testsuite/28_regex/match_results/typedefs.cc: Check types are
	correct.

From-SVN: r256012

	PR fortran/83092
	* expr.c (gfc_apply_init): Check that typespec has character type
	before using character length field.

2017_12_27  Louis Krupp  <louis.krupp@zoho.com>

	PR fortran/83092
	* gfortran.dg/init_char_with_nonchar_ctr.f90: New test.

From-SVN: r256011

gcc/ChangeLog:

2017-12-27  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* config/aarch64/aarch64-simd.md (aarch64_ld1x2<VQ:mode>): New.
	(aarch64_ld1x2<VDC:mode>): Likewise.
	(aarch64_simd_ld1<mode>_x2): Likewise.
	(aarch64_simd_ld1<mode>_x2): Likewise.
	* config/aarch64/arm_neon.h (vld1_u8_x2): New.
	(vld1_s8_x2): Likewise.
	(vld1_u16_x2): Likewise.
	(vld1_s16_x2): Likewise.
	(vld1_u32_x2): Likewise.
	(vld1_s32_x2): Likewise.
	(vld1_u64_x2): Likewise.
	(vld1_s64_x2): Likewise.
	(vld1_f16_x2): Likewise.
	(vld1_f32_x2): Likewise.
	(vld1_f64_x2): Likewise.
	(vld1_p8_x2): Likewise.
	(vld1_p16_x2): Likewise.
	(vld1_p64_x2): Likewise.
	(vld1q_u8_x2): Likewise.
	(vld1q_s8_x2): Likewise.
	(vld1q_u16_x2): Likewise.
	(vld1q_s16_x2): Likewise.
	(vld1q_u32_x2): Likewise.
	(vld1q_s32_x2): Likewise.
	(vld1q_u64_x2): Likewise.
	(vld1q_s64_x2): Likewise.
	(vld1q_f16_x2): Likewise.
	(vld1q_f32_x2): Likewise.
	(vld1q_f64_x2): Likewise.
	(vld1q_p8_x2): Likewise.
	(vld1q_p16_x2): Likewise.
	(vld1q_p64_x2): Likewise.

gcc/testsuite/ChangeLog:

2017-12-27  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* gcc.target/aarch64/advsimd-intrinsics/vld1x2.c: New test.

From-SVN: r256010

2017-12-27  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/83552
	* tree-ssa-strlen.c (fold_strstr_to_strncmp): Assign result
	of get_string_lenth to a SSA_NAME if not a GIMPLE value.
2017-12-27  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/83552
	* gcc.dg/pr83552.c: New test.

From-SVN: r256009

2017-12-27  Tom de Vries  <tom@codesourcery.com>

	PR c++/83046
	* testsuite/libgomp.oacc-c-c++-common/gang-static-2.c (test_static)
	(test_nonstatic): Fix return type to workaround PR83046.

From-SVN: r256008

2017-12-27  Tom de Vries  <tom@codesourcery.com>

	* config/nvptx/nvptx.c (nvptx_option_override): Disable
	-gstatement-frontiers.

From-SVN: r256007

From-SVN: r256006

2017-12-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/83540
	* frontend-passes.c (create_var): If an array to be created
	has unknown size and -fno-realloc-lhs is in effect,
	return NULL.

2017-12-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/83540
	* gfortran.dg/inline_matmul_20.f90: New test.

From-SVN: r256003

2017-12-26  Tom de Vries  <tom@codesourcery.com>

	* c-c++-common/unroll-5.c: Use relative line number.

From-SVN: r256002

	PR rtl-optimization/83513
	* sel-sched.c (sel_rank_for_schedule): Order by non-zero usefulness
	before priority comparison.

