Gaius Mulley [Thu, 21 Mar 2024 18:30:23 +0000 (18:30 +0000)]
PR modula2/114418 missing import of TSIZE from system causes ICE
This patch detects whether the symbol func is NulSym before generating
an error and if so just uses the token location and fixed string to
generate an error message.
gcc/m2/ChangeLog:
PR modula2/114418
* gm2-compiler/PCSymBuild.mod (PushConstFunctionType): Check
func against NulSym and issue an error.
gcc/testsuite/ChangeLog:
PR modula2/114418
* gm2/pim/fail/missingtsize.mod: New test.
* gm2/pim/fail/missingtsize2.mod: New test.
Harald Anlauf [Wed, 20 Mar 2024 19:59:24 +0000 (20:59 +0100)]
Fortran: improve array component description in runtime error message [PR30802]
Runtime error messages for array bounds violation shall use the following
scheme for a coherent, abridged description of arrays or array components
of derived types:
(1) If x is an ordinary array variable, use "x"
(2) if z is a DT scalar and x an array component at level 1, use "z%x"
(3) if z is a DT scalar and x an array component at level > 1, or
if z is a DT array and x an array (at any level), use "z...%x"
Use a new helper function abridged_ref_name for construction of that name.
gcc/fortran/ChangeLog:
PR fortran/30802
* trans-array.cc (abridged_ref_name): New helper function.
(trans_array_bound_check): Use it.
(array_bound_check_elemental): Likewise.
(gfc_conv_array_ref): Likewise.
gcc/testsuite/ChangeLog:
PR fortran/30802
* gfortran.dg/bounds_check_17.f90: Adjust pattern.
* gfortran.dg/bounds_check_fail_8.f90: New test.
where we since r11-291 fail to emit the code for the explicit
instantiation. That's because cp_walk_subtrees/TYPENAME_TYPE now
walks TYPE_CONTEXT ('conditional' here) as well, and in a template
finds the B==VAL template argument. VAL is constexpr, which implies const,
which in the global scope implies static. constrain_visibility_for_template
then makes "struct conditional<(B == VAL), int, float>" non-TREE_PUBLIC.
Then symtab_node::needed_p checks TREE_PUBLIC, sees it's 0, and we don't
emit any code.
I thought the fix would be some ODR-esque check to not consider
constexpr variables/fns that are used just for their value. But
it turned out to be tricky. For instance, we can't skip
determine_visibility in a template; we can't even skip it for value-dep
expressions. For example, no-linkage-expr1.C has
using P = struct {}*;
template <int N>
void f(int(*)[((P)0, N)]) {}
where ((P)0, N) is value-dep, but N is not relevant here: we have to
ferret out the anonymous type. When instantiating, it's already gone.
This patch uses decl_constant_var_p. This is to implement (an
approximation) [basic.def.odr]#14.5.1 and [basic.def.odr]#5.2.
PR c++/110323
gcc/cp/ChangeLog:
* decl2.cc (min_vis_expr_r) <case VAR_DECL>: Do nothing for
decl_constant_var_p VAR_DECLs.
gcc/testsuite/ChangeLog:
* g++.dg/template/explicit-instantiation6.C: New test.
* g++.dg/template/explicit-instantiation7.C: New test.
Jakub Jelinek [Thu, 21 Mar 2024 12:07:50 +0000 (13:07 +0100)]
libgcc: Fix up bitint division [PR114397]
The Knuth's division algorithm relies on the number of dividend limbs
to be greater ore equal to number of divisor limbs, which is why
I've added a special case for un < vn at the start of __divmodbitint4.
Unfortunately, my assumption that it then implies abs(v) > abs(u) and
so quotient must be 0 and remainder same as dividend is incorrect.
This is because this check is done before negation of the operands.
While bitint_reduce_prec reduces precision from clearly useless limbs,
the problematic case is when the dividend is unsigned or non-negative
and divisor is negative. We can have limbs (from MS to LS):
dividend: 0 M ?...
divisor: -1 -N ?...
where M has most significant bit set and M >= N (if M == N then it
also the following limbs matter) and the most significant limbs can
be even partial. In this case, the quotient should be -1 rather than
0. bitint_reduce_prec will reduce the precision of the dividend so
that M is the most significant limb, but can't reduce precision of the
divisor to more than having the -1 as most significant limb, because
-N doesn't have the most significant bit set.
The following patch fixes it by detecting this problematic case in the
un < vn handling, and instead of assuming q is 0 and r is u will
decrease vn by 1 because it knows the later code will negate the divisor
and it can be then expressed after negation in one fewer limbs.
2024-03-21 Jakub Jelinek <jakub@redhat.com>
PR libgcc/114397
* libgcc2.c (__divmodbitint4): Don't assume un < vn always means
abs(v) > abs(u), check for a special case of un + 1 == vn where
u is non-negative and v negative and after v's negation vn could
be reduced by 1.
Richard Biener [Tue, 19 Mar 2024 13:50:06 +0000 (14:50 +0100)]
tree-optimization/113727 - bogus SRA with BIT_FIELD_REF
When SRA analyzes BIT_FIELD_REFs it handles writes and not byte
aligned reads differently from byte aligned reads. Instead of
trying to create replacements for the loaded portion the former
cases try to replace the base object while keeping the wrapping
BIT_FIELD_REFs. This breaks when we have both kinds operating
on the same base object if there's no appearant overlap conflict
as the conflict that then nevertheless exists isn't handled with.
The fix is to enforce what I think is part of the design handling
the former case - that only the full base object gets replaced
and no further sub-objects are created within as otherwise
keeping the wrapping BIT_FIELD_REF cannot work. The patch
enforces this within analyze_access_subtree.
PR tree-optimization/113727
* tree-sra.cc (analyze_access_subtree): Do not allow
replacements in subtrees when grp_partial_lhs.
David Malcolm [Wed, 20 Mar 2024 22:33:11 +0000 (18:33 -0400)]
analyzer: fix -Wanalyzer-deref-before-check false positive seen in loop header macro [PR109251]
gcc/analyzer/ChangeLog:
PR analyzer/109251
* sm-malloc.cc (deref_before_check::emit): Reject cases where the
check is in a loop header within a macro expansion.
(deref_before_check::loop_header_p): New.
gcc/testsuite/ChangeLog:
PR analyzer/109251
* c-c++-common/analyzer/deref-before-check-pr109251-1.c: New test.
* c-c++-common/analyzer/deref-before-check-pr109251-2.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
bpf: Corrected index computation when present with unnamed struct fields
Any unnamed non-struct-or-union field is not a member of the
BTF_KIND_STRUCT.
For that reason, CO-RE access strings indexes should take that in
consideration. This patch adds a condition to the incrementer that
computes the index for the field access.
gcc/ChangeLog:
* config/bpf/core-builtins.cc (bpf_core_get_index): Check if
field contains a DECL_NAME.
gcc/testsuite/ChangeLog:
* gcc.target/bpf/core-builtin-fieldinfo-offset-1.c: Add
testcase for unnamed fields.
bpf: Fix access string default for CO-RE type based relocations
Although part of all CO-RE relocation data, type based relocations do
not require an access string.
Initial implementation defined it as an empty string.
On the other hand, libbpf when parsing the CO-RE relocations verifies
that those strings would contain "0", otherwise reports an error.
This patch makes GCC compliant with libbpf expectations.
gcc/Changelog:
* config/bpf/btfext-out.cc (cpf_core_reloc_add): Correct for new code.
Add assert to validate the string is set.
* config/bpf/core-builtins.cc (cr_final): Make string struct
field as const.
(process_enum_value): Correct for field type change.
(process_type): Set access string to "0".
This patch corrects bugs within the CO-RE builtin field expression
related builtins.
The following bugs were identified and corrected based on the expected
results of bpf-next selftests testsuite.
