[PR87815]Don't generate shift sequence for load replacement in DSE when the mode size is not compile-time constant

The patch adds a check if the gap is compile-time constant.

This happens when dse decides to replace the load with previous store value.
The problem is that, shift sequence could not accept compile-time non-constant
mode operand.

gcc/

2018-11-12  Renlin Li  <renlin.li@arm.com>

	PR target/87815
	* dse.c (get_stored_val): Add check for compile-time
	constantness of gap.

gcc/testsuite/

2018-11-12  Renlin Li  <renlin.li@arm.com>

	PR target/87815
	* gcc.target/aarch64/sve/pr87815.c: New.

From-SVN: r266033

	PR libstdc++/87963
	* src/c++17/memory_resource.cc (chunk::_M_bytes): Change type from
	unsigned to uint32_t.
	(chunk): Fix static assertion for 64-bit targets that aren't LP64.
	(bigblock::all_ones): Fix undefined shift.

From-SVN: r266032

This patch adds -march=armv8.5-a to the Arm backend.
Armv8.5-A also adds two new security features:
- Speculation Barrier instruction
- Execution and Data Prediction Restriction Instructions
These are made optional to all older Armv8-A versions. Thus we are adding two
new options "+sb" and "+predres" to all older Armv8-A. These are passed on to
the assembler and have no code generation effects and have already gone in the
trunk of binutils.

*** gcc/ChangeLog ***

2018-11-12  Sudakshina Das  <sudi.das@arm.com>

	* config/arm/arm-cpus.in (armv8_5, sb, predres): New features.
	(ARMv8_5a): New fgroup.
	(armv8.5-a): New arch.
	(armv8-a, armv8.1-a, armv8.2-a, armv8.3-a, armv8.4-a): New options
	sb and predres.
	* config/arm/arm-tables.opt: Regenerate.
	* config/arm/t-aprofile: Add matching rules for -march=armv8.5-a
	* config/arm/t-arm-elf (all_v8_archs): Add armv8.5-a.
	* config/arm/t-multilib (v8_5_a_simd_variants): New variable.
	Add matching rules for -march=armv8.5-a and extensions.
	* doc/invoke.texi (ARM options): Document -march=armv8.5-a.
	Add sb and predres to all armv8-a except armv8.5-a.

*** gcc/testsuite/ChangeLog ***

2018-11-12  Sudakshina Das  <sudi.das@arm.com>

	* gcc.target/arm/multilib.exp: Add some -march=armv8.5-a
	combination tests.

From-SVN: r266031

	* tree-vrp.h (value_range[_base]::set): Make public.  Provide
	overload for single value.
	(value_range[_base]::set_nonnull): New.
	(value_range[_base]::set_null): Likewise.
	(value_range): Document bitmap copying behavior, mark
	copy constructor and assignment operator deleted.
	(value_range::move): New.
	(value_range::set_and_canonicalize): Default bitmap to zero.
	(set_value_range_to_nonnull): Remove.
	(set_value_range_to_null): Likewise.
	(set_value_range): Likewise.
	(set_value_range_to_value): Likewise.
	(extract_range_from_unary_expr): Work on value_range_base.
	(extract_range_from_binary_expr_1): Likewise.  Rename to...
	(extract_range_from_binary_expr): ... this.
	* tree-vrp.c (value_range::update): Clear equiv bitmap
	if required.
	(value_range::move): New, move equiv bitmap.
	(value_range_base::set_undefined): Avoid assignment.
	(value_range::set_undefined): Likewise.
	(value_range_base::set_varying): Likewise.
	(value_range::set_varying): Likewise.
	(set_value_range): Remove.
	(value_range_base::set): New overload for value.
	(value_range::set): Likewise.
	(set_value_range_to_nonnull): Remove.
	(value_range_base::set_nonnull): New.
	(value_range::set_nonnull): Likewise.
	(set_value_range_to_null): Remove.
	(value_range_base::set_null): New.
	(value_range::set_null): Likewise.
	(range_is_null): Work on value_range_base.
	(range_is_nonnull): Likewise.
	(ranges_from_anti_range): Likewise.
	(extract_range_into_wide_ints): Likewise.
	(extract_range_from_multiplicative_op): Likewise.
	(extract_range_from_binary_expr): Likewise.  Update for API changes.
	(extract_range_from_unary_expr): Likewise.  Remove OBJ_TYPE_REF
	handling.
	(value_range::intersect_helper): Avoid copy and assignment.
	(value_range::union_helper): Likewise.
	(determine_value_range_1): Adjust.
	* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::try_find_new_range):
	Avoid assignment by using move.
	(evrp_range_analyzer::record_ranges_from_stmt): Avoid assignment.
	* tree-ssa-threadedge.c (record_temporary_equivalences_from_phis):
	Likewise.
	* tree-ssanames.c (get_range_info): Likewise.
	* vr-values.h (vr_values::get_vr_for_comparison): Adjust API.
	* vr-values.c (vr_values::get_value_range): Adjust.
	(vr_values::update_value_range): Likewise.
	(symbolic_range_based_on_p): Work on value_range_base.
	(vr_values::extract_range_from_binary_expr): Use value_range_base.
	(vr_values::extract_range_from_unary_expr): Likewise.
	(vr_values::extract_range_from_cond_expr): Avoid assignment.
	(vr_values::extract_range_from_comparison): Adjust.
	(vr_values::check_for_binary_op_overflow): Use value_range_base.
	(vr_values::extract_range_basic): Adjust.
	(vr_values::adjust_range_with_scev): Likewise.
	(vr_values::vrp_visit_assignment_or_call): Likewise.
	(vr_values::get_vr_for_comparison): Change API to avoid
	assignment and copy construction.
	(vr_values::compare_name_with_value): Adjust accordingly.
	(vr_values::compare_names): Likewise.
	(vr_values::extract_range_from_phi_node): Avoid assignment and
	bogus in-place modify of equiv bitmap.
	(vr_values::simplify_bit_ops_using_ranges): Use value_range_base.
	* ipa-prop.c (ipa_compute_jump_functions_for_edge): Adjust
	for extract_range_from_unary_expr API change.
	* ipa-cp.c (ipa_vr_operation_and_type_effects): Likewise.

