Ed Schonberg [Fri, 31 Jan 2020 17:28:21 +0000 (12:28 -0500)]
[Ada] Spurious error on address clause in task body
2020-06-05 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sem_ch9.adb, (Analyze_Task_Body): After analying the task
body, indicate that all local variables have no delayed aspects.
This prevents improper later calls to
Check_Aspect_At_End_Of_Declarations, that would happen when the
constructed task_procedure body (generated during expansion) is
analyzed. The legality of aspect specifications that may appear
on local declarations has already been established, and it is in
general not possible to recheck them properly during expansion,
when visibility may not be fully established.
Arnaud Charlet [Fri, 31 Jan 2020 14:18:37 +0000 (09:18 -0500)]
[Ada] AI12-0336 Meaning of Time_Offset
2020-06-05 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* libgnat/a-calfor.ads, libgnat/a-catizo.ads,
libgnat/a-catizo.adb (Local_Time_Offset, Local_Image): New.
(UTC_Time_Offset): Now a renaming of Local_Time_Offset.
Eric Botcazou [Fri, 31 Jan 2020 10:56:30 +0000 (11:56 +0100)]
[Ada] Fix assertion failure on double rederivation of private type
2020-06-05 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_ch3.adb (Available_Full_View): New function returning
either the full or the underlying full view.
(Build_Full_Derivation): Add guard for the full view.
(Copy_And_Build): Retrieve the underlying full view, if any,
also if deriving a completion.
(Build_Derived_Private_Type): Use Available_Full_View throughout
to decide whether a full derivation must be done.
* einfo.adb, einfo.ads, exp_util.adb: Remove Invariants_Ignored
flag.
* sem_prag.adb (Invariant): Instead of setting a flag to be
checked elsewhere, remove the pragma as soon as it is analyzed
and checked for legality.
Arnaud Charlet [Thu, 30 Jan 2020 08:09:19 +0000 (03:09 -0500)]
[Ada] Minor wording changes wrt Ada 202x
2020-06-05 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* par-ch3.adb, par-ch4.adb, scng.adb, sem_aggr.adb,
sem_ch10.adb, sem_ch12.adb, sem_prag.adb: Update wording: change
Ada_2020 to Ada 2020 in comments and mention -gnat2020 instead
of -gnatX switch.
Richard Biener [Fri, 5 Jun 2020 08:13:27 +0000 (10:13 +0200)]
tree-optimization/95539 - fix SLP_TREE_REPRESENTATIVE vs. dr_info
This fixes a disconnect between the stmt_info used for dr_info
analysis and the one in SLP_TREE_REPRESENTATIVE with a temporary
workaround.
2020-06-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/95539
* tree-vect-data-refs.c
(vect_slp_analyze_and_verify_instance_alignment): Use
SLP_TREE_REPRESENTATIVE for the data-ref check.
* tree-vect-stmts.c (vectorizable_load): Reset stmt_info
back to the first scalar stmt rather than the
SLP_TREE_REPRESENTATIVE to match previous behavior.
Fei Yang [Fri, 5 Jun 2020 09:34:59 +0000 (10:34 +0100)]
expand: Simplify removing subregs when expanding a copy [PR95254]
In rtl expand, if we have a copy that matches one of the following patterns:
(set (subreg:M1 (reg:M2 ...)) (subreg:M1 (reg:M2 ...)))
(set (subreg:M1 (reg:M2 ...)) (mem:M1 ADDR))
(set (mem:M1 ADDR) (subreg:M1 (reg:M2 ...)))
(set (subreg:M1 (reg:M2 ...)) (constant C))
where mode M1 is equal in size to M2, try to detect whether the mode change
involves an implicit round trip through memory. If so, see if we can avoid
that by removing the subregs and doing the move in mode M2 instead.
2020-06-05 Felix Yang <felix.yang@huawei.com>
gcc/
PR target/95254
* expr.c (emit_move_insn): Check src and dest of the copy to see
if one or both of them are subregs, try to remove the subregs when
innermode and outermode are equal in size and the mode change involves
an implicit round trip through memory.
gcc/testsuite/
PR target/95254
* gcc.target/aarch64/pr95254.c: New test.
* gcc.target/i386/pr67609.c: Check "movq\t%xmm0" instead of "movdqa".
Jakub Jelinek [Fri, 5 Jun 2020 08:44:23 +0000 (10:44 +0200)]
ix86: Improve __builtin_c[lt]z followed by extension [PR95535]
In January I've added patterns to optimize SImode -> DImode sign or zero
extension of __builtin_popcount, this patch does the same for
__builtin_c[lt]z. Like most other instructions, the [tl]zcntl instructions
clear the upper 32 bits of the destination register and as the instructions
only result in values 0 to 32 inclusive, both sign and zero extensions
behave the same.
2020-06-05 Jakub Jelinek <jakub@redhat.com>
PR target/95535
* config/i386/i386.md (*ctzsi2_zext, *clzsi2_lzcnt_zext): New
define_insn_and_split patterns.
