Add warn_unused_result for malloc-like functions (PR tree-optimization/78902).

2019-06-07  Martin Liska  <mliska@suse.cz>

PR tree-optimization/78902
* builtin-attrs.def (ATTR_WARN_UNUSED_RESULT): New.
(ATTR_MALLOC_NOTHROW_LEAF_LIST): Remove.
(ATTR_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST): New.
(ATTR_ALLOC_SIZE_2_NOTHROW_LIST): Remove.
(ATTR_MALLOC_SIZE_1_NOTHROW_LEAF_LIST): Remove.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LIST): New.
(ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LIST): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_SIZE_1_NOTHROW_LEAF_LIST): New.
(ATTR_ALLOCA_SIZE_1_NOTHROW_LEAF_LIST): Remove.
(ATTR_ALLOCA_WARN_UNUSED_RESULT_SIZE_1_NOTHROW_LEAF_LIST): New.
(ATTR_MALLOC_SIZE_1_2_NOTHROW_LEAF_LIST):  Remove.
(ATTR_MALLOC_WARN_UNUSED_RESULT_SIZE_1_2_NOTHROW_LEAF_LIST):
New.
(ATTR_ALLOC_SIZE_2_NOTHROW_LEAF_LIST): Remove.
(ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LEAF_LIST): New.
(ATTR_MALLOC_NOTHROW_NONNULL): Remove.
(ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL): New.
(ATTR_MALLOC_NOTHROW_NONNULL_LEAF): Remove.
(ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF): New.
* builtins.def (BUILT_IN_ALIGNED_ALLOC): Change to use
warn_unused_result attribute.
(BUILT_IN_STRDUP): Likewise.
(BUILT_IN_STRNDUP): Likewise.
(BUILT_IN_ALLOCA): Likewise.
(BUILT_IN_CALLOC): Likewise.
(BUILT_IN_MALLOC): Likewise.
(BUILT_IN_REALLOC): Likewise.
2019-06-07  Martin Liska  <mliska@suse.cz>

PR tree-optimization/78902
* c-c++-common/asan/alloca_loop_unpoisoning.c: Use result
of __builtin_alloca.
* c-c++-common/asan/pr88619.c: Likewise.
* g++.dg/overload/using2.C: Likewise for malloc.
* gcc.dg/attr-alloc_size-5.c: Add new dg-warning.
* gcc.dg/nonnull-3.c: Use result of __builtin_strdup.
* gcc.dg/pr43643.c: Likewise.
* gcc.dg/pr59717.c: Likewise for calloc.
* gcc.dg/torture/pr71816.c: Likewise.
* gcc.dg/tree-ssa/pr78886.c: Likewise.
* gcc.dg/tree-ssa/pr79697.c: Likewise.
* gcc.dg/pr78902.c: New test.

From-SVN: r272028

Daily bump.

From-SVN: r272027

go/internal/gccgoimporter: ignore unexported and imported names

    Due to inlining, we can now see unexported functions and variables,
    and functions and variables imported from different packages.
    Ignore them rather than reporting them from this package.

    Handle $hash and $equal functions consistently, so that we discard the
    inline body if there is one.

    Ignore names created for result parameters for inlining purposes.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/180758

From-SVN: r272023

compiler: permit inlining temporary statements and references

    This increases the number of inlinable functions from 439 to 455.
    An example is math/bits.Mul32, which uses temporaries to handle the
    tuple assignment.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/180837

From-SVN: r272022

RISC-V: Move STARTFILE_PREFIX_SPEC into target OS files.

gcc/
PR target/89955
* config/riscv/riscv.h (STARTFILE_PREFIX_SPEC): Deleted.
* config/riscv/freebsd.h (STARTFILE_PREFIX_SPEC): Added.
* config/riscv/linux.h (STARTFILE_PREFIX_SPEC): Added.

From-SVN: r272021

* sv.po: Update.

From-SVN: r272019

Darwin, c++, testsuite - adjust alignas4.C for Darwin's asm syntax.

Darwin produces aligned zerofill directives for the objects represented.
We can scan for these using "lp64" and "ilp32" to catch operation on both
X86 and PowerPC ports (the test is for the alignment which is the trailing
value in the zerofill directive, as a power of two).

gcc/testsuite/ChangeLog:

2019-06-06  Iain Sandoe  <iain@sandoe.co.uk>

* g++.dg/cpp0x/alignas4.C: Amend test to check for zerofill syntax
on Darwin.

From-SVN: r272018

Darwin, PowerPC, libgcc - Ensure unwinder is built with altivec enabled.

When libgcc is built on Darwin, it is usually built for the earliest potential
target (Darwin8, 10.4).  Build for that revision default to assuming that the
processor might be G3 (without vector ops) and there is an outlined function
used for save/restore that checks whether the processor is G3 or G4+ at run-
time.  However, the unwinder itself needs to be built with the assumption of
vector usage so that the relevant outlined functions are called.

2019-06-06  Iain Sandoe  <iain@sandoe.co.uk>

* config/rs6000/t-darwin: Ensure that the unwinder is built with
altivec enabled.

From-SVN: r272017

tree-ssa-strlen.c (adjust_related_strinfos): Avoid trailing article.

gcc/ChangeLog:

* tree-ssa-strlen.c (adjust_related_strinfos): Avoid trailing article.
(handle_builtin_malloc): Remove trailing spaces.
(handle_builtin_memset): Same.
(handle_builtin_memcmp): Same.
(compute_string_length): Same.
(determine_min_objsize): Same.
(handle_builtin_string_cmp): Same.
(handle_char_store): Same.  Break up excessively long line.

From-SVN: r272016

Drop alignment check in build_reconstructed_reference

2019-06-06  Martin Jambor  <mjambor@suse.cz>

* tree-sra.c (build_reconstructed_reference): Drop the alignment
check.

From-SVN: r272013

Make SRA re-construct orginal memory accesses when easy

2019-06-06  Martin Jambor  <mjambor@suse.cz>

* tree-sra.c (struct access): New field grp_same_access_path.
(dump_access): Dump it.
(build_reconstructed_reference): New function.
(build_ref_for_model): Use it if possible.
(path_comparable_for_same_access): New function.
(same_access_path_p): Likewise.
(sort_and_splice_var_accesses): Set the new flag.
(analyze_access_subtree): Likewise.
(propagate_subaccesses_across_link): Propagate zero value of the new
flag down the access tree.

testsuite/
* gcc.dg/tree-ssa/alias-access-path-1.c: Remove -fno-tree-sra option.
* gcc.dg/tree-ssa/ssa-dse-26.c: Disable FRE.
* testsuite/gnat.dg/opt39.adb: Adjust scan dump.

From-SVN: r272012

Avoid unnecessary inclusion of <stdexcept> header

This can greatly reduce the amount of preprocessed code that is included
by other headers, because <stdexcept> depends on <string> which is huge.

* include/std/array: Do not include <stdexcept>.
* include/std/optional: Include <exception> and
<bits/exception_defines.h> instead of <stdexcept>.
* testsuite/20_util/function_objects/searchers.cc: Include <cctype>
for std::isalnum.
* testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
std::allocator.
* testsuite/23_containers/map/erasure.cc: Include <string>.
* testsuite/23_containers/unordered_map/erasure.cc: Likewise.

From-SVN: r272011

Fix more failing tests for C++98 mode

* testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
dg-prune-output for different C++98 diagnostic.
* testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
Likewise.
* testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
Likewise.
* testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
Likewise.
* testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
Likewise.
* testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
Likewise.
* testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
Likewise.
* testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
Likewise.
* testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
Likewise.
* testsuite/23_containers/vector/requirements/dr438/
constructor_1_neg.cc: Likewise.
* testsuite/23_containers/vector/requirements/dr438/
constructor_2_neg.cc: Likewise.
* testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
Likewise.
* testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.