It addresses the following problems:
- Expressions with pointer dereferencing now point to the BTF structure
type, instead of the structure pointer type.
- Pointer addition to structure root is now identified and constructed
in CO-RE relocations as if it is an array access. For example,
"&(s+2)->b" generates "2:1" as an access string where "2" is
refering to the access for "s+2".
gcc/ChangeLog:
* config/bpf/core-builtins.cc (core_field_info): Add
support for POINTER_PLUS_EXPR in the root of the field expression.
(bpf_core_get_index): Likewise.
(pack_field_expr): Make the BTF type to point to the structure
related node, instead of its pointer type.
(make_core_safe_access_index): Correct to new code.
gcc/testsuite/ChangeLog:
* gcc.target/bpf/core-attr-5.c: Correct.
* gcc.target/bpf/core-attr-6.c: Likewise.
* gcc.target/bpf/core-attr-struct-as-array.c: Add test case for
pointer arithmetics as array access use case.
Jakub Jelinek [Wed, 20 Mar 2024 16:00:51 +0000 (17:00 +0100)]
visium: Fix up visium_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, visium seems to be affected too.
Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/visium/visium.cc (visium_setup_incoming_varargs): Only skip
TARGET_FUNCTION_ARG_ADVANCE for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Wed, 20 Mar 2024 16:00:08 +0000 (17:00 +0100)]
nios2: Fix up nios2_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, nios2 seems to be affected too.
Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/nios2/nios2.cc (nios2_setup_incoming_varargs): Only skip
nios2_function_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Wed, 20 Mar 2024 15:59:56 +0000 (16:59 +0100)]
nds32: Fix up nds32_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, nds32 seems to be affected too.
Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/nds32/nds32.cc (nds32_setup_incoming_varargs): Only skip
function arg advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Wed, 20 Mar 2024 15:59:43 +0000 (16:59 +0100)]
m32r: Fix up m32r_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, m32r seems to be affected too.
Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/m32r/m32r.cc (m32r_setup_incoming_varargs): Only skip
function arg advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Wed, 20 Mar 2024 15:59:32 +0000 (16:59 +0100)]
ft32: Fix up ft32_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, ft32 seems to be affected too.
Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/ft32/ft32.cc (ft32_setup_incoming_varargs): Only skip
function arg advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Wed, 20 Mar 2024 15:59:21 +0000 (16:59 +0100)]
epiphany: Fix up epiphany_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, epiphany seems to be affected too.
Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/epiphany/epiphany.cc (epiphany_setup_incoming_varargs): Only
skip function arg advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Wed, 20 Mar 2024 15:59:08 +0000 (16:59 +0100)]
csky: Fix up csky_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, csky seems to be affected too.
Just visually checked differences in c23-stdarg-9.c assembly in a cross
without/with the patch, committed to trunk.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/csky/csky.cc (csky_setup_incoming_varargs): Only skip
csky_function_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Wed, 20 Mar 2024 10:46:07 +0000 (11:46 +0100)]
Use integer_{zero,one}_node some more
When looking at the analyzer MEM_REF invalid second arg issue, I've noticed
tons of build_int_cst (integer_type_node, {0,1}) or build_zero_cst
(integer_type_node) cases.
That just wastes compile time (albeit not very much).
The following patch fixes what my sed script found.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
gcc/analyzer/
* constraint-manager.cc (test_range, test_constraint_conditions,
test_constant_comparisons, test_constraint_impl, test_purging,
test_bits): Use integer_zero_node instead of
build_zero_cst (integer_type_node) or
build_int_cst (integer_type_node, 0) and integer_one_node instead of
build_int_cst (integer_type_node, 1).
* region-model.cc (region_model::get_store_value,
append_interesting_constants, test_array_1,
test_get_representative_tree, test_unique_constants, test_assignment,
test_stack_frames, test_constraint_merging, test_widening_constraints,
test_iteration_1, test_array_2): Likewise.
gcc/cp/
* coroutines.cc (expand_one_await_expression): Use
integer_zero_node instead of build_int_cst (integer_type_node, 0)
and integer_one_node instead of build_int_cst (integer_type_node, 1).
gcc/fortran/
* trans-array.cc (structure_alloc_comps): Use integer_zero_node
instead of build_zero_cst (integer_type_node) or
build_int_cst (integer_type_node, 0) and integer_one_node instead of
build_int_cst (integer_type_node, 1).
* trans-expr.cc (conv_scalar_char_value): Likewise.
* trans-stmt.cc (gfc_trans_form_team, gfc_trans_change_team,
gfc_trans_sync_team, gfc_trans_sync): Likewise.
* trans-decl.cc (create_main_function): Likewise.
* trans-intrinsic.cc (trans_this_image, conv_intrinsic_move_alloc):
Likewise.
* trans.cc (gfc_allocate_using_caf_lib, gfc_deallocate_with_status):
Likewise.
gcc/objc/
* objc-next-runtime-abi-02.cc (build_v2_class_ro_t_initializer): Use
integer_zero_node instead of build_int_cst (integer_type_node, 0).
Jakub Jelinek [Wed, 20 Mar 2024 09:55:07 +0000 (10:55 +0100)]
bitint: Fix handling of conditional bitfield loads [PR114365]
For the m_var_msb (aka left shift) case of large/huge _BitInt bitfield loads
handle_load adds a PHI node, but I forgot to actually update the temporary
the code later on uses, so the PHI result was unused and the code
incorrectly used something that wasn't valid SSA form.
In particular, we emitted
if (_29 != 2)
goto <bb 4>; [80.00%]
else
goto <bb 5>; [20.00%]
Jakub Jelinek [Wed, 20 Mar 2024 09:34:51 +0000 (10:34 +0100)]
system.h: rename vec_step to workaround powerpc/clang bug [PR114369]
On Sat, Jul 20, 2019 at 05:26:57PM +0100, Richard Sandiford wrote:
> Gerald Pfeifer <gerald@pfeifer.com> writes:
> > I have seen an increasing number of reports of GCC failing to
> > build with clang on powerpc (on FreeBSD, though that's probably
> > immaterial).
> >
> > Turns out that clang has vec_step as a reserved word on powerpc
> > with AltiVec.
> >
> > We OTOH use vec_step s as a variable name in gcc/tree-vect-loop.c.
> >
> >
> > The best approach I can see is to rename vec_step. Before I prepare
> > a patch: what alternate name/spelling would you prefer?
>
> Would it work to #define vec_step to vec_step_ or something on affected
> hosts, say in system.h?
>
> I'd prefer that to renmaing since "vec_step" does seem the most natural
> name for the variable. The equivalent scalar variable is "step" and
> other vector values in the surrounding code also use the "vec_" prefix.
So like this?
If/when clang finally fixes https://github.com/llvm/llvm-project/issues/85579
on their side, we can then limit it to clang versions which still have the
bug.
I've git grepped for vec_set and appart from altivec.h it is just used in
tree-vect-loop.cc, some Ada files which aren't preprocessed, ChangeLogs,
rs6000-vecdefines.h (but that header is only included from altivec.h and
vec_step is then redefined to the function-like macro) and in rs6000-overload.def
but that file is processed with a generator, not included in C/C++ sources.
2024-03-20 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/114369
* system.h (vec_step): Define to vec_step_ when compiling
with clang on PowerPC.
Richard Biener [Tue, 19 Mar 2024 14:25:16 +0000 (15:25 +0100)]
middle-end/113396 - int128 array index and value-ranges
The following fixes bogus truncation of a value-range for an int128
array index when computing the maximum extent for a variable array
reference. Instead of possibly slowing things down by using
widest_int the following makes sure the range bounds fit within
the constraints offset_int were designed for.
PR middle-end/113396
* tree-dfa.cc (get_ref_base_and_extent): Use index range
bounds only if they fit within the address-range constraints
of offset_int.