(*ctzsi2_zext_falsedep, *clzsi2_lzcnt_zext_falsedep): New
define_insn patterns.
* gcc.target/i386/pr95535-1.c: New test.
* gcc.target/i386/pr95535-2.c: New test.
Jonathan Wakely [Fri, 22 May 2020 06:22:50 +0000 (07:22 +0100)]
Add new/delete to struct occurence
This adds an example how to use new/delete operators to pool
allocated objects.
2020-06-04 Jonathan Wakely <jwakely@redhat.com>
* alloc-pool.h (object_allocator::remove_raw): New.
* tree-ssa-math-opts.c (struct occurrence): Use NSMDI.
(occurrence::occurrence): Add.
(occurrence::~occurrence): Likewise.
(occurrence::new): Likewise.
(occurrence::delete): Likewise.
(occ_new): Remove.
(insert_bb): Use new occurence (...) instead of occ_new.
(register_division_in): Likewise.
(free_bb): Use delete occ instead of manually removing
from the pool.
Richard Biener [Thu, 4 Jun 2020 11:44:58 +0000 (13:44 +0200)]
middle-end/95493 - bogus MEM_ATTRS for variable array access
The following patch avoids keeping the inherited MEM_ATTRS when
set_mem_attributes_minus_bitpos is called with a variable ARRAY_REF.
The inherited ones may not reflect the correct offset and neither
does the updated alias-set match the inherited MEM_EXPR. This all
ends up confusing path-based alias-analysis, causing wrong-code.
The fix is to stop not adopting a MEM_EXPR for certain kinds of
expressions and instead handle everything we can. There's still
the constant kind trees case which I'm too lazy to look into right
now. I did refrain from adding SSA_NAME there and instead avoided
calling set_mem_attributes_minus_bitpos when debug expression
expansion ended up expanding a SSA definition RHS which should
already have taken care of setting the appropriate MEM_ATTRS.
2020-06-04 Richard Biener <rguenther@suse.de>
PR middle-end/95493
* cfgexpand.c (expand_debug_expr): Avoid calling
set_mem_attributes_minus_bitpos when we were expanding
an SSA name.
* emit-rtl.c (set_mem_attributes_minus_bitpos): Remove
ARRAY_REF special-casing, add CONSTRUCTOR to the set of
special-cases we do not want MEM_EXPRs for. Assert
we end up with reasonable MEM_EXPRs.
Jonathan Wakely [Thu, 4 Jun 2020 22:20:49 +0000 (23:20 +0100)]
libstdc++: Remove workarounds for constrained nested class templates
With PR c++/92078 and PR c++/92103 both fixed, nested class templates
can now be constrained. That means a number of namespace-scope helpers
can be moved to the class scope, so they're only visible where they're
needed.
* include/bits/iterator_concepts.h (__detail::__ptr, __detail::__ref)
(__detail::__cat, __detail::__diff): Move to class scope in the
relevant __iterator_traits specializations.
(__iterator_traits<>): Use nested class templates instead of ones from
namespace __detail.
* include/bits/stl_iterator.h (__detail::__common_iter_ptr): Move to
class scope in iterator_traits<common_iterator<I, S>>.
(iterator_traits<common_iterator<I, S>>): Use nested class template
instead of __detail::__common_iter_ptr.
Martin Sebor [Thu, 4 Jun 2020 22:06:10 +0000 (16:06 -0600)]
Implement a solution for PR middle-end/10138 and PR middle-end/95136.
PR middle-end/10138 - warn for uninitialized arrays passed as const arguments
PR middle-end/95136 - missing -Wuninitialized on an array access with a variable offset
François Dumont [Wed, 22 Jan 2020 17:21:28 +0000 (18:21 +0100)]
libstdc++: Specialize copy/copy_n for istreambuf_iterator and deque iterators
Add __copy_n_a overloads for std::deque iterators to replace with C memmove
when possible. Expose std::copy_n implementation details in pre-C++11 modes
and use it for std::copy overloads.
The code in constexpr for looking up the actual type of the object and then
getting the virtual function from there broke for both of these tests: for
16, it assumed incorrectly that the DECL_VINDEX would apply to the most
derived type's vtable; for 17, it failed to consider that during
construction the base subobject is treated as being of the base type.
Fixed by just doing constant evaluation of the expression that looks up the
function in the vtable. This means that a virtual call will involve loading
the vptr, so we will reject some calls through non-constexpr variables that
we previously accepted, but this seems appropriate to me. None of our
testcases were affected.
Jason Merrill [Thu, 4 Jun 2020 03:50:06 +0000 (23:50 -0400)]
c++: Fix FE devirt with diamond inheritance [PR95158]
This started breaking in GCC 8 because of the fix for PR15272; after that
change, we (correctly) remember the lookup from template parsing time that
found Base::foo through the non-dependent MiddleB base, and so we overlook
the overrider in MiddleA. But given that, the devirtualization condition
from the fix for PR59031 is insufficient; we know that d has to be a
Derived, and we found Base::foo in Base, but forcing a non-virtual call
gets the wrong function.
