platform/upstream/gcc.git
2 years agoc++: improve failed constexpr assume diagnostic
Jason Merrill [Mon, 24 Oct 2022 21:17:24 +0000 (17:17 -0400)]
c++: improve failed constexpr assume diagnostic

I noticed that we were printing "the comparison reduces to (x == 42)" when
we should be able to give the value of x.  Fixed by doing the same
evaluation in diagnose_failing_condition that we already do in
find_failing_clause.

gcc/cp/ChangeLog:

* constexpr.cc (fold_operand): New function.
(find_failing_clause_r): Add const.
(find_failing_clause): Add const.
(diagnose_failing_condition): Add ctx parameter.
(cxx_eval_internal_function): Pass it.
* semantics.cc (diagnose_failing_condition): Move to constexpr.cc.
* cp-tree.h: Adjust.

gcc/testsuite/ChangeLog:

* g++.dg/cpp23/attr-assume2.C: Expect constant values.

2 years agors6000: Add CCANY; replace <un>signed by <mode:CCANY>
Segher Boessenkool [Mon, 24 Oct 2022 18:17:24 +0000 (18:17 +0000)]
rs6000: Add CCANY; replace <un>signed by <mode:CCANY>

This is in preparation for adding CCFP, and maybe CCEQ, and whatever
other CC mode we may want later.  CCANY is used for CC mode consumers
that actually can take any of the four CR field bits.

2022-10-25  Segher Boessenkool  <segher@kernel.crashing.org>

* config/rs6000/rs6000.md (CCEITHER): Delete.
(CCANY): New.
(un): Delete.
(isel_<un>signed_<GPR:mode>): Rename to...
(isel_<CCANY:mode>_<GPR:mode>): ... this.  Adjust.
(*isel_reversed_<un>signed_<GPR:mode>): Rename to...
(*isel_reversed_<CCANY:mode>_<GPR:mode>): ... this.  Adjust.
(setbc_<un>signed_<GPR:mode>): Rename to...
(setbc_<CCANY:mode>_<GPR:mode>C): ... this.  Adjust."
(*setbcr_<un>signed_<GPR:mode>): Rename to ...
(*setbcr_<CCANY:mode>_<GPR:mode>): ... this.  Adjust.
(*setnbc_<un>signed_<GPR:mode>): Rename to ...
(*setnbc_<CCANY:mode>_<GPR:mode>): ... this.  Adjust.
(*setnbcr_<un>signed_<GPR:mode>): Rename to ...
(*setnbcr_<CCANY:mode>_<GPR:mode>): ... this.  Adjust.
(eq<mode>3 for GPR): Adjust.
(ne<mode>3 for GPR): Adjust.
* config/rs6000/rs6000-string.cc (do_isel): Adjust.
* config/rs6000/rs6000.cc (rs6000_emit_int_cmove): Adjust.

2 years agotree-optimization/107176 - SCEV analysis association issue
Richard Biener [Mon, 24 Oct 2022 06:52:12 +0000 (08:52 +0200)]
tree-optimization/107176 - SCEV analysis association issue

The following fixes a wrong-code issue caused by SCEV analysis
associating an addition due trying to use tail-recursion in
follow_ssa_edge_expr.  That causes us to apply a conversion at
the wrong point and thus miscompute the scalar evolution of
an induction variable.  This reverts the PR66375 fix and
revisits the PR42512 fix by keeping the evolution symbolic
up to the point we process the first linear function when
we then can check for the supported cases and substitute the
whole symbolic expression with the built chrec substituting
the proper initial value.

To simplify passing around things and to clarify scoping of
the involved functions this change wraps the SCEV DFS walking
code into a class.

PR tree-optimization/107176
PR tree-optimization/66375
PR tree-optimization/42512
* tree-scalar-evolution.cc (follow_ssa_edge_expr): Revert
the PR66375 fix, do not not associate PLUS_EXPR to be able
to use tail-recursion.
(follow_ssa_edge_binary): Likewise.
(interpret_loop_phi): Revert PR42512 fix, do not throw
away analyze_evolution_in_loop result after the fact.
(follow_ssa_edge_expr): When reaching halting_phi initalize
the evolution to the symbolic value of the PHI result.
(add_to_evolution_1): When adding the first evolution verify
we can handle the expression wrapping the symbolic evolution
and replace that in full using the initial condition.
(class scev_dfs): New, contains ...
(follow_ssa_edge_expr, follow_ssa_edge_binary,
follow_ssa_edge_in_condition_phi_branch,
follow_ssa_edge_in_condition_phi,
follow_ssa_edge_inner_loop_phi,
add_to_evolution, add_to_evolution_1): ... these with
loop and halting_phi arguments in class data.
(scev_dfs::get_ev): New toplevel DFS entry, start with
a chrec_dont_know evolution.
(analyze_evolution_in_loop): Use scev_dfs.

* gcc.dg/torture/pr107176.c: New testcase.

2 years agoRelax assertion in profiler
Eric Botcazou [Tue, 25 Oct 2022 10:20:33 +0000 (12:20 +0200)]
Relax assertion in profiler

This assertion in branch_prob:

  if (bb == ENTRY_BLOCK_PTR_FOR_FN (cfun)->next_bb)
    {
      location_t loc = DECL_SOURCE_LOCATION (current_function_decl);
      gcc_checking_assert (!RESERVED_LOCATION_P (loc));

had been correct until the fix for PR debug/101598 was installed.

gcc/
* profile.cc (branch_prob): Be prepared for ignored functions with
DECL_SOURCE_LOCATION set to UNKNOWN_LOCATION.

gcc/testsuite:
* gnat.dg/specs/coverage1.ads: New test.
* gnat.dg/specs/variant_part.ads: Minor tweak.
* gnat.dg/specs/weak1.ads: Add dg directive.

2 years agoMove NOP stripping in SCEV analysis
Richard Biener [Tue, 25 Oct 2022 08:04:56 +0000 (10:04 +0200)]
Move NOP stripping in SCEV analysis

The following moves a pair of STRIP_USELESS_TYPE_CONVERSIONS to
where it belongs and adds a comment on why we handle GENERIC
there at all.

* tree-scalar-evolution.cc (follow_ssa_edge_expr): Move
STRIP_USELESS_TYPE_CONVERSIONS to where it matters.

2 years agoRemove znver4 instruction reservations
Tejas Joshi [Fri, 21 Oct 2022 15:35:39 +0000 (21:05 +0530)]
Remove znver4 instruction reservations

This reverts the changes made to znver.md in:
commit bf3b532b524ecacb3202ab2c8af419ffaaab7cff

2022-10-21  Tejas Joshi <TejasSanjay.Joshi@amd.com>

gcc/ChangeLog:

* common/config/i386/i386-common.cc (processor_alias_table): Use
CPU_ZNVER3 for znver4.
* config/i386/znver.md: Remove znver4 reservations.

2 years agogimplify: Fix comment typos
Jakub Jelinek [Tue, 25 Oct 2022 08:45:29 +0000 (10:45 +0200)]
gimplify: Fix comment typos

While looking at gimple_boolify for PR107368, I've noticed 2 comment
typos.

2022-10-25  Jakub Jelinek  <jakub@redhat.com>

* gimplify.cc (gimple_boolify): Fix comment typos, prduce -> produce
and There -> These.

2 years agogimplify: Call gimple_boolify on IFN_ASSUME argument [PR107368]
Jakub Jelinek [Tue, 25 Oct 2022 08:42:59 +0000 (10:42 +0200)]
gimplify: Call gimple_boolify on IFN_ASSUME argument [PR107368]

The following testcase ICEs in C, because assume attribute condition
has int type rather than bool and the gimplification into GIMPLE_ASSUME
assigns it into a bool variable.

Fixed by calling gimple_boolify.

2022-10-25  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/107368
* gimplify.cc (gimplify_call_expr): For complex IFN_ASSUME
conditions call gimple_boolify on the condition.

* gcc.dg/attr-assume-5.c: New test.

2 years agoMIPS: add builtime option for -mcompact-branches
YunQiang Su [Sat, 8 May 2021 09:45:54 +0000 (05:45 -0400)]
MIPS: add builtime option for -mcompact-branches

For R6+ target, it allows to configure gcc to use compact branches only
if avaiable.

gcc/ChangeLog:
* config.gcc: add -with-compact-branches=policy build option.
* doc/install.texi: Likewise.
* config/mips/mips.h: Likewise.

2 years agoMIPS: Not trigger error for pre-R6 and -mcompact-branches=always
YunQiang Su [Sat, 8 May 2021 09:45:53 +0000 (05:45 -0400)]
MIPS: Not trigger error for pre-R6 and -mcompact-branches=always

For MIPSr6, we may wish to use compact-branches only.
Currently, we have to use `always' option, while it is mark as conflict
with pre-R6.
  cc1: error: unsupported combination: ‘mips32r2’ -mcompact-branches=always
Just ignore -mcompact-branches=always for pre-R6.

This patch also defines
    __mips_compact_branches_never
    __mips_compact_branches_always
    __mips_compact_branches_optimal
predefined macros

gcc/ChangeLog:
* config/mips/mips.cc (mips_option_override): not trigger error
for compact-branches=always for pre-R6.
* config/mips/mips.h (TARGET_RTP_PIC): not trigger error for
compact-branches=always for pre-R6.
(TARGET_CB_NEVER): Likewise.
(TARGET_CB_ALWAYS): Likewise.
(struct mips_cpu_info): define macros for compact branch policy.
* doc/invoke.texi: Document "always" with pre-R6.

gcc/testsuite/ChangeLog:
* gcc.target/mips/compact-branches-1.c: add isa_rev>=6.
* gcc.target/mips/mips.exp: don't add -mipsXXr6 option for
-mcompact-branches=always. It is usable for pre-R6 now.
* gcc.target/mips/compact-branches-8.c: New test.
* gcc.target/mips/compact-branches-9.c: New test.

2 years agogimplify: Don't add GIMPLE_ASSUME if errors were seen [PR107369]
Jakub Jelinek [Tue, 25 Oct 2022 08:39:20 +0000 (10:39 +0200)]
gimplify: Don't add GIMPLE_ASSUME if errors were seen [PR107369]

The FEs emit errors about jumps into assume attribute conditions,
but when we add GIMPLE_ASSUME for the condition which is reachable
through those jumps, we can run into cfg verification diagnostics.

Fixed by throwing the IFN_ASSUME away during gimplification if
seen_error () - like we already do for -O0.  GIMPLE_ASSUME in the middle-end
is a pure optimization thing and if errors were reported, the optimizations
will not be beneficial for anything.

2022-10-25  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/107369
* gimplify.cc (gimplify_call_expr): If seen_error, handle complex
IFN_ASSUME the same as for -O0.

* gcc.dg/attr-assume-4.c: New test.
* g++.dg/cpp23/attr-assume8.C: New test.

2 years agoMIPS: fix building on multiarch platform
YunQiang Su [Wed, 21 Sep 2022 11:13:03 +0000 (11:13 +0000)]
MIPS: fix building on multiarch platform

On platforms that support multiarch, such as Debian,
the filesystem hierarchy doesn't fellow the old Irix style:
lib & lib/<multiarch> for native
lib64 for N64 on N32/O32 systems
lib32 for N32 on N64/O32 systems
libo32 for O32 on N64/N32 systems

Thus we cannot
 #define STANDARD_STARTFILE_PREFIX_1
 #define STANDARD_STARTFILE_PREFIX_2
on N32 or N64 systems, else collect2 won't look for libraries
on /lib/<multiarch>.

gcc/ChangeLog:
* configure.ac: AC_DEFINE(ENABLE_MULTIARCH, 1)
* configure: Regenerated.
* config.in: Regenerated.
* config/mips/mips.h: don't define STANDARD_STARTFILE_PREFIX_1
  if ENABLE_MULTIARCH is defined.
* config/mips/t-linux64: define correct multiarch path when
  multiarch is enabled.

2 years agotree-optimization/100756 - niter analysis and folding
Richard Biener [Mon, 24 Oct 2022 07:51:32 +0000 (09:51 +0200)]
tree-optimization/100756 - niter analysis and folding

niter analysis, specifically the part trying to simplify the computed
maybe_zero condition against the loop header copying condition, is
confused by us now simplifying

  _15 = n_8(D) * 4;
  if (_15 > 0)

to

  _15 = n_8(D) * 4;
  if (n_8(D) > 0)

which is perfectly sound at the point we do this transform.  One
solution might be to involve ranger in this simplification, another
is to be more aggressive when expanding expressions - the condition
we try to simplify is _15 > 0, so all we need is expanding that
to n_8(D) * 4 > 0.

The following does just that.

PR tree-optimization/100756
* tree-ssa-loop-niter.cc (expand_simple_operations): Also
expand multiplications by invariants.

* gcc.dg/vect/pr100756.c: New testcase.

2 years agors6000/test: Support vect_long_long effective target
Kewen Lin [Tue, 25 Oct 2022 05:18:45 +0000 (00:18 -0500)]
rs6000/test: Support vect_long_long effective target

Currently effective target vect_long_long doesn't have
power specific check, I think it's an oversight.  This
is to add the support which checks for has_arch_pwr8,
since we set rs6000_vector_unit[V2DImode] as:
  (TARGET_P8_VECTOR) ? VECTOR_P8_VECTOR : VECTOR_NONE;
it means its full support starts from ISA 2.07.
Although ISA 2.06 has some instructions like lxvd2x
and stxvd2x etc., it's used for testing, checking for
ISA 2.07 is more sensitive.

gcc/testsuite/ChangeLog:

* lib/target-supports.exp (check_effective_target_vect_long_long): Add
support for powerpc*-*-*.