From-SVN: r266030

From-SVN: r266029

2018-11-12  Richard Biener  <rguenther@suse.de>

	* tree-vrp.h (value_range_base::symbolic_p,
	value_range_base::constant_p, value_range_base::zero_p,
	value_range_base::singleton_p): Move from value_range.
	(value_range::dump): Add.
	* gimple-ssa-evrp-analyze.c
	(evrp_range_analyzer::record_ranges_from_phis): Use set_varying.
	* ipa-cp.c (ipcp_vr_lattice::print): Use dump_value_range.
	* tree-ssa-threadedge.c (record_temporary_equivalences_from_phis):
	Use set_varying.
	* tree-vrp.c (value_range::symbolic_p): Move to value_range_base.
	(value_range::constant_p): Likewise.
	(value_range::singleton_p): Likewise.
	(value_range_base::dump): Add.
	(set_value_range_to_undefined): Remove.
	(set_value_range_to_varying): Likewise.
	(range_int_cst_p): Take value_range_base argument.
	(range_int_cst_singleton_p): Likewise.
	(value_range_constant_singleton): Likewise.
	(vrp_set_zero_nonzero_bits): Likewise.
	(extract_range_from_multiplicative_op): Use set_varying.
	(extract_range_from_binary_expr_1): Likewise. Use set_undefined.
	(extract_range_from_unary_expr): Likewise.
	(dump_value_range_base): Change to overload of dump_value_range.
	(vrp_prop::vrp_initialize): Use set_varying and set_undefined.
	(vrp_prop::visit_stmt): Likewise.
	(value_range::intersect_helper): Likewise.
	(value_range::union_helper): Likewise.
	(determine_value_range_1): Likewise.

From-SVN: r266028

2018-11-12  Richard Biener  <rguenther@suse.de>

	* tree-vrp.c (set_value_range_to_nonnull): Clear equiv.
	(set_value_range_to_null): Likewise.
	* vr-values.c (vr_values::extract_range_from_comparison):
	Clear equiv for constant singleton ranges.

From-SVN: r266027

2018-11-12 Wei Xiao <wei3.xiao@intel.com>

        * config/i386/sse.md: Combine VFIXUPIMM* patterns
        (<avx512>_fixupimm<mode>_maskz<round_saeonly_expand_name>): Update.
        (<avx512>_fixupimm<mode><sd_maskz_name><round_saeonly_name>): Update.
        (<avx512>_fixupimm<mode>_mask<round_saeonly_name>): Remove.
        (avx512f_sfixupimm<mode>_maskz<round_saeonly_expand_name>): Update.
        (avx512f_sfixupimm<mode><sd_maskz_name><round_saeonly_name>): Update.
        (avx512f_sfixupimm<mode>_mask<round_saeonly_name>): Remove.