Fixed by removing the PR59031 code that the PR67184 patch moved to
build_over_call, and instead looking up the overrider in BINFO_VIRTUALS.
gcc/cp/ChangeLog:
PR c++/95158
* class.c (lookup_vfn_in_binfo): New.
* call.c (build_over_call): Use it.
* cp-tree.h (resolves_to_fixed_type_p): Add default argument.
(lookup_vfn_in_binfo): Declare.
gcc/testsuite/ChangeLog:
PR c++/95158
* g++.dg/template/virtual5.C: New test.
Iain Sandoe [Thu, 4 Jun 2020 16:14:37 +0000 (17:14 +0100)]
coroutines: Fix missed ramp function return copy elision [PR95346].
Confusingly, "get_return_object ()" can do two things:
- Firstly it can provide the return object for the ramp function (as
the name suggests).
- Secondly if the type of the ramp function is different from that
of the get_return_object call, this is used as a single parameter
to a CTOR for the ramp's return type.
In the first case we can rely on finish_return_stmt () to do the
necessary processing for copy elision.
In the second case, we should have passed a prvalue to the CTOR as
per the standard comment, but I had omitted the rvalue () call. Fixed
thus.
gcc/cp/ChangeLog:
PR c++/95346
* coroutines.cc (morph_fn_to_coro): Ensure that the get-
return-object is constructed correctly; When it is not the
final return value, pass it to the CTOR of the return type
as an rvalue, per the standard comment.
gcc/testsuite/ChangeLog:
PR c++/95346
* g++.dg/coroutines/pr95346.C: New test.
Thomas Schwinge [Thu, 4 Jun 2020 14:13:35 +0000 (16:13 +0200)]
[OpenACC 'exit data'] Evaluate 'copyfrom' individually for 'GOMP_MAP_STRUCT' entries
Currently, we don't at all evaluate 'copyfrom' for 'GOMP_MAP_STRUCT' entries.
Fix this by copying/adapting the corresponding non-'GOMP_MAP_STRUCT' code.
libgomp/
* oacc-mem.c (goacc_exit_data_internal) <GOMP_MAP_STRUCT>:
Evaluate 'copyfrom' individually for each entry.
* testsuite/libgomp.oacc-c-c++-common/struct-1.c: Update.
Thomas Schwinge [Thu, 4 Jun 2020 14:01:07 +0000 (16:01 +0200)]
[OpenACC 'exit data'] Evaluate 'finalize' individually for 'GOMP_MAP_STRUCT' entries
Currently, we don't at all evaluate 'finalize' for 'GOMP_MAP_STRUCT' entries.
Fix this by copying/adapting the corresponding non-'GOMP_MAP_STRUCT' code.
libgomp/
* oacc-mem.c (goacc_exit_data_internal) <GOMP_MAP_STRUCT>:
Evaluate 'finalize' individually for each entry.
* testsuite/libgomp.oacc-c-c++-common/struct-1.c: New file.
* testsuite/libgomp.oacc-c-c++-common/struct-refcount-1.c: Remove
file.
Thomas Schwinge [Wed, 6 May 2020 08:05:49 +0000 (10:05 +0200)]
'libgomp.oacc-fortran/{error_,}stop-{1,2,3}.f': initialize before the checkpoint
If, for example, GCC is configured such that 'libgomp-plugin-nvptx.so.1'
dynamically links against 'libcuda.so.1', but testing is run on a system where
there is no 'libcuda.so.1', this produces output such as:
PASS: libgomp.oacc-fortran/error_stop-1.f -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 -foffload=disable -O0 (test for excess errors)
PASS: libgomp.oacc-fortran/error_stop-1.f -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 -foffload=disable -O0 execution test
FAIL: libgomp.oacc-fortran/error_stop-1.f -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 -foffload=disable -O0 output pattern test, is CheCKpOInT
libgomp: while loading libgomp-plugin-nvptx.so.1: libcuda.so.1: cannot open shared object file: No such file or directory
ERROR STOP
Error termination. Backtrace: [...]
, should match CheCKpOInT(
|
|^M)+ERROR STOP (
|
|^M)+Error termination.*
..., where after 'CheCKpOInT' we got 'libgomp: while loading [...]' injected
before the expected 'ERROR STOP'.
Add processing STRICT_LOW_PART for matched reloads.
2020-06-04 Vladimir Makarov <vmakarov@redhat.com>
PR middle-end/95464
* lra.c (lra_emit_move): Add processing STRICT_LOW_PART.
* lra-constraints.c (match_reload): Use STRICT_LOW_PART in output
reload if the original insn has it too.
Richard Biener [Thu, 4 Jun 2020 15:26:36 +0000 (16:26 +0100)]
aarch64: PR target/95526: Fix gimplification of varargs
This patch fixes a latent bug exposed by eb72dc663e9070b281be83a80f6f838a3a878822 in the aarch64 backend that was
causing wrong codegen and several testsuite failures. See the discussion
on the bug for details.
