2020-06-11 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* libgnat/s-aoinar.adb (Atomic_Fetch_And_Add,
Atomic_Fetch_And_Subtract): Add fallback using
compare-and-exchange, in case the integer type does not map to a
machine type.
gcc/ChangeLog:
PR sanitizer/95634
* asan.c (asan_emit_stack_protection): Fix emission for ilp32
by using Pmode instead of ptr_mode.
Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
Power supports vector memory access with length (in bytes) instructions.
Like existing fully masking for SVE, it is another approach to vectorize
the loop using partially-populated vectors.
As Richard Sandiford pointed out, we can rename the rgroup struct
rgroup_masks to rgroup_controls, rename its members mask_type to type,
masks to controls to be more generic.
Besides, this patch also renames some functions like vect_set_loop_mask
to vect_set_loop_control, release_vec_loop_masks to
release_vec_loop_controls, vect_set_loop_masks_directly to
vect_set_loop_controls_directly.
Bootstrapped/regtested on aarch64-linux-gnu.
gcc/ChangeLog:
* tree-vect-loop-manip.c (vect_set_loop_mask): Renamed to ...
(vect_set_loop_control): ... this.
(vect_maybe_permute_loop_masks): Rename rgroup_masks related things.
(vect_set_loop_masks_directly): Renamed to ...
(vect_set_loop_controls_directly): ... this. Also rename some
variables with ctrl instead of mask. Rename vect_set_loop_mask to
vect_set_loop_control.
(vect_set_loop_condition_masked): Rename rgroup_masks related things.
Also rename some variables with ctrl instead of mask.
* tree-vect-loop.c (release_vec_loop_masks): Renamed to ...
(release_vec_loop_controls): ... this. Rename rgroup_masks related
things.
(_loop_vec_info::~_loop_vec_info): Rename release_vec_loop_masks to
release_vec_loop_controls.
(can_produce_all_loop_masks_p): Rename rgroup_masks related things.
(vect_get_max_nscalars_per_iter): Likewise.
(vect_estimate_min_profitable_iters): Likewise.
(vect_record_loop_mask): Likewise.
(vect_get_loop_mask): Likewise.
* tree-vectorizer.h (struct rgroup_masks): Renamed to ...
(struct rgroup_controls): ... this. Also rename mask_type
to type and rename masks to controls.
Power supports vector memory access with length (in bytes) instructions.
Like existing fully masking for SVE, it is another approach to vectorize
the loop using partially-populated vectors.
As Richard Sandiford suggested, this patch is to update the existing
fully_masked_p field to using_partial_vectors_p. Introduce one macro
LOOP_VINFO_USING_PARTIAL_VECTORS_P for partial vectorization checking
usage, update the LOOP_VINFO_FULLY_MASKED_P with
LOOP_VINFO_USING_PARTIAL_VECTORS_P && !masks.is_empty() and still use
it for mask-based partial vectors approach specific checks.
Bootstrapped/regtested on aarch64-linux-gnu.
gcc/ChangeLog:
* tree-vect-loop-manip.c (vect_set_loop_condition): Rename
LOOP_VINFO_FULLY_MASKED_P to LOOP_VINFO_USING_PARTIAL_VECTORS_P.
(vect_gen_vector_loop_niters): Likewise.
(vect_do_peeling): Likewise.
* tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Rename
fully_masked_p to using_partial_vectors_p.
(vect_analyze_loop_costing): Rename LOOP_VINFO_FULLY_MASKED_P to
LOOP_VINFO_USING_PARTIAL_VECTORS_P.
(determine_peel_for_niter): Likewise.
(vect_estimate_min_profitable_iters): Likewise.
(vect_transform_loop): Likewise.
* tree-vectorizer.h (LOOP_VINFO_FULLY_MASKED_P): Updated.
(LOOP_VINFO_USING_PARTIAL_VECTORS_P): New macro.
Power supports vector memory access with length (in bytes) instructions.
Like existing fully masking for SVE, it is another approach to vectorize
the loop using partially-populated vectors.
As Richard Sandiford pointed out, we should extend the existing flag
can_fully_mask_p to be more generic, to indicate whether we have
any chances with partial vectors for this loop. So this patch
is to rename this flag to can_use_partial_vectors_p to be more
meaningful, also rename the macro LOOP_VINFO_CAN_FULLY_MASK_P
to LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P.