2 years agovect: Fix wrong shift_n after widening on BE [PR107338]
Kewen Lin [Tue, 25 Oct 2022 05:18:08 +0000 (00:18 -0500)]
vect: Fix wrong shift_n after widening on BE [PR107338]

As PR107338 shows, with the use of widening loads, the
container_type can become a wider type, it causes us to
get wrong shift_n since the BIT_FIELD_REF offset actually
becomes bigger on BE.  Taking the case in PR107338 as
example, at the beginning the container type is short and
BIT_FIELD_REF offset is 8 and size is 4, with unpacking to
wider type int, the high 16 bits are zero, by viewing it
as type int, its offset actually becomes to 24.  So the
shift_n should be 4 (32 - 24 - 4) instead of 20 (32 - 8
- 4).

I noticed that if we move shift_n calculation early
before the adjustments for widening loads (container type
change), it's based on all the stuffs of the original
container, the shfit_n calculated there is exactly what
we want, it can be independent of widening.  Besides, I
add prec adjustment together with the current adjustments
for widening loads, although prec's subsequent uses don't
require this change for now, since the container type gets
changed, we should keep the corresponding prec consistent.

PR tree-optimization/107338

gcc/ChangeLog:

* tree-vect-patterns.cc (vect_recog_bitfield_ref_pattern): Move
shfit_n calculation before the adjustments for widening loads.

2 years agoriscv: fix cross compiler
Martin Liska [Tue, 25 Oct 2022 04:58:17 +0000 (06:58 +0200)]
riscv: fix cross compiler

Move riscv_get_valid_option_values out of

Fixes:
riscv/riscv-common.cc:1748:40: error: ‘riscv_get_valid_option_values’ was not declared in this scope

gcc/ChangeLog:

* common/config/riscv/riscv-common.cc
  (riscv_get_valid_option_values): Get out of ifdef.

2 years agoi386: fix pedantic warning
Martin Liska [Tue, 25 Oct 2022 04:16:03 +0000 (06:16 +0200)]
i386: fix pedantic warning

PR target/107364

gcc/ChangeLog:

* common/config/i386/i386-cpuinfo.h (enum processor_vendor):
Fix pedantic warning.

2 years agoDaily bump.
GCC Administrator [Tue, 25 Oct 2022 00:17:33 +0000 (00:17 +0000)]
Daily bump.

2 years agoanalyzer: fix ICE on va_copy [PR107349]
David Malcolm [Mon, 24 Oct 2022 20:41:09 +0000 (16:41 -0400)]
analyzer: fix ICE on va_copy [PR107349]

gcc/analyzer/ChangeLog:
PR analyzer/107349
* varargs.cc (get_va_copy_arg): Fix the non-pointer case.

gcc/testsuite/ChangeLog:
PR analyzer/107349
* gcc.dg/analyzer/stdarg-1-ms_abi.c (pr107349): New.
* gcc.dg/analyzer/stdarg-1-sysv_abi.c (pr107349): New.
* gcc.dg/analyzer/stdarg-1.c (pr107349): New.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2 years agodiagnostics: fix ICE in sarif output with NULL filename [PR107366]
Martin Liska [Mon, 24 Oct 2022 20:40:00 +0000 (16:40 -0400)]
diagnostics: fix ICE in sarif output with NULL filename [PR107366]

gcc/ChangeLog:
PR analyzer/107366
* diagnostic-format-sarif.cc
(sarif_builder::maybe_make_physical_location_object): Gracefully
reject locations with NULL filename.

gcc/testsuite/ChangeLog:
PR analyzer/107366
* gcc.dg/analyzer/sarif-pr107366.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2 years agoanalyzer: handle (NULL == &VAR) [PR107345]
David Malcolm [Mon, 24 Oct 2022 20:38:23 +0000 (16:38 -0400)]
analyzer: handle (NULL == &VAR) [PR107345]

gcc/analyzer/ChangeLog:
PR analyzer/107345
* region-model.cc (region_model::eval_condition_without_cm):
Ensure that constants are on the right-hand side before checking
for them.

gcc/testsuite/ChangeLog:
PR analyzer/107345
* gcc.dg/analyzer/pr107345.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2 years agoanalyzer: simplify sm_state_map lookup
David Malcolm [Mon, 24 Oct 2022 20:38:23 +0000 (16:38 -0400)]
analyzer: simplify sm_state_map lookup

gcc/analyzer/ChangeLog:
* engine.cc (impl_region_model_context::get_malloc_map): Replace
with...
(impl_region_model_context::get_state_map_by_name): ...this.
(impl_region_model_context::get_fd_map): Delete.
(impl_region_model_context::get_taint_map): Delete.
* exploded-graph.h (impl_region_model_context::get_fd_map):
Delete.
(impl_region_model_context::get_malloc_map): Delete.
(impl_region_model_context::get_taint_map): Delete.
(impl_region_model_context::get_state_map_by_name): New.
* region-model.h (region_model_context::get_state_map_by_name):
New vfunc.
(region_model_context::get_fd_map): Convert from vfunc to
function.
(region_model_context::get_malloc_map): Likewise.
(region_model_context::get_taint_map): Likewise.
(noop_region_model_context::get_state_map_by_name): New.
(noop_region_model_context::get_fd_map): Delete.
(noop_region_model_context::get_malloc_map): Delete.
(noop_region_model_context::get_taint_map): Delete.
(region_model_context_decorator::get_state_map_by_name): New.
(region_model_context_decorator::get_fd_map): Delete.
(region_model_context_decorator::get_malloc_map): Delete.
(region_model_context_decorator::get_taint_map): Delete.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2 years agoanalyzer: handle "pipe" and "pipe2" [PR106300]
David Malcolm [Mon, 24 Oct 2022 20:38:22 +0000 (16:38 -0400)]
analyzer: handle "pipe" and "pipe2" [PR106300]

gcc/analyzer/ChangeLog:
PR analyzer/106300
* engine.cc (impl_region_model_context::get_fd_map): New.
* exploded-graph.h (impl_region_model_context::get_fd_map): New
decl.
* region-model-impl-calls.cc (region_model::impl_call_pipe): New.
* region-model.cc (region_model::update_for_int_cst_return): New,
based on...
(region_model::update_for_zero_return): ...this.  Reimplement in
terms of the former.
(region_model::on_call_pre): Handle "pipe" and "pipe2".
(region_model::on_call_post): Likewise.
* region-model.h (region_model::impl_call_pipe): New decl.
(region_model::update_for_int_cst_return): New decl.
(region_model::mark_as_valid_fd): New decl.
(region_model_context::get_fd_map): New pure virtual fn.
(noop_region_model_context::get_fd_map): New.
(region_model_context_decorator::get_fd_map): New.
* sm-fd.cc: Include "analyzer/program-state.h".
(fd_state_machine::describe_state_change): Handle transitions from
start state to valid states.
(fd_state_machine::mark_as_valid_fd): New.
(fd_state_machine::on_stmt): Add missing return for "creat".
(region_model::mark_as_valid_fd): New.

gcc/ChangeLog:
PR analyzer/106300
* doc/invoke.texi (Static Analyzer Options): Add "pipe" and
"pipe2" to the list of functions the analyzer has hardcoded
knowledge of.

gcc/testsuite/ChangeLog:
PR analyzer/106300
* gcc.dg/analyzer/pipe-1.c: New test.
* gcc.dg/analyzer/pipe-glibc.c: New test.
* gcc.dg/analyzer/pipe-manpages.c: New test.
* gcc.dg/analyzer/pipe2-1.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2 years agotree: add build_string_literal overloads
Jason Merrill [Thu, 20 Oct 2022 17:51:37 +0000 (13:51 -0400)]
tree: add build_string_literal overloads

Simplify several calls to build_string_literal by not requiring redundant
strlen or IDENTIFIER_* in the caller.

I also corrected a wrong comment on IDENTIFIER_LENGTH.

gcc/ChangeLog:

* tree.h (build_string_literal): New one-argument overloads that
take tree (identifier) and const char *.
* builtins.cc (fold_builtin_FILE)
(fold_builtin_FUNCTION)
* gimplify.cc (gimple_add_init_for_auto_var)
* vtable-verify.cc (verify_bb_vtables): Simplify calls.

gcc/cp/ChangeLog:

* cp-gimplify.cc (fold_builtin_source_location)
* vtable-class-hierarchy.cc (register_all_pairs): Simplify calls to
build_string_literal.
(build_string_from_id): Remove.

2 years agolibgomp/nvptx: Prepare for reverse-offload callback handling, resolve spurious SIGSEGVs
Thomas Schwinge [Mon, 24 Oct 2022 19:11:47 +0000 (21:11 +0200)]
libgomp/nvptx: Prepare for reverse-offload callback handling, resolve spurious SIGSEGVs

Per commit r13-3460-g131d18e928a3ea1ab2d3bf61aa92d68a8a254609
"libgomp/nvptx: Prepare for reverse-offload callback handling",
I'm seeing a lot of libgomp execution test regressions.  Random
example, 'libgomp.c-c++-common/error-1.c':

    [...]
      GOMP_OFFLOAD_run: kernel main$_omp_fn$0: launch [(teams: 1), 1, 1] [(lanes: 32), (threads: 8), 1]

    Thread 1 "a.out" received signal SIGSEGV, Segmentation fault.
    0x00007ffff793b87d in GOMP_OFFLOAD_run (ord=<optimized out>, tgt_fn=<optimized out>, tgt_vars=<optimized out>, args=<optimized out>) at [...]/source-gcc/libgomp/plugin/plugin-nvptx.c:2127
    2127            if (__atomic_load_n (&ptx_dev->rev_data->fn, __ATOMIC_ACQUIRE) != 0)
    (gdb) print ptx_dev
    $1 = (struct ptx_device *) 0x6a55a0
    (gdb) print ptx_dev->rev_data
    $2 = (struct rev_offload *) 0xffffffff00000000
    (gdb) print ptx_dev->rev_data->fn
    Cannot access memory at address 0xffffffff00000000

libgomp/
* plugin/plugin-nvptx.c (nvptx_open_device): Initialize
'ptx_dev->rev_data'.

2 years agox86: fix VENDOR_MAX enum value
Martin Liska [Mon, 24 Oct 2022 13:34:39 +0000 (15:34 +0200)]
x86: fix VENDOR_MAX enum value

PR target/107364

gcc/ChangeLog:

* common/config/i386/i386-cpuinfo.h (enum processor_vendor):
  Reorder enum values as BUILTIN_VENDOR_MAX should not point
  in the middle of the valid enum values.

2 years agoc++: ICE with invalid structured bindings [PR107276]
Marek Polacek [Thu, 20 Oct 2022 19:55:28 +0000 (15:55 -0400)]
c++: ICE with invalid structured bindings [PR107276]

This test ICEs in C++23 because we reach the new code in do_auto_deduction:

30468   if (cxx_dialect >= cxx23
30469       && context == adc_return_type
30470       && (!AUTO_IS_DECLTYPE (auto_node)
30471           || !unparenthesized_id_or_class_member_access_p (init))
30472       && (r = treat_lvalue_as_rvalue_p (maybe_undo_parenthesized_ref (init),
30473                                         /*return*/true)))

where 'init' is "VIEW_CONVERT_EXPR<<<< error >>>>(y)", and then the move
in treat_lvalue_as_rvalue_p returns error_mark_node whereupon
set_implicit_rvalue_p crashes.

I don't think such V_C_Es are useful so let's not create them.  But that
won't fix the ICE so I'm checking the return value of move.  A structured
bindings decl can have an error type, that is set in cp_finish_decomp:

 8908           TREE_TYPE (first) = error_mark_node;

therefore I think treat_lvalue_as_rvalue_p just needs to cope.

PR c++/107276

gcc/cp/ChangeLog:

* typeck.cc (treat_lvalue_as_rvalue_p): Check the return value of move.

gcc/ChangeLog:

* tree.cc (maybe_wrap_with_location): Don't create a location wrapper
when the type is erroneous.

gcc/testsuite/ChangeLog:

* g++.dg/cpp2a/decomp4.C: New test.

2 years agoc, c++: Fix up excess precision handling of scalar_to_vector conversion [PR107358]
Jakub Jelinek [Mon, 24 Oct 2022 15:53:16 +0000 (17:53 +0200)]
c, c++: Fix up excess precision handling of scalar_to_vector conversion [PR107358]

As mentioned earlier in the C++ excess precision support mail, the following
testcase is broken with excess precision both in C and C++ (though just in C++
it was triggered in real-world code).
scalar_to_vector is called in both FEs after the excess precision promotions
(or stripping of EXCESS_PRECISION_EXPR), so we can then get invalid
diagnostics that say float vector + float involves truncation (on ia32
from long double to float).

The following patch fixes that by calling scalar_to_vector on the operands
before the excess precision promotions, let scalar_to_vector just do the
diagnostics (it does e.g. fold_for_warn so it will fold
EXCESS_PRECISION_EXPR around REAL_CST to constants etc.) but will then
do the actual conversions using the excess precision promoted operands
(so say if we have vector double + (float + float) we don't actually do
vector double + (float) ((long double) float + (long double) float)
but
vector double + (double) ((long double) float + (long double) float)

2022-10-24  Jakub Jelinek  <jakub@redhat.com>

PR c++/107358
gcc/c/
* c-typeck.cc (build_binary_op): Pass operands before excess precision
promotions to scalar_to_vector call.
gcc/cp/
* typeck.cc (cp_build_binary_op): Pass operands before excess precision
promotions to scalar_to_vector call.
gcc/testsuite/
* c-c++-common/pr107358.c: New test.
* g++.dg/cpp1y/pr68180.C: Remove -fexcess-precision=fast from
dg-options.