From-SVN: r272010

Fix more tests that fail in C++2a mode

* testsuite/23_containers/unordered_map/requirements/debug_container.cc:
Do not test allocator rebinding extension for C++2a.
* testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
dg-do directive for C++17 and C++2a.

From-SVN: r272009

Add -march=gfx906 for AMD GCN.

2019-06-06  Andrew Stubbs  <ams@codesourcery.com>

gcc/
* config.gcc (amdgcn-*-*): Allow --with-arch=gfx906.
* config/gcn/gcn.opt (gpu_type): Add gfx906.
* config/gcn/t-gcn-hsa (MULTILIB_OPTIONS): Add gfx906 multilib.
(MULTILIB_DIRNAMES): Rename gcn5 to gfx900.
Add gfx906.

From-SVN: r272007

[AArch64] PR tree-optimization/90332: Implement vec_init<M><N> where N is a vector mode

This patch fixes the failing gcc.dg/vect/slp-reduc-sad-2.c testcase on aarch64
by implementing a vec_init optab that can handle two half-width vectors producing a full-width one
by concatenating them.

In the gcc.dg/vect/slp-reduc-sad-2.c case it's a V8QI reg concatenated with a V8QI const_vector of zeroes.
This can be implemented efficiently using the aarch64_combinez pattern that just loads a D-register to make
use of the implicit zero-extending semantics of that load.
Otherwise it concatenates the two vector using aarch64_simd_combine.

With this patch I'm seeing the effect from richi's original patch that added gcc.dg/vect/slp-reduc-sad-2.c on aarch64
and 525.x264_r improves by about 1.5%.

PR tree-optimization/90332
* config/aarch64/aarch64.c (aarch64_expand_vector_init):
Handle VALS containing two vectors.
* config/aarch64/aarch64-simd.md (*aarch64_combinez<mode>): Rename
to...
(@aarch64_combinez<mode>): ... This.
(*aarch64_combinez_be<mode>): Rename to...
(@aarch64_combinez_be<mode>): ... This.
(vec_init<mode><Vhalf>): New define_expand.
* config/aarch64/iterators.md (Vhalf): Handle V8HF.

From-SVN: r272002

Fix tests that fail in C++2a mode

The GNU extension that allows using the wrong allocator type with a
container is disabled for C++2a mode, because the standard now requires
a diagnostic. Fix the tests that fail when -std=gnu++2a is used.

Also remove some reundant tests that are duplicates of another test
except for a target specifier of c++11. Those tests previously set
-std=gnu++11 explicitly but that was replaced globally with a target
specifier. These tests existed to verify that explicit instantiation
worked for both C++98 and C++11 modes, but now do nothing because both
copies of the test use -std=gnu++14 by default. Instead of duplicating
the test we should be regularly running the whole testsuite with
different -std options.

* testsuite/23_containers/deque/requirements/explicit_instantiation/
1_c++0x.cc: Remove redundant test.
* testsuite/23_containers/deque/requirements/explicit_instantiation/
2.cc: Use target selector instead of preprocessor condition.
* testsuite/23_containers/deque/requirements/explicit_instantiation/
3.cc: Do not run test for C++2a.
* testsuite/23_containers/forward_list/requirements/
explicit_instantiation/3.cc: Likewise.
* testsuite/23_containers/forward_list/requirements/
explicit_instantiation/5.cc: Do not test allocator rebinding extension
for C++2a.
* testsuite/23_containers/list/requirements/explicit_instantiation/
1_c++0x.cc: Remove redundant test.
* testsuite/23_containers/list/requirements/explicit_instantiation/
2.cc: Use target selector instead of preprocessor condition.
* testsuite/23_containers/list/requirements/explicit_instantiation/
3.cc: Do not run test for C++2a.
* testsuite/23_containers/list/requirements/explicit_instantiation/
5.cc: Do not test allocator rebinding extension for C++2a.
* testsuite/23_containers/map/requirements/explicit_instantiation/
1_c++0x.cc: Remove redundant test.
* testsuite/23_containers/map/requirements/explicit_instantiation/
2.cc: Adjust comment.
* testsuite/23_containers/map/requirements/explicit_instantiation/
3.cc: Do not run test for C++2a.
* testsuite/23_containers/map/requirements/explicit_instantiation/
5.cc: Do not test allocator rebinding extension for C++2a.
* testsuite/23_containers/multimap/requirements/explicit_instantiation/
1_c++0x.cc: Remove redundant test.
* testsuite/23_containers/multimap/requirements/explicit_instantiation/
3.cc: Do not run test for C++2a.
* testsuite/23_containers/multimap/requirements/explicit_instantiation/
5.cc: Do not test allocator rebinding extension for C++2a.
* testsuite/23_containers/multiset/requirements/explicit_instantiation/
3.cc: Do not run test for C++2a.
* testsuite/23_containers/multiset/requirements/explicit_instantiation/
5.cc: Do not test allocator rebinding extension for C++2a.
* testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
Do not run test for C++2a.
* testsuite/23_containers/set/requirements/explicit_instantiation/
1_c++0x.cc: Remove redundant test.
* testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
Do not test allocator rebinding extension for C++2a.
* testsuite/23_containers/unordered_map/requirements/
explicit_instantiation/3.cc: Likewise.
* testsuite/23_containers/unordered_map/requirements/
explicit_instantiation/5.cc: Do not test allocator rebinding extension
for C++2a.
* testsuite/23_containers/unordered_multimap/requirements/
explicit_instantiation/3.cc: Do not run test for C++2a.
* testsuite/23_containers/unordered_multimap/requirements/
explicit_instantiation/5.cc: Do not test allocator rebinding extension
for C++2a.
* testsuite/23_containers/unordered_multiset/requirements/
explicit_instantiation/3.cc: Do not run test for C++2a.
* testsuite/23_containers/unordered_multiset/requirements/
explicit_instantiation/5.cc: Do not test allocator rebinding extension
for C++2a.
* testsuite/23_containers/unordered_set/requirements/
explicit_instantiation/3.cc: Do not run test for C++2a.
* testsuite/23_containers/unordered_set/requirements/
explicit_instantiation/5.cc: Do not test allocator rebinding extension
for C++2a.
* testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2.cc: Remove redundant test.
* testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
3.cc: Do not run test for C++2a.
* testsuite/23_containers/vector/requirements/explicit_instantiation/
3.cc: Likewise.

From-SVN: r272001

Remove redundant static assertions in [meta.unary.prop] traits

The type property predicates that are implemented by a compiler builtin
already do the right checks in the compiler. The checks for complete
type or unbounded arrays were wrong for these types anyway.

* include/std/type_traits (is_empty, is_polymorphic, is_final)
(is_abstract, is_aggregate): Remove static_assert.
* testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
from builtin only.
* testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
missing -std=gnu++17 option.
* testsuite/20_util/is_empty/incomplete_neg.cc: New test.
* testsuite/20_util/is_final/incomplete_neg.cc: New test.
* testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
from builtin only.

From-SVN: r272000

Fix tests that fail with -std=gnu++98 or -std=gnu++11

* testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
* testsuite/18_support/set_unexpected.cc: Likewise.
* testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
void.
* testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
function to be valid in C++11.
* testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
* testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
include Library Fundamentals or Networking headers in C++11 mode.
* testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.