Lewis Hyatt [Wed, 8 Nov 2023 21:13:14 +0000 (16:13 -0500)]
diagnostics: Fix behavior of permerror options after diagnostic pop [PR111918]
When a diagnostic pragma changes the classification of a given diagnostic,
the global options flags (such as warn_narrowing, etc.) may get changed too.
Specifically, if a warning was not enabled initially and was later enabled
by a pragma, then the corresponding global flag will change from false to
true when the pragma is processed. That change is permanent and is not
undone by a subsequent `#pragma GCC diagnostic pop'; the warning flag needs
to remain enabled since a diagnostic could be generated later on for a
source location prior to the pop.
So in order to support popping to the initial classification, given that the
global options flags no longer reflect that state, the diagnostic_context
object itself remembers the way things were before it changed anything. The
current implementation works fine for diagnostics that are always errors or
always warnings, but it doesn't do the right thing for diagnostics that
could be either, such as -Wnarrowing. The classification of that diagnostic
(or any permerror diagnostic) depends on the state of -fpermissive; for the
particular case of -Wnarrowing it also matters whether a compile-time or
run-time narrowing is being diagnosed.
The problem is that the current implementation insists on recording whether
an enabled diagnostic should be a DK_WARNING or a DK_ERROR, and then, after
popping to the initial state, it overrides it always to that type only. Fix
that up by adding a new internal diagnostic type DK_ANY. This just indicates
that the diagnostic is enabled without mandating exactly what type of
diagnostic it should be. Then the diagnostic can be emitted with whatever
type the frontend asks for.
Incidentally, while making this change, I noticed that classify_diagnostic()
spends some time computing a return value (the old classification kind) that
is not used anywhere. The computed value seems to have some problems, mainly
that it does not take into account `#pragma GCC diagnostic pop' at all, and
so the returned value doesn't seem like it could make sense in many
contexts. Given it would also not be desirable to leak the new internal-only
DK_ANY type to outside callers, I think it would make sense in a subsequent
cleanup patch to remove the return value altogether.
gcc/ChangeLog:
PR c++/111918
* diagnostic-core.h (enum diagnostic_t): Add DK_ANY special flag.
* diagnostic.cc (diagnostic_option_classifier::classify_diagnostic):
Make use of DK_ANY to indicate a diagnostic was initially enabled.
(diagnostic_context::diagnostic_enabled): Do not change the type of
a diagnostic if the saved classification is type DK_ANY.
gcc/testsuite/ChangeLog:
PR c++/111918
* g++.dg/cpp0x/Wnarrowing21a.C: New test.
* g++.dg/cpp0x/Wnarrowing21b.C: New test.
* g++.dg/cpp0x/Wnarrowing21c.C: New test.
* g++.dg/cpp0x/Wnarrowing21d.C: New test.
Martin Jambor [Tue, 19 Mar 2024 21:33:27 +0000 (22:33 +0100)]
ipa: Fix C++ member ptr indirect inlining (PR 114254, PR 108802)
Even though we have had code to handle creation of indirect call graph
edges (so that these calls can than be made direct as part of IPA-CP
and inlining and eventually also inlined) for C++ member pointers for
many years, it turns out that it does not work for lambdas and that it
has been severely broken since GCC 10 when the base class has virtual
functions.
Lambdas don't work because the code cannot work with structures
representing member function pointers because they are passed by
reference instead by value and the code was not ready for that.
The presence of virtual methods broke thinks because at some point C++
FE got clever and stopped emitting the check for virtual methods when
the base class does not have any and that in turn made our existing
testcases not test the necessary pattern matching code. The pattern
matcher had a small bug which did not matter before r10-917-g3b47da42de621c but did afterwards.
This patch changes the pattern matcher to match both of these cases.
gcc/ChangeLog:
2024-03-06 Martin Jambor <mjambor@suse.cz>
PR ipa/108802
PR ipa/114254
* ipa-prop.cc (ipa_get_stmt_member_ptr_load_param): Fix case looking
at COMPONENT_REFs directly from a PARM_DECL, also recognize loads from
a pointer parameter.
(ipa_analyze_indirect_call_uses): Also recognize loads from a pointer
parameter, also recognize the case when pfn pointer is loaded in its
own BB.
Marek Polacek [Tue, 19 Mar 2024 21:15:38 +0000 (17:15 -0400)]
testsuite: fix target for linkage-1.C
This test fails in C++11 due to:
linkage-1.C:3:8: error: 'f' function uses 'auto' type specifier without trailing return type
3 | inline auto f() {
| ^~~~
linkage-1.C:3:8: note: deduced return type only available with '-std=c++14' or '-std=gnu++14'
LRA removed insn setting equivalence to memory whose output was
reloaded. This resulted in writing an uninitiated value to the memory
which triggered assert in LRA code checking the final generated code.
This patch fixes the problem. Comment in the patch contains more
details about the problem and its solution.
gcc/ChangeLog:
PR target/99829
* lra-constraints.cc (lra_constraints): Prevent removing insn
with reverse equivalence to memory if the memory was reloaded.
Jakub Jelinek [Tue, 19 Mar 2024 20:06:13 +0000 (16:06 -0400)]
analyzer: fix ICE due to corrupt MEM_REFs [PR113505]
gcc/analyzer/ChangeLog
PR analyzer/113505
* region-model.cc (get_tree_for_byte_offset,
region_model::get_representative_path_var_1,
test_mem_ref, test_POINTER_PLUS_EXPR_then_MEM_REF): Use
char __attribute__((may_alias)) * as type of MEM_REF second argument.
gcc/testsuite/ChangeLog
PR analyzer/113505
* gcc.dg/analyzer/pr113505.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
David Malcolm [Tue, 19 Mar 2024 17:57:35 +0000 (13:57 -0400)]
diagnostics: fix corrupt json/SARIF on stderr [PR114348]
Various values of -fdiagnostics-format= request machine-readable output
on stderr, using JSON, but in various places we use fnotice to write
free-form text to stderr, such as "compilation terminated", leading to
corrupt JSON.
Fix by having fnotice skip the output for such cases.
gcc/ChangeLog:
PR middle-end/114348
* diagnostic-format-json.cc
(json_stderr_output_format::machine_readable_stderr_p): New.
(json_file_output_format::machine_readable_stderr_p): New.
* diagnostic-format-sarif.cc
(sarif_stream_output_format::machine_readable_stderr_p): New.
(sarif_file_output_format::machine_readable_stderr_p): New.
* diagnostic.cc (diagnostic_context::action_after_output): Move
"fnotice" to before "finish" call, so that we still have the
diagnostic_context.
(fnotice): Bail out if the user requested one of the
machine-readable diagnostic output formats on stderr.
* diagnostic.h
(diagnostic_output_format::machine_readable_stderr_p): New pure
virtual function.
(diagnostic_text_output_format::machine_readable_stderr_p): New.
(diagnostic_context::get_output_format): New accessor.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Edwin Lu [Tue, 12 Mar 2024 21:31:40 +0000 (14:31 -0700)]
RISC-V: Update test expectancies with recent scheduler change
Given the recent change with adding the scheduler pipeline descriptions,
many scan-dump failures emerged. Relax the expected assembler output
conditions on the affected tests to reduce noise.
Edwin Lu [Mon, 18 Mar 2024 18:43:41 +0000 (11:43 -0700)]
RISC-V: Fix C23 (...) functions returning large aggregates [PR114175]
We assume that TYPE_NO_NAMED_ARGS_STDARG_P don't have any named arguments and
there is nothing to advance, but that is not the case for (...) functions
returning by hidden reference which have one such artificial argument.