From-SVN: r256001

From-SVN: r256000

	PR target/83488
	* config/i386/i386.opt (-mavx512vpopcntdq, -mmavx512bitalg): Move from
	ix86_isa_flags2 to ix86_isa_flags.
	* config/i386/i386-c.c (ix86_target_macros_internal): Test
	OPTION_MASK_ISA_AVX512BITALG and OPTION_MASK_ISA_AVX512VPOPCNTDQ in
	isa_flags rather than isa_flags2.
	* config/i386/i386.c (ix86_target_string): Move -mavx512vpopcntdq
	and -mavx512bitalg from isa2_opts to isa_opts.
	(ix86_option_override_internal): Test OPTION_MASK_ISA_AVX512VPOPCNTDQ
	in x_ix86_isa_flags_explicit rather than x_ix86_isa_flags2_explicit
	and set it in x_ix86_isa_flags rather than x_ix86_isa_flags2.
	Formatting fixes.
	(def_builtin): Treat OPTION_MASK_ISA_AVX512BW or
	OPTION_MASK_ISA_AVX512F ored with another option similarly to
	OPTION_MASK_ISA_AVX512VL.  Even for OPTION_MASK_ISA_AVX512VL don't
	clear it if mask is just OPTION_MASK_ISA_AVX512VL itself.
	(ix86_expand_builtin): Don't handle OPTION_MASK_ISA_GFNI and
	OPTION_MASK_ISA_VPCLMULQDQ specially, instead handle
	OPTION_MASK_ISA_AVX512BW and OPTION_MASK_ISA_AVX512F that way.
	* config/i386/i386-builtin.def: Move AVX512VPOPCNTDQ and AVX512BITALG
	builtins from bdesc_args2 to bdesc_args section.
	(__builtin_ia32_compressstoreuqi512_mask,
	__builtin_ia32_compressstoreuhi512_mask,
	__builtin_ia32_compressstoreuqi256_mask,
	__builtin_ia32_expandloadqi512_mask,
	__builtin_ia32_expandloadqi512_maskz,
	__builtin_ia32_expandloadhi512_mask,
	__builtin_ia32_expandloadhi512_maskz,
	__builtin_ia32_compressqi512_mask, __builtin_ia32_compresshi512_mask,
	__builtin_ia32_compressqi256_mask, __builtin_ia32_expandqi512_mask,
	__builtin_ia32_expandqi512_maskz, __builtin_ia32_expandhi512_mask,
	__builtin_ia32_expandhi512_maskz, __builtin_ia32_expandqi256_mask,
	__builtin_ia32_expandqi256_maskz, __builtin_ia32_vpshrd_v32hi_mask,
	__builtin_ia32_vpshld_v32hi_mask, __builtin_ia32_vpshrdv_v32hi_mask,
	__builtin_ia32_vpshrdv_v32hi_maskz, __builtin_ia32_vpshldv_v32hi_mask,
	__builtin_ia32_vpshldv_v32hi_maskz,
	__builtin_ia32_vpopcountb_v64qi_mask,
	__builtin_ia32_vpopcountw_v32hi_mask,
	__builtin_ia32_vpshufbitqmb512_mask,
	__builtin_ia32_vpshufbitqmb256_mask): Add
	" | OPTION_MASK_ISA_AVX512BW".
	(__builtin_ia32_expandloadqi256_mask,
	__builtin_ia32_expandloadqi256_maskz,
	__builtin_ia32_vpopcountb_v32qi_mask): Add
	" | OPTION_MASK_ISA_AVX512VL | OPTION_MASK_ISA_AVX512BW".
	(__builtin_ia32_expandloadhi256_mask,
	__builtin_ia32_expandloadhi256_maskz,
	__builtin_ia32_expandloadqi128_mask,
	__builtin_ia32_expandloadqi128_maskz,
	__builtin_ia32_expandloadhi128_mask,
	__builtin_ia32_expandloadhi128_maskz,
	__builtin_ia32_vpshrd_v16hi, __builtin_ia32_vpshrd_v16hi_mask,
	__builtin_ia32_vpshrd_v8hi, __builtin_ia32_vpshrd_v8hi_mask,
	__builtin_ia32_vpshrd_v8si, __builtin_ia32_vpshrd_v8si_mask,
	__builtin_ia32_vpshrd_v4si, __builtin_ia32_vpshrd_v4si_mask,
	__builtin_ia32_vpshrd_v4di, __builtin_ia32_vpshrd_v4di_mask,
	__builtin_ia32_vpshrd_v2di, __builtin_ia32_vpshrd_v2di_mask,
	__builtin_ia32_vpshld_v16hi, __builtin_ia32_vpshld_v16hi_mask,
	__builtin_ia32_vpshld_v8hi, __builtin_ia32_vpshld_v8hi_mask,
	__builtin_ia32_vpshld_v8si, __builtin_ia32_vpshld_v8si_mask,
	__builtin_ia32_vpshld_v4si, __builtin_ia32_vpshld_v4si_mask,