From-SVN: r271999

Refactor SFINAE constraints on std::tuple constructors

Replace the _TC class template with the better-named _TupleConstraints
one, which provides a different set of member functions. The new members
do not distinguish construction from lvalues and rvalues, but expects
the caller to do that by providing different template arguments. Within
the std::tuple primary template and std::tuple<T1, T2> partial
specialization the _TupleConstraints members are used via new alias
templates like _ImplicitCtor and _ExplicitCtor which makes the
constructor constraints less verbose and repetitive. For example, where
we previously had:

     template<typename... _UElements, typename
             enable_if<
                _TMC<_UElements...>::template
                   _MoveConstructibleTuple<_UElements...>()
                 && _TMC<_UElements...>::template
                   _ImplicitlyMoveConvertibleTuple<_UElements...>()
                 && (sizeof...(_Elements) >= 1),
       bool>::type=true>
       constexpr tuple(_UElements&&... __elements)

We now have:

     template<typename... _UElements,
             bool _Valid = __valid_args<_UElements...>(),
             _ImplicitCtor<_Valid, _UElements...> = true>
      constexpr
      tuple(_UElements&&... __elements)

There are two semantic changes as a result of the refactoring:

- The allocator-extended default constructor is now constrained.
- The rewritten constraints fix PR 90700.

* include/std/tuple (_TC): Replace with _TupleConstraints.
(_TupleConstraints): New helper for SFINAE constraints, with more
expressive member functions to reduce duplication when used.
(tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
(tuple::_TCC): Replace dummy type parameter with bool non-type
parameter that can be used to check the pack size.
(tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
(tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
checking constraints in constructors.
(tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
New SFINAE helpers.
(tuple::tuple): Use new helpers to reduce repitition in constraints.
(tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
(tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
(tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
(tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
constraints in constructors.
(tuple::__is_alloc_arg()): New SFINAE helpers.
(tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
constraints.
(tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
* testsuite/20_util/tuple/cons/90700.cc: New test.
* testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
to meet new constraint on allocator-extended default constructor.

From-SVN: r271998

MSP430: Use minimal code size library shift functions when optimizing for size

gcc/ChangeLog

2019-06-06  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

* config/msp430/msp430.md (ashlhi3): Use the const_variant of shift
library functions only when not optimizing for size.
(ashlsi3): Likewise.
(ashrhi3): Likewise.
(ashrsi3): Likewise.
(lshrhi3): Likewise.
(lshrsi3): Likewise.

gcc/testsuite/ChangeLog

2019-06-06  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

* gcc.target/msp430/size-optimized-shifts.c: New test.

From-SVN: r271997

re PR rtl-optimization/88751 (Performance regression reload vs lra)

Fix PR88751

This patch implements a small improvement for the heuristic in lra
which decides when it has to activate the simpler register allocation
algorithm.

gcc/ChangeLog:

2019-06-06  Andreas Krebbel  <krebbel@linux.ibm.com>

PR rtl-optimization/88751
* ira.c (ira): Use the number of the actually referenced registers
when calculating the threshold.

From-SVN: r271996

* configure: Regenerate.

From-SVN: r271994

MSP430: Emulate 16-bit shifts with rotate insn when src operand is in memory

gcc/ChangeLog

2019-06-06  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

* config/msp430/msp430.md (ashlhi3): Force shift src operand into a
register if it is in memory, so the shift can be emulated with a rotate
instruction.
(ashrhi3): Likewise.
(lshrhi3): Likewise.

gcc/testsuite/ChangeLog

2019-06-06  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

* gcc.target/msp430/emulate-slli.c: New test.
* gcc.target/msp430/emulate-srai.c: New test.
* gcc.target/msp430/emulate-srli.c: New test.

From-SVN: r271993

MSP430: Put libgcc shift functions in their own section

2019-06-06  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

* config/msp430/slli.S (__mspabi_slli_n): Put function in its own
section.
(__mspabi_slli): Likewise.
(__mspabi_slll_n): Likewise.
(__mspabi_slll): Likewise.
* config/msp430/srai.S (__mspabi_srai_n): Likewise.
(__mspabi_srai): Likewise.
(__mspabi_sral_n): Likewise.
(__mspabi_sral): Likewise.
* config/msp430/srli.S (__mspabi_srli_n): Likewise.
(__mspabi_srli): Likewise.
(__mspabi_srll_n): Likewise.
(__mspabi_srll): Likewise.

From-SVN: r271992

Simplify mult where both arguments are 0 or 1 (PR tree-optimization/87954).

2019-06-06  Martin Liska  <mliska@suse.cz>

PR tree-optimization/87954
* match.pd: Simplify mult where both arguments are 0 or 1.
2019-06-06  Martin Liska  <mliska@suse.cz>

PR tree-optimization/87954
* gcc.dg/pr87954.c: New test.

From-SVN: r271991

vr-values.c (vr_values::extract_range_from_ssa_name): Do not put equivalences on UNDEFINED ranges.

2019-06-06  Richard Biener  <rguenther@suse.de>

* vr-values.c (vr_values::extract_range_from_ssa_name): Do not
put equivalences on UNDEFINED ranges.
* gimple-ssa-evrp.c (evrp_dom_walker::before_dom_children):
Make sure to drop defs of stmts added during simplification
to VARYING.

From-SVN: r271990

tree-ssa-structalias.c: Include tree-cfg.h.

2019-06-06  Richard Biener  <rguenther@suse.de>

* tree-ssa-structalias.c: Include tree-cfg.h.
(make_heapvar): Do not make heap vars artificial.
(find_func_aliases_for_builtin_call): Handle stack allocation
functions.
(find_func_aliases): Delay processing of simple enough returns
in non-IPA mode.
(set_uids_in_ptset): Adjust.
(find_what_var_points_to): Likewise.
(solve_constraints): Do not dump points-to sets here.
(compute_points_to_sets): Post-process return statements,
amending the escaped solution.  Dump points-to sets afterwards.
(ipa_pta_execute): Dump points-to sets.

* gcc.dg/tree-ssa/alias-37.c: New testcase.
* gcc.dg/torture/20190604-1.c: Likewise.
* gcc.dg/tree-ssa/pta-callused.c: Adjust.

From-SVN: r271989

Fix HTML headers and titles for 'Installing GCC' pages (PR web/87933).

2019-06-06  Martin Liska  <mliska@suse.cz>

PR web/87933
* doc/install.texi: Fix HTML headers and
titles for 'Installing GCC' pages.

From-SVN: r271988

IPA ICF: enhance dump output

2019-06-06  Martin Liska  <mliska@suse.cz>

* ipa-icf-gimple.h (dump_message_1): Remove.
(dump_message): Likewise.
(return_false_with_message_1): Print also file.
(return_false_with_msg): Likewise.
(return_with_result): Likewise.
(return_with_debug): Likewise.
* ipa-icf.c (sem_function::equals_private): Remove call
to dump_message.

From-SVN: r271987

[ARC] Update tmac tests.

Fix order of dg-directives such that tests are executed only when
there is no command line cpu option given.

gcc/testsuite/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/tmac-1.c: Reoreder dg-directives.
* gcc.target/arc/tmac-2.c: Likewise.

From-SVN: r271986

PR c/90737 - [8/9/10 Regression] inconsistent address of a local converted to intptr_t between callee and caller

gcc/c/ChangeLog:

PR c/90737
* c-typeck.c (c_finish_return): Only consider functions returning
pointers as candidates for -Wreturn-local-addr.

gcc/cp/ChangeLog:

PR c/90737
* typeck.c (maybe_warn_about_returning_address_of_local): Only
consider functions returning pointers as candidates for
-Wreturn-local-addr.

gcc/testsuite/ChangeLog:

PR c/90737
* c-c++-common/Wreturn-local-addr.c: New test.
* g++.dg/warn/Wreturn-local-addr-6.C: New test.