This causes gcc.dg/c23-stdarg-[68].c to fail
PR target/114175
* config/riscv/riscv.cc (riscv_setup_incoming_varargs): Only skip
riscv_funciton_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL
Jonathan Wakely [Mon, 18 Mar 2024 13:22:17 +0000 (13:22 +0000)]
libstdc++: Fix infinite loop in std::binomial_distribution [PR114359]
The multiplication (4 * _M_t * __1p) can wraparound to zero if _M_t is
unsigned and 4 * _M_t wraps to zero. The third operand has type double,
so do the second multiplication first, so that we aren't multiplying
integers.
libstdc++-v3/ChangeLog:
PR libstdc++/114359
* include/bits/random.tcc (binomial_distribution::param_type):
Ensure arithmetic is done as type double.
* testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.
Jonathan Wakely [Thu, 29 Feb 2024 17:13:49 +0000 (17:13 +0000)]
libstdc++: Suppress deprecation messages from <tbb/task.h> [PR101228]
libstdc++-v3/ChangeLog:
PR libstdc++/101228
* include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
Define before including <tbb/task.h> then undef afterwards.
Jonathan Wakely [Fri, 1 Mar 2024 11:20:51 +0000 (11:20 +0000)]
libstdc++: Regenerate <bits/version.h> in maintainer mode
This is a generated header but regenerating it requires the manual step
of running 'make -C include update-version' in the libstdc++ build dir.
Make it regenerate automatically when --enable-maintainer-mode is used.
Jonathan Wakely [Tue, 19 Mar 2024 12:58:27 +0000 (12:58 +0000)]
libstdc++: Update docs on build process and generated files
There are several more sub-directories below 'src' now, with lots more
conveience libraries. Document them all as of GCC 14.
Also document how to regenerate the generated headers under include/bits
and how to update the tzdata.zi file.
libstdc++-v3/ChangeLog:
* doc/xml/manual/build_hacking.xml: Document generated files.
Update list of convenience libraries and sub-directories under
the src directory.
* doc/html/*: Regenerate.
Jonathan Wakely [Tue, 19 Mar 2024 12:43:29 +0000 (12:43 +0000)]
libstdc++: Fix Python scripts to output the correct filename
These scripts both print "generated by $file, do not edit" header but
one of them prints the wrong filename. Use the built-in __file__
attribute to ensure it's correct.
contrib/ChangeLog:
* unicode/gen_libstdcxx_unicode_data.py: Fix header of generated
file to name the correct script.
libstdc++-v3/ChangeLog:
* include/bits/text_encoding-data.h: Regenerate.
* include/bits/unicode-data.h: Regenerate.
* scripts/gen_text_encoding_data.py: Fix header of generated
file to name the correct script.
Jonathan Wakely [Mon, 18 Mar 2024 13:00:17 +0000 (13:00 +0000)]
libstdc++: Begin lifetime of storage in std::vector<bool> [PR114367]
This doesn't cause a problem with GCC, but Clang correctly diagnoses a
bug in the code. The objects in the allocated storage need to begin
their lifetime before we start using them.
This change uses the allocator's construct function instead of using
std::construct_at directly, in order to support fancy pointers.
libstdc++-v3/ChangeLog:
PR libstdc++/114367
* include/bits/stl_bvector.h (_M_allocate): Use allocator's
construct function to begin lifetime of words.
David Malcolm [Tue, 19 Mar 2024 13:06:45 +0000 (09:06 -0400)]
analyzer: fixes to __atomic_{exchange,load,store} [PR114286]
In r14-1497-gef768035ae8090 I added some support to the analyzer for
__atomic_ builtins (enough to fix false positives I was seeing in
my integration tests).
Unfortunately I messed up the implementation of
__atomic_{exchange,load,store}, leading to ICEs seen in
PR analyzer/114286.
Fixed thusly, fixing the ICEs. Given that we're in stage 4, the patch
doesn't add support for any of the various __atomic_compare_exchange
builtins, so that these continue to fall back to the analyzer's
"anything could happen" handling of unknown functions.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
gcc/analyzer/ChangeLog:
PR analyzer/114286
* kf.cc (class kf_atomic_exchange): Reimplement based on signature
seen in gimple, rather than user-facing signature.
(class kf_atomic_load): Likewise.
(class kf_atomic_store): New.
(register_atomic_builtins): Register kf_atomic_store.
gcc/testsuite/ChangeLog:
PR analyzer/114286
* c-c++-common/analyzer/atomic-builtins-pr114286.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Iain Sandoe [Mon, 18 Mar 2024 10:06:44 +0000 (10:06 +0000)]
testsuite, Darwin: Use the IOKit framework in framework-1.c [PR114049].
The intent of the test is to show that we find a framework that
is installed in /System/Library/Frameworks when the user has added
a '-F' option. The trick is to choose some header that is present
for all the Darwin versions we support and that does not contain any
content we cannot parse. We had been using the Kernel framework for
this, but recent SDK versions have revealed that this is not suitable.
Replacing with a use of IOKit.
PR target/114049
gcc/testsuite/ChangeLog:
* gcc.dg/framework-1.c: Use an IOKit header instead of a
Kernel one.
Iain Sandoe [Mon, 18 Mar 2024 09:57:33 +0000 (09:57 +0000)]
libstdc++: Sync the atomic_link_flags implementation with GCC.
For Darwin, in order to allow uninstalled testing, we need to provide
a '-B' option pointing to each path containing an uninstalled library
that we are using (these get appended to the embedded runpaths).
This updates the version of the atomic_link_flags proc in the libstdc++
testsuite to do the same as the one in the GCC testsuite.
libstdc++-v3/ChangeLog:
* testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
option for the path to the uninstalled libatomic.
Iain Sandoe [Tue, 19 Mar 2024 10:40:50 +0000 (10:40 +0000)]
libstdc++, Darwin: Do not use dev/null as the file for executables.
Darwin has a separate debug linker, which is invoked when the command
line contains source files and debug is enabled.
Using /dev/null as the executable name does not, therefore, work when
debug is enabled, since the debug linker does not accept /dev/null as
a valid executable name.
The leads to incorrectly UNSUPPORTED testcases because of the unintended
error result from the test compilation.
The solution here is to use a temporary file that is deleted at the
end of the test (which is the mechanism used elsewhere)
libstdc++-v3/ChangeLog:
* testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
/dev/null, use a temporary file for test executables on Darwin.
Richard Biener [Tue, 19 Mar 2024 11:24:08 +0000 (12:24 +0100)]
tree-optimization/114151 - revert PR114074 fix
The following reverts the chrec_fold_multiply fix and only keeps
handling of constant overflow which keeps the original testcase
fixed. A better solution might involve ranger improvements or
tracking of assumptions during SCEV analysis similar to what niter
analysis does.
PR tree-optimization/114151
PR tree-optimization/114269
PR tree-optimization/114322
PR tree-optimization/114074
* tree-chrec.cc (chrec_fold_multiply): Restrict the use of
unsigned arithmetic when actual overflow on constant operands
is observed.
Jakub Jelinek [Tue, 19 Mar 2024 08:49:59 +0000 (09:49 +0100)]
arc: Fix up arc_setup_incoming_varargs [PR114175]
Like for x86-64, alpha or rs6000, arc seems to be affected too.
2024-03-19 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/arc/arc.cc (arc_setup_incoming_varargs): Only skip
arc_function_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Xi Ruoyao [Mon, 18 Mar 2024 09:18:34 +0000 (17:18 +0800)]
LoongArch: Fix C23 (...) functions returning large aggregates [PR114175]
We were assuming TYPE_NO_NAMED_ARGS_STDARG_P don't have any named
arguments and there is nothing to advance, but that is not the case
for (...) functions returning by hidden reference which have one such
artificial argument. This is causing gcc.dg/c23-stdarg-6.c and
gcc.dg/c23-stdarg-8.c to fail.
Fix the issue by checking if arg.type is NULL, as r14-9503 explains.
gcc/ChangeLog:
PR target/114175
* config/loongarch/loongarch.cc
(loongarch_setup_incoming_varargs): Only skip
loongarch_function_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P
functions if arg.type is NULL.