	__builtin_ia32_vpshld_v4di, __builtin_ia32_vpshld_v4di_mask,
	__builtin_ia32_vpshld_v2di, __builtin_ia32_vpshld_v2di_mask,
	__builtin_ia32_vpshrdv_v16hi, __builtin_ia32_vpshrdv_v16hi_mask,
	__builtin_ia32_vpshrdv_v16hi_maskz, __builtin_ia32_vpshrdv_v8hi,
	__builtin_ia32_vpshrdv_v8hi_mask, __builtin_ia32_vpshrdv_v8hi_maskz,
	__builtin_ia32_vpshrdv_v8si, __builtin_ia32_vpshrdv_v8si_mask,
	__builtin_ia32_vpshrdv_v8si_maskz, __builtin_ia32_vpshrdv_v4si,
	__builtin_ia32_vpshrdv_v4si_mask, __builtin_ia32_vpshrdv_v4si_maskz,
	__builtin_ia32_vpshrdv_v4di, __builtin_ia32_vpshrdv_v4di_mask,
	__builtin_ia32_vpshrdv_v4di_maskz, __builtin_ia32_vpshrdv_v2di,
	__builtin_ia32_vpshrdv_v2di_mask, __builtin_ia32_vpshrdv_v2di_maskz,
	__builtin_ia32_vpshldv_v16hi, __builtin_ia32_vpshldv_v16hi_mask,
	__builtin_ia32_vpshldv_v16hi_maskz, __builtin_ia32_vpshldv_v8hi,
	__builtin_ia32_vpshldv_v8hi_mask, __builtin_ia32_vpshldv_v8hi_maskz,
	__builtin_ia32_vpshldv_v8si, __builtin_ia32_vpshldv_v8si_mask,
	__builtin_ia32_vpshldv_v8si_maskz, __builtin_ia32_vpshldv_v4si,
	__builtin_ia32_vpshldv_v4si_mask, __builtin_ia32_vpshldv_v4si_maskz,
	__builtin_ia32_vpshldv_v4di, __builtin_ia32_vpshldv_v4di_mask,
	__builtin_ia32_vpshldv_v4di_maskz, __builtin_ia32_vpshldv_v2di,
	__builtin_ia32_vpshldv_v2di_mask, __builtin_ia32_vpshldv_v2di_maskz,
	__builtin_ia32_vpopcountb_v32qi, __builtin_ia32_vpopcountb_v16qi,
	__builtin_ia32_vpopcountb_v16qi_mask, __builtin_ia32_vpopcountw_v16hi,
	__builtin_ia32_vpopcountw_v16hi_mask, __builtin_ia32_vpopcountw_v8hi,
	__builtin_ia32_vpopcountw_v8hi_mask): Add
	" | OPTION_MASK_ISA_AVX512VL".
	* config/i386/avx512vbmi2intrin.h (_mm512_shrdi_epi16,
	_mm512_shrdi_epi32, _mm512_mask_shrdi_epi32, _mm512_maskz_shrdi_epi32,
	_mm512_shrdi_epi64, _mm512_mask_shrdi_epi64, _mm512_maskz_shrdi_epi64,
	_mm512_shldi_epi16, _mm512_shldi_epi32, _mm512_mask_shldi_epi32,
	_mm512_maskz_shldi_epi32, _mm512_shldi_epi64, _mm512_mask_shldi_epi64,
	_mm512_maskz_shldi_epi64, _mm512_shrdv_epi16, _mm512_shrdv_epi32,
	_mm512_mask_shrdv_epi32, _mm512_maskz_shrdv_epi32, _mm512_shrdv_epi64,
	_mm512_mask_shrdv_epi64, _mm512_maskz_shrdv_epi64, _mm512_shldv_epi16,
	_mm512_shldv_epi32, _mm512_mask_shldv_epi32, _mm512_maskz_shldv_epi32,
	_mm512_shldv_epi64, _mm512_mask_shldv_epi64,
	_mm512_maskz_shldv_epi64): Don't require avx512bw for these intrinsics.
	* config/i386/avx512bitalgintrin.h (_mm_bitshuffle_epi64_mask,
	_mm_mask_bitshuffle_epi64_mask): Likewise.
	* common/config/i386/i386-common.c
	(OPTION_MASK_ISA_AVX512VPOPCNTDQ_SET,
	OPTION_MASK_ISA_AVX512BITALG_SET): Or in OPTION_MASK_ISA_AVX512F_SET.
	(OPTION_MASK_ISA_AVX512F_UNSET): Or in
	OPTION_MASK_ISA_AVX512VPOPCNTDQ_UNSET and
	OPTION_MASK_ISA_AVX512BITALG_UNSET.
	(OPTION_MASK_ISA2_AVX512F_UNSET,
	OPTION_MASK_ISA2_GENERAL_REGS_ONLY_UNSET): Define.
	(ix86_handle_option): For -mno-general-regs-only, clear from
	ix86_isa_flags2 OPTION_MASK_ISA2_GENERAL_REGS_ONLY_UNSET rather than
	just OPTION_MASK_ISA_MPX.  For -mno-sse{,2,3,4,4.1,4.2,avx,avx2} and
	-mno-ssse3 clear OPTION_MASK_ISA2_AVX512F_UNSET bits from
	ix86_isa_flags2.  For -mno-avx512f likewise, instead of masking
	individually listed ISAs.  For -m{,no-}avx512{vpopcntdq,bitalg} adjust
	for moving from ix86_isa_flags2 to ix86_isa_flags.