From-SVN: r271985

sse.md (define_mode_suffix vecmemsuffix): New.

gcc/
2019-06-05  Hongtao Liu  <hongtao.liu@intel.com>

* config/i386/sse.md (define_mode_suffix vecmemsuffix): New.
(define_insn "avx512dq_fpclass<mode><mask_scalar_merge_name>"): Enable
memory operand for it.
(define_insn "avx512dq_vmfpclass<mode><mask_scalar_merge_name>"): Ditto.

gcc/testsuite
2019-06-05  Hongtao Liu  <hongtao.liu@intel.com>

* gcc.target/i386/avx512dq-vfpclasspd-1.c: Adjust scan assember
for {x,y,z} suffix.
* gcc.target/i386/avx512dq-vfpclassps-1.c: Ditto.

From-SVN: r271984

compiler: make use of specialized fast map routines

    In the runtime there are specialized fast map routines for
    certain kep types. This CL lets the compiler make use of these
    functions, instead of always using the generic ones.

    As we now generate multiple versions of map delete calls, to make
    things easier we delay the expansion of the built-in delete
    function to flatten phase.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/180858

From-SVN: r271983

Daily bump.

From-SVN: r271982

config.host (rx-*-linux*): Add t-fdpbit to tmake_file Add appropriate tm_file clause as well.

        * config.host (rx-*-linux*): Add t-fdpbit to tmake_file
        Add appropriate tm_file clause as well.
        * config/rx/t-rx (HOST_LIBGCC2_CFLAGS): Remove.

From-SVN: r271978

crtbegin.S (__dso_handle): Put in .sdata/.sbss rather than .data/.bss so it can be accessed via...

* config/ia64/crtbegin.S (__dso_handle): Put in .sdata/.sbss
rather than .data/.bss so it can be accessed via gp-relative
addressing.

From-SVN: r271977

compiler: inline call expressions and function references

    Scan inlinable methods for references to global variables and
    functions (forgot to do that earlier).

    Track all packages mentioned by exports (that should have been done
    earlier too).

    Record assembler name in export data, so that we can inline calls to
    non-Go functions.  Modify gccgoimporter code to skip assembler name.

    This increases the number of inlinable functions in the standard
    library from 215 to 439.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/180677

From-SVN: r271976

gcc_diag-11.c: Skip until -Wformat-diag has been committed.

gcc/testsuite/ChangeLog:

* gcc.dg/format/gcc_diag-11.c: Skip until -Wformat-diag has
been committed.

From-SVN: r271975

decl.c (smallest_type_location): New.

/cp
2019-06-05  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (smallest_type_location): New.
(check_special_function_return_type): Use it.
(grokdeclarator): Lkewise.

/testsuite
2019-06-05  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/diagnostic/return-type-invalid-1.C: New.
* g++.old-deja/g++.brendan/crash16.C: Adjust.
* g++.old-deja/g++.law/ctors5.C: Likewise.

/cp
2019-06-05  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (grokdeclarator): Use locations[ds_friend]
in one place.

/testsuite
2019-06-05  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/other/friend4.C: Test locations too.
* g++.dg/other/friend5.C: Likewise.
* g++.dg/other/friend7.C: Likewise.

From-SVN: r271974

c-decl.c (start_decl): Adjust quoting and hyphenation in diagnostics.

gcc/c/ChangeLog:

* c-decl.c (start_decl): Adjust quoting and hyphenation
in diagnostics.
(finish_decl): Same.
(finish_enum): Same.
(start_function): Same.
(declspecs_add_type): Same.
* c-parser.c (warn_for_abs): Same.
* c-typeck.c (build_binary_op): Same.

gcc/c-family/ChangeLog:

* c-attribs.c (handle_mode_attribute): Adjust quoting and hyphenation.
(handle_alias_ifunc_attribute): Same.
(handle_copy_attribute): Same.
(handle_weakref_attribute): Same.
(handle_nonnull_attribute): Same.
* c-warn.c (warn_for_sign_compare): Same.
(warn_for_restrict): Same.
* c.opt: Same.

gcc/cp/ChangeLog:

* call.c (build_conditional_expr_1): Adjust quoting and hyphenation.
(convert_like_real): Same.
(convert_arg_to_ellipsis): Same.
* constexpr.c (diag_array_subscript): Same.
* constraint.cc (diagnose_trait_expression): Same.
* cvt.c (ocp_convert): Same.
* decl.c (start_decl): Same.
(check_for_uninitialized_const_var): Same.
(grokfndecl): Same.
(check_special_function_return_type): Same.
(finish_enum_value_list): Same.
(start_preparsed_function): Same.
* parser.c (cp_parser_decl_specifier_seq): Same.
* typeck.c (cp_build_binary_op): Same.
(build_static_cast_1): Same.

gcc/lto/ChangeLog:

* lto-common.c (lto_file_finalize): Adjust quoting and hyphenation.

gcc/objc/ChangeLog:

* objc-act.c (objc_build_setter_call): Adjust quoting and hyphenation.
* objc-encoding.c (encode_gnu_bitfield): Same.

gcc/ChangeLog:

* config/i386/i386-features.c (ix86_get_function_versions_dispatcher):
Adjust quoting and hyphenation.
* convert.c (convert_to_real_1): Same.
* gcc.c (driver_wrong_lang_callback): Same.
(driver::handle_unrecognized_options): Same.
* gimple-ssa-nonnull-compare.c (do_warn_nonnull_compare): Same.
* opts-common.c (cmdline_handle_error): Same.
(read_cmdline_option): Same.
* opts-global.c (complain_wrong_lang): Same.
(print_ignored_options): Same.
(handle_common_deferred_options): Same.
* pretty-print.h: Same.
* print-rtl.c (debug_bb_n_slim): Same.
* sched-rgn.c (make_pass_sched_fusion): Same.
* tree-cfg.c (verify_gimple_assign_unary): Same.
(verify_gimple_label): Same.
* tree-ssa-operands.c (verify_ssa_operands): Same.
* varasm.c (do_assemble_alias): Same.
(assemble_alias): Same.

From-SVN: r271971

alpha.c (direct_return): Move down after struct machine_function definition...

* config/alpha/alpha.c (direct_return): Move down after
struct machine_function definition; use saved frame_size;
return bool.
(struct machine_function): Add sa_mask, sa_size, frame_size.
(alpha_sa_mask, alpha_sa_size, compute_frame_size): Merge into ...
(alpha_compute_frame_layout): ... new function.
(TARGET_COMPUTE_FRAME_LAYOUT): New.
(alpha_initial_elimination_offset): Use saved sa_size.
(alpha_vms_initial_elimination_offset): Likewise.
(alpha_vms_can_eliminate): Remove alpha_sa_size call.
(alpha_expand_prologue): Use saved frame data.  Merge integer
and fp register save loops.
(alpha_expand_epilogue): Likewise.
(alpha_start_function): Use saved frame data.
* config/alpha/alpha-protos.h (direct_return): Update.
(alpha_sa_size): Remove.

From-SVN: r271970

ChangeLog for PR c++/63149

From-SVN: r271969

PR c++/63149 - wrong auto deduction from braced-init-list

2019-06-04  Nina Dinka Ranns  <dinka.ranns@gmail.com>

    gcc/cp/
    * pt.c (listify_autos): Use non cv qualified auto_node in
    std::initializer_list<auto>.

    testsuite/
    * g++.dg/cpp0x/initlist-deduce2.C: New test.

