PR tree-optimization/93210
* fold-const.h (native_encode_initializer,
can_native_interpret_type_p): Declare.
* fold-const.c (native_encode_string): Fix up handling with off != -1,
simplify.
(native_encode_initializer): New function, moved from dwarf2out.c.
Adjust to native_encode_expr compatible arguments, including dry-run
and partial extraction modes. Don't handle STRING_CST.
(can_native_interpret_type_p): No longer static.
* gimple-fold.c (fold_ctor_reference): For native_encode_expr, verify
offset / BITS_PER_UNIT fits into int and don't call it if
can_native_interpret_type_p fails. If suboff is NULL and for
CONSTRUCTOR fold_{,non}array_ctor_reference returns NULL, retry with
native_encode_initializer.
(fold_const_aggregate_ref_1): Formatting fix.
* dwarf2out.c (native_encode_initializer): Moved to fold-const.c.
(tree_add_const_value_attribute): Adjust caller.
* gcc.dg/pr93210.c: New test.
* g++.dg/opt/pr93210.C: New test.
From-SVN: r280141
PR tree-optimization/90838
* tree-ssa-forwprop.c (simplify_count_trailing_zeroes): Use
SCALAR_INT_TYPE_MODE instead of TYPE_MODE as operand of
CTZ_DEFINED_VALUE_AT_ZERO.
From-SVN: r280140
2020-01-10 Vladimir Makarov <vmakarov@redhat.com>
PR inline-asm/93027
* gcc.target/i386/pr93027.c: Use the right PR number in the test.
From-SVN: r280138
PR libgomp/93219
* libgomp.h (gomp_print_string): Change return type from void to int.
* affinity-fmt.c (gomp_print_string): Likewise. Return true if
not all characters have been written.
From-SVN: r280137
This patch adds support for obscuring the line numbers printed in the
left-hand margin when printing the source code, converting them to "NN",
e.g from:
7111 | if (!(flags & 0x0001)) {
| ^
| |
| (1) following 'true' branch...
7112 |
to:
NN | if (!(flags & 0x0001)) {
| ^
| |
| (1) following 'true' branch...
NN |
This is useful in followup patches e.g. when testing how interprocedural
paths are printed using multiline.exp, to avoid depending on precise line
numbers.
gcc/testsuite/ChangeLog:
* lib/gcc-dg.exp (cleanup-after-saved-dg-test): Reset global
nn_line_numbers_enabled.
* lib/multiline.exp (nn_line_numbers_enabled): New global.
(dg-enable-nn-line-numbers): New proc.
(maybe-handle-nn-line-numbers): New proc.
* lib/prune.exp (prune_gcc_output): Call maybe-handle-nn-line-numbers.
From-SVN: r280134
2020-01-10 Vladimir Makarov <vmakarov@redhat.com>
PR inline-asm/93207
* lra-constraints.c (match_reload): Permit input operands have the
same mode as output while other input operands have a different
mode.
2020-01-10 Vladimir Makarov <vmakarov@redhat.com>
PR inline-asm/93207
* gcc.target/i386/pr93207.c: New test.
From-SVN: r280133
Support common idioms for count trailing zeroes using an array lookup.
The canonical form is array[((x & -x) * C) >> SHIFT] where C is a magic
constant which when multiplied by a power of 2 creates a unique value
in the top 5 or 6 bits. This is then indexed into a table which maps it
to the number of trailing zeroes. When the table is valid, we emit a
sequence using the target defined value for ctz (0):
int ctz1 (unsigned x)
{
static const char table[32] =
{
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
};
return table[((unsigned)((x & -x) * 0x077CB531U)) >> 27];
}
Is optimized to:
rbit w0, w0
clz w0, w0
and w0, w0, 31
ret
gcc/
PR tree-optimization/90838
* tree-ssa-forwprop.c (check_ctz_array): Add new function.
(check_ctz_string): Likewise.
(optimize_count_trailing_zeroes): Likewise.