Bootstrapped and regtested on aarch64-linux-gnu. Cleaned up several
failing tests and no new fails introduced.
2020-06-04 Richard Biener <rguenther@suse.de>
gcc/:
* config/aarch64/aarch64.c (aarch64_gimplify_va_arg_expr):
Ensure that tmp_ha is marked TREE_ADDRESSABLE.
Martin Jambor [Thu, 4 Jun 2020 15:03:27 +0000 (17:03 +0200)]
ipa-sra: Do not remove statements necessary because of non-call EH (PR 95113)
PR 95113 revealed that when reasoning about which parameters are dead,
IPA-SRA does not perform the same check related to non-call exceptions
as tree DCE. It most certainly should and so this patch moves the
condition used in tree-ssa-dce.c into a separate predicate (in
tree-eh.c) and uses it from both places.
gcc/ChangeLog:
2020-05-27 Martin Jambor <mjambor@suse.cz>
PR ipa/95113
* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Move non-call
exceptions check to...
* tree-eh.c (stmt_unremovable_because_of_non_call_eh_p): ...this
new function.
* tree-eh.h (stmt_unremovable_because_of_non_call_eh_p): Declare it.
* ipa-sra.c (isra_track_scalar_value_uses): Use it. New parameter
fun.
[ARM]: Correct the grouping of operands in MVE vector scatter store intrinsics (PR94735).
The operands in RTL patterns of MVE vector scatter store intrinsics are wrongly grouped,
because of which few vector loads and stores instructions are wrongly getting optimized
out with -O2.
A new predicate "mve_scatter_memory" is defined in this patch, this predicate returns TRUE on
matching: (mem(reg)) for MVE scatter store intrinsics.
This patch fixes the issue by adding define_expand pattern with "mve_scatter_memory" predicate
and calls the corresponding define_insn by passing register_operand as first argument.
This register_operand is extracted from the operand with "mve_scatter_memory" predicate in
define_expand pattern.
Richard Biener [Thu, 4 Jun 2020 12:59:16 +0000 (14:59 +0200)]
add vect_get_slp_vect_def
This adds vect_get_slp_vect_def to get at a SLP nodes vectorized def,
abstracting away the details. It also fixes one stray failure to
use SLP_TREE_REPRESENTATIVE.
2020-05-04 Richard Biener <rguenther@suse.de>
* tree-vectorizer.h (vect_get_slp_vect_def): Declare.
* tree-vect-loop.c (vect_create_epilog_for_reduction): Use it.
* tree-vect-stmts.c (vect_transform_stmt): Likewise.
(vect_is_simple_use): Use SLP_TREE_REPRESENTATIVE.
* tree-vect-slp.c (vect_get_slp_vect_defs): Fold into single
use ...
(vect_get_slp_defs): ... here.
(vect_get_slp_vect_def): New function.
Jonathan Wakely [Thu, 4 Jun 2020 12:52:21 +0000 (13:52 +0100)]
libstdc++: Make std::copy_n work with negative and non-integral sizes
Since it was added in C++11, std::copy_n and std::ranges::copy_n should
do nothing given a negative size, but for random access iterators we add
the size to the iterator, possibly resulting in undefined behaviour.
Also, C++20 clarified that std::copy_n requires the Size type to be
convertible to an integral type. We previously assumed that it could be
directly used in arithmetic expressions, without conversion to an
integral type.
This also fixes a bug in the random_access_iterator_wrapper helper adds
some convenience aliases for using the iterator wrappers.
libstdc++-v3/ChangeLog:
* include/bits/ranges_algobase.h (__copy_n_fn): Only call
ranges::copy for positive values.
* include/bits/stl_algo.h (copy_n): Convert Size argument to an
integral type and only call __copy_n for positive values.
* testsuite/util/testsuite_iterators.h
(random_access_iterator_wrapper::operator+=): Fix range check for
negative values.
(output_container, input_container, forward_container)
(bidirectional_container, random_access_container): New alias
templates.
* testsuite/25_algorithms/copy_n/5.cc: New test.
Richard Biener [Thu, 4 Jun 2020 12:17:21 +0000 (14:17 +0200)]
Simplify SLP code wrt SLP_TREE_DEF_TYPE
The following removes the ugly pushing of SLP_TREE_DEF_TYPE to
stmt_infos and instead makes sure to handle invariants fully
in vect_is_simple_use plus adjusting a few places I refrained
from touching when enforcing vector types for them.
It also simplifies building SLP nodes with all external operands
from scalars by not doing that in the parent but instead not
building those from the start. That also gets rid of
vect_update_all_shared_vectypes.
2020-06-04 Richard Biener <rguenther@suse.de>
* tree-vect-slp.c (vect_update_all_shared_vectypes): Remove.