2 years agolibgomp/nvptx: Prepare for reverse-offload callback handling
Tobias Burnus [Mon, 24 Oct 2022 14:58:43 +0000 (16:58 +0200)]
libgomp/nvptx: Prepare for reverse-offload callback handling

This patch adds a stub 'gomp_target_rev' in the host's target.c, which will
later handle the reverse offload.
For nvptx, it adds support for forwarding the offload gomp_target_ext call
to the host by setting values in a struct on the device and querying it on
the host - invoking gomp_target_rev on the result.

include/ChangeLog:

* cuda/cuda.h (enum CUdevice_attribute): Add
CU_DEVICE_ATTRIBUTE_UNIFIED_ADDRESSING.
(CU_MEMHOSTALLOC_DEVICEMAP): Define.
(cuMemHostAlloc): Add prototype.

libgomp/ChangeLog:

* config/nvptx/icv-device.c (GOMP_DEVICE_NUM_VAR): Remove
'static' for this variable.
* config/nvptx/libgomp-nvptx.h: New file.
* config/nvptx/target.c: Include it.
(GOMP_ADDITIONAL_ICVS): Declare extern var.
(GOMP_REV_OFFLOAD_VAR): Declare var.
(GOMP_target_ext): Handle reverse offload.
* libgomp-plugin.h (GOMP_PLUGIN_target_rev): New prototype.
* libgomp-plugin.c (GOMP_PLUGIN_target_rev): New, call ...
* target.c (gomp_target_rev): ... this new stub function.
* libgomp.h (gomp_target_rev): Declare.
* libgomp.map (GOMP_PLUGIN_1.4): New; add GOMP_PLUGIN_target_rev.
* plugin/cuda-lib.def (cuMemHostAlloc): Add.
* plugin/plugin-nvptx.c: Include libgomp-nvptx.h.
(struct ptx_device): Add rev_data member.
(nvptx_open_device): Remove async_engines query, last used in
r10-304-g1f4c5b9b; add unified-address assert check.
(GOMP_OFFLOAD_get_num_devices): Claim unified address
support.
(GOMP_OFFLOAD_load_image): Free rev_fn_table if no
offload functions exist. Make offload var available
on host and device.
(rev_off_dev_to_host_cpy, rev_off_host_to_dev_cpy): New.
(GOMP_OFFLOAD_run): Handle reverse offload.

2 years ago[AArch64] Improve immediate expansion [PR106583]
Wilco Dijkstra [Mon, 24 Oct 2022 14:14:14 +0000 (15:14 +0100)]
[AArch64] Improve immediate expansion [PR106583]

Improve immediate expansion of immediates which can be created from a
bitmask immediate and 2 MOVKs.  Simplify, refactor and improve efficiency
of bitmask checks.  Move various immediate handling functions together
to avoid forward declarations.

This reduces the number of 4-instruction immediates in SPECINT/FP by 10-15%.

gcc/

PR target/106583
* config/aarch64/aarch64.cc (aarch64_internal_mov_immediate)
Add support for a bitmask immediate with 2 MOVKs.
(aarch64_check_bitmask): New function after refactorization.
(aarch64_bitmask_imm): Simplify replication of small modes.
Split function into 64-bit only version for efficiency.
(aarch64_move_imm): Move near other immediate functions.
(aarch64_uimm12_shift): Likewise.
(aarch64_clamp_to_uimm12_shift): Likewise.
(aarch64_movk_shift): Likewise.
(aarch64_replicate_bitmask_imm): Likewise.
(aarch64_and_split_imm1): Likewise.
(aarch64_and_split_imm2): Likewise.
(aarch64_and_bitmask_imm): Likewise.
(aarch64_movw_imm): Likewise.

gcc/testsuite/
PR target/106583
* gcc.target/aarch64/pr106583.c: Add new test.

2 years agoc++: Fix up constexpr handling of char/signed char/short pre/post inc/decrement ...
Jakub Jelinek [Mon, 24 Oct 2022 14:25:29 +0000 (16:25 +0200)]
c++: Fix up constexpr handling of char/signed char/short pre/post inc/decrement [PR105774]

signed char, char or short int pre/post inc/decrement are represented by
normal {PRE,POST}_{INC,DEC}REMENT_EXPRs in the FE and only gimplification
ensures that the {PLUS,MINUS}_EXPR is done in unsigned version of those
types:
    case PREINCREMENT_EXPR:
    case PREDECREMENT_EXPR:
    case POSTINCREMENT_EXPR:
    case POSTDECREMENT_EXPR:
      {
        tree type = TREE_TYPE (TREE_OPERAND (*expr_p, 0));
        if (INTEGRAL_TYPE_P (type) && c_promoting_integer_type_p (type))
          {
            if (!TYPE_OVERFLOW_WRAPS (type))
              type = unsigned_type_for (type);
            return gimplify_self_mod_expr (expr_p, pre_p, post_p, 1, type);
          }
        break;
      }
This means during constant evaluation we need to do it similarly (either
using unsigned_type_for or using widening to integer_type_node).
The following patch does the latter.

2022-10-24  Jakub Jelinek  <jakub@redhat.com>

PR c++/105774
* constexpr.cc (cxx_eval_increment_expression): For signed types
that promote to int, evaluate PLUS_EXPR or MINUS_EXPR in int type.

* g++.dg/cpp1y/constexpr-105774.C: New test.

2 years agoc-family: Implicitly return zero from main even on freestanding
Arsen Arsenović [Fri, 14 Oct 2022 10:04:51 +0000 (12:04 +0200)]
c-family: Implicitly return zero from main even on freestanding

... unless marked noreturn.

This should not get in anyone's way, but should permit the use of main()
in freestanding more easily, especially for writing test cases that
should work both in freestanding and hosted modes.

gcc/c/ChangeLog:

* c-decl.cc (finish_function): Ignore hosted when deciding
whether to implicitly return zero, but check noreturn.
* c-objc-common.cc (c_missing_noreturn_ok_p): Loosen the
requirements to just MAIN_NAME_P when hosted, or `int main'
otherwise.

gcc/cp/ChangeLog:

* cp-tree.h (DECL_MAIN_P): Move most logic, besides the hosted
check, from here...
(DECL_MAIN_ANY_P): ... to here, so that it can be reused ...
(DECL_MAIN_FREESTANDING_P): ... here, with an additional
constraint on (hosted OR return type == int)
* decl.cc (finish_function): Use DECL_MAIN_FREESTANDING_P
instead of DECL_MAIN_P, to loosen the hosted requirement, but
check noreturn, before adding implicit returns.

gcc/testsuite/ChangeLog:

* gcc.dg/noreturn-4.c: Removed.
* g++.dg/freestanding-main.C: New test.
* g++.dg/freestanding-nonint-main.C: New test.
* gcc.dg/freestanding-main.c: New test.
* gcc.dg/freestanding-nonint-main.c: New test.

2 years ago[PR tree-optimization/107355] Handle NANs in abs range-op entry.
Aldy Hernandez [Mon, 24 Oct 2022 10:37:25 +0000 (12:37 +0200)]
[PR tree-optimization/107355] Handle NANs in abs range-op entry.

The problem here is that the threader is coming up with a path where
the only valid result is a NAN.  When the abs op1_range entry is
trying to add the negative posibility, it attempts to get the bounds
of the working range.  NANs don't have bounds so they need to be
special cased.

PR tree-optimization/107355

gcc/ChangeLog:

* range-op-float.cc (foperator_abs::op1_range): Handle NAN.

gcc/testsuite/ChangeLog:

* gcc.dg/tree-ssa/pr107355.c: New test.

2 years agoOpenMP: Fix reverse offload GOMP_TARGET_REV IFN corner cases [PR107236]
Tobias Burnus [Mon, 24 Oct 2022 13:19:00 +0000 (15:19 +0200)]
OpenMP: Fix reverse offload GOMP_TARGET_REV IFN corner cases [PR107236]

For 'target parallel' and similarly nested directives, cgraph_node's
calls_declare_variant_alt was not set in the parent region node but in
cfun->decl. Hence, pass_omp_device_lower did not process handle the
internal function GOMP_TARGET_REV. - Solution is to set it to the
DECL_CONTEXT, which is set in adjust_context_and_scope.

The cgraph_node::create_clone issue is exposed with -O2 for the existing
libgomp.fortran/reverse-offload-1.f90.

PR middle-end/107236

gcc/ChangeLog:
* omp-expand.cc (expand_omp_target): Set calls_declare_variant_alt
in DECL_CONTEXT and not to cfun->decl.
* cgraphclones.cc (cgraph_node::create_clone): Copy also the
node's calls_declare_variant_alt value.

gcc/testsuite/ChangeLog:
* gfortran.dg/gomp/target-device-ancestor-6.f90: New test.

2 years agoRISC-V: Support --target-help for -mcpu/-mtune
Kito Cheng [Fri, 30 Sep 2022 02:05:23 +0000 (10:05 +0800)]
RISC-V: Support --target-help for -mcpu/-mtune

gcc/ChangeLog:

* common/config/riscv/riscv-common.cc (riscv_tunes): New.
(riscv_get_valid_option_values): New.
(TARGET_GET_VALID_OPTION_VALUES): New.
* config/riscv/riscv-cores.def (RISCV_TUNE): New, define options
for tune here.
(RISCV_CORE): Fix comment.
* config/riscv/riscv.cc (riscv_tune_info_table): Move definition to
riscv-cores.def.

2 years agoCheck HONOR_NANS instead of flag_finite_math_only in frange:verify_range.
Aldy Hernandez [Sun, 23 Oct 2022 14:51:17 +0000 (16:51 +0200)]
Check HONOR_NANS instead of flag_finite_math_only in frange:verify_range.

[Jakub and other FP experts, would this be OK, or am I missing
something?]

Vax does not seem to have !flag_finite_math_only, but float_type_node
does not HONOR_NANS.  The check in frange::verify_range dependend on
flag_finite_math_only, which is technically not correct since
frange::set_varying() checks HONOR_NANS instead of
flag_finite_math_only.

I'm actually getting tired of flag_finite_math_only and
!flag_finite_math_only discrepancies in the selftests (Vax and rx-elf
come to mind).  I think we should just test both alternatives in the
selftests as in this patch.

We could also check flag_finite_math_only=0 with a float_type_node
that does not HONOR_NANs, but I have no idea how to twiddle
FLOAT_MODE_FORMAT temporarily, and that may be over thinking it.

PR tree-optimization/107365

gcc/ChangeLog:

* value-range.cc (frange::verify_range): Predicate NAN check in
VARYING range on HONOR_NANS instead of flag_finite_math_only.
(range_tests_floats): Same.
(range_tests_floats_various): New.
(range_tests): Call range_tests_floats_various.

2 years agolto: Always quote path to touch
Torbjörn SVENSSON [Fri, 21 Oct 2022 10:29:13 +0000 (12:29 +0200)]
lto: Always quote path to touch

When generating the makefile, make sure that the paths are quoted so
that a native Windows path works within Cygwin.

Without this patch, this error is reported by the DejaGNU test suite:

make: [T:\ccMf0kI3.mk:3: T:\ccGEvdDp.ltrans0.ltrans.o] Error 1 (ignored)

The generated makefile fragment without the patch:

T:\ccGEvdDp.ltrans0.ltrans.o:
  @T:\build\bin\arm-none-eabi-g++.exe '-xlto' ... '-o' 'T:\ccGEvdDp.ltrans0.ltrans.o' 'T:\ccGEvdDp.ltrans0.o'
  @-touch -r T:\ccGEvdDp.ltrans0.o T:\ccGEvdDp.ltrans0.o.tem > /dev/null 2>&1 && mv T:\ccGEvdDp.ltrans0.o.tem T:\ccGEvdDp.ltrans0.o
.PHONY: all
all: \
  T:\ccGEvdDp.ltrans0.ltrans.o

With the patch, the touch line would be replace with:

  @-touch -r "T:\ccGEvdDp.ltrans0.o" "T:\ccGEvdDp.ltrans0.o.tem" > /dev/null 2>&1 && mv "T:\ccGEvdDp.ltrans0.o.tem" "T:\ccGEvdDp.ltrans0.o"

gcc/ChangeLog:

* lto-wrapper.cc: Quote paths in makefile.

Co-Authored-By: Yvan ROUX <yvan.roux@foss.st.com>
Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
2 years agoRISC-V: Support (set (mem) (const_poly_int))
Ju-Zhe Zhong [Mon, 24 Oct 2022 02:03:12 +0000 (10:03 +0800)]
RISC-V: Support (set (mem) (const_poly_int))

gcc/ChangeLog:

* config/riscv/riscv.cc (riscv_legitimize_move): Support (set (mem) (const_poly_int)).

2 years agoRISC-V: Replace CONSTEXPR with constexpr
Ju-Zhe Zhong [Mon, 24 Oct 2022 02:20:28 +0000 (10:20 +0800)]
RISC-V: Replace CONSTEXPR with constexpr

Move away from the pre-C++11 compatibility macro CONSTEXPR.
This patch is inspired by aarch64:
https://gcc.gnu.org/pipermail/gcc-patches/2022-October/603974.html.

gcc/ChangeLog:

* config/riscv/riscv-vector-builtins-bases.cc: Replace CONSTEXPR
with constexpr throughout.
* config/riscv/riscv-vector-builtins-shapes.cc (SHAPE): Likewise.
* config/riscv/riscv-vector-builtins.cc
(struct registered_function_hasher): Likewise.
* config/riscv/riscv-vector-builtins.h (struct rvv_arg_type_info):
Likewise.

2 years agoRISC-V: Remove unused TI/TF vector modes.
Ju-Zhe Zhong [Mon, 24 Oct 2022 02:05:24 +0000 (10:05 +0800)]
RISC-V: Remove unused TI/TF vector modes.

gcc/ChangeLog:

* config/riscv/riscv-vector-switch.def (ENTRY): Remove unused TI/TF vector modes.

2 years agoRISC-V: Fix REG_CLASS_CONTENTS.
Ju-Zhe Zhong [Mon, 24 Oct 2022 01:39:16 +0000 (09:39 +0800)]
RISC-V: Fix REG_CLASS_CONTENTS.

Include V_REGS for ALL_REGS.

gcc/ChangeLog:

* config/riscv/riscv.h (REG_CLASS_CONTENTS): Fix ALL_REGS.

2 years agoDaily bump.
GCC Administrator [Mon, 24 Oct 2022 00:16:31 +0000 (00:16 +0000)]
Daily bump.