From-SVN: r255997

From-SVN: r255996

2017-12-24  Michele Pezzutti <mpezz@tiscali.it>

	PR libstdc++/83237
	* include/bits/random.tcc (poisson_distribution<>::operator()):
	Fix __x = 1 case - see updated Errata of Devroye's treatise.
	* testsuite/26_numerics/random/poisson_distribution/operators/
	values.cc: Add test.
	* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
	line number.

From-SVN: r255993

	PR libstdc++/83450
	* testsuite/21_strings/basic_string/pthread18185.cc: Add return
	statement.

From-SVN: r255992

From-SVN: r255991

	PR c++/83553
	* fold-const.c (struct contains_label_data): New type.
	(contains_label_1): Return non-NULL even for CASE_LABEL_EXPR, unless
	inside of a SWITCH_BODY seen during the walk.
	(contains_label_p): Use walk_tree instead of
	walk_tree_without_duplicates, prepare data for contains_label_1 and
	provide own pset.

	* c-c++-common/torture/pr83553.c: New test.

From-SVN: r255987

From-SVN: r255986

	PR debug/83550
	* c-decl.c (finish_struct): Set DECL_SOURCE_LOCATION on
	TYPE_STUB_DECL and call rest_of_type_compilation before processing
	incomplete vars rather than after it.

	* c-c++-common/dwarf2/pr83550.c: New test.

From-SVN: r255981

	PR debug/83547
	* tree-iterator.c (alloc_stmt_list): Start with cleared
	TREE_SIDE_EFFECTS regardless whether a new STATEMENT_LIST is allocated
	or old one reused.
c/
	* c-typeck.c (c_finish_stmt_expr): Ignore !TREE_SIDE_EFFECTS as
	indicator of ({ }), instead skip all trailing DEBUG_BEGIN_STMTs first,
	and consider empty ones if there are no other stmts.  For
	-Wunused-value walk all statements before the one only followed by
	DEBUG_BEGIN_STMTs.
testsuite/
	* gcc.c-torture/compile/pr83547.c: New test.

From-SVN: r255980

	PR target/83488
	* config/i386/avx512vnniintrin.h: Don't check for __AVX512F__ nor
	enable avx512f explicitly in #pragma GCC target.
	* config/i386/i386-builtin.def (__builtin_ia32_vpdpbusd_v8si,
	__builtin_ia32_vpdpbusd_v8si_mask, __builtin_ia32_vpdpbusd_v8si_maskz,
	__builtin_ia32_vpdpbusd_v4si, __builtin_ia32_vpdpbusd_v4si_mask,
	__builtin_ia32_vpdpbusd_v4si_maskz, __builtin_ia32_vpdpbusds_v8si,
	__builtin_ia32_vpdpbusds_v8si_mask,
	__builtin_ia32_vpdpbusds_v8si_maskz, __builtin_ia32_vpdpbusds_v4si,
	__builtin_ia32_vpdpbusds_v4si_mask,
	__builtin_ia32_vpdpbusds_v4si_maskz, __builtin_ia32_vpdpwssd_v8si,
	__builtin_ia32_vpdpwssd_v8si_mask, __builtin_ia32_vpdpwssd_v8si_maskz,
	__builtin_ia32_vpdpwssd_v4si, __builtin_ia32_vpdpwssd_v4si_mask,
	__builtin_ia32_vpdpwssd_v4si_maskz, __builtin_ia32_vpdpwssds_v8si,
	__builtin_ia32_vpdpwssds_v8si_mask,
	__builtin_ia32_vpdpwssds_v8si_maskz, __builtin_ia32_vpdpwssds_v4si,
	__builtin_ia32_vpdpwssds_v4si_mask,
	__builtin_ia32_vpdpwssds_v4si_maskz): Use
	OPTION_MASK_ISA_AVX512VNNI | OPTION_MASK_ISA_AVX512VL instead of
	just OPTION_MASK_ISA_AVX512VNNI.