(vect_build_slp_tree_2): Simplify building all external op
nodes from scalars.
(vect_slp_analyze_node_operations): Remove push/pop of
STMT_VINFO_DEF_TYPE.
(vect_schedule_slp_instance): Likewise.
* tree-vect-stmts.c (ect_check_store_rhs): Pass in the
stmt_info, use the vect_is_simple_use overload combining
SLP and stmt_info analysis.
(vect_is_simple_cond): Likewise.
(vectorizable_store): Adjust.
(vectorizable_condition): Likewise.
(vect_is_simple_use): Fully handle invariant SLP nodes
here. Amend stmt_info operand extraction with COND_EXPR
and masked stores.
* tree-vect-loop.c (vectorizable_reduction): Deal with
COND_EXPR representation ugliness.
liuhongt [Fri, 29 May 2020 05:38:49 +0000 (13:38 +0800)]
Fix zero-masking for vcvtps2ph when dest operand is memory.
When dest is memory, zero-masking is not valid, only merging-masking is available,
2020-06-24 Hongtao Liu <hongtao.liu@inte.com>
gcc/ChangeLog:
PR target/95254
* config/i386/sse.md (*vcvtps2ph_store<merge_mask_name>):
Refine from *vcvtps2ph_store<mask_name>.
(vcvtps2ph256<mask_name>): Refine constraint from vm to v.
(<mask_codefor>avx512f_vcvtps2ph512<mask_name>): Ditto.
(*vcvtps2ph256<merge_mask_name>): New define_insn.
(*avx512f_vcvtps2ph512<merge_mask_name>): Ditto.
* config/i386/subst.md (merge_mask): New define_subst.
(merge_mask_name): New define_subst_attr.
(merge_mask_operand3): Ditto.
gcc/testsuite/ChangeLog:
* gcc.target/i386/avx512f-vcvtps2ph-pr95254.c: New test.
* gcc.target/i386/avx512vl-vcvtps2ph-pr95254.c: Ditto.
Ed Schonberg [Fri, 24 Jan 2020 19:14:14 +0000 (14:14 -0500)]
[Ada] Ada_2020: contracts for formal subprograms
2020-06-04 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sem_ch12.adb (Build_Suprogram_Body_Wrapper,
Build_Subprogram_Decl_Wrapper): New suprograms, to create the
wrappers needed to implement contracts on formsl subprograms at
the point of instantiation.
(Build_Subprogram_Wrappers): New subprogram within
Analyze_Associations, calls the above when the formal subprogram
has contracts, and expansion is enabled.
(Instantiate_Formal_Subprogram): If the actual is not an entity,
such as a function attribute, or a synchronized operation,
create a function with an internal name and call it within the
wrapper.
(Analyze_Generic_Formal_Part): Analyze contracts at the end of
the list of formal declarations.
* sem_prag.adb (Analyze_Pre_Post_Condtion): In Ada_2020 the
aspect and corresponding pragma can appear on a formal
subprogram declaration.
(Find_Related_Declaration_Or_Body): Ditto.
Bob Duff [Tue, 28 Jan 2020 20:06:41 +0000 (15:06 -0500)]
[Ada] Put_Image attribute
2020-06-04 Bob Duff <duff@adacore.com>
gcc/ada/
* libgnat/a-stobbu.adb, libgnat/a-stobbu.ads,
libgnat/a-stobfi.adb, libgnat/a-stobfi.ads,
libgnat/a-stoubu.adb, libgnat/a-stoubu.ads,
libgnat/a-stoufi.adb, libgnat/a-stoufi.ads,
libgnat/a-stoufo.adb, libgnat/a-stoufo.ads,
libgnat/a-stouut.adb, libgnat/a-stouut.ads,
libgnat/a-stteou.ads, libgnat/s-putaim.adb,
libgnat/s-putaim.ads, libgnat/s-putima.adb, libgnat/s-putima.ads
(Ada.Strings.Text_Output and children, System.Put_Images): New
runtime support for Put_Image.
* gcc-interface/Make-lang.in (GNAT_ADA_OBJS): Add
exp_put_image.o.
* exp_put_image.adb, exp_put_image.ads: New compiler package
that generates calls to runtime routines that implement
Put_Image.
* Makefile.rtl: Add object files for Ada.Strings.Text_Output and
children and System.Put_Images.
* aspects.adb: Simplify initialization of Canonical_Aspect.
* aspects.ads: Improve documentation. Add Aspect_Put_Image.
* exp_attr.adb: Add support for Put_Image, by calling routines
in Exp_Put_Image.
* sem_util.adb (Is_Predefined_Dispatching_Operation): Return
True for new TSS_Put_Image operation.
* exp_ch3.adb: For tagged types, build a dispatching
TSS_Put_Image operation by calling routines in Exp_Put_Image.
* exp_disp.adb, exp_disp.ads: Make TSS_Put_Image be number 10,
adjusting other operations' numbers after 10. We choose 10
because that's the last number shared by all runtimes.
