Lewis Hyatt [Tue, 5 Dec 2023 16:33:39 +0000 (11:33 -0500)]
c-family: Fix ICE with large column number after restoring a PCH [PR105608]
Users are allowed to define macros prior to restoring a precompiled header
file, as long as those macros are not defined (or are defined identically)
in the PCH. However, the PCH restoration process destroys all the macro
definitions, so libcpp has to record them before restoring the PCH and then
redefine them afterward.
This process does not currently assign great locations to the macros after
redefining them. Some work is needed to also remember the original locations
and get the line_maps instance in the right state (since, like all other
data structures, the line_maps instance is also reset after restoring a PCH).
The new testcase line-map-3.C contains XFAILed examples where the locations
are wrong.
This patch addresses a more pressing issue, which is that we ICE in some
cases since GCC 11, hitting an assert in line-maps.cc. It happens if the
first line encountered after the PCH restore requires an LC_RENAME map, such
as will happen if the line is sufficiently long. This is much easier to
fix, since we just need to call linemap_line_start before asking libcpp to
redefine the stored macros, instead of afterward, to avoid the unexpected
need for an LC_RENAME before an LC_ENTER has been seen.
gcc/c-family/ChangeLog:
PR preprocessor/105608
* c-pch.cc (c_common_read_pch): Start a new line map before asking
libcpp to restore macros defined prior to reading the PCH, instead
of afterward.
gcc/testsuite/ChangeLog:
PR preprocessor/105608
* g++.dg/pch/line-map-1.C: New test.
* g++.dg/pch/line-map-1.Hs: New test.
* g++.dg/pch/line-map-2.C: New test.
* g++.dg/pch/line-map-2.Hs: New test.
* g++.dg/pch/line-map-3.C: New test.
* g++.dg/pch/line-map-3.Hs: New test.
c/c++: Tweak warning for 'always_inline function might not be inlinable'
When you're not regularly exposed to this warning, it is
easy to be misled by its wording, believing that there's
something else in the function that stops it from being
inlined, something other than the lack of also being
*declared* inline. Also, clang does not warn.
It's just a warning: without the inline directive, there has
to be a secondary reason for the function to be inlined,
other than the always_inline attribute, a reason that may be
in effect despite the warning.
Whenever the text is quoted in inline-related bugzilla
entries, there seems to often have been an initial step of
confusion that has to be cleared, for example in PR55830.
A file in the powerpc-specific parts of the test-suite,
gcc.target/powerpc/vec-extract-v16qiu-v2.h, has a comment
and seems to be another example, and I testify as the
first-hand third "experience". The wording has been the
same since the warning was added.
Let's just tweak the wording, adding the cause, so that the
reason for the warning is clearer. This hopefully stops the
user from immediately asking "'Might'? Because why?" and
then going off looking at the function body - or grepping
the gcc source or documentation, or enter a bug-report
subsequently closed as resolved/invalid.
Since the message is only appended with additional
information, no test-case actually required adjustment.
I still changed them, so the message is covered.
gcc:
* cgraphunit.cc (process_function_and_variable_attributes): Tweak
the warning for an attribute-always_inline without inline declaration.
Nathaniel Shead [Fri, 26 Jan 2024 05:55:52 +0000 (16:55 +1100)]
c++: Stream additional fields for DECL_STRUCT_FUNCTION [PR113580]
Currently the DECL_STRUCT_FUNCTION for a declaration is always
reconstructed from scratch. This causes issues though, as some fields
used by other parts of the compiler (in this case, specifically
'function_{start,end}_locus') are then not correctly initialised. This
patch makes sure that these fields are also read and written.
PR c++/113580
gcc/cp/ChangeLog:
* module.cc (struct post_process_data): Create.
(trees_in::post_decls): Use.
(trees_in::post_process): Return entire vector at once.
Change overload to take post_process_data instead of tree.
(trees_out::write_function_def): Write needed flags from
DECL_STRUCT_FUNCTION.
(trees_in::read_function_def): Read them and pass to
post_process.
(module_state::read_cluster): Write flags into cfun.
gcc/testsuite/ChangeLog:
* g++.dg/modules/pr113580_a.C: New test.
* g++.dg/modules/pr113580_b.C: New test.
Add RTL tests, for RV64 and RV32 where appropriate, corresponding to the
existing cset-sext.c tests. They have been produced from RTL code as at
the entry of the "ce1" pass for the respective cset-sext.c tests built
at -O3.
gcc/testsuite/
* gcc.target/riscv/cset-sext-rtl.c: New file.
* gcc.target/riscv/cset-sext-rtl32.c: New file.
* gcc.target/riscv/cset-sext-sfb-rtl.c: New file.
* gcc.target/riscv/cset-sext-sfb-rtl32.c: New file.
* gcc.target/riscv/cset-sext-thead-rtl.c: New file.
* gcc.target/riscv/cset-sext-ventana-rtl.c: New file.
* gcc.target/riscv/cset-sext-zicond-rtl.c: New file.
* gcc.target/riscv/cset-sext-zicond-rtl32.c: New file.
Add a pair of RTL tests, for RV64 and RV32 respectively, corresponding
to the existing pr105314.c test. They have been produced from RTL code
as at the entry of the "ce1" pass for pr105314.c compiled at -O3.
gcc/testsuite/
* gcc.target/riscv/pr105314-rtl.c: New file.
* gcc.target/riscv/pr105314-rtl32.c: New file.
RISC-V/testsuite: Also verify if-conversion runs for pr105314.c
Verify that if-conversion succeeded through noce_try_store_flag_mask, as
per PR rtl-optimization/105314, tightening the test case and making it
explicit.
gcc/testsuite/
* gcc.target/riscv/pr105314.c: Scan the RTL "ce1" pass too.