From-SVN: r266026

2018-11-11  Sandra Loosemore  <sandra@codesourcery.com>

	PR c/69502

	gcc/
	* doc/extend.texi (Common Type Attributes): For the align type
	attribute, copy language about decreasing alignment from the
	corresponding variable attribute.

From-SVN: r266025

2018-11-11  Xianmiao Qu  <xianmiao_qu@c-sky.com>

	gcc/
	* config/csky/csky.md (*fpuv2_nmulsf3_1, *fpuv2_nmuldf3_1): Handle
	-frounding-math.

	gcc/testsuite
	* gcc.target/csky/fnmul-1.c: New.
	* gcc.target/csky/fnmul-2.c: New.
	* gcc.target/csky/fnmul-3.c: New.
	* gcc.target/csky/fnmul-4.c: New.

From-SVN: r266024

From-SVN: r266023

2018-11-11  Sandra Loosemore  <sandra@codesourcery.com>

	PR c++/43105

	gcc/
	* doc/invoke.texi (C++ Dialect Options): Add warning about mixing
	-frtti and -fno-rtti code.

From-SVN: r266020

From-SVN: r266019

re PR libstdc++/54005 (Use __atomic_always_lock_free in libstdc++ is_lock_free instead of __atomic_is_lock_free)

	PR libstdc++-v3/54005
	* include/bits/atomic_base.h (__atomic_base<_TTp>::is_lock_free(),
	__atomic_base<_PTp*>::is_lock_free()): Call __atomic_always_lock_free
	with the type-derived _S_alignment instead of __alignof the object.
	* include/std/atomic (atomic<T>::is_lock_free()): Likewise.

From-SVN: r266018

2018-11-11  Sandra Loosemore  <sandra@codesourcery.com>

	PR c/26366

	gcc/
	* doc/extend.texi (Other Builtins): Document probability associated
	with __builtin_expect.

From-SVN: r266017

	PR target/87928
	* config/i386/i386.h (STACK_BOUNDARY): Use TARGET_64BIT_MS_ABI
	instead of (TARGET_64BIT && ix86_abi == MS_ABI).
	* config/i386/darwin.h (STACK_BOUNDARY): Ditto.
	* config/i386/cygming.h (STACK_BOUNDARY): Remove.

testsuite /Changelog:

	PR target/87928
	* gcc.target/i386/pr87928.c: New test.

From-SVN: r266016

2018-11-11  Xianmiao Qu  <xianmiao_qu@c-sky.com>

	* config/csky/csky-linux-elf.h (CC1_SPEC): Support -profile.

From-SVN: r266013

2018-11-11  Xianmiao Qu  <xianmiao_qu@c-sky.com>

	* config/csky/csky.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.

From-SVN: r266012

tree-vrp.h (class value_range_base): New base class for value_range containing all but the m_equiv member.

2018-11-11  Richard Biener  <rguenther@suse.de>

	* tree-vrp.h (class value_range_base): New base class for
	value_range containing all but the m_equiv member.
	(dump_value_range_base): Add.
	(range_includes_zero_p): Work on value_range_base.
	* tree-vrp.c (value_range_base::set): Split out base handling
	from...
	(value_range::set): this.
	(value_range::set_equiv): New.
	(value_range_base::value_range_base): New constructors.
	(value_range_base::check): Split out base handling from...
	(value_range::check): this.
	(value_range::equal_p): Refactor in terms of
	ignore_equivs_equal_p which is now member of the base.
	(value_range_base::set_undefined): New.
	(value_range_base::set_varying): Likewise.
	(value_range_base::dump):Split out base handling from...
	(value_range::dump): this.
	(value_range_base::set_and_canonicalize): Split out base handling
	from...
	(value_range::set_and_canonicalize): this.
	(value_range_base::union_): New.
	* ipa-prop.h (struct ipa_jump_func): Use value_range_base *
	for m_vr.
	* ipa-cp.c (class ipcp_vr_lattice): Use value_range_base
	instead of value_range everywhere.
	(ipcp_vr_lattice::print): Use dump_value_range_base.
	(ipcp_vr_lattice::meet_with): Adjust.
	(ipcp_vr_lattice::meet_with_1): Likewise.
	(ipa_vr_operation_and_type_effects): Likewise.
	(propagate_vr_across_jump_function): Likewise.
	* ipa-prop.c (struct ipa_vr_ggc_hash_traits): Likewise.
	(ipa_get_value_range): Likewise.
	(ipa_set_jfunc_vr): Likewise.
	(ipa_compute_jump_functions_for_edge): Likewise.