* exp_strm.adb: Use named notation as appropriate.
* exp_cg.adb, exp_tss.ads: Add TSS_Put_Image.
* libgnat/a-tags.ads: Modify Max_Predef_Prims for the new
TSS_Put_Image.
* impunit.adb: Add new runtime packages.
* rtsfind.adb, rtsfind.ads: Add support for
Ada.Strings.Text_Output, Ada.Strings.Text_Output.Utils, and
System.Put_Images.
* sem_attr.adb: Error checking for Put_Image calls.
* sem_ch12.adb (Valid_Default_Attribute): Support for passing
Put_Image as a generic formal parameter.
* sem_ch13.adb: Analysis of Put_Image aspect. Turn it into a
Put_Image attribute definition clause.
* sem_ch8.adb (Analyze_Subprogram_Renaming): Support for
renaming of the Put_Image attribute.
* snames.adb-tmpl: Fix comments.
* snames.ads-tmpl (Name_Put_Image): New Name_Id.
(Attribute_Put_Image): New Attribute_Id.
* tbuild.adb, tbuild.ads (Make_Increment): New utility.
Eric Botcazou [Mon, 27 Jan 2020 11:50:23 +0000 (12:50 +0100)]
[Ada] Alignment clause ignored on completion derived from private type
2020-06-04 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_attr.adb (xpand_N_Attribute_Reference) <Input>: Call
Find_Inherited_TSS to look up the Stream_Read TSS.
<Output>: Likewise for the Stream_Write TSS.
* exp_ch7.adb (Make_Final_Call): Call Underlying_Type on
private types to account for underlying full views.
* exp_strm.ads (Build_Record_Or_Elementary_Input_Function):
Remove Use_Underlying parameter.
* exp_strm.adb (Build_Record_Or_Elementary_Input_Function):
Likewise and adjust accordingly.
* exp_tss.adb (Find_Inherited_TSS): Deal with full views.
Call Find_Inherited_TSS recursively on the parent type if
the base type is a derived type.
* sem_ch13.adb (Analyze_Attribute_Definition_Clause): Take
into account underlying full views for derived types.
* sem_ch3.adb (Copy_And_Build): Look up the underlying full
view only for a completion. Be prepared for private types.
(Build_Derived_Private_Type): Build an underlying full view
for a completion in the general case too.
Gary Dismukes [Fri, 24 Jan 2020 19:11:47 +0000 (14:11 -0500)]
[Ada] Implement AI12-0275 (Make subtype_mark optional in object renamings)
2020-06-04 Gary Dismukes <dismukes@adacore.com>
gcc/ada/
* par-ch3.adb (P_Identifier_Declarations): Add parsing of object
renamings that have neither a subtype_mark nor an
access_definition. Issue an error if the version is earlier than
Ada_2020, and suggest using -gnatX.
* sem_ch8.adb (Analyze_Object_Renaming): Handle
object_renaming_declarations that don't have an explicit
subtype. Errors are issued when the name is inappropriate or
ambiguous, and otherwise the Etype of the renaming entity is set
from the Etype of the renamed object.
* sem_util.adb (Has_Null_Exclusion): Allow for the case of no
subtype given in an N_Object_Renaming_Declaration.
* sprint.adb (Sprint_Node_Actual): Handle printing of
N_Object_Renaming_Declarations that are specified without an
explicit subtype.
Ed Schonberg [Thu, 23 Jan 2020 16:00:46 +0000 (11:00 -0500)]
[Ada] Incorrect source line range on subprogram body with contract
2020-06-04 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sinput.adb (Sloc_Range): Ignore node in the tree if it appears
in a unit different from that of the node whose Sloc range we
are computing. This is necessary when computing the source range
of a subprogram body whose declaration includes a pre- or
postcondition, because declaration and body may appear in
different units, and the expanded code for the body includes
copies of the contract code.
Eric Botcazou [Thu, 23 Jan 2020 20:52:19 +0000 (21:52 +0100)]
[Ada] Set convention and inlined flag on default null procedure
2020-06-04 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_attr.adb (Resolve_Attribute) <Access>: Do not generate
the secondary message about a missing pragma if the convention
of the prefix is Intrinsic.
* sem_ch12.adb (Instantiate_Formal_Subprogram): Only set the
Convention and the Is_Inlined flag on a null procedure.
Justin Squirek [Thu, 23 Jan 2020 18:12:11 +0000 (13:12 -0500)]
[Ada] Missing accessibility check on access discriminant in extended return
2020-06-04 Justin Squirek <squirek@adacore.com>
gcc/ada/
* sem_ch6.adb (Check_Return_Obj_Accessibility): Change to
Check_Return_Construct_Accessibility to better reflect its
purpose. Add loop to properly obtain the object declaration
from an expanded extended return statement and add calls to get
the original node for associated values. Also, avoid checks when
the return statement being examined comes from an internally
generated function.