Christophe Lyon [Fri, 15 Mar 2024 19:55:43 +0000 (19:55 +0000)]
arm: [MVE intrinsics] Fix support for loads [PR target/114323]
The testcase in this PR shows that we would load from an uninitialized
location, because the vld1 instrinsics are reported as "const". This
is because function_instance::reads_global_state_p() does not take
CP_READ_MEMORY into account. Fixing this gives vld1 the "pure"
attribute instead, and solves the problem.
Like in the r14-9503 change on x86-64, I think Alpha also needs to
function_arg_advance after the hidden return pointer argument if
any.
At least, the following patch changes the assembly of s1-s6 functions
on the https://gcc.gnu.org/pipermail/gcc-patches/2024-March/647956.html
c23-stdarg-9.c testcase, and eyeballing the assembly for int f8 (...)
the ... args are passed in 16..21 registers and then on the stack,
while for struct S s8 (...) have hidden return pointer passed in 16
register and ... args in 17..21 registers and then on the stack, and
seems without this patch the incoming varargs setup does the wrong thing
(but I can't test on alpha easily).
Many targets seem to be unaffected, e.g. aarch64, arm, s390*, so I'm not
trying to change all targets together because such a change clearly isn't
needed e.g. for targets which use special register for the hidden return
pointer.
2024-03-19 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/alpha/alpha.cc (alpha_setup_incoming_varargs): Only skip
function_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Tue, 19 Mar 2024 08:13:32 +0000 (09:13 +0100)]
rs6000: Fix up setup_incoming_varargs [PR114175]
The c23-stdarg-8.c test (as well as the new test below added to cover even
more cases) FAIL on powerpc64le-linux and presumably other powerpc* targets
as well.
Like in the r14-9503-g218d174961 change on x86-64 we need to advance
next_cum after the hidden return pointer argument even in case where
there are no user arguments before ... in C23.
The following patch does that.
There is another TYPE_NO_NAMED_ARGS_STDARG_P use later on:
if (!TYPE_NO_NAMED_ARGS_STDARG_P (TREE_TYPE (current_function_decl))
&& targetm.calls.must_pass_in_stack (arg))
first_reg_offset += rs6000_arg_size (TYPE_MODE (arg.type), arg.type);
but I believe it was added there in r13-3549-g4fe34cdc unnecessarily,
when there is no hidden return pointer argument, arg.type is NULL and
must_pass_in_stack_var_size as well as must_pass_in_stack_var_size_or_pad
return false in that case, and for the TYPE_NO_NAMED_ARGS_STDARG_P
case with hidden return pointer argument that argument should have pointer
type and it is the first argument, so must_pass_in_stack shouldn't be true
for it either.
2024-03-19 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/rs6000/rs6000-call.cc (setup_incoming_varargs): Only skip
rs6000_function_arg_advance_1 for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
Jakub Jelinek [Tue, 19 Mar 2024 08:10:26 +0000 (09:10 +0100)]
openmp: Make c_omp_check_loop_binding_exprs diagnostics translatable [PR114364]
c_omp_check_loop_binding_exprs with check_loop_binding_expr was composing
diagnostics from a format string with %s that provided additional words (but not
keywords). That is a big no no for translations, both because the translator
can't choose a different word order and because the %s part wasn't translated
at all (would need to use _("...") to get translated), so this patch rewrites it
such that the whole messages are in the format strings.
2024-03-19 Jakub Jelinek <jakub@redhat.com>
PR c/114364
* c-omp.cc (enum check_loop_binding_expr_ctx): New type.
(check_loop_binding_expr): Remove context argument, add ctx
argument with check_loop_binding_expr_ctx type at the end. Don't
create diagnostic message from multiple pieces.
(c_omp_check_loop_binding_exprs): Adjust callers.
Richard Biener [Mon, 18 Mar 2024 11:39:03 +0000 (12:39 +0100)]
tree-optimization/114375 - disallow SLP discovery of permuted mask loads
We cannot currently handle permutations of mask loads in code generation
or permute optimization. But we simply drop any permutation on the
floor, so the following instead rejects the SLP build rather than
producing wrong-code. I've also made sure to reject them in
vectorizable_load for completeness.
PR tree-optimization/114375
* tree-vect-slp.cc (vect_build_slp_tree_2): Compute the
load permutation for masked loads but reject it when any
such is necessary.
* tree-vect-stmts.cc (vectorizable_load): Reject masked
VMAT_ELEMENTWISE and VMAT_STRIDED_SLP as those are not
supported.
Contributors:
Mary Bennett <mary.bennett@embecosm.com>
Nandni Jamnadas <nandni.jamnadas@embecosm.com>
Pietra Ferreira <pietra.ferreira@embecosm.com>
Charlie Keaney
Jessica Mills
Craig Blackmore <craig.blackmore@embecosm.com>
Simon Cook <simon.cook@embecosm.com>
Jeremy Bennett <jeremy.bennett@embecosm.com>
Helene Chelin <helene.chelin@embecosm.com>
gcc/ChangeLog:
* common/config/riscv/riscv-common.cc: Create XCVbi extension
support.
* config/riscv/riscv.opt: Likewise.
* config/riscv/corev.md: Implement cv_branch<mode> pattern
for cv.beqimm and cv.bneimm.
* config/riscv/riscv.md: Add CORE-V branch immediate to RISC-V
branch instruction pattern.
* config/riscv/constraints.md: Implement constraints
cv_bi_s5 - signed 5-bit immediate.
* config/riscv/predicates.md: Implement predicate
const_int5s_operand - signed 5 bit immediate.
* doc/sourcebuild.texi: Add XCVbi documentation.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/cv-bi-beqimm-compile-1.c: New test.
* gcc.target/riscv/cv-bi-beqimm-compile-2.c: New test.
* gcc.target/riscv/cv-bi-bneimm-compile-1.c: New test.
* gcc.target/riscv/cv-bi-bneimm-compile-2.c: New test.
* lib/target-supports.exp: Add proc for XCVbi.
This patch add XiangShan Nanhu cpu microarchitecture,
Nanhu is a 6-issue, superscalar, out-of-order processor.
More details see: https://xiangshan-doc.readthedocs.io/zh-cn/latest/arch
gcc/ChangeLog:
* config/riscv/riscv-cores.def (RISCV_TUNE): New def.
(RISCV_CORE): Ditto.
* config/riscv/riscv-opts.h (enum riscv_microarchitecture_type): New
option.
* config/riscv/riscv.cc: New def.
* config/riscv/riscv.md: New include.
* config/riscv/xiangshan.md: New file.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/mcpu-xiangshan-nanhu.c: New test.
Nathaniel Shead [Sat, 16 Mar 2024 11:00:29 +0000 (22:00 +1100)]
c++: Fix handling of no-linkage decls for modules
When testing the changes for PR c++/112631 we discovered that currently
we don't emit definitions of block-scope function declarations if
they're not used in the module interface TU, which causes issues if they
are used by importers.
This patch fixes the handling of no-linkage declarations for C++20. In
particular, a type declared in a function with vague linkage or declared
in a module CMI could potentially be accessible outside its defining TU,
and as such we can't assume that function declarations using that type
can never be defined in another TU.
A complication with handling this is that we're only strictly interested
in declarations with a module CMI, but when parsing the global module
fragment we don't yet know whether or not this module will have a CMI
until we reach the "export module" line (or not). Since this case is
IFNDR anyway (by [basic.def.odr] p11) we just tentatively assume while
parsing the GMF that this module will have a CMI; once we see (or don't
see) an 'export module' declaration we can commit to that knowledge for
future declarations.
gcc/cp/ChangeLog:
* cp-tree.h (module_maybe_has_cmi_p): New function.
* decl.cc (grokfndecl): Mark block-scope functions as public if
they could be visible in other TUs.
* decl2.cc (no_linkage_error): Don't error for declarations that
could be defined in other TUs since C++20. Suppress duplicate
errors from 'check_global_declaration'.