2 years agolibgcc: Update 'gthr-mcf.h' to include a dedicated header for libobjc
LIU Hao [Sat, 22 Oct 2022 09:31:46 +0000 (17:31 +0800)]
libgcc: Update 'gthr-mcf.h' to include a dedicated header for libobjc

'libobjc/thr.c' includes 'gthr.h'. While all the other gthread headers
have `#ifdef _LIBOBJC` checks, and provide a different set of inline
functions, I think having one header provide two completely unrelated
set of APIs is unsatisfactory, complicates maintenance, and hinders
further development.

This commit references a new header for libobjc, and adds a copyright
notice, as in other headers.

libgcc/ChangeLog:
* config/i386/gthr-mcf.h: Include 'gthr_libobjc.h' when building
libobjc, instead of 'gthr.h'

2 years agoDaily bump.
GCC Administrator [Sun, 23 Oct 2022 00:16:38 +0000 (00:16 +0000)]
Daily bump.

2 years agoFix uninitialized variable warnings.
Michael Eager [Sat, 22 Oct 2022 23:23:16 +0000 (16:23 -0700)]
Fix uninitialized variable warnings.

Check for use of previously uninitialized variables; call gcc_unreachable().
Replace abort() with gcc_unreachable().

2022-10-22  Michael Eager  <eager@eagercon.com>

gcc/
* config/microblaze/microblaze.cc
(microblaze_legitimize_address): Initialize 'reg' to NULL, check for NULL.
(microblaze_address_insns): Replace abort() with gcc_unreachable().
(print_operand_address): Same.
(microblaze_expand_move): Initialize 'p1' to NULL, check for NULL.
(get_branch_target): Replace abort() with gcc_unreachable().

2 years agoUpdate selftest such that [-Inf, +Inf] is always VARYING for -ffinite-math-only.
Aldy Hernandez [Sat, 22 Oct 2022 14:22:50 +0000 (16:22 +0200)]
Update selftest such that [-Inf, +Inf] is always VARYING for -ffinite-math-only.

[-Inf, +Inf] +-NAN gets normalized as VARYING.  There is a test that
drops the NAN possibility, and tests that the range is no longer
VARYING but [-Inf, +Inf].  However, for -ffinite-math-only targets
(Vax, RX, etc) the range would still be VARYING because the VARYING
range never had a NAN to begin with.  This fixes the test.

I have a precommit hook that does self-tests with
-fno-finite-math-only, -ffinite-math-only, and -ffast-math as a sanity
check, but my precommit hook last week was disabled because there was
a tree-ssa.exp in mainline failing which was throwing off my scripts.
My apologies.

gcc/ChangeLog:

* value-range.cc (range_tests_floats): Predicate [-Inf, +Inf] test
with !flag_finite_math_only.

2 years agoxtensa: Make register A0 allocable for the CALL0 ABI
Takayuki 'January June' Suwa [Fri, 21 Oct 2022 22:46:13 +0000 (07:46 +0900)]
xtensa: Make register A0 allocable for the CALL0 ABI

This patch offers an additional allocable register by RA for the CALL0
ABI.

> Register a0 holds the return address upon entry to a function, but
> unlike the windowed register ABI, it is not reserved for this purpose
> and may hold other values after the return address has been saved.
  - Xtensa ISA Reference Manual,
                   8.1.2 "CALL0 Register Usage and Stack Layout" [p.589]

gcc/ChangeLog:

* config/xtensa/xtensa.cc (xtensa_conditional_register_usage):
Remove register A0 from FIXED_REGS if the CALL0 ABI.
(xtensa_expand_epilogue): Change to emit '(use (reg:SI A0_REG))'
unconditionally after restoring callee-saved registers for
sibling-call functions, in order to prevent misleading that
register A0 is free to use.

2 years agoDaily bump.
GCC Administrator [Sat, 22 Oct 2022 00:17:11 +0000 (00:17 +0000)]
Daily bump.

2 years agoFortran: Add missing TKR initialization to class variables [PR100097, PR100098]
José Rui Faustino de Sousa [Tue, 18 Oct 2022 20:29:59 +0000 (22:29 +0200)]
Fortran: Add missing TKR initialization to class variables [PR100097, PR100098]

gcc/fortran/ChangeLog:

PR fortran/100097
PR fortran/100098
* trans-array.cc (gfc_trans_class_array): New function to
initialize class descriptor's TKR information.
* trans-array.h (gfc_trans_class_array): Add function prototype.
* trans-decl.cc (gfc_trans_deferred_vars): Add calls to the new
function for both pointers and allocatables.

gcc/testsuite/ChangeLog:

PR fortran/100097
PR fortran/100098
* gfortran.dg/PR100097.f90: New test.
* gfortran.dg/PR100098.f90: New test.

2 years agoi386: Fix up BFmode comparisons in conditional moves [PR107322]
Jakub Jelinek [Fri, 21 Oct 2022 16:34:37 +0000 (18:34 +0200)]
i386: Fix up BFmode comparisons in conditional moves [PR107322]

As the testcase shows, when cbranchbf4/cstorebf4 patterns are defined,
we can get ICEs for conditional moves.
The problem is that the generic conditional move expansion just calls
prepare_cmp_insn which just checks that such a cbranch<mode>4 exists
and returns directly such comparison and passes it down to the conditional
move optabs.
The following patch fixes it by punting if the comparisons aren't
ix86_fp_comparison_operator (to tell the generic code it should separately
compare) and to handle the promotion of BFmode comparison operands to
SFmode such that comparison is performed in SFmode.

2022-10-21  Jakub Jelinek  <jakub@redhat.com>

PR target/107322
* config/i386/i386-expand.cc (ix86_prepare_fp_compare_args): For
BFmode comparisons promote arguments to SFmode and recurse.
(ix86_expand_int_movcc, ix86_expand_fp_movcc): Return false early
if comparison operands are BFmode and operands[1] is not
ix86_fp_comparison_operator.

* gcc.target/i386/pr107322.c: New test.

2 years agoc++: Don't shortcut TREE_CONSTANT vector type CONSTRUCTORs in cxx_eval_constant_expre...
Jakub Jelinek [Fri, 21 Oct 2022 16:04:54 +0000 (18:04 +0200)]
c++: Don't shortcut TREE_CONSTANT vector type CONSTRUCTORs in cxx_eval_constant_expression [PR107295]

The excess precision support broke building skia (dependency of firefox)
on ia32 (it has something like the a constexpr variable), but as the other
cases show, it is actually a preexisting problem if one uses casts from
constants with wider floating point types.
The problem is that cxx_eval_constant_expression tries to short-cut
processing of TREE_CONSTANT CONSTRUCTORs if they satisfy
reduced_constant_expression_p - instead of calling cxx_eval_bare_aggregate
on them it just verifies flags and if they are TREE_CONSTANT even after
that, just fold.
Now, on the testcase we have a TREE_CONSTANT CONSTRUCTOR containing
TREE_CONSTANT NOP_EXPR of REAL_CST.  And, fold, which isn't recursive,
doesn't optimize that into VECTOR_CST, while later on we are only able
to optimize VECTOR_CST arithmetics, not arithmetics with vector
CONSTRUCTORs.
The following patch fixes that by rejecting CONSTRUCTORs with vector type
in reduced_constant_expression_p regardless of whether they have
CONSTRUCTOR_NO_CLEARING set or not, folding result in cxx_eval_bare_aggregate
even if nothing has changed but it wasn't non-constant and removing folding
from the TREE_CONSTANT reduced_constant_expression_p short-cut.

2022-10-21  Jakub Jelinek  <jakub@redhat.com>

PR c++/107295
* constexpr.cc (reduced_constant_expression_p) <case CONSTRUCTOR>:
Return false for VECTOR_TYPE CONSTRUCTORs even without
CONSTRUCTOR_NO_CLEARING set on them.
(cxx_eval_bare_aggregate): If constant but !changed, fold before
returning VECTOR_TYPE_P CONSTRUCTOR.
(cxx_eval_constant_expression) <case CONSTRUCTOR>: Don't fold
TREE_CONSTANT CONSTRUCTOR, just return it.

* g++.dg/ext/vector42.C: New test.

2 years agoEnable AMD znver4 support and add instruction reservations
Tejas Joshi [Tue, 28 Jun 2022 11:03:53 +0000 (16:33 +0530)]
Enable AMD znver4 support and add instruction reservations

2022-09-28  Tejas Joshi <TejasSanjay.Joshi@amd.com>

gcc/ChangeLog:

* common/config/i386/cpuinfo.h (get_amd_cpu): Recognize znver4.
* common/config/i386/i386-common.cc (processor_names): Add znver4.
(processor_alias_table): Add znver4 and modularize old znvers.
* common/config/i386/i386-cpuinfo.h (processor_subtypes):
AMDFAM19H_ZNVER4.
* config.gcc (x86_64-*-* |...): Likewise.
* config/i386/driver-i386.cc (host_detect_local_cpu): Let
-march=native recognize znver4 cpus.
* config/i386/i386-c.cc (ix86_target_macros_internal): Add znver4.
* config/i386/i386-options.cc (m_ZNVER4): New definition.
(m_ZNVER): Include m_ZNVER4.
(processor_cost_table): Add znver4.
* config/i386/i386.cc (ix86_reassociation_width): Likewise.
* config/i386/i386.h (processor_type): Add PROCESSOR_ZNVER4.
(PTA_ZNVER1): New definition.
(PTA_ZNVER2): Likewise.
(PTA_ZNVER3): Likewise.
(PTA_ZNVER4): Likewise.
* config/i386/i386.md (define_attr "cpu"): Add znver4 and rename
md file.
* config/i386/x86-tune-costs.h (znver4_cost): New definition.
* config/i386/x86-tune-sched.cc (ix86_issue_rate): Add znver4.
(ix86_adjust_cost): Likewise.
* config/i386/znver1.md: Rename to znver.md.
* config/i386/znver.md: Add new reservations for znver4.
* doc/extend.texi: Add details about znver4.
* doc/invoke.texi: Likewise.

gcc/testsuite/ChangeLog:

* gcc.target/i386/funcspec-56.inc: Handle new march.
* g++.target/i386/mv29.C: Likewise.

2 years agolibstdc++: respect with-{headers, newlib} for default hosted value
Arsen Arsenović [Wed, 12 Oct 2022 19:47:35 +0000 (21:47 +0200)]
libstdc++: respect with-{headers, newlib} for default hosted value

This saves us a build flag when building for freestanding targets.

libstdc++-v3/ChangeLog:

* acinclude.m4: Default hosted to off if building without
headers and without newlib.
* configure: Regenerate.

2 years agolibstdc++: Fix std::move_only_function for incomplete parameter types
Jonathan Wakely [Tue, 18 Oct 2022 19:49:42 +0000 (20:49 +0100)]
libstdc++: Fix std::move_only_function for incomplete parameter types

The std::move_only_function::__param_t alias template attempts to
optimize argument passing for the invoker, by passing by rvalue
reference for types that are non-trivial or large. However, the
precondition for is_trivally_copyable makes it unsuitable for using
here, and can cause ODR violations. Just use is_scalar instead, and pass
all class types (even small, trivial ones) by value.

libstdc++-v3/ChangeLog:

* include/bits/mofunc_impl.h (move_only_function::__param_t):
Use __is_scalar instead of is_trivially_copyable.
* testsuite/20_util/move_only_function/call.cc: Check parameters
involving incomplete types.

2 years agoRestore 'libgomp.oacc-c-c++-common/nvptx-sese-1.c' SESE regions checking [PR107195...
Thomas Schwinge [Sat, 15 Oct 2022 22:07:20 +0000 (00:07 +0200)]
Restore 'libgomp.oacc-c-c++-common/nvptx-sese-1.c' SESE regions checking [PR107195, PR107344]

That is, adjust for optimization introduced with recent
commit r13-3217-gc4d15dddf6b9eacb36f535807ad2ee364af46e04
"[PR107195] Set range to zero when nonzero mask is 0", where GCC now
understands that after 'r *= 2;', 'r & 1' will never hold here, and thus
transforms/optimizes/"disturbs" the original code such that GCC/nvptx's later
"Neuter whole SESE regions" optimization no longer is applicable to it:

    UNSUPPORTED: libgomp.oacc-c/../libgomp.oacc-c-c++-common/nvptx-sese-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none  -O0
    PASS: libgomp.oacc-c/../libgomp.oacc-c-c++-common/nvptx-sese-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none  -O2  (test for excess errors)
    PASS: libgomp.oacc-c/../libgomp.oacc-c-c++-common/nvptx-sese-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none  -O2  execution test
    [-PASS:-]{+FAIL:+} libgomp.oacc-c/../libgomp.oacc-c-c++-common/nvptx-sese-1.c -DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none  -O2   scan-nvptx-none-offload-rtl-dump mach "SESE regions:.* [0-9]+{[0-9]+->[0-9]+(\\.[0-9]+)+}"

Same for C++.

It's unclear to me if this is an actual "problem", which optimization is "more
important", so I've filed PR107344 "GCC/nvptx SESE region optimization" to
capture this question, and here restore what we intend to be testing (to my
understanding) in 'libgomp.oacc-c-c++-common/nvptx-sese-1.c'.

PR tree-optimization/107195
PR target/107344
libgomp/
* testsuite/libgomp.oacc-c-c++-common/nvptx-sese-1.c: Restore SESE
regions checking.

2 years agoAdd 'gcc.dg/tree-ssa/pr107195-3.c' [PR107195]
Thomas Schwinge [Mon, 17 Oct 2022 07:10:03 +0000 (09:10 +0200)]
Add 'gcc.dg/tree-ssa/pr107195-3.c' [PR107195]

... to display optimization performed as of recent
commit r13-3217-gc4d15dddf6b9eacb36f535807ad2ee364af46e04
"[PR107195] Set range to zero when nonzero mask is 0".