Eric Botcazou [Mon, 20 Jan 2020 10:24:07 +0000 (11:24 +0100)]
[Ada] Small tweak to special handling of private index types
2020-06-04 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_ch3.adb (Array_Type_Declaration): Apply special handling
of private index types to generic packages and restrict it to
index types defined in the current scope.
Arnaud Charlet [Wed, 22 Jan 2020 11:43:54 +0000 (06:43 -0500)]
[Ada] New procedure Register_Global_Unhandled_Action
2020-06-04 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* libgnat/a-exextr.adb (Global_Unhandled_Action): New global
variable.
(Notify_Exception): Take into account Global_Unhandled_Action
and fix latent race condition.
(Exception_Action): Mark Favor_Top_Level so that variables can
be atomic.
(Global_Action): Mark atomic to remove the need for a lock.
* libgnat/g-excact.ads, libgnat/g-excact.adb
(Register_Global_Unhandled_Action): New procedure.
(Register_Global_Action): Remove lock.
* libgnat/s-stalib.ads (Raise_Action): Mark Favor_Top_Level to
be compatible with Exception_Action.
* sem_warn.adb (Warn_On_Unreferenced_Entity): Fix logic wrt
Volatile entities and entities with an address clause: the code
did not match the comment/intent.
Steve Baird [Sat, 18 Jan 2020 06:10:13 +0000 (22:10 -0800)]
[Ada] Avoid buffer overflow in Long_Long_Float_Text_IO
2020-06-04 Steve Baird <baird@adacore.com>
gcc/ada/
* libgnat/s-imgrea.ads: Declare a named number
Max_Real_Image_Length with value 5200. Provide a comment
explaining why this value was chosen.
* libgnat/s-imgrea.adb (Set_Image_Real): Increase the upper
bound of the local String variable Digs to
Max_Real_Image_Length.
* libgnat/a-tiflau.adb (Put): Increase the upper bound of the
local String variable Buf to Max_Real_Image_Length.
(Puts): Increase the upper bound of the local String variable
Buf to Max_Real_Image_Length.
Arnaud Charlet [Mon, 20 Jan 2020 11:07:09 +0000 (06:07 -0500)]
[Ada] Continuation of "Get rid of more references to Universal_Integer"
2020-06-04 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* libgnat/s-atopar.adb, libgnat/s-atopex.adb: Use Object_Size
instead of Size, otherwise many derived types will be rejected
(e.g. a type with a 14 bits 'Size and a 16 bits 'Object_Size).
Eric Botcazou [Sat, 18 Jan 2020 22:40:05 +0000 (23:40 +0100)]
[Ada] Fix fallout of cleanup to Has_Private_View mechanism
2020-06-04 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_ch12.adb (Check_Generic_Actuals): Also restore the proper
views of the actuals of the parent instances if the formals are
used as actuals of the children.
(Instantiate_Type): Add comment.
Hao Liu [Thu, 4 Jun 2020 08:28:37 +0000 (16:28 +0800)]
cselim: Extend to check non-trapping for more references [PR89430]
If there is a dominating store, a store to the same reference can not be
trapped. But previously, it only supports such check on MEM_REFs.
So this patch extends it to support ARRAY_REFs and COMPONENT_REFs.
This patch also supports a special case: if there is a dominating load of
local variable without address escape, a store is not trapped, as local
stack is always writable. Other loads are ignored for simplicity, as they
don't help to check if a store can be trapped (the memory may be read-only).
gcc/ChangeLog:
PR tree-optimization/89430
* tree-ssa-phiopt.c
(struct name_to_bb): Rename to ref_to_bb; add a new field exp;
remove ssa_name_ver, store, offset fields.
(struct ssa_names_hasher): Rename to refs_hasher; update functions.
(class nontrapping_dom_walker): Rename m_seen_ssa_names to m_seen_refs.
(nontrapping_dom_walker::add_or_mark_expr): Extend to support ARRAY_REFs
and COMPONENT_REFs.
Andreas Schwab [Fri, 15 May 2020 15:38:30 +0000 (17:38 +0200)]
Fix missing assemble_external in ASM_OUTPUT_FDESC
When TARGET_VTABLE_USES_DESCRIPTORS is defined then function pointers in
the vtable are output by ASM_OUTPUT_FDESC. The only current user of
this is ia64, but its implementation of ASM_OUTPUT_FDESC lacks a call to
assemble_external. Thus if there is no other reference to the function
the weak declaration for it will be missing.
Jakub Jelinek [Thu, 4 Jun 2020 07:09:01 +0000 (09:09 +0200)]
c++: Reject some further reinterpret casts in constexpr [PR82304, PR95307]
cxx_eval_outermost_constant_expr had a check for reinterpret_casts from
pointers (well, it checked from ADDR_EXPRs) to integral type, but that
only caught such cases at the toplevel of expressions.
As the comment said, it should be done even inside of the expressions,
but at the point of the writing e.g. pointer differences used to be a
problem. We now have POINTER_DIFF_EXPR, so this is no longer an issue.