(simplify_count_trailing_zeroes): Likewise.
(pass_forwprop::execute): Try ctz simplification.
* match.pd: Add matching for ctz idioms.
testsuite/
PR tree-optimization/90838
* testsuite/gcc.target/aarch64/pr90838.c: New test.
From-SVN: r280132
gcc/ChangeLog:
2020-01-10 Stam Markianos-Wright <stam.markianos-wright@arm.com>
* config/aarch64/aarch64.c (aarch64_invalid_conversion): New function
for target hook.
(aarch64_invalid_unary_op): New function for target hook.
(aarch64_invalid_binary_op): New function for target hook.
gcc/testsuite/ChangeLog:
2020-01-10 Stam Markianos-Wright <stam.markianos-wright@arm.com>
* g++.target/aarch64/bfloat_cpp_typecheck.C: New test.
* gcc.target/aarch64/bfloat16_scalar_typecheck.c: New test.
* gcc.target/aarch64/bfloat16_vector_typecheck_1.c: New test.
* gcc.target/aarch64/bfloat16_vector_typecheck_2.c: New test.
From-SVN: r280130
Back in SVN r131862 richi removed this code to fix PR 34235, but didn't
remove the parallel code from the C front-end because the bug had previously
been fixed in r44080. This patch copies the code from C again.
* typeck.c (cp_build_binary_op): Restore short_shift code.
From-SVN: r280128
We don't unshare CONSTRUCTORs as often during constexpr evaluation, so we
need to unshare them here.
* constexpr.c (cxx_eval_outermost_constant_expr): Don't assume
CONSTRUCTORs are already unshared.
From-SVN: r280127
My patch for 93033 wasn't sufficient to handle all the possible sharing
introduced by split_nonconstant_init, and it occurred to me that it would
make sense to use the same unsharing technique as unshare_body, namely
copy_if_shared.
PR c++/93033
gcc/
* gimplify.c (copy_if_shared): No longer static.
* gimplify.h: Declare it.
gcc/cp/
* cp-gimplify.c (cp_gimplify_init_expr, cp_gimplify_expr): Use
copy_if_shared after cp_genericize_tree.
* typeck2.c (split_nonconstant_init): Don't unshare here.
From-SVN: r280126
related_vector_mode and compatible_vector_types_p make it possible
to generate 128-bit SVE code while still maintaining the distinction
between SVE vectors and Advanced SIMD vectors. We can therefore generate
VL-specific code for -msve-vector-bits=128 on little-endian targets.
In theory we could do the same for big-endian targets, but it could
have quite a high overhead; see the comment in the patch for details.
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* doc/invoke.texi (-msve-vector-bits=): Document that
-msve-vector-bits=128 now generates VL-specific code for
little-endian targets.
* config/aarch64/aarch64-sve-builtins.cc (register_builtin_types): Use
build_vector_type_for_mode to construct the data vector types.
* config/aarch64/aarch64.c (aarch64_convert_sve_vector_bits): Generate
VL-specific code for -msve-vector-bits=128 on little-endian targets.
(aarch64_simd_container_mode): Always prefer Advanced SIMD modes
for 128-bit vectors.
gcc/testsuite/
* gcc.target/aarch64/sve/struct_vect_1.c (N): Protect with #ifndef.
* gcc.target/aarch64/sve/pcs/return_1_128.c: New test.
* gcc.target/aarch64/sve/pcs/return_4_128.c: Likewise.
* gcc.target/aarch64/sve/pcs/return_5_128.c: Likewise.
* gcc.target/aarch64/sve/pcs/return_6_128.c: Likewise.
* gcc.target/aarch64/sve/pcs/stack_clash_1_128.c: Likewise.
* gcc.target/aarch64/sve/pcs/stack_clash_2_128.c: Likewise.
* gcc.target/aarch64/sve/single_5.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_25.c: Likewise.
* gcc.target/aarch64/sve/struct_vect_26.c: Likewise.