The optimization levels pr105314.c is iterated over are needlessly
overridden with "-O2", limiting the coverage of the test case to that
level, perhaps with additional options the original optimization level
has been supplied with. We could prevent the extra iterations other
than "-O2" from being run, but the transformation made by if-conversion
is also expected to happen at other optimization levels, so include them
all, and also make sure no reverse-condition branch appears in output,
moving the `dg-final' command to the bottom, as with most test cases.
gcc/testsuite/
* gcc.target/riscv/pr105314.c: Replace `dg-options' command with
`dg-skip-if'. Also reject "bne" with `dg-final'.
Robin Dapp [Wed, 24 Jan 2024 16:28:31 +0000 (17:28 +0100)]
genopinit: Split init_all_optabs [PR113575].
init_all_optabs initializes > 10000 patterns for riscv targets. This
leads to pathological situations in dataflow analysis (which can occur
with many adjacent stores).
To alleviate this this patch makes genopinit split the init_all_optabs
function into several init_optabs_xx functions that each initialize 1000
patterns.
With this change insn-opinit.cc's compilation time is reduced from 4+
minutes to 1:30 and memory consumption decreases from 1.2G to 630M.
gcc/ChangeLog:
PR other/113575
* genopinit.cc (main): Split init_all_optabs into functions
of 1000 patterns each.
Gaius Mulley [Fri, 26 Jan 2024 19:04:48 +0000 (19:04 +0000)]
modula2: detect string and pointer formal and actual parameter incompatibility
This patch improves the location accuracy of parameters and fixes bugs
in parameter checking in M2Check. It also corrects the location
of constant declarations.
gcc/m2/ChangeLog:
* gm2-compiler/M2Check.mod (dumpIndice): New procedure.
(dumpIndex): New procedure.
(dumptInfo): New procedure.
(buildError4): Add comment and pass formal and actual to
MetaError4. Improve text describing error.
(buildError2): Generate different error descriptions for
the three error kinds.
(checkConstMeta): Add block comment. Add more meta checks
and call doCheckPair to complete string const checking.
Add tinfo parameter.
(checkConstEquivalence): Add tinfo parameter.
* gm2-compiler/M2GCCDeclare.mod (PrintVerboseFromList):
Print the length of a const string.
* gm2-compiler/M2GenGCC.mod (CodeParam): Remove parameters
op1, op2 and op3.
(doParam): Add paramtok parameter. Use paramtok instead rather
than CurrentQuadToken.
(CodeParam): Rewrite.
* gm2-compiler/M2Quads.mod (CheckProcedureParameters):
Add comments explaining that const strings are not checked
in M2Quads.mod.
(FailParameter): Use MetaErrorT2 with tokpos rather than
MetaError2.
(doBuildBinaryOp): Assign OldPos and OperatorPos before the
IF block.
* gm2-compiler/SymbolTable.mod (PutConstString): Add call to
InitWhereDeclaredTok.
gcc/testsuite/ChangeLog:
* gm2/pim/fail/badpointer4.mod: New test.
* gm2/pim/fail/strconst.def: New test.
Richard Biener [Fri, 26 Jan 2024 11:57:10 +0000 (12:57 +0100)]
Avoid registering unsupported OMP offload devices
The following avoids registering unsupported GCN offload devices
when iterating over available ones. With a Zen4 desktop CPU
you will have an IGPU (unspported) which will otherwise be made
available. This causes testcases like
libgomp.c-c++-common/non-rect-loop-1.c which iterate over all
decives to FAIL.
libgomp/
* plugin/plugin-gcn.c (suitable_hsa_agent_p): Filter out
agents with unsupported ISA.
Richard Biener [Fri, 26 Jan 2024 11:35:57 +0000 (12:35 +0100)]
Fix architecture support in OMP_OFFLOAD_init_device for gcn
The following makes the existing architecture support check work
instead of being optimized away (enum vs. -1). This avoids
later asserts when we assume such devices are never actually
used.
libgomp/
* plugin/plugin-gcn.c
(EF_AMDGPU_MACH::EF_AMDGPU_MACH_UNSUPPORTED): Add.
(isa_code): Return that instead of -1.
(GOMP_OFFLOAD_init_device): Adjust.
Tobias Burnus [Fri, 26 Jan 2024 14:11:09 +0000 (15:11 +0100)]
amdgcn: config.gcc - enable gfx1030 and gfx1100 multilib; add them to the docs
gcc/ChangeLog:
* config.gcc (amdgcn-*-*): Add gfx1030 and gfx1100 to
TM_MULTILIB_CONFIG.
* doc/install.texi (Configuration amdgcn-*-*): Mention gfx1030/gfx1100.
* doc/invoke.texi (AMD GCN Options): Add gfx1030 and gfx1100 to
-march/-mtune.
libgomp/ChangeLog:
* testsuite/libgomp.c/declare-variant-4.h: Add variant functions
for gfx1030 and gfx1100.
* testsuite/libgomp.c/declare-variant-4-gfx1030.c: New test.
* testsuite/libgomp.c/declare-variant-4-gfx1100.c: New test.
Andrew Stubbs [Wed, 24 Jan 2024 11:07:28 +0000 (11:07 +0000)]
amdgcn: additional gfx1030/gfx1100 support
This is enough to get gfx1030 and gfx1100 working; there are still some test
failures to investigate, and probably some tuning to do.
gcc/ChangeLog:
* config/gcn/gcn-opts.h (TARGET_PACKED_WORK_ITEMS): Add TARGET_RDNA3.
* config/gcn/gcn-valu.md (all_convert): New iterator.
(<convop><V_INT_1REG_ALT:mode><V_INT_1REG:mode>2<exec>): New
define_expand, and rename the old one to ...
(*<convop><V_INT_1REG_ALT:mode><V_INT_1REG:mode>_sdwa<exec>): ... this.
(extend<V_INT_1REG_ALT:mode><V_INT_1REG:mode>2<exec>): Likewise, to ...
(extend<V_INT_1REG_ALT:mode><V_INT_1REG:mode>_sdwa<exec>): .. this.
(*<convop><V_INT_1REG_ALT:mode><V_INT_1REG:mode>_shift<exec>): New.
* config/gcn/gcn.cc (gcn_global_address_p): Use "offsetbits" correctly.