From-SVN: r266011

	Implement P0318R1 unwrap_ref_decay and unwrap_reference
	* include/std/type_traits (unwrap_reference, unwrap_reference_t)
	(unwrap_ref_decay, unwrap_ref_decay_t): New traits and aliases.
	* testsuite/20_util/unwrap_reference/1.cc: New test.
	* testsuite/20_util/unwrap_reference/2.cc: New test.

From-SVN: r266010

	Implement P1007R3 std::assume_aligned
	* include/std/memory (assume_aligned): Implement for C++17.
	* testsuite/20_util/assume_aligned/1.cc: New test.
	* testsuite/20_util/assume_aligned/2_neg.cc: New test.
	* testsuite/20_util/assume_aligned/3.cc: New test.

From-SVN: r266009

2018-11-10  Sandra Loosemore  <sandra@codesourcery.com>

	PR middle-end/65703

	gcc/
	* doc/invoke.texi (Optimize Options): Add @opindex entries
	for the positive forms of -fno-xxx and -mno-xxx options
	that were lacking them.

From-SVN: r266008

From-SVN: r266007

This makes make_more_copies do what its documentation says, that is,
only make an intermediate pseudo if copying to a pseudo.

This regressed generated code quality when we didn't keep the original
notes that were on the copy, but since r265582 we do, and only allowing
pseudos now is a win.  It also simplifies the code.


	* combine.c (make_more_copies): Only make an intermediate copy if the
	dest of a move is a pseudo.

From-SVN: r266004

From-SVN: r266001

re PR testsuite/87965 (Test cases c-c++-common/pr60226.c and gcc.dg/pr39323-1.c fail starting with r265977)

gcc/testsuite/ChangeLog:

	PR testsuite/87965
	* c-c++-common/pr60226.c: Adjust text of expected diagnostic.
	* gcc.dg/pr39323-1.c: Ditto.

From-SVN: r265998

ChangeLog:

yyyy-mm-dd  Stafford Horne  <shorne@gmail.com>

	* MAINTAINERS (CPU Port Maintainers): Add myself for or1k.
	(Write After Approval): Remove myself.

From-SVN: r265996

	* gcc.dg/Walloca-16.c: Ignore conflicting types for built-in
	warnings.
	* gcc.dg/Wrestrict-4.c: Ditto.
	* gcc.dg/Wrestrict-5.c: Ditto.
	* gcc.dg/pr83463.c: Ditto.
	* gcc.dg/torture/pr55890-2.c: Ditto.
	* gcc.dg/torture/pr55890-3.c: Ditto.
	* gcc.dg/torture/pr71816.c: Ditto.

From-SVN: r265995

	PR target/87221
	* config/netbsd-elf.h (NETBSD_STARTFILE_SPEC): Use crtbeginS.o for PIE.
	(NETBSD_ENDFILE_SPEC): Use crtendS.o for PIE.

From-SVN: r265994

2018-11-09  Sandra Loosemore  <sandra@codesourcery.com>

	PR driver/41179
	PR middle-end/65703

	gcc/
	* doc/invoke.texi (Optimize Options): Clarify default behavior
	for -fno-toplevel-reorder, -fno-defer-pop, and -fno-branch-count-reg.

From-SVN: r265993

2018-11-09  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR tree-optimization/87940
        * expr.c (string_constant): Don't strip NOPS in subexpressions.
        Fold PLUS_EXPR correctly.

From-SVN: r265992

r265490 allowed the compiler to choose in a more flexible way whether to
use load or load-address-relative-long (LARL) instruction.  When it
chose LARL for literal pool references, the latter ones were rewritten
by pass_s390_early_mach to use UNSPEC_LTREF, which assumes base register
usage, which in turn is not compatible with LARL.  The end result was an
ICE because of unrecognizable insn.