From-SVN: r280125
gcc/c-family/ChangeLog:
PR c/93132
* c-attribs.c (append_access_attrs): Validate against the translated
access string rather than the human-readable representation.
gcc/testsuite/ChangeLog:
PR c/93132
* gcc.dg/attr-access-read-only-2.c: New test.
From-SVN: r280124
aarch64_evpc_sel (new in GCC 10) got the true and false vectors
the wrong way round, leading to execution failures with fixed-length
128-bit SVE.
Now that the ACLE types are in trunk, it's much easier to match
the exact asm sequence for a permute.
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64.c (aarch64_evpc_sel): Fix gen_vcond_mask
invocation.
gcc/testsuite/
* gcc.target/aarch64/sve/sel_1.c: Use SVE types for the arguments and
return values. Use check-function-bodies instead of scan-assembler.
* gcc.target/aarch64/sve/sel_2.c: Likewise
* gcc.target/aarch64/sve/sel_3.c: Likewise.
From-SVN: r280121
Since LWG 445 was implemented for GCC 4.7, the std::iterator base class
of std::istreambuf_iterator changes type depending on the -std mode
used. This creates an ABI incompatibility between different -std modes.
This change ensures the base class always has the same type. This makes
layout for C++98 compatible with the current -std=gnu++14 default, but
no longer compatible with C++98 code from previous releases. In practice
this is unlikely to cause real problems, because it only affects the
layout of types with two std::iterator base classes, one of which comes
from std::istreambuf_iterator. Such types are expected to be vanishingly
rare.
PR libstdc++/92285
* include/bits/streambuf_iterator.h (istreambuf_iterator): Make type
of base class independent of __cplusplus value.
[__cplusplus < 201103L] (istreambuf_iterator::reference): Override the
type defined in the base class
* testsuite/24_iterators/istreambuf_iterator/92285.cc: New test.
* testsuite/24_iterators/istreambuf_iterator/requirements/
base_classes.cc: Adjust expected base class for C++98.
From-SVN: r280116
aarch64_builtin_vectorized_function checked vectors based on the
number of elements and the element mode. This doesn't interact
well with fixed-length 128-bit SVE, where SVE modes can have those
same properties. (And we can't just use the built-ins for SVE because
the types use a different ABI. SVE handles this kind of thing using
optabs instead.)
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64-builtins.c
(aarch64_builtin_vectorized_function): Check for specific vector modes,
rather than checking the number of elements and the element mode.
From-SVN: r280114
The related_vector_mode series missed this case in
vect_create_epilog_for_reduction, where we want to create the
unsigned integer equivalent of another vector. Without it we
could mix SVE and Advanced SIMD vectors in the same operation.
This showed up on existing tests when testing with fixed-length
-msve-vector-bits=128.
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* tree-vect-loop.c (vect_create_epilog_for_reduction): Use
get_related_vectype_for_scalar_type rather than build_vector_type
to create the index type for a conditional reduction.
From-SVN: r280112
update_epilogue_loop_vinfo applies SSA renmaing to the DR_REF of a
gather or scatter, so that vect_check_gather_scatter continues to work.
However, we sometimes also rely on vect_check_gather_scatter when
using gathers and scatters to implement strided accesses.
This showed up on existing tests when testing with fixed-length
-msve-vector-bits=128.
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* tree-vect-loop.c (update_epilogue_loop_vinfo): Update DR_REF
for any type of gather or scatter, including strided accesses.
From-SVN: r280111
gcc/ChangeLog:
2020-01-10 Andre Vieira <andre.simoesdiasvieira@arm.com>
* tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref): Use
get_dr_vinfo_offset
* tree-vect-loop.c (update_epilogue_loop_vinfo): Remove orig_drs_init
parameter and its use to reset DR_OFFSET's.
(vect_transform_loop): Remove orig_drs_init argument.
* tree-vect-loop-manip.c (vect_update_init_of_dr): Update the offset
member of dr_vec_info rather than the offset of the associated
data_reference's innermost_loop_behavior.