(gcn_hsa_declare_function_name): Update the vgpr counting for gfx1100.
* config/gcn/gcn.md (<u>mulhisi3): Disable on RDNA3.
(<u>mulqihi3_scalar): Likewise.
Nathaniel Shead [Tue, 2 Jan 2024 22:27:06 +0000 (09:27 +1100)]
c++: Emit definitions of ODR-used static members imported from modules [PR112899]
Static data members marked 'inline' should be emitted in TUs where they
are ODR-used. We need to make sure that inlines imported from modules
are correctly added to the 'pending_statics' map so that they get
emitted if needed, otherwise the attached testcase fails to link.
PR c++/112899
gcc/cp/ChangeLog:
* cp-tree.h (note_variable_template_instantiation): Rename to...
(note_vague_linkage_variable): ...this.
* decl2.cc (note_variable_template_instantiation): Rename to...
(note_vague_linkage_variable): ...this.
* pt.cc (instantiate_decl): Rename usage of above function.
* module.cc (trees_in::read_var_def): Remember pending statics
that we stream in.
gcc/testsuite/ChangeLog:
* g++.dg/modules/init-4_a.C: New test.
* g++.dg/modules/init-4_b.C: New test.
* g++.dg/modules/init-6_a.H: New test.
* g++.dg/modules/init-6_b.C: New test.
Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com> Reviewed-by: Patrick Palka <ppalka@redhat.com> Reviewed-by: Jason Merrill <jason@redhat.com
Richard Biener [Fri, 26 Jan 2024 08:29:22 +0000 (09:29 +0100)]
tree-optimization/113602 - datarefs of non-addressables
We can end up creating ADDR_EXPRs of non-addressable entities during
for example vectorization. The following plugs this in data-ref
analysis when that would create such invalid ADDR_EXPR as part of
analyzing the ref structure.
PR tree-optimization/113602
* tree-data-ref.cc (dr_analyze_innermost): Fail when
the base object isn't addressable.
Tobias Burnus [Fri, 26 Jan 2024 09:14:09 +0000 (10:14 +0100)]
gcn/gcn-hsa.h: Always pass --amdhsa-code-object-version= in ASM_SPEC
Since LLVM commit 082f87c9d418 (Pull Req. #79038; will become LLVM 18)
"[AMDGPU] Change default AMDHSA Code Object version to 5"
the default - when no --amdhsa-code-object-version= is used - was bumped.
Using --amdhsa-code-object-version=5 is supported (with unknown limitations)
since LLVM 14. GCC required for proper support at least LLVM 13.0.1 such
that explicitly using COV5 is not possible.
Unfortunately, the COV number matters for debugging ("-g") as mkoffload.cc
extracts debugging data from the host's object file and writes into an
an AMD GPU object file it creates. And all object files linked together
must have the same ABI version.
gcc/ChangeLog:
* config/gcn/gcn-hsa.h (ABI_VERSION_SPEC): New; creates the
"--amdhsa-code-object-version=" argument.
(ASM_SPEC): Use it; replace previous version of it.
Jiahao Xu [Tue, 16 Jan 2024 02:32:31 +0000 (10:32 +0800)]
LoongArch: Define LOGICAL_OP_NON_SHORT_CIRCUIT
Define LOGICAL_OP_NON_SHORT_CIRCUIT as 0, for a short-circuit branch, use the
short-circuit operation instead of the non-short-circuit operation.
SPEC2017 performance evaluation shows 1% performance improvement for fprate
GEOMEAN and no obvious regression for others. Especially, 526.blender_r +10.6%
on 3A6000.
This modification will introduce the following FAIL items:
Li Wei [Wed, 24 Jan 2024 09:44:17 +0000 (17:44 +0800)]
LoongArch: Optimize implementation of single-precision floating-point approximate division.
We found that in the spec17 521.wrf program, some loop invariant code generated
from single-precision floating-point approximate division calculation failed to
propose a loop. This is because the pseudo-register that stores the
intermediate temporary calculation results is rewritten in the implementation
of single-precision floating-point approximate division, failing to propose
invariants in the loop2_invariant pass. To this end, the intermediate temporary
calculation results are stored in new pseudo-registers without destroying the
read-write dependency, so that they could be recognized as loop invariants in
the loop2_invariant pass.
After optimization, the number of instructions of 521.wrf is reduced by 0.18%
compared with before optimization (1716612948501 -> 1713471771364).
The 2 loops in octfapg_universe can and will be vectorized now
after r14-333-g6d4b59a9356ac4 on targets that support multiplication
in the long type. But the testcase does not check vect_long_mult for
that, so this patch corrects that error and now the testcase passes correctly
on aarch64-linux-gnu (with and without SVE).
Built and tested on aarch64-linux-gnu (with and without SVE).
gcc/testsuite/ChangeLog:
PR testsuite/109705
* gcc.dg/vect/pr25413a.c: Expect 1 vectorized loops for !vect_long_mult
and 2 for vect_long_mult.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Andrew Pinski [Thu, 25 Jan 2024 21:45:59 +0000 (13:45 -0800)]
aarch64: Fix/avoid undefinedness in aarch64_classify_index [PR100212]
The problem here is we don't check the return value of exact_log2
and always use that result as shifter. This fixes the issue by avoiding
the shift if the value was `-1` (which means the value was not exact a power of 2);
in this case we could either check if the values was equal to -1 or not equal to because
we then assign -1 to shift if the constant value was not equal. I chose `!=` as
it seemed to be more obvious of what the code is doing.
Committed as obvious after a build/test for aarch64-linux-gnu.
gcc/ChangeLog:
PR target/100212
* config/aarch64/aarch64.cc (aarch64_classify_index): Avoid
undefined shift after the call to exact_log2.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Jakub Jelinek [Thu, 25 Jan 2024 23:08:36 +0000 (00:08 +0100)]
c++: Fix up build_m_component_ref [PR113599]
The following testcase reduced from GDB is miscompiled starting with
r14-5503 PR112427 change.