	* gcc.target/i386/pr83488-2.c: New test.
	* gcc.target/i386/pr83488-3.c: New test.

From-SVN: r255979

2017-12-22  Martin Jambor  <mjambor@suse.cz>

	PR lto/82027
	* lto-cgraph.c (output_cgraph_opt_summary_p): Also check former
	clones.

testsuite/
	* g++.dg/lto/pr82027_0.C: New test.

From-SVN: r255978

    
    Array_index_expression may be used for indexing/slicing array or
    slice. If a slice element is address taken, the slice itself is
    not necessarily address taken. Only propagate address-taken for
    arrays.
    
    Reviewed-on: https://go-review.googlesource.com/83877

From-SVN: r255977

    
    This CL ports the latest (~Go 1.10) escape analysis code from
    the gc compiler. Changes include:
    
    - In the gc compiler, the variable expression is represented
      with the variable node itself (ONAME). It is the same node
      used in the AST for multiple var expressions for the same
      variable. In our case, the var expressions nodes are distinct
      nodes. We need to propagate the escape state from/to the
      underlying variable in getter and setter. We already do it in
      the setter. Do it in the getter as well.
    
    - At the point of escape analysis, some AST constructs have not
      been lowered to runtime calls, for example, map literal
      construction and some builtin calls. Change the analysis to
      work on the non-lowered AST constructs instead of call
      expressions for them. For this to work, the analysis needs to
      look into Builtin_call_expression. Move its class definition
      from expressions.cc to expressions.h, and add necessary
      accessors. Also fix bugs in other runtime call handlings
      (selectsend, ifaceX2Y2, etc.).
    
    - Handle closures properly. The analysis tracks the function
      reference expression, and the escape state is propagated to
      the underlying heap expression for get_backend to do stack
      allocation for non-escaping closures.
    
    - Fix add_dereference. Before, this was doing expr->deref(),
      which undoes an indirection instead of add one. In the gc
      compiler, it adds a level of indirection, which is modeled as
      an OIND node regardless of the type of the expression. We
      can't do this for non-pointer typed expression, otherwise it
      will result in a type error. Instead, we model it with a
      special flavor of Node, "indirect". The flood phase handles
      this by incrementing its level.
    
    - Slicing of an array was not handled correctly. The gc compiler
      has an implicit (compiler inserted) OADDR node for the array,
      so the analysis is actually performed on the address of the
      array. We don't have this implicit address-of expression in
      the AST. Instead, we model this by adding an implicit child to
      the Node of the Array_index_expression representing slicing of
      an array.
    
    - Array_index_expression may represent indexing or slicing. The
      code distinguishes them by looking at whether the type of the
      expression is a slice. This does not work if the slice element
      is a slice. Instead, check whether its end() is NULL.
    
    - Temporary references was handled only in a limited case, as
      part of address-of expression. This CL handles it in general.
      The analysis uses the Temporary_statement as the point of
      tracking, and forwards Temporary_reference_expression to the
      underlying statement when needed.
    
    - Handle call return value flows, escpecially multiple return
      values. This includes porting part of CL 8202, CL 20102, and
      other fixes.
    
    - Support go:noescape pragma.
    
    - Add special handling for self assignment like
      b.buf = b.buf[m:n]. (CL 3162)
    
    - Remove ESCAPE_SCOPE, which was treated essentially the same as
      ESCAPE_HEAP, and was removed from the gc compiler. (CL 32130)
    
    - Run flood phase until fix point. (CL 30693)
    
    - Unnamed parameters do not escape. (CL 38600)
    
    - Various small bug fixes and improvements.
    
    "make check-go" passes except the one test in math/big, when the
    escape analysis is on. The escape analysis is still not run by
    default.
    