From-SVN: r271968

aix-unwind.h (LR_REGNO): Rename to R_LR.

* config/rs6000/aix-unwind.h (LR_REGNO): Rename to R_LR.
(CR2_REGNO): Rename to R_CR2.
(XER_REGNO): Rename to R_XER.
(FIRST_ALTIVEC_REGNO): Rename to R_FIRST_ALTIVEC.
(VRSAVE_REGNO): Rename to R_VRSAVE.
(VSCR_REGNO): R_VSCR.

From-SVN: r271967

rs6000: Fix new testcase

At least with -m32 you need -maltivec if you #include <altivec.h>.

gcc/testsuite/
* g++.target/powerpc/undef-bool-3.C: Add -maltivec to dg-options.

From-SVN: r271966

c-pragma.c (handle_pragma_weak): Adjust quoting in a diagnostic.

gcc/c-family/ChangeLog:

* c-pragma.c (handle_pragma_weak): Adjust quoting in a diagnostic.
* c.opt (-Wformat-diag): Remove a spurious period.

gcc/testsuite/ChangeLog:

* gcc.dg/weak/weak-19.c: New test.

From-SVN: r271965

fold-const.c (extract_muldiv_1): Do not distribute a multiplication by a power-of-two value.

* fold-const.c (extract_muldiv_1) <PLUS_EXPR>: Do not distribute a
multiplication by a power-of-two value.
(fold_plusminus_mult_expr): Use pow2p_hwi to spot a power-of-two value
and turn the modulo operation into a masking operation.

From-SVN: r271963

[PATCH][GCC][AARCH64] Add tests for pointer authentication B-key

gcc/testsuite/ChangeLog
* gcc.target/aarch64/return_address_sign_b_1.c: New file.
* gcc.target/aarch64/return_address_sign_b_2.c: New file.
* gcc.target/aarch64/return_address_sign_b_3.c: New file.
* gcc.target/aarch64/return_address_sign_builtin.c: New file.
* g++.target/aarch64/return_address_sign_ab_exception.C: New file.
* g++.target/aarch64/return_address_sign_b_exception.C: New file.

From-SVN: r271954

re PR debug/90733 (ICE in simplify_subreg, at simplify-rtx.c:6440)

PR debug/90733
* var-tracking.c (vt_expand_loc_callback): Don't create raw subregs
with VOIDmode inner operands.

* gcc.dg/pr90733.c: New test.

From-SVN: r271952

re PR middle-end/90726 (exponential behavior on SCEV results everywhere)

2019-06-05  Richard Biener  <rguenther@suse.de>

PR middle-end/90726
* tree-ssa-loop-niter.c (expand_simple_operations): Do not
turn an expression graph into a tree.

* gcc.dg/pr90726.c: Enable IVOPTs.

From-SVN: r271950

omp-expand.c (struct omp_region): Add has_lastprivate_conditional member.

* omp-expand.c (struct omp_region): Add has_lastprivate_conditional
member.
(expand_parallel_call): If region->inner->has_lastprivate_conditional,
treat it like explicit monotonic schedule modifier.
(expand_omp_for): Initialize has_lastprivate_conditional.
If fd.lastprivate_conditional != 0, treat it like explicit monotonic
schedule modifier.

From-SVN: r271949

omp-low.c (lower_rec_input_clauses): For lastprivate conditional references...

* omp-low.c (lower_rec_input_clauses): For lastprivate conditional
references, lookup in in hash map MEM_REF operand instead of the
MEM_REF itself.
(lower_omp_1): When looking for lastprivate conditional assignments,
handle MEM_REFs with REFERENCE_TYPE operands.

* testsuite/libgomp.c++/lastprivate-conditional-1.C: New test.
* testsuite/libgomp.c++/lastprivate-conditional-2.C: New test.

From-SVN: r271948

omp-low.c (lower_rec_input_clauses): Force max_vf if is_simd and on privatization clauses OMP_CLAUSE_DECL is...

* omp-low.c (lower_rec_input_clauses): Force max_vf if is_simd and
on privatization clauses OMP_CLAUSE_DECL is privatized by reference
and references a VLA.  Handle references to non-VLAs if is_simd
all privatization clauses like reductions.
(lower_rec_input_clauses) <case do_private, case do_firstprivate>:
If omp_is_reference, use always omp simd arrays and set
DECL_VALUE_EXPR in that case, if lower_rec_simd_input_clauses
fails, emit reference initialization.

* g++.dg/vect/simd-1.cc: New test.

From-SVN: r271947

re PR target/89803 (Missing AVX512 intrinsics)

gcc/
2019-06-05  Hongtao Liu  <hongtao.liu@intel.com>

PR target/89803
* config/i386/avx512dqintrin.h (_mm_mask_fpclass_ss_mask,
_mm_mask_fpclass_sd_mask): New intrinsics.
(_mm_fpclass_ss_mask, _mm_fpclass_sd_mask): Modified, use new builtins.
* config/i386/i386-builtin.def
(__builtin_ia32_fpclassss_mask, __builtin_ia32_fpclasssd_mask):
New builtins.
(__builtin_ia32_fpclassss, __builtin_ia32_fpclasssd): Deleted.
* config/i386/i386-builtin-types.def (DEF_FUNCTION_TYPE (QI, V2DF, INT),
DEF_FUNCTION_TYPE (QI, V4SF, INT)): Deleted.
* config/i386/i386-expand.c (case QI_FTYPE_V4SF_INT,
case QI_FTYPE_V2SF_INT): Ditto.
* config/i386/sse.md
(define_insn "avx512dq_vmfpclass<mode><mask_scalar_merge_name>):
Extended to insnstructions with mask operands.

gcc/testsuite
2019-06-05  Hongtao Liu  <hongtao.liu@intel.com>

PR target/89803
* gcc.target/i386/avx-1.c (__builtin_ia32_fpclasssss,
__builtin_ia32_fpclasssd): Removed.
(__builtin_ia32_fpclassss_mask, __builtin_ia32_fpclasssd_mask): Define.
* gcc.target/i386/sse-13.c (__builtin_ia32_fpclasssss,
__builtin_ia32_fpclasssd): Removed.
(__builtin_ia32_fpclassss_mask, __builtin_ia32_fpclasssd_mask): Define.
* gcc.target/i386/sse-23.c (__builtin_ia32_fpclasssss,
__builtin_ia32_fpclasssd): Removed.
(__builtin_ia32_fpclassss_mask, __builtin_ia32_fpclasssd_mask): Define.
* gcc.target/i386/avx512dq-vfpclassss-2.c: New.
* gcc.target/i386/avx512dq-vfpclasssd-2.c: New.
* gcc.target/i386/avx512dq-vfpclassss-1.c (avx512f_test):
Add test for _mm_mask_fpclass_ss_mask.
* gcc.target/i386/avx512dq-vfpclasssd-1.c (avx512f_test):
Add test for _mm_mask_fpclass_sd_mask.

From-SVN: r271946

compiler: statically allocate constant interface data

    When converting a constant to interface, such as interface{}(42)
    or interface{}("hello"), if the interface escapes, we currently
    generate a heap allocation to hold the constant value.

    This CL changes it to generate a static allocation instead, as
    the gc compiler does. This reduces allocations in such cases.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/180277

From-SVN: r271945

Daily bump.