PR tree-optimization/107195
gcc/testsuite/
* gcc.dg/tree-ssa/pr107195-3.c: New.

2 years agotree-optimization/107323 - loop distribution partition ordering issue
Richard Biener [Fri, 21 Oct 2022 07:45:44 +0000 (09:45 +0200)]
tree-optimization/107323 - loop distribution partition ordering issue

The following reverts part of the PR94125 fix which causes us to
use a bogus partition ordering after applying versioning for
alias to the testcase in PR107323.  Instead PR94125 is fixed by
appropriately considering to be merged SCCs when skipping edges
we want to ignore because of the alias versioning.

PR tree-optimization/107323
* tree-loop-distribution.cc (pg_unmark_merged_alias_ddrs):
New function.
(loop_distribution::break_alias_scc_partitions): Revert
postorder save/restore from the PR94125 fix.  Instead
make sure to not ignore edges from SCCs we are going to
merge.

* gcc.dg/tree-ssa/pr107323.c: New testcase.

2 years agoRISC-V: Add type attribute for atomic instructions.
Monk Chiang [Fri, 21 Oct 2022 05:01:59 +0000 (13:01 +0800)]
RISC-V: Add type attribute for atomic instructions.

gcc/ChangeLog:

* config/riscv/riscv.md: Add atomic type attribute.
* config/riscv/sync.md: Add atomic type for atomic instructions.

2 years agomatch.pd: Fix up gcc.dg/pr54346.c on i686-linux [PR54346]
Jakub Jelinek [Fri, 21 Oct 2022 07:16:44 +0000 (09:16 +0200)]
match.pd: Fix up gcc.dg/pr54346.c on i686-linux [PR54346]

The pr54346.c testcase FAILs on i686-linux (without -msse*) for multiple
reasons.  One is the trivial missing -Wno-psabi which the following patch
adds, but that isn't enough.  The thing is that without native vector
support, we have VEC_PERM_EXPRs in the IL and are actually considering
the nested VEC_PERM_EXPRs into one VEC_PERM_EXPR optimization, but punt
because can_vec_perm_const_p (result_mode, op_mode, sel2, false) is false.

Such a test makes sense to prevent "optimizing" two VEC_PERM_EXPRs
that can be handled by the backend natively into one VEC_PERM_EXPR
that can't be handled.  But if both of the original VEC_PERM_EXPRs
can't be handled natively either, having just one VEC_PERM_EXPR that will be
lowered by generic vec lowering is IMHO still better than 2.
Or even if we trade just one VEC_PERM_EXPR that can't be handled plus
one that can to one that can't be handled.

Also, removing the testcase's executable permissions...

2022-10-21  <jakub@redhat.com>

PR tree-optimization/54346
* match.pd ((vec_perm (vec_perm@0 @1 @2 VECTOR_CST) @0 VECTOR_CST)):
Optimize nested VEC_PERM_EXPRs even if target can't handle the
new one provided we don't increase number of VEC_PERM_EXPRs the
target can't handle.

* gcc.dg/pr54346.c: Add -Wno-psabi to dg-options.

2 years agoc++: Fix up mangling ICE with void{} [PR106863]
Jakub Jelinek [Fri, 21 Oct 2022 07:00:41 +0000 (09:00 +0200)]
c++: Fix up mangling ICE with void{} [PR106863]

We ICE on the following testcase during mangling, finish_compound_literal
returns for void{} void_node and the mangler doesn't handle it.
Handling void_node in the mangler seems problematic to me, because
we don't know for which case it has been created.
The following patch arranges to mangle it as other compound literals
with no operands, so it demangles as void{}, by returning a void type
COMPOUND_LITERAL_P with no elements if processing_template_decl.
Otherwise it keeps returning void_node.

2022-10-21  Jakub Jelinek  <jakub@redhat.com>

PR c++/106863
* semantics.cc (finish_compound_literal): For void{}, if
processing_template_decl return a COMPOUND_LITERAL_P
CONSTRUCTOR rather than void_node.

* g++.dg/cpp0x/dr2351-2.C: New test.

2 years agoDon't build readline/libreadline.a, when --with-system-readline is supplied
Дилян Палаузов [Thu, 20 Oct 2022 15:05:04 +0000 (17:05 +0200)]
Don't build readline/libreadline.a, when --with-system-readline is supplied

https://sourceware.org/bugzilla/show_bug.cgi?id=18632

The bundled libreadline is always built, even if the system is
./configure'd --with-system-readline and the build libreadline.a is not
used.

Proposed patch:

Fix ./configure.ac not to proceed readline/, when --with-system-
readline is provided

* configure.ac: Don't configure readline if --with-system-readline is
used.
* configure: Re-generate.

2 years agoRISC-V: Add RVV vsetvl/vsetvlmax intrinsics and tests.
Ju-Zhe Zhong [Mon, 17 Oct 2022 08:36:42 +0000 (16:36 +0800)]
RISC-V: Add RVV vsetvl/vsetvlmax intrinsics and tests.

gcc/ChangeLog:

* config.gcc: Add riscv-vector-builtins-bases.o and riscv-vector-builtins-shapes.o
* config/riscv/riscv-vector-builtins.cc (DEF_RVV_I_OPS): New macro.
(DEF_RVV_FUNCTION): Ditto.
(handle_pragma_vector): Add intrinsic framework.
* config/riscv/riscv.cc (riscv_print_operand): Add operand print for vsetvl/vsetvlmax.
* config/riscv/riscv.md: include vector.md.
* config/riscv/t-riscv: Add riscv-vector-builtins-bases.o and riscv-vector-builtins-shapes.o
* config/riscv/riscv-vector-builtins-bases.cc: New file.
* config/riscv/riscv-vector-builtins-bases.h: New file.
* config/riscv/riscv-vector-builtins-functions.def: New file.
* config/riscv/riscv-vector-builtins-shapes.cc: New file.
* config/riscv/riscv-vector-builtins-shapes.h: New file.
* config/riscv/riscv-vector-builtins-types.def: New file.
* config/riscv/vector.md: New file.

gcc/testsuite/ChangeLog:

* gcc.target/riscv/rvv/base/vsetvl-1.c: New test.

2 years agoRISC-V: Add RVV intrinsic basic framework.
Ju-Zhe Zhong [Mon, 17 Oct 2022 08:20:43 +0000 (16:20 +0800)]
RISC-V: Add RVV intrinsic basic framework.

gcc/ChangeLog:

* config.gcc: Add gt files since function_instance is GTY ((user)).
* config/riscv/riscv-builtins.cc (riscv_init_builtins): Add RVV intrinsic framework.
(riscv_builtin_decl): Ditto.
(riscv_expand_builtin): Ditto.
* config/riscv/riscv-protos.h (builtin_decl): New function.
(expand_builtin): Ditto.
(enum riscv_builtin_class): New enum to classify RVV intrinsic and RISC-V general built-in.
* config/riscv/riscv-vector-builtins.cc (class GTY): New declaration.
(struct registered_function_hasher): New struct.
(DEF_RVV_OP_TYPE): New macro.
(DEF_RVV_TYPE): Ditto.
(DEF_RVV_PRED_TYPE): Ditto.
(GTY): New declaration.
(add_attribute): New function.
(check_required_extensions): Ditto.
(rvv_arg_type_info::get_tree_type): Ditto.
(function_instance::function_instance): Ditto.
(function_instance::operator==): Ditto.
(function_instance::any_type_float_p): Ditto.
(function_instance::get_return_type): Ditto.
(function_instance::get_arg_type): Ditto.
(function_instance::hash): Ditto.
(function_instance::call_properties): Ditto.
(function_instance::reads_global_state_p): Ditto.
(function_instance::modifies_global_state_p): Ditto.
(function_instance::could_trap_p): Ditto.
(function_builder::function_builder): Ditto.
(function_builder::~function_builder): Ditto.
(function_builder::allocate_argument_types): Ditto.
(function_builder::register_function_group): Ditto.
(function_builder::append_name): Ditto.
(function_builder::finish_name): Ditto.
(function_builder::get_attributes): Ditto.
(function_builder::add_function): Ditto.
(function_builder::add_unique_function): Ditto.
(function_call_info::function_call_info): Ditto.
(function_expander::function_expander): Ditto.
(function_expander::add_input_operand): Ditto.
(function_expander::generate_insn): Ditto.
(registered_function_hasher::hash): Ditto.
(registered_function_hasher::equal): Ditto.
(builtin_decl): Ditto.
(expand_builtin): Ditto.
(gt_ggc_mx): Define for using GCC garbage collect.
(gt_pch_nx): Define for using GCC garbage collect.
* config/riscv/riscv-vector-builtins.def (DEF_RVV_OP_TYPE): New macro.
(DEF_RVV_PRED_TYPE): Ditto.
(vbool64_t): Add suffix.
(vbool32_t): Ditto.
(vbool16_t): Ditto.
(vbool8_t): Ditto.
(vbool4_t): Ditto.
(vbool2_t): Ditto.
(vbool1_t): Ditto.
(vint8mf8_t): Ditto.
(vuint8mf8_t): Ditto.
(vint8mf4_t): Ditto.
(vuint8mf4_t): Ditto.
(vint8mf2_t): Ditto.
(vuint8mf2_t): Ditto.
(vint8m1_t): Ditto.
(vuint8m1_t): Ditto.
(vint8m2_t): Ditto.
(vuint8m2_t): Ditto.
(vint8m4_t): Ditto.
(vuint8m4_t): Ditto.
(vint8m8_t): Ditto.
(vuint8m8_t): Ditto.
(vint16mf4_t): Ditto.
(vuint16mf4_t): Ditto.
(vint16mf2_t): Ditto.
(vuint16mf2_t): Ditto.
(vint16m1_t): Ditto.
(vuint16m1_t): Ditto.
(vint16m2_t): Ditto.
(vuint16m2_t): Ditto.
(vint16m4_t): Ditto.
(vuint16m4_t): Ditto.
(vint16m8_t): Ditto.
(vuint16m8_t): Ditto.
(vint32mf2_t): Ditto.
(vuint32mf2_t): Ditto.
(vint32m1_t): Ditto.
(vuint32m1_t): Ditto.
(vint32m2_t): Ditto.
(vuint32m2_t): Ditto.
(vint32m4_t): Ditto.
(vuint32m4_t): Ditto.
(vint32m8_t): Ditto.
(vuint32m8_t): Ditto.
(vint64m1_t): Ditto.
(vuint64m1_t): Ditto.
(vint64m2_t): Ditto.
(vuint64m2_t): Ditto.
(vint64m4_t): Ditto.
(vuint64m4_t): Ditto.
(vint64m8_t): Ditto.
(vuint64m8_t): Ditto.
(vfloat32mf2_t): Ditto.
(vfloat32m1_t): Ditto.
(vfloat32m2_t): Ditto.
(vfloat32m4_t): Ditto.
(vfloat32m8_t): Ditto.
(vfloat64m1_t): Ditto.
(vfloat64m2_t): Ditto.
(vfloat64m4_t): Ditto.
(vfloat64m8_t): Ditto.
(vv): Ditto.
(vx): Ditto.
(v): Ditto.
(wv): Ditto.
(wx): Ditto.
(x_x_v): Ditto.
(vf2): Ditto.
(vf4): Ditto.
(vf8): Ditto.
(vvm): Ditto.
(vxm): Ditto.
(x_x_w): Ditto.
(v_v): Ditto.
(v_x): Ditto.
(vs): Ditto.
(mm): Ditto.
(m): Ditto.
(vf): Ditto.
(vm): Ditto.
(wf): Ditto.
(vfm): Ditto.
(v_f): Ditto.
(ta): Ditto.
(tu): Ditto.
(ma): Ditto.
(mu): Ditto.
(tama): Ditto.
(tamu): Ditto.
(tuma): Ditto.
(tumu): Ditto.
(tam): Ditto.
(tum): Ditto.
* config/riscv/riscv-vector-builtins.h (GCC_RISCV_VECTOR_BUILTINS_H): New macro.
(RVV_REQUIRE_RV64BIT): Ditto.
(RVV_REQUIRE_ZVE64): Ditto.
(RVV_REQUIRE_ELEN_FP_32): Ditto.
(RVV_REQUIRE_ELEN_FP_64): Ditto.
(enum operand_type_index): New enum.
(DEF_RVV_OP_TYPE): New macro.
(enum predication_type_index): New enum.
(DEF_RVV_PRED_TYPE): New macro.
(enum rvv_base_type): New enum.
(struct rvv_builtin_suffixes): New struct.
(struct rvv_arg_type_info): Ditto.
(struct rvv_type_info): Ditto.
(struct rvv_op_info): Ditto.
(class registered_function): New class.
(class function_base): Ditto.
(class function_shape): Ditto.
(struct function_group_info): New struct.
(class GTY): New class.
(class function_builder): Ditto.
(class function_call_info): Ditto.
(function_call_info::function_returns_void_p): New function.
(class function_expander): New class.
(function_instance::operator!=): New function.
(function_expander::expand): Ditto.
(function_expander::add_input_operand): Ditto.
(function_base::call_properties): Ditto.

2 years agoi386: Auto vectorize sdot_prod, udot_prod with VNNIINT8 instruction.
Haochen Jiang [Thu, 26 May 2022 07:46:40 +0000 (15:46 +0800)]
i386: Auto vectorize sdot_prod, udot_prod with VNNIINT8 instruction.

gcc/ChangeLog:

* config/i386/sse.md (ssedvecmode): Rename from VI1SI.
(ssedvecmodelower): Rename from vi1si.
(sdot_prod<mode>): New define_expand.
(udot_prod<mode>): Ditto.

gcc/testsuite/ChangeLog:

* gcc.target/i386/vnniint8-auto-vectorize-1.c: New test.
* gcc.target/i386/vnniint8-auto-vectorize-2.c: Ditto.