UNSPEC_LTREF and friends are necessary in order to communicate the
dependency on the base register to pass_sched2.  When relative
addressing is used, no base register is necessary, so in such cases the
rewrite must be avoided.

gcc/ChangeLog:

2018-11-09  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/87762
	* config/s390/s390.c (s390_safe_relative_long_p): New function.
	(annotate_constant_pool_refs): Skip insns which support
	relative addressing.
	(annotate_constant_pool_refs_1): New helper function.
	(find_constant_pool_ref): Skip insns which support relative
	addression.
	(find_constant_pool_ref_1): New helper function.
	(replace_constant_pool_ref): Skip insns which support
	relative addressing.
	(replace_constant_pool_ref_1): New helper function.
	(s390_mainpool_start): Adapt to the new signature.
	(s390_mainpool_finish): Likewise.
	(s390_chunkify_start): Likewise.
	(s390_chunkify_finish): Likewise.
	(pass_s390_early_mach::execute): Likewise.
	(s390_prologue_plus_offset): Likewise.
	(s390_emit_prologue): Likewise.
	(s390_emit_epilogue): Likewise.

From-SVN: r265991

c/
	* c-parser.c (c_parser_omp_clause_final): Use
	c_parser_expr_no_commas, convert_lvalue_to_rvalue,
	c_objc_common_truthvalue_conversion, c_fully_fold and parentheses
	parsing instead of c_parser_paren_condition.
	(c_parser_omp_clause_if): Use c_parser_expr_no_commas,
	convert_lvalue_to_rvalue, c_objc_common_truthvalue_conversion and
	c_fully_fold instead of c_parser_condition.
	(c_parser_omp_clause_num_threads, c_parser_omp_clause_num_tasks,
	c_parser_omp_clause_grainsize, c_parser_omp_clause_priority,
	c_parser_omp_clause_hint, c_parser_omp_clause_num_teams,
	c_parser_omp_clause_thread_limit, c_parser_omp_clause_linear): Use
	c_parser_expr_no_commas instead of c_parser_expression.
cp/
	* parser.c (cp_parser_omp_clause_final, cp_parser_omp_clause_if): Use
	cp_parser_assignment_expression instead of cp_parser_condition.
	(cp_parser_omp_clause_num_threads, cp_parser_omp_clause_num_tasks,
	cp_parser_omp_clause_grainsize, cp_parser_omp_clause_priority,
	cp_parser_omp_clause_num_teams, cp_parser_omp_clause_thread_limit,
	cp_parser_omp_clause_linear, cp_parser_omp_clause_device): Use
	cp_parser_assignment_expression instead of cp_parser_expression.
	(cp_parser_omp_clause_hint): Likewise.  Formatting fix.
testsuite/
	* c-c++-common/gomp/clauses-5.c: New test.

From-SVN: r265990

	* c-parser.c (c_parser_omp_clause_reduction): Call sorry_at on
	reduction clause with inscan modifier.

	* parser.c (cp_parser_omp_clause_reduction): Call sorry_at on
	reduction clause with inscan modifier.

From-SVN: r265989

c-parser.c (c_parser_omp_requires): Call sorry_at on requires clauses other than atomic_default_mem_order.

	* c-parser.c (c_parser_omp_requires): Call sorry_at on requires
	clauses other than atomic_default_mem_order.

	* parser.c (cp_parser_omp_requires): Call sorry_at on requires
	clauses other than atomic_default_mem_order.

	* c-c++-common/gomp/requires-1.c: Prune not supported yet messages.
	* c-c++-common/gomp/requires-2.c: Likewise.
	* c-c++-common/gomp/requires-4.c: Likewise.

From-SVN: r265988

gimplify.c (gimplify_scan_omp_clauses): Call sorry_at for valid but unsupported lastprivate with conditional modifier.

	* gimplify.c (gimplify_scan_omp_clauses): Call sorry_at for valid
	but unsupported lastprivate with conditional modifier.

	* c-c++-common/gomp/lastprivate-conditional-1.c: New test.
	* c-c++-common/gomp/lastprivate-conditional-2.c: New test.

From-SVN: r265987

	* config/mips/mips.c (mips_loongson_ext2_prefetch_cookie): Handle
	unused argument better.  Add gcc_unreachable to silence warning.

From-SVN: r265986

	* affinity-fmt.c: Include inttypes.h if HAVE_INTTYPES_H.
	(gomp_display_affinity): Use __builtin_choose_expr to handle
	properly handle argument having integral, or pointer or some other
	type.  If inttypes.h is available and PRIx64 is defined, use PRIx64
	with uint64_t type instead of %llx and unsigned long long.

From-SVN: r265985

	PR libstdc++/87787
	* include/bits/stl_uninitialized.h (__relocate_a_1): Do not call
	memmove when there's nothing to copy (and pointers could be null).

From-SVN: r265984

From-SVN: r265983