Had to do it just for CONVERT_EXPR, because the FE emits NOP_EXPR casts
from pointers to integrals in various spots, e.g. for the PMR & 1 tests,
though on NOP_EXPR we have the REINTERPRET_CAST_P bit that we do check,
while on CONVERT_EXPR we don't.
2020-06-04 Jakub Jelinek <jakub@redhat.com>
PR c++/82304
PR c++/95307
* constexpr.c (cxx_eval_constant_expression): Diagnose CONVERT_EXPR
conversions from pointer types to arithmetic types here...
(cxx_eval_outermost_constant_expr): ... instead of here.
* g++.dg/template/pr79650.C: Expect different diagnostics and expect
it on all lines that do pointer to integer casts.
* g++.dg/cpp1y/constexpr-shift1.C: Expect different diagnostics.
* g++.dg/cpp1y/constexpr-82304.C: New test.
* g++.dg/cpp0x/constexpr-95307.C: New test.
Mark Wielaard [Sat, 23 May 2020 22:44:22 +0000 (00:44 +0200)]
Provide diagnostic hints for missing C++ cinttypes string constants.
When reporting an error in cp_parser and we notice a string literal
followed by an unknown name check whether there is a known standard
header containing a string macro with the same name, then add a hint
to the error message to include that header.
gcc/c-family/ChangeLog:
* known-headers.cc (get_cp_stdlib_header_for_string_macro_name):
New function.
* known-headers.h (get_cp_stdlib_header_for_string_macro_name):
New function declaration.
gcc/cp/ChangeLog:
* parser.c (cp_lexer_safe_previous_token): New function.
(cp_parser_error_1): Add name_hint if the previous token is
a string literal and next token is a CPP_NAME and we have a
missing header suggestion for the name.
Mark Wielaard [Thu, 21 May 2020 23:10:50 +0000 (01:10 +0200)]
Provide diagnostic hints for missing C inttypes.h string constants.
This adds a flag to c_parser so we know when we were trying to
construct a string literal. If there is a parse error and we were
constructing a string literal, and the next token is an unknown
identifier name, and we know there is a standard header that defines
that name as a string literal, then add a missing header hint to
the error messsage.
The list of macro names are also used when providing a hint for
missing identifiers.
gcc/c-family/ChangeLog:
* known-headers.cc (get_string_macro_hint): New function.
(get_stdlib_header_for_name): Use get_string_macro_hint.
(get_c_stdlib_header_for_string_macro_name): New function.
* known-headers.h (get_c_stdlib_header_for_string_macro_name):
New function declaration.
gcc/c/ChangeLog:
* c-parser.c (struct c_parser): Add seen_string_literal
bitfield.
(c_parser_consume_token): Reset seen_string_literal.
(c_parser_error_richloc): Add name_hint if seen_string_literal
and next token is a CPP_NAME and we have a missing header
suggestion for the name.
(c_parser_string_literal): Set seen_string_literal.
gcc/testsuite/ChangeLog:
* gcc.dg/spellcheck-inttypes.c: New test.
* g++.dg/spellcheck-inttypes.C: Likewise.
Mark Wielaard [Sun, 24 May 2020 16:01:51 +0000 (18:01 +0200)]
diagnostics: Add function call parens matching to c_parser.
The C++ parser already tracks function call parens matching, but the C
parser doesn't. This adds the same functionality to the C parser and adds
a testcase showing the C++ and C parser matching function call parens
in an error message.
gcc/c/ChangeLog:
* c-parser.c (c_parser_postfix_expression_after_primary): Add
scope with matching_parens after CPP_OPEN_PAREN.
gcc/testsuite/ChangeLog:
* c-c++-common/missing-close-func-paren.c: New test.
Aaron Sawdey [Tue, 2 Jun 2020 20:48:01 +0000 (15:48 -0500)]
identify lfs prefixed case PR95347
The same problem also arises for plfs where prefixed_load_p()
doesn't recognize it so we get just lfs in the asm output
with an @pcrel address.
PR target/95347
* config/rs6000/rs6000.c (is_stfs_insn): Rename to
is_lfs_stfs_insn and make it recognize lfs as well.
(prefixed_store_p): Use is_lfs_stfs_insn().
(prefixed_load_p): Use is_lfs_stfs_insn() to recognize lfs.
Patrick Palka [Wed, 3 Jun 2020 20:37:24 +0000 (16:37 -0400)]
c++: more constrained nested partial specialization
When checking that a constrained partial specialization is more
constrained than the primary template, we pass only the innermost level
of generic template arguments to strictly_subsumes. This leads to us
doing a nonsensical substitution from normalize_concept_check if the
full set of template arguments has multiple levels, and it ultimately
causes strictly_subsumes to sometimes erroneously return false as in the
testcase below.
gcc/cp/ChangeLog:
* pt.c (process_partial_specialization): Pass the full set of
generic template arguments to strictly_subsumes.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-partial-spec8.C: New test.
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