2 years agoSupport Intel AVX-VNNI-INT8
Kong Lingling [Wed, 29 Sep 2021 01:48:20 +0000 (09:48 +0800)]
Support Intel AVX-VNNI-INT8

gcc/ChangeLog

* common/config/i386/cpuinfo.h (get_available_features): Detect
avxvnniint8.
* common/config/i386/i386-common.cc
(OPTION_MASK_ISA2_AVXVNNIINT8_SET): New.
(OPTION_MASK_ISA2_AVXVNNIINT8_UNSET): Ditto.
(ix86_handle_option): Handle -mavxvnniint8.
* common/config/i386/i386-cpuinfo.h (enum processor_features):
Add FEATURE_AVXVNNIINT8.
* common/config/i386/i386-isas.h: Add ISA_NAME_TABLE_ENTRY for
avxvnniint8.
* config.gcc: Add avxvnniint8intrin.h.
* config/i386/avxvnniint8intrin.h: New file.
* config/i386/cpuid.h (bit_AVXVNNIINT8): New.
* config/i386/i386-builtin.def: Add new builtins.
* config/i386/i386-c.cc (ix86_target_macros_internal): Define
__AVXVNNIINT8__.
* config/i386/i386-options.cc (isa2_opts): Add -mavxvnniint8.
(ix86_valid_target_attribute_inner_p): Handle avxvnniint8.
* config/i386/i386-isa.def: Add DEF_PTA(AVXVNNIINT8) New..
* config/i386/i386.opt: Add option -mavxvnniint8.
* config/i386/immintrin.h: Include avxvnniint8intrin.h.
* config/i386/sse.md (UNSPEC_VPMADDUBSWACCD
UNSPEC_VPMADDUBSWACCSSD,UNSPEC_VPMADDWDACCD,
UNSPEC_VPMADDWDACCSSD): Rename according to new style.
(vpdp<vpdotprodtype>_<mode>): New define_insn.
* doc/extend.texi: Document avxvnniint8.
* doc/invoke.texi: Document -mavxvnniint8.
* doc/sourcebuild.texi: Document target avxvnniint8.

gcc/testsuite/ChangeLog

* g++.dg/other/i386-2.C: Add -mavxvnniint8.
* g++.dg/other/i386-3.C: Ditto.
* gcc.target/i386/avx-check.h: Add avxvnniint8 check.
* gcc.target/i386/sse-12.c: Add -mavxvnniint8.
* gcc.target/i386/sse-13.c: Ditto.
* gcc.target/i386/sse-14.c: Ditto.
* gcc.target/i386/sse-22.c: Ditto.
* gcc.target/i386/sse-23.c: Ditto.
* gcc.target/i386/funcspec-56.inc: Add new target attribute.
* lib/target-supports.exp
(check_effective_target_avxvnniint8): New.
* gcc.target/i386/avxvnniint8-1.c: Ditto.
* gcc.target/i386/avxvnniint8-vpdpbssd-2.c: Ditto.
* gcc.target/i386/avxvnniint8-vpdpbssds-2.c: Ditto.
* gcc.target/i386/avxvnniint8-vpdpbsud-2.c: Ditto.
* gcc.target/i386/avxvnniint8-vpdpbsuds-2.c: Ditto.
* gcc.target/i386/avxvnniint8-vpdpbuud-2.c: Ditto.
* gcc.target/i386/avxvnniint8-vpdpbuuds-2.c: Ditto.

Co-authored-by: Hongyu Wang <hongyu.wang@intel.com>
Co-authored-by: Haochen Jiang <haochen.jiang@intel.com>
2 years agoSupport Intel AVX-IFMA
Hongyu Wang [Tue, 28 Sep 2021 07:30:14 +0000 (15:30 +0800)]
Support Intel AVX-IFMA

gcc/

* common/config/i386/i386-common.cc
(OPTION_MASK_ISA_AVXIFMA_SET, OPTION_MASK_ISA2_AVXIFMA_UNSET,
OPTION_MASK_ISA2_AVX2_UNSET): New macro.
(ix86_handle_option): Handle -mavxifma.
* common/config/i386/i386-cpuinfo.h (processor_types): Add
FEATURE_AVXIFMA.
* common/config/i386/i386-isas.h: Add ISA_NAME_TABLE_ENTRY for
avxifma.
* common/config/i386/cpuinfo.h (get_available_features):
Detect avxifma.
* config.gcc: Add avxifmaintrin.h
* config/i386/avx512ifmavlintrin.h: (_mm_madd52lo_epu64): Change
to macro.
(_mm_madd52hi_epu64): Likewise.
(_mm256_madd52lo_epu64): Likewise.
(_mm256_madd52hi_epu64): Likewise.
* config/i386/avxifmaintrin.h: New header.
* config/i386/cpuid.h (bit_AVXIFMA): New.
* config/i386/i386-builtin.def: Add new builtins, and correct
  pattern names for AVX512IFMA.
* config/i386/i386-builtins.cc (def_builtin): Handle AVX-IFMA
  builtins like AVX-VNNI.
* config/i386/i386-c.cc (ix86_target_macros_internal): Define
__AVXIFMA__.
* config/i386/i386-expand.cc (ix86_check_builtin_isa_match):
  Relax ISA masks for AVXIFMA.
* config/i386/i386-isa.def: Add AVXIFMA.
* config/i386/i386-options.cc (isa2_opts): Add -mavxifma.
(ix86_valid_target_attribute_inner_p): Handle avxifma.
* config/i386/i386.md (isa): Add attr avxifma and avxifmavl.
* config/i386/i386.opt: Add option -mavxifma.
* config/i386/immintrin.h: Inculde avxifmaintrin.h.
* config/i386/sse.md (avx_vpmadd52<vpmadd52type>_<mode>):
Remove.
(vpamdd52<vpmadd52type><mode><sd_maskz_name>): Remove.
(vpamdd52huq<mode>_maskz): Rename to ...
(vpmadd52huq<mode>_maskz): ... this.
(vpamdd52luq<mode>_maskz): Rename to ...
(vpmadd52luq<mode>_maskz): ... this.
(vpmadd52<vpmadd52type><mode>): New define_insn.
(vpmadd52<vpmadd52type>v8di): Likewise.
(vpmadd52<vpmadd52type><mode>_maskz_1): Likewise.
(vpamdd52<vpmadd52type><mode>_mask): Rename to ...
(vpmadd52<vpmadd52type><mode>_mask): ... this.
* doc/invoke.texi: Document -mavxifma.
* doc/extend.texi: Document avxifma.
* doc/sourcebuild.texi: Document target avxifma.

gcc/testsuite/

* gcc.target/i386/avx-check.h: Add avxifma check.
* gcc.target/i386/avx512ifma-vpmaddhuq-1.c: Remane..
* gcc.target/i386/avx512ifma-vpmaddhuq-1a.c: To this.
* gcc.target/i386/avx512ifma-vpmaddluq-1.c: Ditto.
* gcc.target/i386/avx512ifma-vpmaddluq-1a.c: Ditto.
* gcc.target/i386/avx512ifma-vpmaddhuq-1b.c: New Test.
* gcc.target/i386/avx512ifma-vpmaddluq-1b.c: Ditto.
* gcc.target/i386/avx-ifma-1.c: Ditto.
* gcc.target/i386/avx-ifma-2.c: Ditto.
* gcc.target/i386/avx-ifma-3.c: Ditto.
* gcc.target/i386/avx-ifma-4.c: Ditto.
* gcc.target/i386/avx-ifma-5.c: Ditto.
* gcc.target/i386/avx-ifma-6.c: Ditto.
* gcc.target/i386/avx-ifma-vpmaddhuq-2.c: Ditto.
* gcc.target/i386/avx-ifma-vpmaddluq-2.c: Ditto.
* gcc.target/i386/sse-12.c: Add -mavxifma.
* gcc.target/i386/sse-13.c: Ditto.
* gcc.target/i386/sse-14.c: Ditto.
* gcc.target/i386/sse-22.c: Ditto.
* gcc.target/i386/sse-23.c: Ditto.
* g++.dg/other/i386-2.C: Ditto.
* g++.dg/other/i386-3.C: Ditto.
* gcc.target/i386/funcspec-56.inc: Add new target attribute.
* lib/target-supports.exp
(check_effective_target_avxifma): New.

2 years agoDaily bump.
GCC Administrator [Fri, 21 Oct 2022 00:17:52 +0000 (00:17 +0000)]
Daily bump.

2 years agoFortran: error recovery with references of bad array constructors [PR105633]
Harald Anlauf [Wed, 19 Oct 2022 20:37:56 +0000 (22:37 +0200)]
Fortran: error recovery with references of bad array constructors [PR105633]

gcc/fortran/ChangeLog:

PR fortran/105633
* expr.cc (find_array_section): Move check for NULL pointers so
that both subscript triplets and vector subscripts are covered.

gcc/testsuite/ChangeLog:

PR fortran/105633
* gfortran.dg/pr105633.f90: New test.

Co-authored-by: Steven G. Kargl <kargl@gcc.gnu.org>
2 years ago[PR c++/106654] Handle non-irange ranges in get_range_global for default defs.
Aldy Hernandez [Thu, 20 Oct 2022 16:26:42 +0000 (18:26 +0200)]
[PR c++/106654] Handle non-irange ranges in get_range_global for default defs.

With the upcoming [[assume]] work, Andrew has pointed out that
non-irange ranges are not handled in get_range_global for
SSA_NAME_IS_DEFAULT_DEF.  This patch fixes the oversight.

PR c++/106654

gcc/ChangeLog:

* value-query.cc (get_range_global): Handle non integer ranges for
default def SSA names.

2 years agoAdd op[12]_range for UNORDERED_LT entries in range-op.
Aldy Hernandez [Wed, 19 Oct 2022 15:06:41 +0000 (17:06 +0200)]
Add op[12]_range for UNORDERED_LT entries in range-op.

gcc/ChangeLog:

* range-op-float.cc (foperator_unordered_lt::op1_range): New.
(foperator_unordered_lt::op2_range): New.

2 years agotestsuite: Sanitize fails for SP FPU on Arm
Torbjörn SVENSSON [Fri, 23 Sep 2022 17:08:30 +0000 (19:08 +0200)]
testsuite: Sanitize fails for SP FPU on Arm

This patch stops reporting fails for Arm targets with single
precision floating point unit for types wider than 32 bits (the width
of float on arm-none-eabi).

As reported in PR102017, fenv is reported as supported in recent
versions of newlib. At the same time, for some Arm targets, the
implementation in libgcc does not support exceptions and thus, the
test fails with a call to abort().

gcc/testsuite/ChangeLog:

* lib/target-supports.exp
(check_effective_target_fenv_exceptions_double): New.
(check_effective_target_fenv_exceptions_long_double): New.
* gcc.dg/c2x-float-7.c: Split into 3 tests...
* gcc.dg/c2x-float-7a.c: Float part of c2x-float-7.c.
* gcc.dg/c2x-float-7b.c: Double part of c2x-float-7.c.
* gcc.dg/c2x-float-7c.c: Long double part of c2x-float-7.c.
* gcc.dg/pr95115.c: Switch to fenv_exceptions_double.
* gcc.dg/torture/float32x-nan-floath.c: Likewise.
* gcc.dg/torture/float32x-nan.c: Likewise.
* gcc.dg/torture/float64-nan-floath.c: Likewise.
* gcc.dg/torture/float64-nan.c: Likewise.
* gcc.dg/torture/inf-compare-1.c: Likewise.
* gcc.dg/torture/inf-compare-2.c: Likewise.
* gcc.dg/torture/inf-compare-3.c: Likewise.
* gcc.dg/torture/inf-compare-4.c: Likewise.
* gcc.dg/torture/inf-compare-5.c: Likewise.
* gcc.dg/torture/inf-compare-6.c: Likewise.
* gcc.dg/torture/inf-compare-7.c: Likewise.
* gcc.dg/torture/inf-compare-8.c: Likewise.
* gcc.dg/torture/pr52451.c: Likewise.
* gcc.dg/torture/pr82692.c: Likewise.
* gcc.dg/torture/inf-compare-1-float.c: New test.
* gcc.dg/torture/inf-compare-2-float.c: New test.
* gcc.dg/torture/inf-compare-3-float.c: New test.
* gcc.dg/torture/inf-compare-4-float.c: New test.
* gcc.dg/torture/inf-compare-5-float.c: New test.
* gcc.dg/torture/inf-compare-6-float.c: New test.
* gcc.dg/torture/inf-compare-7-float.c: New test.
* gcc.dg/torture/inf-compare-8-float.c: New test.

Co-Authored-By: Yvan ROUX <yvan.roux@foss.st.com>
Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
2 years agoc++: constraint matching, TEMPLATE_ID_EXPR, current inst
Patrick Palka [Thu, 20 Oct 2022 18:13:10 +0000 (14:13 -0400)]
c++: constraint matching, TEMPLATE_ID_EXPR, current inst

Here we're crashing during constraint matching for the instantiated
hidden friends due to two issues with dependent substitution into a
TEMPLATE_ID_EXPR that names a template from the current instantiation
(as for C<1> with T=T from maybe_substitute_reqs_for):

  * tsubst_copy substitutes into such a TEMPLATE_DECL by looking it up
    from the substituted class scope.  But for this lookup to work when
    the args are dependent, we need to substitute the class scope with
    entering_scope=true so that we obtain the primary template type
    A<T> (which has TYPE_BINFO) instead of the implicit instantiation
    A<T> (which doesn't).
  * lookup_and_finish_template_variable shouldn't instantiate a
    TEMPLATE_ID_EXPR that names a TEMPLATE_DECL which has more than
    one level of (unsubstituted) parameters (such as A<T>::C).

gcc/cp/ChangeLog:

* pt.cc (lookup_and_finish_template_variable): Don't
instantiate if the template's scope is dependent.
(tsubst_copy) <case TEMPLATE_DECL>: Pass entering_scope=true
when substituting the class scope.

gcc/testsuite/ChangeLog:

* g++.dg/cpp2a/concepts-friend10.C: New test.