    Reviewed-on: https://go-review.googlesource.com/83876

From-SVN: r255976

gcc/
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512BITALG_SET,
	OPTION_MASK_ISA_AVX512BITALG_UNSET): New.
	(ix86_handle_option): Handle -mavx512bitalg, fix 4VNNIW formatting.
	* config.gcc: Add avx512vpopcntdqvlintrin.h and avx512bitalgintrin.h.
	* config/i386/avx512bitalgintrin.h (_mm512_popcnt_epi8, _mm512_popcnt_epi16,
	_mm512_mask_popcnt_epi8, _mm512_maskz_popcnt_epi8, _mm512_mask_popcnt_epi16,
	_mm512_maskz_popcnt_epi16, _mm512_bitshuffle_epi64_mask, _mm256_popcnt_epi8,
	_mm512_mask_bitshuffle_epi64_mask, _mm256_mask_popcnt_epi8, _mm_popcnt_epi8,
	_mm256_maskz_popcnt_epi8, _mm_bitshuffle_epi64_mask, _mm256_popcnt_epi16,
	_mm_mask_bitshuffle_epi64_mask, _mm256_bitshuffle_epi64_mask,
	_mm256_mask_bitshuffle_epi64_mask, _mm_popcnt_epi16, _mm_maskz_popcnt_epi8,
	_mm256_mask_popcnt_epi16, _mm256_maskz_popcnt_epi16, _mm_mask_popcnt_epi8,
	_mm_mask_popcnt_epi16, _mm_maskz_popcnt_epi16): New intrinsics.
	* config/i386/avx512vpopcntdqvlintrin.h (_mm_popcnt_epi32, _mm_popcnt_epi64,
	_mm_mask_popcnt_epi32, _mm_maskz_popcnt_epi32, _mm256_popcnt_epi32,
	_mm256_mask_popcnt_epi32, _mm256_maskz_popcnt_epi32, _mm_mask_popcnt_epi64,
	_mm_maskz_popcnt_epi64, _mm256_popcnt_epi64, _mm256_mask_popcnt_epi64,
	_mm256_maskz_popcnt_epi64): New intrinsics.
	* config/i386/cpuid.h (bit_AVX512BITALG): New bit.
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect -mavx512bitalg.
	* config/i386/i386-builtin-types.def (V64QI_FTYPE_V64QI, V64QI_FTYPE_V64QI,
	V4DI_FTYPE_V4DI, UHI_FTYPE_V2DI_V2DI_UHI, USI_FTYPE_V4DI_V4DI_USI,
	V4SI_FTYPE_V4SI_V4SI_UHI, V8SI_FTYPE_V8SI_V8SI_UHI): New types.
	* config/i386/i386-builtin.def (__builtin_ia32_vpopcountq_v4di,
	__builtin_ia32_vpopcountq_v4di_mask, __builtin_ia32_vpopcountq_v2di,
	__builtin_ia32_vpopcountq_v2di_mask, __builtin_ia32_vpopcountd_v4si,
	__builtin_ia32_vpopcountd_v4si_mask, __builtin_ia32_vpopcountd_v8si,
	__builtin_ia32_vpopcountd_v8si_mask, __builtin_ia32_vpopcountb_v64qi,
	__builtin_ia32_vpopcountb_v64qi_mask, __builtin_ia32_vpopcountb_v32qi,
	__builtin_ia32_vpopcountb_v32qi_mask, __builtin_ia32_vpopcountb_v16qi,
	__builtin_ia32_vpopcountb_v16qi_mask, __builtin_ia32_vpopcountw_v32hi,
	__builtin_ia32_vpopcountw_v32hi_mask, __builtin_ia32_vpopcountw_v16hi,
	__builtin_ia32_vpopcountw_v16hi_mask, __builtin_ia32_vpopcountw_v8hi,
	__builtin_ia32_vpopcountw_v8hi_mask, __builtin_ia32_vpshufbitqmb128_mask,
	__builtin_ia32_vpshufbitqmb256_mask,
	__builtin_ia32_vpshufbitqmb512_mask): New builtins.
	* config/i386/i386-c.c (__AVX512BITALG__): New.
	* config/i386/i386.c (isa2_opts): Add -mavx512bitalg.
	(ix86_valid_target_attribute_inner_p): Ditto.
	(ix86_expand_args_builtin): Handle new types.
	* config/i386/i386.h (TARGET_AVX512BITALG, TARGET_AVX512BITALG_P): New.
	* config/i386/i386.opt: Add -mavx512bitalg.
	* config/i386/immintrin.h: Add avx512vpopcntdqvlintrin.h and
	avx512bitalgintrin.h.
	* config/i386/sse.md (VI48_AVX512VLBW): New iterator.
	(vpopcount<mode><mask_name>): Add more types.
	(avx512vl_vpshufbitqmb<mode><mask_scalar_merge_name>): New.
	* doc/invoke.texi: Add -mavx512bitalg and -mavx512vpopcntdq.
gcc/testsuite/
	* g++.dg/other/i386-2.C: Add new options.
	* g++.dg/other/i386-3.C: Ditto.
	* gcc.target/i386/sse-12.c: Ditto.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-22.c: Ditto.
	* gcc.target/i386/sse-23.c: Ditto.
	* gcc.target/i386/avx512-check.h: Handle bit_AVX512BITALG.
	* gcc.target/i386/avx512bitalg-vpopcntb-1.c: New.
	* gcc.target/i386/avx512bitalg-vpopcntb.c: Ditto.
	* gcc.target/i386/avx512bitalg-vpopcntbvl.c: Ditto.
	* gcc.target/i386/avx512bitalg-vpopcntw-1.c: Ditto.
	* gcc.target/i386/avx512bitalg-vpopcntw.c: Ditto.
	* gcc.target/i386/avx512bitalg-vpopcntwvl.c: Ditto.
	* gcc.target/i386/avx512bitalg-vpshufbitqmb-1.c: Ditto.
	* gcc.target/i386/avx512bitalg-vpshufbitqmb.c: Ditto.
	* gcc.target/i386/avx512bitalgvl-vpopcntb-1.c: Ditto.
	* gcc.target/i386/avx512bitalgvl-vpopcntw-1.c: Ditto.
	* gcc.target/i386/avx512bitalgvl-vpshufbitqmb-1.c: Ditto.
	* gcc.target/i386/avx512vpopcntdqvl-vpopcntd-1.c: Ditto.
	* gcc.target/i386/avx512vpopcntdqvl-vpopcntq-1.c: Ditto.
	* gcc.target/i386/i386.exp (check_effective_target_avx512bitalg): New.
	* gcc.target/i386/avx512vpopcntdq-vpopcntd-1.c: Add more types.
	* gcc.target/i386/avx512vpopcntdq-vpopcntd.c: Handle new intrinsics.
	* gcc.target/i386/avx512vpopcntdq-vpopcntq-1.c: Ditto.
	* gcc.target/i386/avx512vpopcntdq-vpopcntq.c: Ditto.