The problem is in the build_m_component_ref hunk, which changed
- datum = fold_build_pointer_plus (fold_convert (ptype, datum), component);
+ datum = cp_convert (ptype, datum, complain);
+ if (!processing_template_decl)
+ datum = build2 (POINTER_PLUS_EXPR, ptype,
+ datum, convert_to_ptrofftype (component));
+ datum = cp_fully_fold (datum);
Component is e, (sizetype) e is 16, offset of c inside of C.
ptype is A *, pointer to type of C::c and datum is &d.
Now, previously the above created ((A *) &d) p+ (sizetype) e which is correct,
but in the new code cp_convert sees that C has A as base class and
instead of returning (A *) &d, it returns &d.D.2800 where D.2800 is
the FIELD_DECL for the A base at offset 8 into C.
So, instead of computing ((A *) &d) p+ (sizetype) e it computes
&d.D.2800 p+ (sizetype) e, which is ((A *) &d) p+ 24.
The following patch fixes it by using convert instead of cp_convert which
eventually calls build_nop (ptype, datum).
2024-01-26 Jakub Jelinek <jakub@redhat.com>
PR c++/113599
* typeck2.cc (build_m_component_ref): Use convert instead of
cp_convert for pointer conversion.
Jason Merrill [Thu, 25 Jan 2024 17:02:07 +0000 (12:02 -0500)]
c++: array of PMF [PR113598]
Here AGGREGATE_TYPE_P includes pointers to member functions, which is not
what we want. Instead we should use class||array, as elsewhere in the
function.
Jason Merrill [Thu, 25 Jan 2024 19:45:35 +0000 (14:45 -0500)]
c++: co_await and initializer_list [PR109227]
Here we end up with an initializer_list of 'aa', a type with a non-trivial
destructor, and need to destroy it. The code called
build_special_member_call for cleanups, but that doesn't work for arrays, so
use cxx_maybe_build_cleanup instead. Let's go ahead and do that
everywhere that has been calling the destructor directly.
PR c++/109227
gcc/cp/ChangeLog:
* coroutines.cc (build_co_await): Use cxx_maybe_build_cleanup.
(build_actor_fn, process_conditional, maybe_promote_temps)
(morph_fn_to_coro): Likewise.
(expand_one_await_expression): Use build_cleanup.
gcc/testsuite/ChangeLog:
* g++.dg/coroutines/co-await-initlist2.C: New test.
Andrew Pinski [Thu, 25 Jan 2024 16:30:36 +0000 (08:30 -0800)]
aarch64: Fix undefinedness while testing the J constraint [PR100204]
The J constraint can invoke undefined behavior due to it taking the
negative of the ival if ival was HWI_MIN. The fix is simple as casting
to `unsigned HOST_WIDE_INT` before doing the negative of it. This
does that.
Committed as obvious after build/test for aarch64-linux-gnu.
gcc/ChangeLog:
PR target/100204
* config/aarch64/constraints.md (J): Cast to `unsigned HOST_WIDE_INT`
before taking the negative of it.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
[PR113526][LRA]: Fixing asm-flag-1.c failure on ARM
My recent patch for PR113356 results in failure asm-flag-1.c test on arm.
After the patch LRA treats asm operand pseudos as general regs. There
are too many such operands and LRA can not assign hard regs to all
operand pseudos. Actually we should not assign hard regs to the
operand pseudo at all. The following patch fixes this.
gcc/ChangeLog:
PR target/113526
* lra-constraints.cc (curr_insn_transform): Change class even for
spilled pseudo successfully matched with with NO_REGS.
Refactor the compare zero and jump pattern and use it to fix the issue.
gcc/ChangeLog:
PR target/112987
* config/aarch64/aarch64.cc (aarch64_gen_compare_zero_and_branch): New.
(aarch64_expand_epilogue): Use the new function.
(aarch64_split_compare_and_swap): Likewise.
(aarch64_split_atomic_op): Likewise.
Gaius Mulley [Thu, 25 Jan 2024 16:29:02 +0000 (16:29 +0000)]
modula2: add project regression test and badpointer tests
This patch adds four modula-2 testcases to the regression testsuite.
The project example stresses INC/DEC and range checking and the bad
pointer stress attempting to pass a string acual parameter to a
procedure with a pointer formal parameter.
gcc/testsuite/ChangeLog:
* gm2/pim/fail/badpointer.mod: New test.
* gm2/pim/fail/badpointer2.mod: New test.
* gm2/pim/fail/badpointer3.mod: New test.
* gm2/projects/pim/run/pass/pegfive/pegfive.mod: New test.
* gm2/projects/pim/run/pass/pegfive/projects-pim-run-pass-pegfive.exp: New test.
Robin Dapp [Mon, 15 Jan 2024 15:23:30 +0000 (16:23 +0100)]
fold-const: Handle AND, IOR, XOR with stepped vectors [PR112971].
Found in PR112971 this patch adds folding support for bitwise operations
of const duplicate zero/one vectors with stepped vectors.
On riscv we have the situation that a folding would perpetually continue
without simplifying because e.g. {0, 0, 0, ...} & {7, 6, 5, ...} would
not be folded to {0, 0, 0, ...}.
gcc/ChangeLog:
PR middle-end/112971
* fold-const.cc (simplify_const_binop): New function for binop
simplification of two constant vectors when element-wise
handling is not necessary.
(const_binop): Call new function.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/autovec/pr112971.c: New test.
Robin Dapp [Tue, 23 Jan 2024 11:44:20 +0000 (12:44 +0100)]
testsuite/vect: Add target checks to refined patterns.
On Solaris/SPARC several vector tests appeared to be regressing. They
were never vectorized but the checks before r14-3612-ge40edf64995769
would match regardless if a loop was actually vectorized or not.
The refined checks only match a successful vectorization attempt
but are run unconditionally. This patch adds target checks to them.