2 years agoipa-visibility: Optimize TLS access [PR99619]
Artem Klimov [Wed, 6 Jul 2022 14:02:01 +0000 (17:02 +0300)]
ipa-visibility: Optimize TLS access [PR99619]

Fix PR99619, which asks to optimize TLS model based on visibility.
The fix is implemented as an IPA optimization: this allows to take
optimized visibility status into account (as well as avoid modifying
all language frontends).

2022-04-17  Artem Klimov  <jakmobius@gmail.com>

gcc/ChangeLog:

PR middle-end/99619
* ipa-visibility.cc (function_and_variable_visibility): Promote
TLS access model afer visibility optimizations.
* varasm.cc (have_optimized_refs): New helper.
(optimize_dyn_tls_for_decl_p): New helper. Use it ...
(decl_default_tls_model): ... here in place of 'optimize' check.

gcc/testsuite/ChangeLog:

PR middle-end/99619
* gcc.dg/tls/vis-attr-gd.c: New test.
* gcc.dg/tls/vis-attr-hidden-gd.c: New test.
* gcc.dg/tls/vis-attr-hidden.c: New test.
* gcc.dg/tls/vis-flag-hidden-gd.c: New test.
* gcc.dg/tls/vis-flag-hidden.c: New test.
* gcc.dg/tls/vis-pragma-hidden-gd.c: New test.
* gcc.dg/tls/vis-pragma-hidden.c: New test.

Co-Authored-By: Alexander Monakov <amonakov@gcc.gnu.org>
Signed-off-by: Artem Klimov <jakmobius@gmail.com>
2 years agoA false UNORDERED_<cond> means neither operand can be a NAN.
Aldy Hernandez [Wed, 19 Oct 2022 15:14:02 +0000 (17:14 +0200)]
A false UNORDERED_<cond> means neither operand can be a NAN.

The false side of UNORDERED_<cond> means neither operand can be a NAN.
Adjust all the op[12]_range entries for the UNORDERED operators such
that a known NAN on one operands means the other operands is
undefined.

gcc/ChangeLog:

* range-op-float.cc (foperator_unordered_le::op1_range): Adjust
false side with a NAN operand.
(foperator_unordered_le::op2_range): Same.
(foperator_unordered_gt::op1_range): Same.
(foperator_unordered_gt::op2_range): Same.
(foperator_unordered_ge::op1_range): Same.
(foperator_unordered_ge::op2_range): Same.
(foperator_unordered_equal::op1_range): Same.

2 years agoc++ modules: handle CONCEPT_DECL in node_template_info [PR102963]
Patrick Palka [Thu, 20 Oct 2022 15:33:39 +0000 (11:33 -0400)]
c++ modules: handle CONCEPT_DECL in node_template_info [PR102963]

Here node_template_info is overlooking that CONCEPT_DECL has TEMPLATE_INFO
too, which causes get_originating_module_decl for the CONCEPT_DECL to not
return the corresponding TEMPLATE_DECL, which leads to an ICE from
import_entity_index while pretty printing the CONCEPT_DECL's module
suffix as part of the static assert failure elaboration.

PR c++/102963

gcc/cp/ChangeLog:

* module.cc (node_template_info): Handle CONCEPT_DECL.

gcc/testsuite/ChangeLog:

* g++.dg/modules/concept-7_a.C: New test.
* g++.dg/modules/concept-7_b.C: New test.

2 years agovect: Fix vectype when widening container type in bitfield pattern [PR107326]
Andre Vieira [Thu, 20 Oct 2022 14:54:39 +0000 (15:54 +0100)]
vect: Fix vectype when widening container type in bitfield pattern [PR107326]

The 'vect_recog_bitfield_ref_pattern' was not correctly adapting the vectype
when widening the container.

gcc/ChangeLog:

PR tree-optimization/107326
* tree-vect-patterns.cc (vect_recog_bitfield_ref_pattern): Change
vectype when widening container.

gcc/testsuite/ChangeLog:

* gcc.dg/vect/pr107326.c: New test.
* gcc.dg/vect/vect-bitfield-read-7.c: New test.

2 years agolibstdc++: Redefine __from_chars_alnum_to_val's table
Patrick Palka [Thu, 20 Oct 2022 14:30:31 +0000 (10:30 -0400)]
libstdc++: Redefine __from_chars_alnum_to_val's table

After the C++23 constexpr <charconv> patch r13-3313-g378a0f1840e694 we
have some modules testsuite regressions:

  FAIL: g++.dg/modules/xtreme-header-4_b.C -std=c++2b (test for excess errors)
  FAIL: g++.dg/modules/xtreme-header_b.C -std=c++2b (test for excess errors)

Like with PR105297, the cause seems to be the deduced type of __table
resolving ahead of time to a local class type, which trips up modules.
And unfortunately that PR's minimal workaround of making __tables's
initializer value dependent doesn't help in this case.

So this patch works around this by avoiding using a local class for the
table type.  And I suppose we should use a static data member to define
the table once for all dialects (including C++14) instead of having to
define it twice in C++23 mode (once as a static local variable and again
as a variable template for sake of constexpr evaluation).

libstdc++-v3/ChangeLog:

* include/std/charconv (__detail::__from_chars_alnum_to_val_table):
Redefine as a class template containing the members type, value and
_S_make_table.  Don't use a local class as the table type.
(__detail::__table): Remove.
(__detail::__from_chars_alnum_to_val): Adjust after the above.

2 years agoDo not set NAN flags for VARYING ranges when !HONOR_NANS.
Aldy Hernandez [Thu, 20 Oct 2022 06:55:36 +0000 (08:55 +0200)]
Do not set NAN flags for VARYING ranges when !HONOR_NANS.

Since NANs can't appear in ranges for !HONOR_NANS, there's no reason
to set them in a VARYING range.

gcc/ChangeLog:

* value-range.h (frange::set_varying): Do not set NAN flags for
!HONOR_NANS.
* value-range.cc (frange::normalize_kind): Adjust for no NAN when
!HONOR_NANS.
(frange::verify_range): Same.
* range-op-float.cc (maybe_isnan): Remove flag_finite_math_only check.

2 years agoReplace finite_operands_p with maybe_isnan.
Aldy Hernandez [Wed, 19 Oct 2022 17:28:09 +0000 (19:28 +0200)]
Replace finite_operands_p with maybe_isnan.

The finite_operands_p function was incorrectly named, as it only
returned TRUE when !NAN.  This was leftover from the initial
implementation of frange.  Using the maybe_isnan() nomenclature is
more consistent and easier to understand.

gcc/ChangeLog:

* range-op-float.cc (finite_operand_p): Remove.
(finite_operands_p): Rename to...
(maybe_isnan): ...this.
(frelop_early_resolve): Use maybe_isnan instead of finite_operands_p.
(foperator_equal::fold_range): Same.
(foperator_equal::op1_range): Same.
(foperator_not_equal::fold_range): Same.
(foperator_lt::fold_range): Same.
(foperator_le::fold_range): Same.
(foperator_gt::fold_range): Same.
(foperator_ge::fold_range): Same.

2 years agotestsuite: Add some missing -Wno-psabi options
Jakub Jelinek [Thu, 20 Oct 2022 11:58:13 +0000 (13:58 +0200)]
testsuite: Add some missing -Wno-psabi options

The following testcases FAIL on i686-linux due to excess diagnostics
for -Wpsabi.

2022-10-20  Jakub Jelinek  <jakub@redhat.com>

* gcc.target/i386/pr107271.c: Add -Wno-psabi to dg-options.
* gcc.dg/debug/btf/btf-function-3.c: Likewise.

2 years agopasses: Fix a comment typo
Jakub Jelinek [Thu, 20 Oct 2022 11:55:35 +0000 (13:55 +0200)]
passes: Fix a comment typo

This patch fixes a single typo in comment.

2022-10-20  Jakub Jelinek  <jakub@redhat.com>

* passes.cc (pass_manager::register_pass): Fix a comment
typo - copmilation -> compilation.

2 years agolibgomp: Add offload_device_gcn check, add requires-4a.c test
Tobias Burnus [Thu, 20 Oct 2022 10:58:52 +0000 (12:58 +0200)]
libgomp: Add offload_device_gcn check, add requires-4a.c test

Duplicate libgomp.c-c++-common/requires-4.c (as ...-4a.c) but
with using a heap-allocated instead of static memory for a variable.

This change and the added offload_device_gcn check prepare for
pseudo-USM, where the device hardware cannot access all host
memory but only managed and pinned memory; for those, requires-4.c
will fail and the new check permits to add
  target { ! { offload_device_nvptx || offload_device_gcn } }
to requires-4.c; however, it has not been added yet as pseuo-USM
support is not yet on mainline. (Review is pending for the USM
patches.)

include/ChangeLog:

* gomp-constants.h (GOMP_DEVICE_HSA): Comment out unused define.

libgomp/ChangeLog:

* testsuite/lib/libgomp.exp (check_effective_target_offload_device_gcn):
New.
* testsuite/libgomp.c-c++-common/on_device_arch.h (device_arch_gcn,
on_device_arch_gcn): New.
* testsuite/libgomp.c-c++-common/requires-4a.c: New test; copied from
requires-4.c but using heap-allocated memory.

2 years agoAvoid PHI - PHI recurrence in vectorization
Richard Biener [Thu, 20 Oct 2022 09:04:21 +0000 (11:04 +0200)]
Avoid PHI - PHI recurrence in vectorization

The reported regression of libgomp loop-14.C shows that there isn't
generally a good reliable place to insert the permute upfront so
the following simply restricts recurrence vectorization to the cases
where the latch value isn't defined by a PHI.

* tree-vect-loop.cc (vect_phi_first_order_recurrence_p):
Disallow latch PHI defs.
(vectorizable_recurr): Revert previous change.

2 years agoAdd 'libgomp.oacc-c-c++-common/private-big-1.c' [PR105421]
Thomas Schwinge [Mon, 17 Oct 2022 22:13:47 +0000 (00:13 +0200)]
Add 'libgomp.oacc-c-c++-common/private-big-1.c' [PR105421]

After commit r13-3404-g7c55755d4c760de326809636531478fd7419e1e5
"amdgcn: Use FLAT addressing for all functions with pointer arguments [PR105421]",
"big" private data now works for GCN offloading, too.

PR target/105421
libgomp/
* testsuite/libgomp.oacc-c-c++-common/private-big-1.c: New.

2 years agoamdgcn: Use FLAT addressing for all functions with pointer arguments [PR105421]
Julian Brown [Fri, 14 Oct 2022 11:06:07 +0000 (11:06 +0000)]
amdgcn: Use FLAT addressing for all functions with pointer arguments [PR105421]

The GCN backend uses a heuristic to determine whether to use FLAT or
GLOBAL addressing in a particular (offload) function: namely, if a
function takes a pointer-to-scalar parameter, it is assumed that the
pointer may refer to "flat scratch" space, and thus FLAT addressing must
be used instead of GLOBAL.

I came up with this heuristic initially whilst working on support for
moving OpenACC gang-private variables into local-data share (scratch)
memory. The assumption that only scalar variables would be transformed in
that way turned out to be wrong.  For example, prior to the next patch in
the series, Fortran compiler-generated temporary structures were treated
as gang private and moved to LDS space, typically overflowing the region
allocated for such variables.  That will no longer happen after that
patch is applied, but there may be other cases of structs moving to LDS
space now or in the future that this patch may be needed for.

2022-10-14  Julian Brown  <julian@codesourcery.com>

PR target/105421
gcc/
* config/gcn/gcn.cc (gcn_detect_incoming_pointer_arg): Any pointer
argument forces FLAT addressing mode, not just
pointer-to-non-aggregate.

2 years agoMake 'autoreconf' work for 'gcc', 'libobjc'
Thomas Schwinge [Tue, 20 Sep 2022 12:27:05 +0000 (14:27 +0200)]
Make 'autoreconf' work for 'gcc', 'libobjc'

With that, we may then run plain 'autoreconf' for all of GCC's subpackages,
instead of for some of those (that don't use Automake) manually having to run
the applicable combination of 'aclocal', 'autoconf', 'autoheader'.

See also 'AC_CONFIG_MACRO_DIRS'/'AC_CONFIG_MACRO_DIR' usage elsewhere.

gcc/
* configure.ac (AC_CONFIG_MACRO_DIRS): Instantiate.
* configure: Regenerate.
libobjc/
* configure.ac (AC_CONFIG_MACRO_DIRS): Instantiate.
* configure: Regenerate.

2 years agoaarch64: Commonise some folding code
Richard Sandiford [Thu, 20 Oct 2022 09:37:35 +0000 (10:37 +0100)]
aarch64: Commonise some folding code

Add an aarch64_sve::gimple_folder helper for folding calls
to integer constants.  SME will make more use of this.

gcc/
* config/aarch64/aarch64-sve-builtins.h
(gimple_folder::fold_to_cstu): New member function.
* config/aarch64/aarch64-sve-builtins.cc
(gimple_folder::fold_to_cstu): Define.
* config/aarch64/aarch64-sve-builtins-base.cc
(svcnt_bhwd_impl::fold): Use it.

2 years agoaarch64: Use using directives to inherit constructors
Richard Sandiford [Thu, 20 Oct 2022 09:37:34 +0000 (10:37 +0100)]
aarch64: Use using directives to inherit constructors

Now that the codebase is C++11, we can use using directives
to inherit constructors from base classes.

gcc/
* config/aarch64/aarch64-sve-builtins-functions.h (quiet)
(rtx_code_function, rtx_code_function_rotated, unspec_based_function)
(unspec_based_function_rotated, unspec_based_function_exact_insn)
(unspec_based_fused_function, unspec_based_fused_lane_function):
Replace constructors with using directives.
* config/aarch64/aarch64-sve-builtins-base.cc (svcnt_bhwd_pat_impl)
(svcreate_impl, svdotprod_lane_impl, svget_impl, svld1_extend_impl)
(svld1_gather_extend_impl, svld234_impl, svldff1_gather_extend)
(svset_impl, svst1_scatter_truncate_impl, svst1_truncate_impl)
(svst234_impl, svundef_impl): Likewise.
* config/aarch64/aarch64-sve-builtins-sve2.cc
(svldnt1_gather_extend_impl, svmovl_lb_impl): Likewise.
(svstnt1_scatter_truncate_impl): Likewise.