Bootstrapped/regtested on aarch64-linux-gnu.
gcc/ChangeLog:
* tree-vect-loop.c (_loop_vec_info::_loop_vec_info): Rename
can_fully_mask_p to can_use_partial_vectors_p.
(vect_analyze_loop_2): Rename LOOP_VINFO_CAN_FULLY_MASK_P to
LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P. Rename saved_can_fully_mask_p
to saved_can_use_partial_vectors_p.
(vectorizable_reduction): Rename LOOP_VINFO_CAN_FULLY_MASK_P to
LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P.
(vectorizable_live_operation): Likewise.
* tree-vect-stmts.c (permute_vec_elements): Likewise.
(check_load_store_masking): Likewise.
(vectorizable_operation): Likewise.
(vectorizable_store): Likewise.
(vectorizable_load): Likewise.
(vectorizable_condition): Likewise.
* tree-vectorizer.h (LOOP_VINFO_CAN_FULLY_MASK_P): Renamed to ...
(LOOP_VINFO_CAN_USE_PARTIAL_VECTORS_P): ... this.
(_loop_vec_info): Rename can_fully_mask_p to can_use_partial_vectors_p.
The patch removes bunch of warnings:
options-save.c:12004:29: warning: unquoted identifier or keyword ‘global_options’ in format [-Wformat-diag]
12004 | internal_error ("Error: global_options are modified in local context\n");
gcc/ChangeLog:
* optc-save-gen.awk: Quote error string.
An asm operand with a "VIEW_CONVERT_EXPR<struct {
[...]
}>" will output the definition of the struct as asm code. Oops.
Enable TDF_SLIM in print_mem_expr to avoid such line breaks.
for gcc/ChangeLog
* print-rtl.c (print_mem_expr): Enable TDF_SLIM in dump_flags.
ranges::copy and a number of other ranges algorithms have unwrapping
optimizations for iterators of type __normal_iterator, move_iterator and
reverse_iterator. But in the checks that guard these optimizations we
currently only test that the iterator of the iterator/sentinel pair has
the appropriate type before proceeding with the corresponding
optimization, and do not also test the sentinel type.
This breaks the testcase in this PR because this testcase constructs via
range adaptors a range whose begin() is a __normal_iterator and whose
end() is a custom sentinel type, and then performs ranges::copy on it.
From there we bogusly perform the __normal_iterator unwrapping
optimization on this iterator/sentinel pair, which immediately leads to
a constraint failure since the custom sentinel type does not model
sentinel_for<int*>.
This patch fixes this issue by refining each of the problematic checks
to also test that the iterator and sentinel types are the same before
applying the corresponding unwrapping optimization. Along the way, some
code simplifications are made.
libstdc++-v3/ChangeLog:
PR libstdc++/95578
* include/bits/ranges_algo.h (__lexicographical_compare_fn):
Also check that the iterator and sentinel have the same type before
applying the unwrapping optimization for __normal_iterator.
Split the check into two, one for the first iterator/sentinel
pair and another for second iterator/sentinel pair. Remove uses
of __niter_base, and remove uses of std::move on a
__normal_iterator.
* include/bits/ranges_algobase.h (__equal_fn): Likewise.
(__copy_or_move): Likewise. Perform similar adjustments for
the reverse_iterator and move_iterator optimizations. Inline
the checks into the if-constexprs, and use using-declarations to
make them less visually noisy. Remove uses of __niter_wrap.
(__copy_or_move_backward): Likewise.
* testsuite/25_algorithms/copy/95578.cc: New test.
* testsuite/25_algorithms/copy_backward/95578.cc: New test.
* testsuite/25_algorithms/equal/95578.cc: New test.
* testsuite/25_algorithms/lexicographical_compare/95578.cc: New test.
* testsuite/25_algorithms/move/95578.cc: New test.
* testsuite/25_algorithms/move_backward/95578.cc: New test.
A runtime system might legitimately hold in rbx a value expected to be
preserved across the call to main, but its use as a global register
variable stops main from preserving it.
for gcc/testsuite/ChangeLog
PR rtl-optimization/51447
* gcc.c-torture/execute/pr51447.c (main): Preserve call-saved
register.
build_new_method_call is supposed to be able to handle a null
arguments list pointer (when the method has no parms). There
were a couple of places where uses of the argument list pointer
were not defended against NULL.
gcc/cp/ChangeLog:
PR c++/95440
* call.c (add_candidates): Use vec_safe_length() for
testing the arguments list.