David Malcolm [Thu, 25 Jan 2024 15:06:12 +0000 (10:06 -0500)]
analyzer: fix defaults in compound assignments from non-zero offsets [PR112969]
Confusion in binding_cluster::maybe_get_compound_binding about whether
offsets are relative to the start of the region or to the start of the
cluster was leading to incorrect handling of default values, leading
to false positives from -Wanalyzer-use-of-uninitialized-value, from
-Wanalyzer-exposure-through-uninit-copy, and other logic errors.
Fixed thusly.
gcc/analyzer/ChangeLog:
PR analyzer/112969
* store.cc (binding_cluster::maybe_get_compound_binding): When
populating default_map, express the bit-range of the default key
for REG relative to REG, rather than to the base region.
gcc/testsuite/ChangeLog:
PR analyzer/112969
* c-c++-common/analyzer/compound-assignment-5.c (test_3): Remove
xfails, reorder tests.
* c-c++-common/analyzer/compound-assignment-pr112969.c: New test.
* gcc.dg/plugin/infoleak-pr112969.c: New test.
* gcc.dg/plugin/plugin.exp: Add infoleak-pr112969.c to
analyzer_kernel_plugin.c tests.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Gaius Mulley [Thu, 25 Jan 2024 15:04:53 +0000 (15:04 +0000)]
modula2: correct prototype for lseek within gcc/m2/gm2-libs/libc.def
This patch corrects the definition of lseek by changing the second
parameter to a CSSIZE_T rather than LONGINT and allow the return value
to be ignored.
gcc/m2/ChangeLog:
* gm2-libs/libc.def (lseek): Change the second parameter
type to CSSIZE_T and make the return value optional.
* gcc.target/riscv/cv-simd-abs-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-abs-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-add-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-add-div2-compile-1.c: New test.
* gcc.target/riscv/cv-simd-add-div4-compile-1.c: New test.
* gcc.target/riscv/cv-simd-add-div8-compile-1.c: New test.
* gcc.target/riscv/cv-simd-add-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-add-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-add-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-and-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-and-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-and-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-and-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avg-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avg-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avg-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avg-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avgu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avgu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avgu-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-avgu-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpeq-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpeq-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpeq-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpeq-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpge-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpge-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpge-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpge-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgeu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgeu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgeu-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgeu-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgt-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgt-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgt-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgt-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgtu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgtu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgtu-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpgtu-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmple-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmple-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmple-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmple-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpleu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpleu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpleu-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpleu-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmplt-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmplt-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmplt-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmplt-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpltu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpltu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpltu-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpltu-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpne-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpne-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpne-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cmpne-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxconj-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-i-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-i-div2-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-i-div4-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-i-div8-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-r-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-r-div2-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-r-div4-compile-1.c: New test.
* gcc.target/riscv/cv-simd-cplxmul-r-div8-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotsp-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotsp-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotsp-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotsp-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotup-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotup-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotup-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotup-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotusp-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotusp-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotusp-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-dotusp-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-extract-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-extract-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-extractu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-extractu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-insert-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-insert-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-march-compile-1.c: New test.
* gcc.target/riscv/cv-simd-max-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-max-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-max-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-max-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-maxu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-maxu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-maxu-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-maxu-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-min-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-min-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-min-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-min-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-minu-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-minu-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-minu-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-minu-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-neg-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-neg-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-or-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-or-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-or-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-or-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-pack-compile-1.c: New test.
* gcc.target/riscv/cv-simd-pack-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-packhi-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-packlo-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotsp-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotsp-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotsp-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotsp-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotup-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotup-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotup-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotup-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotusp-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotusp-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotusp-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sdotusp-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-shuffle-sci-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-shuffle2-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-shuffle2-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-shufflei0-sci-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-shufflei1-sci-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-shufflei2-sci-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-shufflei3-sci-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sll-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sll-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sll-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sll-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sra-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sra-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sra-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sra-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-srl-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-srl-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-srl-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-srl-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sub-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sub-div2-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sub-div4-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sub-div8-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sub-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sub-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-sub-sc-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-subrotmj-compile-1.c: New test.
* gcc.target/riscv/cv-simd-subrotmj-div2-compile-1.c: New test.
* gcc.target/riscv/cv-simd-subrotmj-div4-compile-1.c: New test.
* gcc.target/riscv/cv-simd-subrotmj-div8-compile-1.c: New test.
* gcc.target/riscv/cv-simd-xor-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-xor-h-compile-1.c: New test.
* gcc.target/riscv/cv-simd-xor-sc-b-compile-1.c: New test.
* gcc.target/riscv/cv-simd-xor-sc-h-compile-1.c: New test.
* lib/target-supports.exp: Add proc for XCVsimd extension.
Jakub Jelinek [Thu, 25 Jan 2024 12:15:23 +0000 (13:15 +0100)]
convert: Fix test for out of bounds shift count [PR113574]
The following patch is miscompiled, because convert_to_integer_1 for
LSHIFT_EXPR tests if the INTEGER_CST shift count is too high, but
incorrectly compares it against TYPE_SIZE rather than TYPE_PRECISION.
The type in question is unsigned _BitInt(1), which has TYPE_PRECISION 1,
TYPE_SIZE 8, and the shift count is 2 in that case.
2024-01-25 Jakub Jelinek <jakub@redhat.com>
PR middle-end/113574
* convert.cc (convert_to_integer_1) <case LSHIFT_EXPR>: Compare shift
count against TYPE_PRECISION rather than TYPE_SIZE.
When generalising vector_cst_all_same, I'd forgotten to update
VECTOR_CST_ENCODED_ELT to VECTOR_CST_ELT. The check deliberately
looks at implicitly encoded elements in some cases.
aarch64: Handle overlapping registers in movv8di [PR113550]
The LS64 movv8di pattern didn't handle loads that overlapped with
the address register (unless the overlap happened to be in the
last subload).
gcc/
PR target/113550
* config/aarch64/aarch64-simd.md: In the movv8di splitter, check
whether each split instruction is a load that clobbers the source
address. Emit that instruction last if so.
gcc/testsuite/
PR target/113550
* gcc.target/aarch64/pr113550.c: New test.
aarch64: Avoid paradoxical subregs in UXTL split [PR113485]
g:74e3e839ab2d36841320 handled the UXTL{,2}-ZIP[12] optimisation
in split1. The UXTL input is a 64-bit vector of N-bit elements
and the result is a 128-bit vector of 2N-bit elements. The
corresponding ZIP1 operates on 128-bit vectors of N-bit elements.