(vect_update_init_of_dr): Pass dr_vec_info instead of data_reference.
(vect_do_peeling): Remove orig_drs_init parameter and its construction.
* tree-vect-stmts.c (check_scan_store): Replace use of DR_OFFSET with
get_dr_vinfo_offset.
(vectorizable_store): Likewise.
(vectorizable_load): Likewise.
From-SVN: r280107
One of the SVE run tests was specific to 256-bit SVE but tried to
run for all SVE lengths.
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/testsuite/
* gcc.target/aarch64/sve/index_1_run.c: Require aarch64_sve256_hw
rather than aarch64_sve_hw.
From-SVN: r280104
2020-01-10 Martin Liska <mliska@suse.cz>
PR ipa/93217
* ipa-inline-analysis.c (offline_size): Make proper parenthesis
encapsulation that was there before r280040.
From-SVN: r280103
2020-01-10 Richard Biener <rguenther@suse.de>
PR middle-end/93199
* tree-eh.c (sink_clobbers): Move clobbers to out-of-IL
sequences to avoid walking them again for secondary opportunities.
(pass_lower_eh_dispatch::execute): Instead actually insert
them here.
From-SVN: r280102
2020-01-10 Richard Biener <rguenther@suse.de>
PR middle-end/93199
* tree-eh.c (redirect_eh_edge_1): Avoid some work if possible.
(cleanup_all_empty_eh): Walk landing pads in reverse order to
avoid quadraticness.
From-SVN: r280101
2020-01-10 Martin Jambor <mjambor@suse.cz>
* params.opt (param_ipa_sra_max_replacements): Mark as Optimization.
* ipa-sra.c (pull_accesses_from_callee): New parameter caller, use it
to get param_ipa_sra_max_replacements.
(param_splitting_across_edge): Pass the caller to
pull_accesses_from_callee.
From-SVN: r280100
2020-01-10 Martin Jambor <mjambor@suse.cz>
* params.opt (param_ipcp_unit_growth): Mark as Optimization.
* ipa-cp.c (max_new_size): Removed.
(orig_overall_size): New variable.
(get_max_overall_size): New function.
(estimate_local_effects): Use it. Adjust dump.
(decide_about_value): Likewise.
(ipcp_propagate_stage): Do not calculate max_new_size, just store
orig_overall_size. Adjust dump.
(ipa_cp_c_finalize): Clear orig_overall_size instead of max_new_size.
From-SVN: r280099
2020-01-10 Martin Jambor <mjambor@suse.cz>
* params.opt (param_ipa_max_agg_items): Mark as Optimization
* ipa-cp.c (merge_agg_lats_step): New parameter max_agg_items, use
instead of param_ipa_max_agg_items.
(merge_aggregate_lattices): Extract param_ipa_max_agg_items from
optimization info for the callee.
From-SVN: r280098
2020-01-10 Richard Biener <rguenther@suse.de>
PR testsuite/93216
* gcc.dg/optimize-bswaphi-1.c: Split previously added
case into a LE and BE variant.
From-SVN: r280097
Previously if the only names defined by _test packages were examples,
the gotest script would emit an incorrect _testmain.go file.
I worked around that by marking the example_test.go files +build ignored.
This CL changes the gotest script to handle this case correctly,
and removes the now-unnecessary build tags.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/214039
From-SVN: r280085
The equality operators for _ExtPtr_allocator are defined as non-const
member functions, which causes ambiguities in C++20 due to the
synthesized operator!= candidates. They should always have been const.
The _Pointer_adapter class template has both value_type and element_type
members, which makes readable_traits<_Pointer_adapter<T>> ambiguous. The
intended workaround is to add a specialization of readable_traits.
* include/ext/extptr_allocator.h (_ExtPtr_allocator::operator==)
(_ExtPtr_allocator::operator!=): Add missing const qualifiers.
* include/ext/pointer.h (readable_traits<_Pointer_adapter<S>>): Add
partial specialization to disambiguate the two constrained
specializations.