Co-Authored-By: Sebastian Peryt <sebastian.peryt@intel.com>

From-SVN: r255975

This is a follow up patch for pr83488 to fix an error in setting
OPTION_MASK_ISA_AVX512VNNI_SET and OPTION_MASK_ISA_AVX512F_SET bits.
There were both set in ix86_isa_flags2 while being defined in
different ISA sets. Additionally move OPTION_MASK_ISA_AVX512VNNI_SET
to ix86_isa_flags as it can be used with OPTION_MASK_ISA_AVX512VL_SET.

gcc/
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512VNNI_SET):
	Or in OPTION_MASK_ISA_AVX512F_SET.
	(OPTION_MASK_ISA_AVX512F_UNSET): Or in
	OPTION_MASK_ISA_AVX512VNNI_UNSET.
	(ix86_handle_option): Adjust for
	OPTION_MASK_ISA_AVX512VNNI_*SET being in ix86_isa_flags.
	* config/i386/i386-builtin.def: Move VNNI builtins from ARGS2
	section to ARGS.
	* config/i386/i386-c.c: Check for OPTION_MASK_ISA_AVX512VNNI in
	isa_flag instead of isa_flag2.
	* config/i386/i386.c (ix86_target_string): Move -mavx512vnni from
	isa_opts2 to isa_opts.
	* config/i386/i386.opt (mavx512vnni): Move from ix86_isa_flags2
	to ix86_isa_flags.