This meant that the ZIP1 input had to be a 128-bit paradoxical subreg
of the 64-bit UXTL input. In the PRs, it wasn't possible to generate
this subreg because the inputs were already subregs of a x[234]
structure of 64-bit vectors.
I don't think the same thing can happen for UXTL2->ZIP2 because
UXTL2 input is a 128-bit vector rather than a 64-bit vector.
It isn't really necessary for ZIP1 to take 128-bit inputs,
since the upper 64 bits are ignored. This patch therefore adds
a pattern for 64-bit → 128-bit ZIP1s.
In principle, we should probably use this form for all ZIP1s.
But in practice, that creates an awkward special case, and
would be quite invasive for stage 4.
gcc/
PR target/113485
* config/aarch64/aarch64-simd.md (aarch64_zip1<mode>_low): New
pattern.
(<optab><Vnarrowq><mode>2): Use it instead of generating a
paradoxical subreg for the input.
gcc/testsuite/
PR target/113485
* gcc.target/aarch64/pr113485.c: New test.
* gcc.target/aarch64/pr113573.c: Likewise.
Juzhe-Zhong [Thu, 25 Jan 2024 08:24:26 +0000 (16:24 +0800)]
RISC-V: Remove redundant full available computation [NFC]
Notice full available is computed evey round of earliest fusion which is redundant.
Actually we only need to compute it once in phase 3.
It's NFC patch and tested no regression. Committed.
gcc/ChangeLog:
* config/riscv/riscv-vsetvl.cc (pre_vsetvl::compute_vsetvl_def_data): Remove
redundant full available computation.
(pre_vsetvl::pre_global_vsetvl_info): Ditto.
Andrew Pinski [Wed, 24 Jan 2024 18:28:37 +0000 (10:28 -0800)]
Fix a few vect gimple testcases for LLP64 targets (e.g. mingw) [PR113548]
This fixes of the vect testcases which uses the gimple FE for LLP64 targets.
The testcases use directly `unsigned long` for the addition to pointers
when they should be using `__SIZETYPE__`. This changes to use that instead.
Jiahao Xu [Wed, 24 Jan 2024 09:19:13 +0000 (17:19 +0800)]
LoongArch: Remove vec_concatz<mode> pattern.
It is incorrect to use vld/vori to implement the vec_concatz<mode> because when the LSX
instruction is used to update the value of the vector register, the upper 128 bits of
the vector register will not be zeroed.
gcc/ChangeLog:
* config/loongarch/lasx.md (@vec_concatz<mode>): Remove this define_insn pattern.
* config/loongarch/loongarch.cc (loongarch_expand_vector_group_init): Use vec_concat<mode>.
Richard Biener [Wed, 24 Jan 2024 13:55:49 +0000 (14:55 +0100)]
tree-optimization/113576 - non-empty latch and may_be_zero vectorization
We can't support niters with may_be_zero when we end up with a
non-empty latch due to early exit peeling. At least not in
the simplistic way the vectorizer handles this now. Disallow
it again for exits that are not the last one.
PR tree-optimization/113576
* tree-vect-loop.cc (vec_init_loop_exit_info): Only allow
exits with may_be_zero niters when its the last one.
Lulu Cheng [Tue, 23 Jan 2024 03:28:09 +0000 (11:28 +0800)]
LoongArch: Disable TLS type symbols from generating non-zero offsets.
TLS gd ld and ie type symbols will generate corresponding GOT entries,
so non-zero offsets cannot be generated.
The address of TLS le type symbol+addend is not implemented in binutils,
so non-zero offset is not generated here for the time being.
gcc/ChangeLog:
* config/loongarch/loongarch.cc (loongarch_symbolic_constant_p):
For symbols of type tls, non-zero Offset is not generated.
liuhongt [Tue, 23 Jan 2024 05:35:39 +0000 (13:35 +0800)]
Adjust hwasan testcase for x86 target.
There're 2 cases:
1. hwasan-poison-optimisation.c is supposed to scan call to
__hwasan_tag_mismatch4, and x86 have different mnemonic(call) from
aarch64(bl), so adjust testcase to scan either call or bl.
2. alloca-outside-caught.c/vararray-outside-caught.c are supposed to
scan mismatched tags and expected the tag corresponding to
out-of-bounds memory is 00, but for x86 the continous stack is
allocated by other local variable/array which is assigned with a
different tag, but still there're mismatches. So adjust testcase to
scan XX/XX instead of XX/00.
Nathaniel Shead [Fri, 19 Jan 2024 11:24:18 +0000 (22:24 +1100)]
c++: Handle partial specialisations in GMF [PR113405]
Currently, when exporting names from the GMF, or within header modules,
for a set of constrained partial specialisations we only emit the first
one. This is because the 'type_specialization' list only includes a
single specialization per template+argument list; constraints are not
considered here.
The existing code uses a separate 'partial_specializations' list to
track this instead, but currently it's only used for declarations in the
module purview. This patch makes use of this list for all declarations.
PR c++/113405
gcc/cp/ChangeLog:
* module.cc (set_defining_module): Track partial specialisations
for all declarations.
gcc/testsuite/ChangeLog:
* g++.dg/modules/concept-9.h: New test.
* g++.dg/modules/concept-9_a.C: New test.
* g++.dg/modules/concept-9_b.C: New test.
* g++.dg/modules/concept-10_a.H: New test.
* g++.dg/modules/concept-10_b.C: New test.
Currently, importing a namespace declarations marks it as imported, and
so marks it as originating from the module that it was imported from.
This is usually harmless, but causes problems with nested namespaces.
In the linked PR, what happens is that the namespace 'A' imported from
the module ends up not being considered when creating the 'A' namespace
within its own TU, and thus it has its 'cp_binding_level' recreated.