From-SVN: r280067
With -std=gnu++2a and -Wsystem-headers the std::is_pod deprecation
causes some new diagnostics. This suppresses them.
* include/experimental/type_traits (experimental::is_pod_v): Disable
-Wdeprecated-declarations warnings around reference to std::is_pod.
* include/std/type_traits (is_pod_v): Likewise.
* testsuite/18_support/max_align_t/requirements/2.cc: Also check
is_standard_layout and is_trivial. Do not check is_pod for C++20.
* testsuite/20_util/is_pod/requirements/explicit_instantiation.cc:
Add -Wno-deprecated for C++20.
* testsuite/20_util/is_pod/requirements/typedefs.cc: Likewise.
* testsuite/20_util/is_pod/value.cc: Likewise.
* testsuite/experimental/type_traits/value.cc: Likewise.
From-SVN: r280066
This adds the deprecated attribute to std::is_pod and std::is_pod_v for
C++20.
2019-12-05 JeanHeyd "ThePhD" Meneide <phdofthehouse@gmail.com>
* include/bits/c++config (_GLIBCXX20_DEPRECATED): Add new macro.
* include/std/type_traits (is_pod, is_pod_v): Deprecate for C++20.
* testuite/20_util/is_pod/deprecated-2a.cc: New test.
From-SVN: r280065
2020-01-09 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/65428
* array.c (empty_constructor): New variable.
(empty_ts): New variable.
(expand_constructor): Save typespec in empty_ts.
Unset empty_constructor if there is an element.
(gfc_expand_constructor): Initialize empty_constructor
and empty_ts. If there was no explicit constructor
type and the constructor is empty, take the type from
empty_ts.
2020-01-09 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/65428
* gfortran.dg/zero_sized_11.f90: New test.
From-SVN: r280063
The deserialization functions for random number distributions fail to
check the stream state before using the extracted values. In some cases
this leads to using indeterminate values to resize a vector, and then
filling that vector with indeterminate values.
No values that affect control flow should be used without checking that a
good value was read from the stream.
Additionally, where reasonable to do so, defer modifying any state in
the distribution until all values have been successfully read, to avoid
modifying some of the distribution's parameters and leaving others
unchanged.
PR libstdc++/93205
* include/bits/random.h (operator>>): Check stream operation succeeds.
* include/bits/random.tcc (operator<<): Remove redundant __ostream_type
typedefs.
(operator>>): Remove redundant __istream_type typedefs. Check stream
operations succeed.
(__extract_params): New function to fill a vector from a stream.
* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
From-SVN: r280061
It helps the SVE2 ACLE support if aarch64_sve_arith_immediate_p and
aarch64_sve_sqadd_sqsub_immediate_p accept scalars as well as vectors.
2020-01-09 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64-protos.h (aarch64_sve_arith_immediate_p)
(aarch64_sve_sqadd_sqsub_immediate_p): Add a machine_mode argument.
* config/aarch64/aarch64.c (aarch64_sve_arith_immediate_p)
(aarch64_sve_sqadd_sqsub_immediate_p): Likewise. Handle scalar
immediates as well as vector ones.
* config/aarch64/predicates.md (aarch64_sve_arith_immediate)
(aarch64_sve_sub_arith_immediate, aarch64_sve_qadd_immediate)
(aarch64_sve_qsub_immediate): Update calls accordingly.
From-SVN: r280059
This patch imposes the same sort of structure on aarch64-sve2.md
as we already have for aarch64-sve.md, before it grows a lot more
patterns.
2020-01-09 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64-sve2.md: Add banner comments.
(<su>mulh<r>s<mode>3): Move further up file.
(<su>mull<bt><Vwide>, <r>shrnb<mode>, <r>shrnt<mode>)
(*aarch64_sve2_sra<mode>): Move further down file.
* config/aarch64/t-aarch64 (s-check-sve-md): Check aarch64-sve2.md too.
From-SVN: r280058