* tree.cc (no_linkage_check): In relaxed mode, don't consider
types in a module CMI to have no linkage.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/linkage-1.C: New test.
* g++.dg/modules/block-decl-3.h: New test.
* g++.dg/modules/block-decl-3_a.C: New test.
* g++.dg/modules/block-decl-3_b.C: New test.
* g++.dg/modules/block-decl-3_c.C: New test.
* g++.dg/modules/linkage-1_a.C: New test.
* g++.dg/modules/linkage-1_b.C: New test.
* g++.dg/modules/linkage-1_c.C: New test.
* g++.dg/modules/linkage-2.C: New test.
Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com> Reviewed-by: Jason Merrill <jason@redhat.com>
David Malcolm [Mon, 18 Mar 2024 22:44:34 +0000 (18:44 -0400)]
analyzer: fix ICEs due to sloppy types in bounds-checking [PR110902,PR110928,PR111305,PR111441]
Various analyzer ICEs in our bugzilla relate to sloppy use of types
within bounds-checking.
The bounds-checking code works by comparing symbolic *bit* offsets, and
we don't have a good user-facing type that can represent such an offset
(ptrdiff_type_node is for *byte* offsets).
ana::svalue doesn't enforce valid combinations of types for things like
binary operations. When I added the access diagrams for GCC 14, this
could lead to attempts to generate trees for such svalues, leading to
trees with invalid combinations of types (e.g. PLUS_EXPR or MULT_EXPR of
incompatible types), leading to ICEs inside the tree folding logic.
I tried two approaches to fixing this.
My first approach was to fix the type-handling throughout the
bounds-checking code to use correct types, using size_type_node for
sizes, ptrdiff_type_node for byte offsets, and trying ptrdiff_type_node
for bit offsets. I implemented this, and it fixed the crashes, but
unfortunately it led to:
(a) numerous false negatives from the bounds-checking code, due to it
becoming unable to be sure that the accessed offset was beyond the valid
bounds, due to the expressions involved gaining complicated sets of
nested casts.
(b) ugly access diagrams full of nested casts (for capacities, gap
measurements, etc)
So my second approach, implemented in this patch, is to accept that we
don't have a tree type for representing bit offsets. The patch
represents bit offsets using "typeless" symbolic values i.e. ones for
which get_type () is NULL_TREE, and implements enough support for basic
arithemetic as if these are mathematical integers (albeit ones for which
concrete values within an expression must fit within a signed wide int).
Such values can't be converted to tree, so the patch avoids such
conversions, instead implementing a new svalue::maybe_print_for_user for
printing them to a pretty_printer. The patch uses ptrdiff_type_node for
byte offsets.
Doing so fixes the crashes, whilst appearing to preserve the behavior of
-Wanalyzer-out-of-bounds in my testing.
gcc/analyzer/ChangeLog:
PR analyzer/110902
PR analyzer/110928
PR analyzer/111305
PR analyzer/111441
* access-diagram.cc: Include "analyzer/analyzer-selftests.h".
(get_access_size_str): Reimplement for conversion of
implmementation of bit_size_expr from tree to const svalue &. Use
svalue::maybe_print_for_user rather than tree printing routines.
(remove_ssa_names): Make non-static.
(bit_size_expr::get_formatted_str): Rename to...
(bit_size_expr::maybe_get_formatted_str): ...this, adding "model"
param and converting return type to a unique_ptr. Update for
conversion of implementation of bit_size_expr from tree to
const svalue &. Use svalue::maybe_print_for_user rather than tree
printing routines.
(bit_size_expr::print): Rename to...
(bit_size_expr::maybe_print_for_user): ...this, adding "model"
param and converting return type to bool. Update for
conversion of implementation of bit_size_expr from tree to
const svalue &. Use svalue::maybe_print_for_user rather than tree
printing routines.
(bit_size_expr::maybe_get_as_bytes): Add "mgr" param and convert
return type from tree to const svalue *; reimplement.
(access_range::access_range): Call strip_types when on region_offset
intializations.
(access_range::get_size): Update for conversion of implementation
of bit_size_expr from tree to const svalue &.
(access_operation::get_valid_bits): Pass manager to access_range
ctor.
(access_operation::maybe_get_invalid_before_bits): Likewise.
(access_operation::maybe_get_invalid_after_bits): Likewise.
(boundaries::add): Likewise.
(bit_to_table_map::populate): Add "mgr" param and pass it to
access_range ctor.
(access_diagram_impl::access_diagram_impl): Pass manager to
bit_to_table_map::populate.
(access_diagram_impl::maybe_add_gap): Use svalue rather than tree
for symbolic bit offsets. Port to new bit_size_expr
representation.
(access_diagram_impl::add_valid_vs_invalid_ruler): Port to new
bit_size_expr representation.
(selftest::assert_eq_typeless_integer): New.
(ASSERT_EQ_TYPELESS_INTEGER): New.
(selftest::test_bit_size_expr_to_bytes): New.
(selftest::analyzer_access_diagram_cc_tests): New.
* access-diagram.h (class bit_size_expr): Reimplement, converting
implementation from tree to const svalue &.
(access_range::access_range): Add "mgr" param. Call strip_types
on region_offset initializations.
(access_range::get_size): Update decl for reimplementation.
* analyzer-selftests.cc (selftest::run_analyzer_selftests): Call
selftest::analyzer_access_diagram_cc_tests.
* analyzer-selftests.h
(selftest::analyzer_checker_script_cc_tests): Delete this stray
typo.
(selftest::analyzer_access_diagram_cc_tests): New decl.
* analyzer.h (print_expr_for_user): New decl.
(calc_symbolic_bit_offset): Update decl for reimplementation.
(strip_types): New decls.
(remove_ssa_names): New decl.
* bounds-checking.cc (strip_types): New.
(region_model::check_symbolic_bounds): Use typeless svalues.
* region-model-manager.cc
(region_model_manager::get_or_create_constant_svalue): Add "type"
param. Add overload with old signature.
(region_model_manager::get_or_create_int_cst): Support type being
NULL_TREE.
(region_model_manager::maybe_fold_unaryop): Gracefully reject folding
of casts to NULL_TREE type.
(get_code_for_cast): Use NOP_EXPR for "casting" svalues to
NULL_TREE type.
(region_model_manager::get_or_create_cast): Support "casting"
svalues to NULL_TREE type.
(region_model_manager::maybe_fold_binop): Don't crash on inputs
with NULL_TREE type. Handle folding of binops on constants with
NULL_TREE type. Add missing cast from PR analyzer/110902.
Support enough folding of other ops on NULL_TREE type to support
bounds checking.
(region_model_manager::get_or_create_const_fn_result_svalue):
Remove assertion that type is nonnull.
* region-model-manager.h
(region_model_manager::get_or_create_constant_svalue): Add
overloaded decl taking a type.
(region_model_manager::maybe_fold_binop): Make public.
(region_model_manager::constants_map_t): Use
constant_svalue::key_t for the key, rather than just tree.
* region-model.cc (print_expr_for_user): New.
(selftest::test_array_2): Handle casts.
* region.cc (region_offset::calc_symbolic_bit_offset): Return
const svalue & rather than tree, and reimplement accordingly.
(region::calc_offset): Use ptrdiff_type_node for types of byte
offsets.
(region::maybe_print_for_user): New.
(element_region::get_relative_symbolic_offset): Use NULL_TREE for
types of bit offsets.
(offset_region::get_bit_offset): Likewise.
(sized_region::get_bit_size_sval): Likewise for bit sizes.
* region.h (region::maybe_print_for_user): New decl.
* svalue.cc (class auto_add_parens): New.
(svalue::maybe_print_for_user): New.
(svalue::cmp_ptr): Support typeless constant svalues.
(tristate_from_boolean_tree_node): New, taken from...