(build_new_method_call_1): Use vec_safe_is_empty() when
checking for an empty args list.
gcc/testsuite/ChangeLog:
PR c++/95440
* g++.dg/coroutines/pr95440.C: New test.
Make the memcmp optimization work for std::deque iterators and safe
iterators.
Co-authored-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
2020-06-08 François Dumont <fdumont@gcc.gnu.org>
Jonathan Wakely <jwakely@redhat.com>
* include/bits/deque.tcc (__lex_cmp_dit): New.
(__lexicographical_compare_aux1): Define overloads for deque
iterators.
* include/bits/stl_algobase.h (__lexicographical_compare::__3way):
New static member function.
(__lexicographical_compare<true>::__3way): Likewise.
(__lexicographical_compare<true>::__lc): Use __3way.
(__lexicographical_compare_aux): Rename to
__lexicographical_compare_aux1 and declare overloads for deque
iterators.
(__lexicographical_compare_aux): Define new forwarding function
that calls __lexicographical_compare_aux1 and declare new overloads
for safe iterators.
(lexicographical_compare): Do not use __niter_base on
parameters.
* include/debug/safe_iterator.tcc
(__lexicographical_compare_aux): Define overloads for safe
iterators.
* testsuite/25_algorithms/lexicographical_compare/1.cc: Add
checks with random access iterators.
* testsuite/25_algorithms/lexicographical_compare/deque_iterators/1.cc:
New test.
The following avoids leading debug stmts in BB vectorizer regions.
2020-06-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/95576
* tree-vect-slp.c (vect_slp_bb): Skip leading debug stmts.
* g++.dg/vect/pr95576.cc: New testcase.
When registering the tuple type in register_tuple_type, the
TYPE_ALIGN (tuple_type) will be changed by -fpack-struct=n. We need to
maintain natural alignment in handle_arm_sve_h.
2020-06-10 Haijian Zhang <z.zhanghaijian@huawei.com>
gcc/
PR target/95523
* config/aarch64/aarch64-sve-builtins.h
(sve_switcher::m_old_maximum_field_alignment): New member.
* config/aarch64/aarch64-sve-builtins.cc
(sve_switcher::sve_switcher): Save maximum_field_alignment in
m_old_maximum_field_alignment and clear maximum_field_alignment.
(sve_switcher::~sve_switcher): Restore maximum_field_alignment.
gcc/testsuite/
PR target/95523
* gcc.target/aarch64/sve/pr95523.c: New test.
Renamed files are listed in the following format:
M gcc/ada/Makefile.rtl
M gcc/ada/impunit.adb
R097 gcc/ada/libgnat/s-atopar.adb gcc/ada/libgnat/s-aoinar.adb
R095 gcc/ada/libgnat/s-atopar.ads gcc/ada/libgnat/s-aoinar.ads
A gcc/ada/libgnat/s-aomoar.adb
A gcc/ada/libgnat/s-aomoar.ads
So 'R' is followed by a percentage number.
contrib/ChangeLog:
* gcc-changelog/git_commit.py: Fix renamed files in
parse_git_name_status.
* gcc-changelog/test_email.py: Add test for it.
Here we ICE because a DEFERRED_PARSE expression leaked to tsubst_copy.
We create these expressions for deferred noexcept-specifiers in
cp_parser_save_noexcept; they are supposed to be re-parsed in
cp_parser_late_noexcept_specifier. In this case we never got around
to re-parsing it because the noexcept-specifier was attached to a
pointer to a function, not to a function declaration. But we should
not have delayed the parsing here in the first place; we already
avoid delaying the parsing for alias-decls, typedefs, and friend
function declarations. (Clang++ also doesn't delay the parsing
for pointers to function.)
gcc/cp/ChangeLog:
PR c++/95562
* parser.c (cp_parser_direct_declarator): Clear
CP_PARSER_FLAGS_DELAY_NOEXCEPT if the declarator kind is not
cdk_id.
gcc/testsuite/ChangeLog:
PR c++/95562
* g++.dg/cpp0x/noexcept60.C: New test.
2020-06-10 Ghjuvan Lacambre <lacambre@adacore.com>
gcc/ada/
* exp_ch3.adb (Build_Equivalent_Record_Aggregate): Return Empty
if Etype of record component has predicates.
2020-06-10 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_util.adb (Copy_And_Maybe_Dereference): Temporarily copy
the parent node of the original tree when dereferencing.