However, by this point 'A::B' has already been imported, and so the
'level_chain' member no longer correctly points at 'A's binding level,
so the sanity check for this in 'resume_scope' ICEs.
Since as far as I can tell there's no reason for imported namespaces to
be attached to any specific module (namespace declarations with external
linkage are always attached to the global module by [module.unit] p7.2),
this patch just removes the 'imported' flag, which stops code from
caring about its originating module.
This patch also makes some minor adjustments to existing tests to cater
for the new dumped name.
PR c++/100707
gcc/cp/ChangeLog:
* name-lookup.cc (add_imported_namespace): Don't mark namespaces
as imported.
gcc/testsuite/ChangeLog:
* g++.dg/modules/indirect-1_b.C: Adjust to handle namespaces not
being attached to the module they were imported from.
* g++.dg/modules/indirect-1_c.C: Likewise.
* g++.dg/modules/indirect-2_b.C: Likewise.
* g++.dg/modules/indirect-2_c.C: Likewise.
* g++.dg/modules/indirect-3_b.C: Likewise.
* g++.dg/modules/indirect-3_c.C: Likewise.
* g++.dg/modules/indirect-4_b.C: Likewise.
* g++.dg/modules/indirect-4_c.C: Likewise.
* g++.dg/modules/namespace-5_a.C: New test.
* g++.dg/modules/namespace-5_b.C: New test.
* g++.dg/modules/namespace-5_c.C: New test.
Andrew Pinski [Thu, 25 Jan 2024 00:33:38 +0000 (16:33 -0800)]
Fix check_effective_target_vect_long_mult
My last commit I tested on aarch64 but vect_long_mult was not actually invoked
and I didn't notice that I was missing a `[` in front of check_effective_target_aarch64_sve.
When I ran the testsuite on x86_64, I got the failure.
Committed as obvious after testing on x86_64.
gcc/testsuite/ChangeLog:
* lib/target-supports.exp (check_effective_target_vect_long_mult): Fix
small typo for aarch64*-*-*.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Palmer Dabbelt [Wed, 13 Dec 2023 03:54:05 +0000 (19:54 -0800)]
RISC-V: Don't make Ztso imply A
I can't actually find anything in the ISA manual that makes Ztso imply
A. In theory the memory ordering is just a different thing that the set
of availiable instructions (ie, Ztso without A would still imply TSO for
loads and stores). It also seems like a configuration that could be
sane to build: without A it's all but impossible to write any meaningful
multi-core code, and TSO is really cheap for a single core.
That said, I think it's kind of reasonable to provide A to users asking
for Ztso. So maybe even if this was a mistake it's the right thing to
do?
Patrick Palka [Wed, 24 Jan 2024 22:11:09 +0000 (17:11 -0500)]
c++: ambiguous member lookup for rewritten cands [PR113529]
Here we handle the operator expression u < v inconsistently: in a SFINAE
context we accept it, and in a non-SFINAE context we reject it with
error: request for member 'operator<=>' is ambiguous
as per [class.member.lookup]/6. This inconsistency is ultimately
because we neglect to propagate error_mark_node after recursing in
add_operator_candidates, fixed like so.
PR c++/113529
gcc/cp/ChangeLog:
* call.cc (add_operator_candidates): Propagate error_mark_node
result after recursing to find rewritten candidates.
Harald Anlauf [Wed, 24 Jan 2024 19:27:36 +0000 (20:27 +0100)]
Fortran: passing of optional dummies to elemental procedures [PR113377]
gcc/fortran/ChangeLog:
PR fortran/113377
* trans-expr.cc (conv_dummy_value): New.
(gfc_conv_procedure_call): Factor code for handling dummy arguments
with the VALUE attribute in the scalar case into conv_dummy_value().
Reuse and adjust for calling elemental procedures.
gcc/testsuite/ChangeLog:
PR fortran/113377
* gfortran.dg/optional_absent_10.f90: New test.
Andrew Pinski [Wed, 24 Jan 2024 08:00:34 +0000 (00:00 -0800)]
Fix vect_long_mult for aarch64 [PR109705]
On aarch64, vectorization of `long` multiply can be done if SVE is enabled
or if long is 32bit (ILP32). It can also be done for constants too but there
is no effective target test for that just yet.
Build and tested on aarch64-linux-gnu with no regressions (also tested with SVE enabled).
Martin Jambor [Wed, 24 Jan 2024 18:12:31 +0000 (19:12 +0100)]
ipa: Self-DCE of uses of removed call LHSs (PR 108007)
PR 108007 is another manifestation where we rely on DCE to clean-up
after IPA-SRA and if the user explicitely switches DCE off, IPA-SRA
can leave behind statements which are fed uninitialized values and
trap, even though their results are themselves never used.
I have already fixed this for unused parameters in callees, this bug
shows that almost the same thing can happen for removed returns, on
the side of callers. This means that the issue has to be fixed
elsewhere, in call redirection. This patch adds a function which
looks for (and through, using a work-list) uses of operations fed
specific SSA names and removes them all.
That would have been easy if it wasn't for debug statements during
tree-inline (from which call redirection is also invoked). Debug
statements are decoupled from the rest at this point and iterating
over uses of SSAs does not bring them up. During tree-inline they are
handled especially at the end, I assume in order to make sure that
relative ordering of UIDs are the same with and without debug info.
This means that during tree-inline we need to make a hash of killed
SSAs, that we already have in copy_body_data, available to the
function making the purging. So the patch duly does also that, making
the interface slightly ugly. Moreover, all newly unused SSA names
need to be freed and as PR 112616 showed, it must be done in a defined
order, which is what newly added ipa_release_ssas_in_hash does.
gcc/ChangeLog:
2024-01-12 Martin Jambor <mjambor@suse.cz>
PR ipa/108007
PR ipa/112616
* cgraph.h (cgraph_edge): Add a parameter to
redirect_call_stmt_to_callee.
* ipa-param-manipulation.h (ipa_param_adjustments): Add a
parameter to modify_call.