From-SVN: r271944

rs6000: Update direct-move* testcases

This fixes some testcases that the last fifteen or so patches broke.
In all these cases we no longer need to set VSX_REG_ATTR: the default
value of "wa" is correct.

gcc/testsuite/
* gcc.target/powerpc/direct-move-double1.c (VSX_REG_ATTR): Delete.
* gcc.target/powerpc/direct-move-double2.c: Ditto.
* gcc.target/powerpc/direct-move-float1.c: Ditto.
* gcc.target/powerpc/direct-move-float2.c: Ditto.
* gcc.target/powerpc/direct-move-vint1.c: Ditto.
* gcc.target/powerpc/direct-move-vint2.c: Ditto.

From-SVN: r271940

rs6000: Remove wp and wq

wp becomes wa with isa p9tf, and wq is replaced by wa with isa p9kf.
To manage to do that, there is the new mode attribute VSisa.

* config/rs6000/constraints.md (define_register_constraint "wp"):
Delete.
(define_register_constraint "wq"): Delete.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_wp and RS6000_CONSTRAINT_wq.
* config/rs6000/vsx.md (define_mode_attr VSr3): Delete.
(define_mode_attr VSa): Delete.
(define_mode_attr VSisa): New.
(rest of file): Adjust.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271939

rs6000: Add p9kf and p9tf isa values

This adds "p9kf" and "p9tf" isa values, to be used for instruction
alternatives where KFmode resp. TFmode is used.

* config/rs6000/rs6000.md (define_attr "isa"): Add p9kf and p9tf.
(define_attr "enabled"): Handle those new isa values.

From-SVN: r271938

rs6000: More simplification

A whole bunch of mode attributes are used only once.  Things are
easier to read if we just expand those patterns.  It's shorter, too.

* config/rs6000/vsx.md (define_mode_attr VSr4): Delete.
(define_mode_attr VSr5): Delete.
(define_mode_attr VStype_sqrt): Delete.
(define_mode_iterator VSX_SPDP): Delete.
(define_mode_attr VS_spdp_res): Delete.
(define_mode_attr VS_spdp_insn): Delete.
(define_mode_attr VS_spdp_type): Delete.
(*vsx_sqrt<mode>2): Adjust.
(vsx_<VS_spdp_insn>): Delete, split to...
(vsx_xscvdpsp): ... this.  New.  And...
(vsx_xvcvspdp): ... this.  New.  And...
(vsx_xvcvdpsp): ... this.  New.

From-SVN: r271937

rs6000: <VSs> -> <sd>p

We don't need the <VSs> mode attribute, if we make <sd> work for V4SF
and V2DF just like for SF and DF.

* config/rs6000/rs6000.md (define_mode_attr sd): Add values for V4SF
and V2DF.
* config/rs6000/vsx.md (define_mode_attr VSs): Delete.
(rest of file): Adjust.

From-SVN: r271936

rs6000: ww->wa in testsuite

I should have factored this series better.  Oh well.  Near the end,
let's call it loose ends.

gcc/testsuite/
* gcc.target/powerpc/direct-move-float1.c: Use "wa" instead of "ww"
constraint.

From-SVN: r271935

rs6000: VSa->wa for some more cases

* config/rs6000/vsx.md (vsx_<VS_spdp_insn>): Use wa instead of <VSa>.
(vsx_extract_<mode>_var): Ditto.

From-SVN: r271934

rs6000: Simplify <VSa> for VSX_TI

When used in VSX_TI, <VSa> is always just "wa".

* config/rs6000/vsx.md: Replace all <VSa> that are used with VSX_TI
with just "wa".

From-SVN: r271933

rs6000: ww -> wa

"ww" can always be "wa".

* config/rs6000/constraints.md (define_register_constraint "ww"):
Delete.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_ww.
* config/rs6000/rs6000.md: Adjust.
* config/rs6000/vsx.md: Adjust.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271932

rs6000: Remove Ftrad, Fvsx, Fs; add s and sd

This removes the <Ftrad>, <Fvsx>, and <Fs> mode attributes, and creates
new <sd> and <s> mode attributes instead.  <sd> is either "s" or "d",
depending on whether the mode is single-precision or double-precision
floating point; and <s> is either "s" or nothing.

* config/rs6000/rs6000.md (SFDF, SFDF2): Adjust comments.
(define_mode_attr sd): New.
(define_mode_attr s): New.
(define_mode_attr Ftrad): Delete.
(define_mode_attr Fvsx): Delete.
(define_mode_attr Fs): Delete.
(rest of file): Use the new mode attributes.
* config.rs6000/vsx.md: Use the new mode attributes.

From-SVN: r271931

rs6000: Simplify <VSa> for VSX_W

When used in VSX_W, <VSa> is always just "wa".

* config/rs6000/vsx.md: Replace all <VSa> that are used with VSX_W
with just "wa".

From-SVN: r271930

rs6000: Simplify VS[ra]* for VSX_[BDF]

When used in VSX_B, VSX_D, or VSX_F, both <VSr> and <VSa> are always
just "wa" now.  Similarly <VSr2> and <VSr3>.  The former of those is
always "wa", so we can remove the mode attribute completely.

* config/rs6000/vsx.md (define_mode_attr VSr2): Delete.
(rest of file): Replace all <VSa>, <VSr>, <VSr2>, and <VSr3> that are
used with VSX_B, VSX_D, or VSX_F, with just "wa".

From-SVN: r271929

decl.c (grokdeclarator): Use declarator->id_loc in two additional places.

/cp
2019-06-04  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (grokdeclarator): Use declarator->id_loc in two
additional places.

/testsuite
2019-06-04  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/concepts/pr60573.C: Test locations too.
* g++.dg/cpp0x/deleted13.C: Likewise.
* g++.dg/parse/error29.C: Likewise.
* g++.dg/parse/qualified4.C: Likewise.
* g++.dg/template/crash96.C Likewise.
* g++.old-deja/g++.brendan/crash22.C Likewise.
* g++.old-deja/g++.brendan/crash23.C Likewise.
* g++.old-deja/g++.law/visibility10.C Likewise.
* g++.old-deja/g++.other/decl5.C: Likewise.

From-SVN: r271928

re PR target/78263 (Compile failure with AltiVec library on PPC64le and -std=c++11 flag)

[gcc]

2019-06-04  Bill Schmidt  <wschmidt@linux.ibm.com>

PR target/78263
* config/rs6000/altivec.h: Don't #define vector, pixel, bool for
C++ with strict ANSI requirements.

[gcc/testsuite]

2019-06-04  Bill Schmidt  <wschmidt@linux.ibm.com>

PR target/78263
* g++.target/powerpc: New directory.
* g++.target/powerpc/powerpc.exp: New test driver.
* g++.target/powerpc/undef-bool-3.C: New.

From-SVN: r271927

Simplify loop size when step=1

2019-06-04  Marc Glisse  <marc.glisse@inria.fr>

* tree-ssa-loop-niter.c (number_of_iterations_ne): Skip
computations when step is 1.

From-SVN: r271926

rs6000: wf -> wa

"wf" is just "wa".

* config/rs6000/constraints.md (define_register_constraint "wf"):
Delete.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_wf.
* config/rs6000/rs6000.md: Adjust.
* config/rs6000/vsx.md: Adjust.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271921

AARCH64: ILP32: Fix aarch64_asan_shadow_offset

aarch64_asan_shadow_offset is using the wrong
offset for ILP32.  Change it to be a decent one.

ChangeLog:
* config/aarch64/aarch64.c (aarch64_asan_shadow_offset):
Fix ILP32 value.