From-SVN: r255974

	* doc/extend.texi (Loop-Specific Pragmas): Document pragma GCC unroll.
c-family/
	* c-pragma.c (init_pragma): Register pragma GCC unroll.
	* c-pragma.h (enum pragma_kind): Add PRAGMA_UNROLL.
c/
	* c-parser.c (c_parser_while_statement): Add unroll parameter and
	build ANNOTATE_EXPR if present.  Add 3rd operand to ANNOTATE_EXPR.
	(c_parser_do_statement): Likewise.
	(c_parser_for_statement): Likewise.
	(c_parser_statement_after_labels): Adjust calls to above.
	(c_parse_pragma_ivdep): New static function.
	(c_parser_pragma_unroll): Likewise.
	(c_parser_pragma) <PRAGMA_IVDEP>: Add support for pragma Unroll.
	<PRAGMA_UNROLL>: New case.
cp/
	* constexpr.c (cxx_eval_constant_expression) <ANNOTATE_EXPR>: Remove
	assertion on 2nd operand.
	(potential_constant_expression_1): Likewise.
	* cp-tree.def (RANGE_FOR_STMT): Take a 5th operand.
	* cp-tree.h (RANGE_FOR_UNROLL): New macro.
	(cp_convert_range_for): Adjust prototype.
	(finish_while_stmt_cond): Likewise.
	(finish_do_stmt): Likewise.
	(finish_for_cond): Likewise.
	* init.c (build_vec_init): Adjut call to finish_for_cond.
	* parser.c (cp_parser_statement): Adjust call to
	cp_parser_iteration_statement.
	(cp_parser_for): Add unroll parameter and pass it in calls to
	cp_parser_range_for and cp_parser_c_for.
	(cp_parser_c_for): Add unroll parameter and pass it in call to
	finish_for_cond.
	(cp_parser_range_for): Add unroll parameter, set in on RANGE_FOR_STMT
	and pass it in call to cp_convert_range_for.
	(cp_convert_range_for): Add unroll parameter and pass it in call to
	finish_for_cond.
	(cp_parser_iteration_statement): Add unroll parameter and pass it in
	calls to finish_while_stmt_cond, finish_do_stmt and cp_parser_for.
	(cp_parser_pragma_ivdep): New static function.
	(cp_parser_pragma_unroll): Likewise.
	(cp_parser_pragma) <PRAGMA_IVDEP>: Add support for pragma Unroll.
	<PRAGMA_UNROLL>: New case.
	* pt.c (tsubst_expr) <FOR_STMT>: Adjust call to finish_for_cond.
	<RANGE_FOR_STMT>: Pass unrolling factor to cp_convert_range_for.
	<WHILE_STMT>: Adjust call to finish_while_stmt_cond.
	<DO_STMT>: Adjust call to finish_do_stmt.
	* semantics.c (finish_while_stmt_cond): Add unroll parameter and
	build ANNOTATE_EXPR if present.
	(finish_do_stmt): Likewise.
	(finish_for_cond): Likewise.
	(begin_range_for_stmt): Build RANGE_FOR_STMT with 5th operand.
fortran/
	* array.c (gfc_copy_iterator): Copy unroll field.
	* decl.c (directive_unroll): New global variable.
	(gfc_match_gcc_unroll): New function.
	* gfortran.h (gfc_iterator]): Add unroll field.
	(directive_unroll): Declare:
	* match.c (gfc_match_do): Use memset to initialize the iterator.
	* match.h (gfc_match_gcc_unroll): New prototype.
	* parse.c (decode_gcc_attribute): Match "unroll".
	(parse_do_block): Set iterator's unroll.
	(parse_executable): Diagnose misplaced unroll directive.
	* trans-stmt.c (gfc_trans_simple_do) Annotate loop condition with
	annot_expr_unroll_kind.
	(gfc_trans_do): Likewise.
	* gfortran.texi (GNU Fortran Compiler Directives): Split section into
	subections 'ATTRIBUTES directive' and 'UNROLL directive'.

From-SVN: r255973

    
    This CL brings escape analysis diagnostics closer to the gc
    compiler's. This makes porting and debugging escape analysis
    code easier. A few changes:
    
    - In the gc compiler, the variable expression is represented
      with the variable node itself (ONAME), the location of which
      is the location of definition. We add a definition_location
      method to Node, and make use of it when the gc compiler emits
      diagnostics at the definition locations.
    
    - In the gc compiler, methods are named T.M or (*T).M. Add the
      type to the method name when possible.
    
    - Print "moved to heap" messages only for variables.
    
    - Reduce some duplicated diagnostics.
    
    - Print "does not escape" messages in more situations which the
      gc compiler does.
    
    - Remove the special handling for closure numbers. In gofrontend,
      closures are named "$nested#" where # is a global counter
      starting from 0, whereas in the gc compiler they are named
      "outer.func#" where # is a per-function counter starting from
      1. We tried to adjust the closure name to better matching the
      ones in the gc compiler, however, it cannot match exactly
      because of the difference of the counter. Instead, just print
      "outer.$nested#".
    
    Reviewed-on: https://go-review.googlesource.com/83875

From-SVN: r255967

for  gcc/c-family/ChangeLog

	PR debug/83527
	PR debug/83419
	* c-semantics.c (only_debug_stmts_after_p): New.
	(pop_stmt_list): Clear side effects in debug-only stmt list.
	Check for single nondebug stmt followed by debug stmts only.

for  gcc/testsuite/ChangeLog

	PR debug/83527
	PR debug/83419
	* gcc.dg/pr83527.c: New.

From-SVN: r255966

From-SVN: r255965