(constant_svalue::eval_condition): ...here. Handle comparison of
typeless integer svalue constants.
* svalue.h (svalue::maybe_print_for_user): New decl.
(class constant_svalue): Support the type of the svalue being
NULL_TREE.
(struct default_hash_traits<constant_svalue::key_t>): New.
François Dumont [Sun, 17 Mar 2024 18:06:55 +0000 (19:06 +0100)]
libstdc++: Fix N3344 behavior on _Safe_iterator::_M_can_advance
We shall be able to advance from a 0 offset a value-initialized iterator.
libstdc++-v3/ChangeLog:
* include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
Accept 0 offset advance on value-initialized iterator.
* testsuite/23_containers/vector/debug/n3644.cc: New test case.
Unordered container local_iterator range shall not contain any singular
iterator unless both iterators are both value-initialized.
libstdc++-v3/ChangeLog:
* include/debug/safe_local_iterator.tcc
(_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
_M_singular checks.
* testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
Recent PR111822 fix implemented REG_EH_REGION note copying to a STV converted
preload instruction in general_scalar_chain::convert_op. However, the same
issue remains in timode_scalar_chain::convert_op. Instead of copying the
newly introduced code to timode_scalar_chain::convert_op, the patch unifies
both functions to a common function.
PR target/111822
gcc/ChangeLog:
* config/i386/i386-features.cc (smode_convert_cst): New function
to handle SImode, DImode and TImode immediates, generalized from
timode_convert_cst.
(timode_convert_cst): Remove.
(scalar_chain::convert_op): Unify from
general_scalar_chain::convert_op and timode_scalar_chain::convert_op.
(general_scalar_chain::convert_op): Remove.
(timode_scalar_chain::convert_op): Remove.
(timode_scalar_chain::convert_insn): Update the call to
renamed timode_convert_cst.
* config/i386/i386-features.h (class scalar_chain):
Redeclare convert_op as protected class member.
(class general_calar_chain): Remove convert_op.
(class timode_scalar_chain): Ditto.
gcc/testsuite/ChangeLog:
* g++.target/i386/pr111822.C (dg-do): Compile only for ia32 targets.
(dg-options): Add -march=x86-64.
testsuite: Turn errors back into warnings in arm/acle/cde-mve-error-2.c
Since commit 2c3db94d9fd ("c: Turn int-conversion warnings into
permerrors") the test fails with errors such as:
FAIL: gcc.target/arm/acle/cde-mve-error-2.c -O0 (test for errors, line 32)
FAIL: gcc.target/arm/acle/cde-mve-error-2.c -O0 (test for errors, line 33)
FAIL: gcc.target/arm/acle/cde-mve-error-2.c -O0 (test for errors, line 34)
FAIL: gcc.target/arm/acle/cde-mve-error-2.c -O0 (test for errors, line 35)
⋮
FAIL: gcc.target/arm/acle/cde-mve-error-2.c -O0 (test for excess errors)
There's a total of 1016 errors. Here's a sample of the excess errors:
Excess errors:
/path/gcc.git/gcc/testsuite/gcc.target/arm/acle/cde-mve-error-2.c:117:31: error: passing argument 2 of '__builtin_arm_vcx1qv16qi' makes integer from pointer without a cast [-Wint-conversion]
/path/gcc.git/gcc/testsuite/gcc.target/arm/acle/cde-mve-error-2.c:119:3: error: passing argument 3 of '__builtin_arm_vcx1qav16qi' makes integer from pointer without a cast [-Wint-conversion]
/path/gcc.git/gcc/testsuite/gcc.target/arm/acle/cde-mve-error-2.c:121:3: error: passing argument 3 of '__builtin_arm_vcx2qv16qi' makes integer from pointer without a cast [-Wint-conversion]
/path/gcc.git/gcc/testsuite/gcc.target/arm/acle/cde-mve-error-2.c:123:3: error: passing argument 3 of '__builtin_arm_vcx2qv16qi' makes integer from pointer without a cast [-Wint-conversion]
The test expects these messages to be warnings, not errors. My first
try was to change it to expect them as errors instead. This didn't
work, IIUC because the error prevents the compiler from continuing
processing the file and thus other errors which are expected by the
test don't get emitted.
Therefore, add -fpermissive so that the test behaves as it did
previously. Because of the additional line in the header, the line
numbers of the expected warnings don't match anymore so replace them
with ".-1" as suggested by Richard Earnshaw.
Tested on armv8l-linux-gnueabihf.
gcc/testsuite/ChangeLog:
* gcc.target/arm/acle/cde-mve-error-2.c: Add -fpermissive. Use
relative offsets for line numbers.
Jonathan Wakely [Fri, 1 Mar 2024 16:46:29 +0000 (16:46 +0000)]
gcc_update: Add missing generated files
I'm seeing errors for --enable-maintainer-mode builds due to incorrectly
regenerating these files. They should be touched by gcc_update so they
aren't regenerated incorrectly.
contrib/ChangeLog:
* gcc_update: Add more generated files in libcc1, lto-plugin,
fixincludes, and libstdc++-v3.
Nathaniel Shead [Fri, 15 Mar 2024 13:11:25 +0000 (00:11 +1100)]
testsuite: Fix excess errors for new modules testcases on powerpc [PR114320]
On some configurations, PowerPC emits -Wpsabi warnings when using IEEE
long doubles on a machine configured with IBM long double by default.
This patch suppresses these warnings for this testcase.
Georg-Johann Lay [Mon, 18 Mar 2024 07:50:02 +0000 (08:50 +0100)]
avr.md - Tweak xor insn constraints.
xor insn can handle some more values without the requirement of a
scratch register. This patch adds a new constraint alternative for
such values. The output function avr_out_bitop already handles
these cases, so no change is needed there.
As the tests assume that strndup() is visible (only part of
POSIX.1-2008) define the guard to ensure that it's visible. Currently,
glibc appears to always have this defined in C++, newlib does not.
Without this patch, fails like this can be seen:
Testing analyzer/strndup-1.c, -std=c++98
.../strndup-1.c: In function 'void test_1(const char*)':
.../strndup-1.c:11:13: error: 'strndup' was not declared in this scope; did you mean 'strncmp'?
.../strndup-1.c: In function 'void test_2(const char*)':
.../strndup-1.c:16:13: error: 'strndup' was not declared in this scope; did you mean 'strncmp'?
.../strndup-1.c: In function 'void test_3(const char*)':
.../strndup-1.c:21:13: error: 'strndup' was not declared in this scope; did you mean 'strncmp'?
hppa: Improve handling of REG+D addresses when generating PA 2.0 code
In looking at PR 112415, it became clear that improvements could be
made in the handling of loads and stores using REG+D addresses. A
change in 2002 conflated two issues:
1) We can't generate insns with 14-bit displacements before reload
completes when generating PA 1.x code since floating-point loads and
stores only support 5-bit offsets in PA 1.x.
2) The GNU ELF 32-bit linker lacks relocation support for PA 2.0
floating point instructions with 14-bit displacements. These
relocations affect instructions with symbolic references.
The result of the change was to block creation of PA 2.0 instructions
with 14-bit REG_D displacements for SImode, DImode, SFmode and DFmode
on the GNU linux target before reload. This was unnecessary as these
instructions don't need relocation.
This change revises the INT14_OK_STRICT define to allow creation
of instructions with 14-bit REG+D addresses before reload when
generating PA 2.0 code.
2024-03-17 John David Anglin <danglin@gcc.gnu.org>
gcc/ChangeLog:
PR rtl-optimization/112415
* config/pa/pa.cc (pa_emit_move_sequence): Revise condition
for symbolic memory operands.
(pa_legitimate_address_p): Revise LO_SUM condition.
* config/pa/pa.h (INT14_OK_STRICT): Revise define. Move
comment about GNU linker to predicates.md.