2020-06-10 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sem_warn.adb (Warn_On_Overlapping_Actuals): Add a warning when
two actuals in a call overlap, both are composite types that may
be passed by reference, and only one of them is writable.
2020-06-10 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_ch4.adb (Expand_N_In): Use an expression with actions to
insert the PE raise statement for the Unchecked_Union case.
2020-06-10 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_util.adb (Copy_And_Maybe_Dereference): New function.
(Build_Access_Record_Constraint): Use it to copy the prefix.
(Build_Actual_Array_Constraint): Likewise.
(Build_Actual_Record_Constraint): Likewise.
2020-06-10 Bob Duff <duff@adacore.com>
gcc/ada/
* sem_prag.adb (Invariant): Remove the pragma removing code. It
doesn't work to remove the pragma, because various flags are set
during Build_Invariant_Procedure_Declaration and
Build_Invariant_Procedure_Body that need to be set to avoid the
spurious warnings.
* exp_util.adb (Make_Invariant_Call): Avoid calling the
invariant-checking procedure if the body is empty. This is an
optimization.
2020-06-10 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_aggr.adb (In_Place_Assign_OK): Do not necessarily return
false for a type with discriminants.
(Convert_To_Assignments): Use Parent_Node and Parent_Kind more
consistently. In the in-place assignment case, first apply a
discriminant check if need be, and be prepared for a rewritten
aggregate as a result.
2020-06-10 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Remove
expansion of First and Last attributes.
2020-06-10 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* exp_attr.adb (Expand_N_Attribute_Reference): Remove folding
for Enum_Rep attribute.
* exp_spark.adb (Expand_SPARK_N_Attribute_Reference): Remove
duplicated code for folding Enum_Rep attribute.
* sem_attr.adb (Eval_Attribute): Relax condition for folding
Enum_Rep attribute; previously dead code is now executed when
the attribute prefix is an enumeration literal; refine type in
processing of Enum_Val.
2020-06-10 Javier Miranda <miranda@adacore.com>
gcc/ada/
* sem_ch3.adb (Analyze_Declarations): Adjust the machinery that
takes care of late body overriding of initialize, adjust,
finalize. Remove ASIS mode code.
2020-06-10 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* einfo.ads (Access_Subprogram_Wrapper): New attribute of
Subprogram_Type entities. Denotes subprogram constructed for
Access_To_Subprogram types that include pre- and postconditions.
* einfo.adb: Subprogram bodies for Access_Subprogram_Wrapper.
* exp_ch6.adb (Expand_Call): An indirect call through an
Access_To_subprogram that includes contracts is rewritten as a
call to the corresponding Access_ ubprogram_Wrapper. Handle
derived types that inherit contract from parent.
* sem_prag.adb (Build_Access_Subprogram_Wrapper): Build
subprogram declaration for subprogram that incorporates the
contracts of an Access_To_Subprogram type declaration. Build
corresponding body and attach it to freeze actions for type.
* sem_util.ads, sem_util.adb (Is_Access_Subprogram_Wrapper):
Utility that uses signature of the subprogram to determine
whether it is a generated wrapper for an Access_To_Subprogram
type.
2020-06-10 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* sem_ch13.adb (All_Membership_Choices_Static): Assert an AST
property documented in sinfo.ads and simplify an excessive
condition.
2020-06-10 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* exp_attr.adb (Expand_N_Attribute_Reference): Fix a copy-paste
mistake in comment.
* sem_res.adb (Flag_Effectively_Volatile_Objects): Fix a type in
the SPARK RM rule number.
* exp_ch4.adb, sem_util.adb: Fix style in single line comments.
2020-06-10 Justin Squirek <squirek@adacore.com>
gcc/ada/
* exp_ch3.adb (Expand_N_Object_Declaration): Add condition to
handle processing of objects initialized by a call to a function
return an anonymous access type.
* exp_ch6.adb, exp_ch6.ads
(Has_Unconstrained_Access_Discriminants): Moved to sem_util.adb
(Needs_Result_Accessibility_Level): Moved to sem_util.adb
* sem_util.adb, sem_util.ads
(Has_Unconstrained_Access_Discriminants): Moved from exp_ch6.adb
(Needs_Result_Accessibility_Level): Moved from exp_ch6.adb
* sem_res.adb (Valid_Conversion): Add condition for the special
case where the operand of a conversion is the result of an
anonymous access type
2020-06-10 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_ch6.adb (Insert_Post_Call_Actions): Deal with the context
of an if-expression and with a call written in prefixed notation.