From-SVN: r271920

rs6000: wd -> wa

"wd" is just "wa".

* config/rs6000/constraints.md (define_register_constraint "wd"):
Delete.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_wd.
* config/rs6000/rs6000.md: Adjust.
* config/rs6000/vsx.md: Adjust.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271919

rs6000: Delete Fv2

<Fv2> always is "wa".

* config/rs6000/rs6000.md (define_mode_attr Fv2): Delete.
(rest of file): Adjust.

From-SVN: r271918

rs6000: Delete VS_64reg

<VS_64reg> now always is "wa".  Make that simplification.

* config/rs6000/vsx.md (define_mode_attr VS_64reg): Delete.
(*vsx_extract_<P:mode>_<VSX_D:mode>_load): Adjust.
(vsx_splat_<mode>_reg): Adjust.

From-SVN: r271917

rs6000: ws -> wa

"ws" is just "wa".

* config/rs6000/constraints.md (define_register_constraint "ws"):
Delete.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_ws.
* config/rs6000/rs6000.md: Adjust.
* config/rs6000/vsx.md: Adjust.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271916

rs6000: wv -> v+p7v

"wv" is "v", but only if VSX is enabled (otherwise it's NO_REGS).  So
this patch sets "isa" "p7v" to all alternatives that used "wv" before
(and that do not already need a later ISA), and changes the constraint.

* config/rs6000/constraints.md (define_register_constraint "wv"):
Delete.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_wv.
* config/rs6000/rs6000.md: Adjust.
* config/rs6000/vsx.md: Adjust.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271915

rs6000: wi->wa, wt->wa

"wi" and "wt" mean just the same as "wa" these days.  Change them to
the simpler name.

* config/rs6000/constraints.md (define_register_constraint "wi"):
Delete.
(define_register_constraint "wt"): Delete.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_wi and RS6000_CONSTRAINT_wt.
* config/rs6000/rs6000.md: Adjust.
* config/rs6000/vsx.md: Adjust.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271914

aarch64: fix asm visibility for extern symbols

Commit r271869 broke visibility declarations in asm for extern symbols, because
the new ASM_OUTPUT_EXTERNAL hook failed to call the default hook for elf.

gcc/ChangeLog:

* config/aarch64/aarch64-protos.h (aarch64_asm_output_external): Remove
const.
* config/aarch64/aarch64.c (aarch64_asm_output_external): Call
default_elf_asm_output_external.

From-SVN: r271913

[C++ PATCH] structure tag lookup

https://gcc.gnu.org/ml/gcc-patches/2019-06/msg00179.html
* name-lookup.c (lookup_type_scope_1): Reimplement, handle local
and namespace scopes separately.

From-SVN: r271912

PR c++/60531 - Wrong error about unresolved overloaded function

For PR60531, GCC wrongly rejects function templates with explicitly
specified template arguments as overloaded. They are resolved by
resolve_nondeduced_context, which is normally called by
cp_default_conversion through decay_conversion, but the latter have
extra effects making them unusable here. Calling the former directly
does work.

* typeck.c (cp_build_binary_op): See if overload can be resolved.
(cp_build_unary_op): Ditto.

* g++.dg/template/operator15.C: New test.

From-SVN: r271910

Reduce accumulated garbage in constexpr evaluation.

We want to evaluate the arguments to a call before looking into the cache so
that we have constant values, but if we then find the call in the cache we
end up with a TREE_LIST that we don't end up using; in highly recursive
constexpr evaluation this ends up being a large proportion of the garbage
generated.

The cxx_eval_increment_expression hunk is less important, but it's an easy
tweak; we only use the MODIFY_EXPR to evaluate it, so after that it's
garbage.

* constexpr.c (cxx_eval_call_expression): ggc_free any bindings we
don't save.
(cxx_eval_increment_expression): ggc_free the MODIFY_EXPR after
evaluating it.

From-SVN: r271909

Remove dead code in IPA ICF.

2019-06-04  Martin Liska  <mliska@suse.cz>

* ipa-icf.c (INCLUDE_LIST): Remove.
(sem_item_optimizer::execute): Remove call to init_wpa.
* ipa-icf.h (init_wpa): Remove.

From-SVN: r271908

gimplify.c (gimplify_scan_omp_clauses): Don't sorry_at on lastprivate conditional on combined for simd.

* gimplify.c (gimplify_scan_omp_clauses): Don't sorry_at on lastprivate
conditional on combined for simd.
* omp-low.c (struct omp_context): Add combined_into_simd_safelen0
member.
(lower_rec_input_clauses): For gimple_omp_for_combined_into_p max_vf 1
constructs, don't remove lastprivate_conditional_map, but instead set
ctx->combined_into_simd_safelen0 and adjust hash_map, so that it points
to parent construct temporaries.
(lower_lastprivate_clauses): Handle ctx->combined_into_simd_safelen0
like !ctx->lastprivate_conditional_map.
(lower_omp_1) <case GIMPLE_ASSIGN>: If up->combined_into_simd_safelen0,
use up->outer context instead of up.
* omp-expand.c (expand_omp_for_generic): Perform cond_var bump even if
gimple_omp_for_combined_p.
(expand_omp_for_static_nochunk): Likewise.
(expand_omp_for_static_chunk): Add forgotten cond_var bump that was
probably moved over into expand_omp_for_generic rather than being copied
there.
gcc/cp/
* cp-tree.h (CP_OMP_CLAUSE_INFO): Allow for any clauses up to _condvar_
instead of only up to linear.
gcc/testsuite/
* c-c++-common/gomp/lastprivate-conditional-2.c (foo): Don't expect
a sorry_at on any of the clauses.
libgomp/
* testsuite/libgomp.c-c++-common/lastprivate-conditional-7.c: New test.
* testsuite/libgomp.c-c++-common/lastprivate-conditional-8.c: New test.
* testsuite/libgomp.c-c++-common/lastprivate-conditional-9.c: New test.
* testsuite/libgomp.c-c++-common/lastprivate-conditional-10.c: New test.

From-SVN: r271907

Fix typo in tests.

2019-06-04  Martin Liska  <mliska@suse.cz>

* value-prof.c (dump_histogram_value): Fix typo.
(gimple_mod_subtract_transform): Likewise.

From-SVN: r271904

re PR middle-end/90726 (exponential behavior on SCEV results everywhere)

2019-06-04  Richard Biener  <rguenther@suse.de>

PR middle-end/90726
* tree-chrec.c (chrec_contains_symbols): Add to visited.
(tree_contains_chrecs): Likewise.
(chrec_contains_symbols_defined_in_loop): Move here and avoid
exponential behaivor from ...
* tree-scalar-evolution.c (chrec_contains_symbols_defined_in_loop):
... here.
(expression_expensive_p): Avoid exponential behavior and compute
expanded size, rejecting any expansion.
* tree-ssa-loop-ivopts.c (abnormal_ssa_name_p): Remove.
(idx_contains_abnormal_ssa_name_p): Likewise.
(contains_abnormal_ssa_name_p_1): New helper for walk_tree.
(contains_abnormal_ssa_name_p): Simplify and use
walk_tree_without_duplicates.

* gcc.dg/pr90726.c: New testcase.