2 years agoaarch64: Replace CONSTEXPR with constexpr
Richard Sandiford [Thu, 20 Oct 2022 09:37:34 +0000 (10:37 +0100)]
aarch64: Replace CONSTEXPR with constexpr

Move away from the pre-C++11 compatibility macro CONSTEXPR.

gcc/
* config/aarch64/aarch64-sve-builtins-base.cc: Replace CONSTEXPR
with constexpr throughout.
* config/aarch64/aarch64-sve-builtins-functions.h: Likewise.
* config/aarch64/aarch64-sve-builtins-shapes.cc: Likewise.
* config/aarch64/aarch64-sve-builtins-sve2.cc: Likewise.
* config/aarch64/aarch64-sve-builtins.cc: Likewise.

2 years agoaarch64: Prevent generation of /M BRKAS and BRKBS
Richard Sandiford [Thu, 20 Oct 2022 09:37:33 +0000 (10:37 +0100)]
aarch64: Prevent generation of /M BRKAS and BRKBS

Bit of a brown-paper-bag bug, but: GCC was generating
non-existent merging forms of BRKAS and BRKBS.  Those
instructions only support zero predication (although
BRKA and BRKB support both).

gcc/
* config/aarch64/aarch64-sve.md (*aarch64_brk<brk_op>_cc): Remove
merging alternative.
(*aarch64_brk<brk_op>_ptest): Likewise.

gcc/testsuite/
* gcc.target/aarch64/sve/acle/general/brka_1.c: Expect a separate
PTEST instruction.
* gcc.target/aarch64/sve/acle/general/brkb_1.c: Likewise.

2 years agoaarch64: Fix matching of BRKNS
Richard Sandiford [Thu, 20 Oct 2022 09:37:33 +0000 (10:37 +0100)]
aarch64: Fix matching of BRKNS

Unlike other flag-setting SVE instructions, BRKNS sets the flags
based on an all-true governing predicate, rather than the GP operand.

gcc/
* config/aarch64/iterators.md (SVE_BRKP): New iterator.
* config/aarch64/aarch64-sve.md (*aarch64_brkn_cc): New pattern.
(*aarch64_brkn_ptest): Likewise.
(*aarch64_brk<brk_op>_cc): Restrict to SVE_BRKP.
(*aarch64_brk<brk_op>_ptest): Likewise.

gcc/testsuite/
* gcc.target/aarch64/sve/acle/general/brkn_1.c: Expect separate
PTEST instructions.
* gcc.target/aarch64/sve/acle/general/brkn_2.c: New test.

2 years agoc/107305 - avoid ICEing with invalid GIMPLE input to the GIMPLE FE
Richard Biener [Wed, 19 Oct 2022 12:12:11 +0000 (14:12 +0200)]
c/107305 - avoid ICEing with invalid GIMPLE input to the GIMPLE FE

The GIMPLE FE was designed to defer semantic error checking to the
GIMPLE IL verifier.  But that can end up causing spurious ICEs
earlier and in fact it will report an internal error.  The following
tries to improve the situation by explicitely calling into the
verifier from the parser and intructing it to not ICE but instead
zap the parsed body after an error is discovered.

PR c/107305
PR c/107306
gcc/c/
* gimple-parser.cc (c_parser_parse_gimple_body): Verify
the parsed IL and zap the body on error.

gcc/
* tree-cfg.h (verify_gimple_in_seq): Add parameter to
indicate whether to emit an ICE.  Add return value.
(verify_gimple_in_cfg): Likewise.
* tree-cfg.cc (verify_gimple_in_seq): Likewise.
(verify_gimple_in_cfg): Likewise.

gcc/testsuite/
* gcc.dg/gimplefe-error-15.c: New testcase.

2 years agovect: Simplify first for shifted value generation [PR107240]
Kewen Lin [Thu, 20 Oct 2022 09:07:05 +0000 (04:07 -0500)]
vect: Simplify first for shifted value generation [PR107240]

As PR107240 shows, when both the value to be shifted and the
count used for shifting are constants, it can be simplified
to one constant value, and doesn't actually require to check
if the current target supports vector shift operations or not.

This patch uses a canonical way proposed by Richi to generate
the shifted value, if it can be simplified, the shift operation
would be gone, otherwise it's the same as before.

It can help to fix the failures of vect-bitfield-write-{2,3}.c
on Power.

PR tree-optimization/107240

2022-10-20  Richard Biener  <rguenther@suse.de>

gcc/ChangeLog:

* tree-vect-patterns.cc (vect_recog_bit_insert_pattern): Attempt to
simplify shifted value first.

2 years agoAdd C++ library interface data
Ulrich Drepper [Thu, 20 Oct 2022 08:50:23 +0000 (10:50 +0200)]
Add C++ library interface data

This patch adds a CSV file with information about the API of the
standard C++ library.  This information can be used in multiple ways.
So far there are two use cases:

- to generate the module export list for the standard C++ library
- to create the name hints to compiler emits when symbols in the
  std namespace are not found

Adding more uses can be easily done by potentially adding more columns
to the CSV file and adding to the Python script which generates the
output file.

contrib/
2022-10-18  Jonathan Wakely   <jwakely@redhat.com>
    Ulrich Drepper  <drepper@redhat.com>

* gcc_update: Add rule for gcc/cp/std-name-hint.gperf.

gcc/cp/
2022-10-18  Jonathan Wakely   <jwakely@redhat.com>
    Ulrich Drepper  <drepper@redhat.com>

* Make-lang.in: Add rules to generate std-name-hint.gperf.  Adjust
rule to generate std-name-hint.h to allow chain rule.
* std-name-hint.h: Regenerated.
* std-name-hint.gperf: This file is now generated.
* cxxapi-data.csv: New file.  CSV file with C++ API data.
* gen-cxxapi-file.py: New file.  Generate std-name-hint.gperf
and module export source (in future).

2 years agoAdd assume support to VRP.
Andrew MacLeod [Tue, 18 Oct 2022 20:29:49 +0000 (16:29 -0400)]
Add assume support to VRP.

This provides an assume_query class using rangers GORI module to
determine what ranges would be applied to any SSA NAMES in the function
if the return value were [1, 1].  Any parameter ranges are stored in
the SSA_NAME_RANGE_INFO field, and ranger's inferred range machinery is
then used to look these up and match them to assume call parameteres
in the bodies of other functions..

        PR c++/106654
gcc/
* gimple-range-gori.h (compute_operand_range): Make public.
* gimple-range-infer.cc (gimple_infer_range::check_assume_func): New.
(gimple_infer_range::gimple_infer_range): Check for assume calls.
* gimple-range-infer.h (check_assume_func): Add prototype.
* gimple-range.cc (assume_query::assume_range_p): New.
(assume_query::range_of_expr): New.
(assume_query::assume_query): New.
(assume_query::calculate_op): New.
(assume_query::calculate_phi): New.
(assume_query::check_taken_edge): New.
(assume_query::calculate_stmt): New.
(assume_query::dump): New.
* gimple-range.h (class assume_query): New.
* tree-vrp.cc (pass_assumptions::execute): Add processing.

gcc/testsuite/
* g++.dg/cpp23/attr-assume-opt.C: New.

2 years agoDaily bump.
GCC Administrator [Thu, 20 Oct 2022 00:17:52 +0000 (00:17 +0000)]
Daily bump.

2 years agoc: C2x %wN, %wfN format checking
Joseph Myers [Wed, 19 Oct 2022 21:55:27 +0000 (21:55 +0000)]
c: C2x %wN, %wfN format checking

C2x adds printf and scanf wN and wfN length modifiers (wN for
int_leastN_t / uint_leastN_t, also usable for intN_t and uintN_t which
are now required to be the same type as the "least" versions when both
are supported; wfN for int_fastN_t / uint_fastN_t).  Add corresponding
format checking support for those length modifiers, for all the
standard integer conversion speciciers plus the recommended integer
specifier %B.

Note that, as with the %b support, this only deals with format
checking, not other format handling elsewhere in the compiler (in
particular, it doesn't add any -Wformat-overflow support; cf. Frolov
Daniil's patch
<https://gcc.gnu.org/pipermail/gcc-patches/2022-September/600790.html>
adding such support for %b and %B, which I think is still pending
review).  And of course library support is a separate matter for each
library implementation (I hope to add corresponding glibc support in
due course).

None of the tables of format conversions for kinds of formats not
supporting the new length modifiers are updated; they don't need
updating because the entries not matching some length modifier listed
for that kind of format can never be accessed, and the tables
generally thus already only explicitly covered a sufficient initial
subsequence of the length modifiers, rather than listing a full 13
possibilities before this patch or 21 after it.  %w (as used for
HOST_WIDE_INT in GCC-internal formats) comes after the new modifiers
in the FMT_LEN_* enumeration, but that's not a problem because the
tables don't actually use FMT_LEN_w entries; rather, such entries get
rewritten at runtime once GCC knows the value of HOST_WIDE_INT in the
GCC it's compiling.

Bootstrapped with no regressions for x86_64-pc-linux-gnu.

gcc/c-family/
* c-format.h (enum format_lengths): Add FMT_LEN_w8, FMT_LEN_w16,
FMT_LEN_w32, FMT_LEN_w64, FMT_LEN_wf8, FMT_LEN_wf16, FMT_LEN_wf32
and FMT_LEN_wf64.
(NOARGUMENTS, NOLENGTHS): Update definitions.
(T_I8, T2X_I8, T_I16, T2X_I16, T_I32, T2X_I32, T_I64, T2X_I64)
(T_U8, T2X_U8, T_U16, T2X_U16, T_U32, T2X_U32, T_U64, T2X_U64)
(T_IF8, T2X_IF8, T_IF16, T2X_IF16, T_IF32, T2X_IF32, T_IF64)
(T2X_IF64, T_UF8, T2X_UF8, T_UF16, T2X_UF16, T_UF32, T2X_UF32)
(T_UF64, T2X_UF64): New macros.
* c-format.cc (printf_length_specs, scanf_length_specs): Add wN
and wfN length modifiers.
(print_char_table, scan_char_table): Add entries using wN and wfN
length modifiers.

gcc/testsuite/
* gcc.dg/format/format.h (int_least8_t, int_least16_t)
(int_least32_t, int_least64_t, uint_least8_t, uint_least16_t)
(uint_least32_t, uint_least64_t, int_fast8_t, int_fast16_t)
(int_fast32_t, int_fast64_t, uint_fast8_t, uint_fast16_t)
(uint_fast32_t, uint_fast64_t): New typedefs.
* gcc.dg/format/c11-printf-1.c, gcc.dg/format/c11-scanf-1.c,
gcc.dg/format/c2x-printf-1.c, gcc.dg/format/c2x-scanf-1.c,
gcc.dg/format/ext-9.c: Add tests using wN and wfN length
modifiers.

2 years agoAlways check result from build_<COND> in range-op-float.cc
Aldy Hernandez [Wed, 19 Oct 2022 15:05:39 +0000 (17:05 +0200)]
Always check result from build_<COND> in range-op-float.cc

A result of false from build_<COND> in range-ops means the result is
final and needs no further adjustments.  This patch documents this,
and changes all uses to check the result.  There should be no change
in functionality.

gcc/ChangeLog:

* range-op-float.cc (build_le): Document result.
(build_lt): Same.
(build_ge): Same.
(foperator_ge::op2_range): Check result of build_*.
(foperator_unordered_le::op1_range): Same.
(foperator_unordered_le::op2_range): Same.
(foperator_unordered_gt::op1_range): Same.
(foperator_unordered_gt::op2_range): Same.
(foperator_unordered_ge::op1_range): Same.
(foperator_unordered_ge::op2_range): Same.

2 years agoanalyzer: fix ICE on __builtin_ms_va_copy [PR105765]
David Malcolm [Wed, 19 Oct 2022 20:49:38 +0000 (16:49 -0400)]
analyzer: fix ICE on __builtin_ms_va_copy [PR105765]

gcc/analyzer/ChangeLog:
PR analyzer/105765
* varargs.cc (get_BT_VALIST_ARG): Rename to...
(get_va_copy_arg): ...this, and update logic for determining level
of indirection of va_copy's argument to use type of argument,
rather than looking at va_list_type_node, to correctly handle
__builtin_ms_va_copy.
(get_stateful_BT_VALIST_ARG): Rename to...
(get_stateful_va_copy_arg): ...this.
(va_list_state_machine::on_va_copy): Update for renaming.
(region_model::impl_call_va_copy): Likewise.

gcc/testsuite/ChangeLog:
PR analyzer/105765
* gcc.dg/analyzer/stdarg-1-ms_abi.c: New test, based on stdarg-1.c.
* gcc.dg/analyzer/stdarg-1-sysv_abi.c: Likewise.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2 years agolibstdc++: Implement remaining P2474R2 changes to views::take/drop
Patrick Palka [Wed, 19 Oct 2022 19:43:13 +0000 (15:43 -0400)]
libstdc++: Implement remaining P2474R2 changes to views::take/drop

libstdc++-v3/ChangeLog:

* include/std/ranges (views::__detail::__is_repeat_view): Define
and later define a partial specialization.
(views::__detail::__take_of_repeat_view): Declare and later define.
(views::__detail::__drop_of_repeat_view): Likewise.
(views::_Take::operator()): Return a repeat_view if the argument
is a repeat_view as per P2474R2.
(views::_Drop::operator()): Likewise.
(repeat_view): Befriend __take/drop_of_repeat_view.
* testsuite/std/ranges/repeat/1.cc (test04): New test.