* config/pa/predicates.md (floating_point_store_memory_operand):
Revise condition for symbolic memory operands. Update
comment.
François Dumont [Thu, 14 Mar 2024 21:13:57 +0000 (22:13 +0100)]
libstdc++: Implement N3644 on _Safe_iterator<> [PR114316]
Consider range of value-initialized iterators as valid and empty.
libstdc++-v3/ChangeLog:
PR libstdc++/114316
* include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
First check if both iterators are value-initialized before checking if
singular.
* testsuite/23_containers/set/debug/114316.cc: New test case.
* testsuite/23_containers/vector/debug/114316.cc: New test case.
Gaius Mulley [Sun, 17 Mar 2024 14:49:23 +0000 (14:49 +0000)]
PR modula2/114296 ICE when attempting to create a constant set with a variable element
This patch corrects the virtual token creation for the aggregate constant
and also corrects tokens for constructor components.
gcc/m2/ChangeLog:
PR modula2/114296
* gm2-compiler/M2ALU.mod (ElementsSolved): Add tokenno parameter.
Add constant checks and generate error messages.
(EvalSetValues): Pass tokenno parameter to ElementsSolved.
* gm2-compiler/M2LexBuf.mod (stop): New procedure.
(MakeVirtualTok): Call stop if caret = BadTokenNo.
* gm2-compiler/M2Quads.def (BuildNulExpression): Add tokpos
parameter.
(BuildSetStart): Ditto.
(BuildEmptySet): Ditto.
(BuildConstructorEnd): Add startpos parameter.
(BuildTypeForConstructor): Add tokpos parameter.
* gm2-compiler/M2Quads.mod (BuildNulExpression): Add tokpos
parameter and push tokpos to the quad stack.
(BuildSetStart): Add tokpos parameter and push tokpos.
(BuildSetEnd): Rewrite.
(BuildEmptySet): Add tokpos parameter and push tokpos with
the set type.
(BuildConstructorStart): Pop typepos.
(BuildConstructorEnd): Add startpos parameter.
Create valtok from startpos and cbratokpos.
(BuildTypeForConstructor): Add tokpos parameter.
* gm2-compiler/M2Range.def (InitAssignmentRangeCheck): Rename
d to des and e to expr.
Add destok and exprtok parameters.
* gm2-compiler/M2Range.mod (InitAssignmentRangeCheck): Rename
d to des and e to expr.
Add destok and exprtok parameters.
Save destok and exprtok into range record.
(FoldAssignment): Pass exprtok to TryDeclareConstant.
* gm2-compiler/P3Build.bnf (ComponentValue): Rewrite.
(Constructor): Rewrite.
(ConstSetOrQualidentOrFunction): Rewrite.
(SetOrQualidentOrFunction): Rewrite.
* gm2-compiler/PCBuild.bnf (ConstSetOrQualidentOrFunction): Rewrite.
(SetOrQualidentOrFunction): Rewrite.
* gm2-compiler/PHBuild.bnf (Constructor): Rewrite.
(ConstSetOrQualidentOrFunction): Rewrite.
gcc/testsuite/ChangeLog:
PR modula2/114296
* gm2/pim/fail/badtype2.mod: New test.
Jakub Jelinek [Sat, 16 Mar 2024 14:16:33 +0000 (15:16 +0100)]
i386: Fix setup of incoming varargs for (...) functions which return large aggregates [PR114175]
The c23-stdarg-6.c testcase I've added recently apparently works fine with
-O0 but aborts with -O1 and higher on x86_64-linux.
The problem is in setup of incoming varargs.
Like function.cc before r14-9249 even ix86_setup_incoming_varargs assumes
that TYPE_NO_NAMED_ARGS_STDARG_P don't have any named arguments and there
is nothing to advance, but that is not the case for (...) functions
returning by hidden reference which have one such artificial argument.
If the setup_incoming_varargs hook is called from the
if (TYPE_NO_NAMED_ARGS_STDARG_P (TREE_TYPE (fndecl))
&& fnargs.is_empty ())
{
struct assign_parm_data_one data = {};
assign_parms_setup_varargs (&all, &data, false);
}
spot, i.e. where there is no hidden return argument passed, arg.type
is always NULL, while when it is called in the
if (cfun->stdarg && !DECL_CHAIN (parm))
assign_parms_setup_varargs (&all, &data, false);
spot, even when it is TYPE_NO_NAMED_ARGS_STDARG_P arg.type will be non-NULL.
The tree-stdarg.cc pass in f in c23-stdarg-6.cc at -O1 or higher determines
that va_arg is used on integral types at most twice (loads 2 words),
and because ix86_setup_incoming_varargs doesn't advance, the code saves
just the %rdi and %rsi registers to the save area. But that isn't correct,
it should save %rsi and %rdx because %rdi is the hidden return argument.
With -O0 tree-stdarg.cc doesn't attempt to optimize and we save all the
registers, so it works fine in that case.
Now, I think we'll need the same fix also on
aarch64, alpha, arc, csky, ia64, loongarch, mips, mmix, nios2, riscv, visium
which have pretty much the similarly looking snippet in their hooks
changed by the r13-3549 commit.
Then arm, epiphany, fr30, frv, ft32, m32r, mcore, nds32, rs6000, sh
have different changes but most likely need something similar too.
I don't have access to most of those, could test aarch64 and rs6000 I guess.
2024-03-16 Jakub Jelinek <jakub@redhat.com>
PR target/114175
* config/i386/i386.cc (ix86_setup_incoming_varargs): Only skip
ix86_function_arg_advance for TYPE_NO_NAMED_ARGS_STDARG_P functions
if arg.type is NULL.
* gcc.dg/c23-stdarg-7.c: New test.
* gcc.dg/c23-stdarg-8.c: New test.
Jakub Jelinek [Sat, 16 Mar 2024 14:15:29 +0000 (15:15 +0100)]
bitint: Fix up stores to large/huge _BitInt bitfields [PR114329]
The verifier requires BIT_FIELD_REFs with INTEGRAL_TYPE_P first operand
to have mode precision. In most cases for the large/huge _BitInt bitfield
stores the code uses bitfield representatives, which are typically arrays
of chars, but if the bitfield starts at byte boundary on big endian,
the code uses as nlhs in lower_mergeable_store COMPONENT_REF of the
bitfield FIELD_DECL instead, which is fine for the limb accesses,
but when used for the most significant limb can result in invalid
BIT_FIELD_REF because the first operand then has BITINT_TYPE and
usually VOIDmode.
The following patch adds a helper method for the 4 creatikons of
BIT_FIELD_REF which when needed adds a VIEW_CONVERT_EXPR.
2024-03-16 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/114329
* gimple-lower-bitint.cc (struct bitint_large_huge): Declare
build_bit_field_ref method.
(bitint_large_huge::build_bit_field_ref): New method.
(bitint_large_huge::lower_mergeable_stmt): Use it.
Nathaniel Shead [Tue, 12 Mar 2024 12:24:27 +0000 (23:24 +1100)]
c++: Check module attachment instead of just purview when necessary [PR112631]
Block-scope declarations of functions or extern values are not allowed
when attached to a named module. Similarly, class member functions are
not inline if attached to a named module. However, in both these cases
we currently only check if the declaration is within the module purview;
it is possible for such a declaration to occur within the module purview
but not be attached to a named module (e.g. in an 'extern "C++"' block).
This patch makes the required adjustments.
PR c++/112631
gcc/cp/ChangeLog:
* cp-tree.h (named_module_attach_p): New function.
* decl.cc (start_decl): Check for attachment not purview.
(grokmethod): Likewise.
gcc/testsuite/ChangeLog:
* g++.dg/modules/block-decl-1_a.C: New test.
* g++.dg/modules/block-decl-1_b.C: New test.
* g++.dg/modules/block-decl-2.C: New test.
git://gcc.gnu.org / gcc.git / log