From-SVN: r271903

re PR fortran/90738 (gfortran.dg/pointer_array_10.f90 etc. FAIL)

2019-06-04  Richard Biener  <rguenther@suse.de>

PR tree-optimization/90738
Revert
2019-06-03  Richard Biener  <rguenther@suse.de>

* tree-ssa-sccvn.c (ao_ref_init_from_vn_reference): Get original
full reference tree and record in ref->ref.
(vn_reference_lookup_3): Pass in original ref to
ao_ref_init_from_vn_reference.
(vn_reference_lookup): Likewise.
* tree-ssa-sccvn.h (ao_ref_init_from_vn_reference): Adjust prototype.
* tree-ssa-alias.c (nonoverlapping_component_refs_of_decl_p):
Handle non-decl bases in the original reference.

* gcc.dg/tree-ssa/alias-access-path-1.c: Scan fre1.

* gcc.dg/torture/pr90738.c: New testcase.

From-SVN: r271902

IPA ICF: use fibonacci heap instead of list as a worklist.

2019-06-04  Martin Liska  <mliska@suse.cz>

* ipa-icf.c (sem_item_optimizer::add_item_to_class): Count
number of references.
(sem_item_optimizer::do_congruence_step):
(sem_item_optimizer::worklist_push): Dump how references
a class has.
(sem_item_optimizer::worklist_pop): Use heap.
(sem_item_optimizer::process_cong_reduction): Likewise.
* ipa-icf.h: Use fibonacci_heap insteam of std::list.

From-SVN: r271901

IPA ICF: rewrite references into a hash_map.

2019-06-04  Martin Liska  <mliska@suse.cz>

* ipa-icf.h (struct sem_usage_pair_hash): New.
(sem_usage_pair_hash::hash): Likewise.
(sem_usage_pair_hash::equal): Likewise.
(struct sem_usage_hash): Likewise.
* ipa-icf.c (sem_item::sem_item): Initialize
referenced_by_count.
(sem_item::add_reference): Register a reference
in ref_map and not in target->usages.
(sem_item::setup): Remove initialization of
dead vectors.
(sem_item::~sem_item): Remove usage of dead vectors.
(sem_item::dump): Remove dump of references.
(sem_item_optimizer::sem_item_optimizer): Initialize
m_references.
(sem_item_optimizer::read_section): Remove useless
dump.
(sem_item_optimizer::parse_funcs_and_vars): Likewise here.
(sem_item_optimizer::build_graph): Pass m_references
to ::add_reference.
(sem_item_optimizer::verify_classes): Remove usage of dead
vectors.
(sem_item_optimizer::traverse_congruence_split): Return true
when a class is split.
(sem_item_optimizer::do_congruence_step_for_index): Use
hash_map for look up of (sem_item *, index). That brings
significant speed up.
(sem_item_optimizer::do_congruence_step): Return true
when a split is done.
(congruence_class::is_class_used): Use referenced_by_count.
2019-06-04  Martin Liska  <mliska@suse.cz>

* c-c++-common/goacc/acc-icf.c: Change scanned pattern.
* gfortran.dg/goacc/pr78027.f90: Likewise.

From-SVN: r271900

Daily bump.

From-SVN: r271899

PR90689, ICE in extract_insn on ppc64le

PR target/90689
* config/rs6000/rs6000.c (rs6000_call_aix): Correct r271753 merge
error.

From-SVN: r271895

compiler, runtime, reflect: generate unique type descriptors

    Currently, the compiler already generates common symbols for type
    descriptors, so the type descriptors are unique. However, when a
    type is created through reflection, it is not deduplicated with
    compiler-generated types. As a consequence, we cannot assume type
    descriptors are unique, and cannot use pointer equality to
    compare them. Also, when constructing a reflect.Type, it has to
    go through a canonicalization map, which introduces overhead to
    reflect.TypeOf, and lock contentions in concurrent programs.

    In order for the reflect package to deduplicate types with
    compiler-created types, we register all the compiler-created type
    descriptors at startup time. The reflect package, when it needs
    to create a type, looks up the registry of compiler-created types
    before creates a new one. There is no lock contention since the
    registry is read-only after initialization.

    This lets us get rid of the canonicalization map, and also makes
    it possible to compare type descriptors with pointer equality.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179598

From-SVN: r271894

parser.c (cp_parser_unqualified_id): Use build_min_nt_loc in five places.

2019-06-03  Paolo Carlini  <paolo.carlini@oracle.com>

* parser.c (cp_parser_unqualified_id): Use build_min_nt_loc in
       five places.

From-SVN: r271893

libgo: delay applying profile stack-frame skip until fixup

    When the runtime collects a stack trace to associate it with some
    profiling event (mem alloc, mutex, etc) there is a skip count passed
    to runtime.Callers (or equivalent) to skip some known count of frames
    in order to get to the "interesting" frame corresponding to the
    profile event. Now that the profiling mechanism uses lazy fixup (when
    removing compiler artifacts like thunks, morestack calls etc), we also
    need to move the frame skipping logic after the fixup, so as to insure
    that the skip count isn't thrown off by these artifacts.

    Fixes golang/go#32290.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179740

From-SVN: r271892

compiler: permit inlining references to global variables

    This requires tracking all references to unexported variables, so that
    we can make them global symbols in the object file, and can export
    them so that other compilations can see the right definition for their
    own inline bodies.

    This introduces a syntax for referencing names defined in other
    packages: a <pNN> prefix, where NN is the package index.  This will
    need to be added to gccgoimporter, but I didn't do it yet since it
    isn't yet possible to create an object for which gccgoimporter will
    see a <pNN> prefix.

    This increases the number of inlinable functions in the standard
    library from 181 to 215, adding functions like context.Background.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/177920

From-SVN: r271891

runtime: remove unnecessary functions calling between C and Go

    These functions were needed during the transition of the runtime from
    C to Go, but are no longer necessary.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179879

From-SVN: r271890

rs6000: Delete -mmfpgpr

This patch makes the -mmfpgpr option not do anything except warn that
the option is deprecated.

* config/rs6000/rs6000.h (MASK_MFPGPR): Delete.
* config/rs6000/rs6000.c (direct_move_p): Adjust.
(rs6000_secondary_reload_simple_move): Adjust.
(rs6000_opt_masks): Neuter the "mfpgpr" option.
* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Adjust.
* config/rs6000/rs6000-cpus.def (ISA_2_5_MASKS_EMBEDDED): Adjust
comment.
(power6x): Adjust.
* config/rs6000/rs6000.md (floatsi<mode>2_lfiwax): Adjust.
(floatunssi<mode>2_lfiwzx): Adjust.
(fix_trunc<mode>si2_stfiwx): Adjust.
(fixuns_trunc<mode>si2_stfiwx): Adjust.
* config/rs6000/rs6000.opt (mno-mfpgpr): New.
(mfpgpr): Mark as deprecated.
* doc/extend.texi (PowerPC Function Attributes): Delete mfpgpr.
(Basic PowerPC Built-in Functions Available on ISA 2.05): Adjust.
* doc/invoke.texi (RS/6000 and PowerPC Options): Delete -mmfpgpr.

gcc/testsuite/
* gcc.target/powerpc/mmfpgpr.c: Delete.

From-SVN: r271889

rs6000: Delete wg

The "wg" constraint is used for the floating point side on mfpgpr
instructions.  Those instructions do not exist on any relevant
hardware.  This patch deletes the constraint and the insns using it.

* config/rs6000/constraints.md (define_register_constraint "wg"):
Delete.
* config/rs6000/rs6000.h (enum r6000_reg_class_enum): Delete
RS6000_CONSTRAINT_wg.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Adjust.
(rs6000_init_hard_regno_mode_ok): Adjust.
* config/rs6000/rs6000.md (*mov<mode>_softfloat32, *movdi_internal64):
Delete "wg" alternatives.
* doc/md.texi (Machine Constraints): Adjust.

From-SVN: r271888