(ipa_release_ssas_in_hash): Declare.
* cgraph.cc (cgraph_edge::redirect_call_stmt_to_callee): New
parameter killed_ssas, pass it to padjs->modify_call.
* ipa-param-manipulation.cc (purge_all_uses): New function.
(ipa_param_adjustments::modify_call): New parameter killed_ssas.
Instead of substituting uses, invoke purge_all_uses. If
hash of killed SSAs has not been provided, create a temporary one
and release SSAs that have been added to it.
(compare_ssa_versions): New function.
(ipa_release_ssas_in_hash): Likewise.
* tree-inline.cc (redirect_all_calls): Create
id->killed_new_ssa_names earlier, pass it to edge redirection,
adjust a comment.
(copy_body): Release SSAs in id->killed_new_ssa_names.
Andrew Pinski [Thu, 18 Jan 2024 18:40:04 +0000 (10:40 -0800)]
aarch64: Fix __builtin_apply with -mgeneral-regs-only [PR113486]
The problem here is the builtin apply mechanism thinks the FP registers
are to be used due to get_raw_arg_mode not returning VOIDmode. This
fixes that oversight and the backend now returns VOIDmode for non-general-regs
if TARGET_GENERAL_REGS_ONLY is true.
Built and tested for aarch64-linux-gnu with no regressions.
PR target/113486
gcc/ChangeLog:
* config/aarch64/aarch64.cc (aarch64_get_reg_raw_mode): For
TARGET_GENERAL_REGS_ONLY, return VOIDmode for non-GP_REGNUM_P regno.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/builtin_apply-1.c: New test.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Since the match.pd transforms (zero_one == 0) ? y : z <op> y,
into ((typeof(y))zero_one * z) <op> y. Add splitters to recongize
this expression to generate SFB instructions.
gcc/ChangeLog:
PR target/113095
* config/riscv/sfb.md: New splitters to rewrite single bit
sign extension as the condition to SFB instructions.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/sfb.c: New test.
* gcc.target/riscv/pr113095.c: New test.
Jan Hubicka [Wed, 24 Jan 2024 17:13:17 +0000 (18:13 +0100)]
Add -fmin-function-alignmnet
-falign-functions is ignored in cold code, since it is an optimization intended to
improve instruction prefetch. In some case it is necessary to force alignment for
all functions, so this patch adds -fmin-function-alignment for this purpose.
gcc/ChangeLog:
PR middle-end/88345
* common.opt: (flimit-function-alignment): Reorder alphabeticaly
(fmin-function-alignment): New parameter.
* doc/invoke.texi: (-fmin-function-alignment): Document.
(-falign-functions,-falign-loops,-falign-labels): Mention that
aglinments are ignored in cold code.
* varasm.cc (assemble_start_function): Handle min-function-alignment.
Tamar Christina [Wed, 24 Jan 2024 15:58:34 +0000 (15:58 +0000)]
AArch64: Fix expansion of Advanced SIMD div and mul using SVE [PR109636]
As suggested in the ticket this replaces the expansion by converting the
Advanced SIMD types to SVE types by simply printing out an SVE register for
these instructions.
This fixes the subreg issues since there are no subregs involved anymore.
PR target/109636
* gcc.target/aarch64/sve/pr109636_1.c: New test.
* gcc.target/aarch64/sve/pr109636_2.c: New test.
* gcc.target/aarch64/sve2/pr109636_1.c: New test.
Martin Jambor [Wed, 24 Jan 2024 15:19:48 +0000 (16:19 +0100)]
ipa-cp: Fix check for exceeding param_ipa_cp_value_list_size (PR 113490)
When the check for exceeding param_ipa_cp_value_list_size limit was
modified to be ignored for generating values from self-recursive
calls, it should have been changed from equal to, to equals to or is
greater than. This omission manifests itself as PR 113490.
When I examined the condition I also noticed that the parameter should
come from the callee rather than the caller, since the value list is
associated with the former and not the latter. In practice the limit
is of course very likely to be the same, but I fixed this aspect of
the condition too. I briefly audited all other uses of opt_for_fn in
ipa-cp.cc and all the others looked OK.
gcc/ChangeLog:
2024-01-19 Martin Jambor <mjambor@suse.cz>
PR ipa/113490
* ipa-cp.cc (ipcp_lattice<valtype>::add_value): Bail out if value
count is equal or greater than the limit. Use the limit from the
callee.
David Malcolm [Wed, 24 Jan 2024 15:11:35 +0000 (10:11 -0500)]
analyzer: fix taint false +ve due to overzealous state purging [PR112977]
gcc/analyzer/ChangeLog:
PR analyzer/112977
* engine.cc (impl_region_model_context::on_liveness_change): Pass
m_ext_state to sm_state_map::on_liveness_change.
* program-state.cc (sm_state_map::on_svalue_leak): Guard removal
of map entry based on can_purge_p.
(sm_state_map::on_liveness_change): Add ext_state param. Add
workaround for bad interaction between state purging and
alt-inherited sm-state.
* program-state.h (sm_state_map::on_liveness_change): Add
ext_state param.
* sm-taint.cc
(taint_state_machine::has_alt_get_inherited_state_p): New.
(taint_state_machine::can_purge_p): Return false for "has_lb" and
"has_ub".
* sm.h (state_machine::has_alt_get_inherited_state_p): New vfunc.
PR analyzer/112927 reports a false positive from -Wanalyzer-tainted-size
seen on the Linux kernel's drivers/char/ipmi/ipmi_devintf.c with the
analyzer kernel plugin.
The issue is that in:
(A):
if (msg->data_len > 272) {
return -90;
}
(B):
n = msg->data_len;
__check_object_size(to, n);
n = copy_from_user(to, from, n);
the analyzer is treating __check_object_size as having arbitrary side
effects, and, in particular could modify msg->data_len. Hence the
sanitization that occurs at (A) above is treated as being for a
different value than the size obtained at (B), hence the bogus warning
at the call to copy_from_user.
Fixed by extending the analyzer kernel plugin to "teach" it that
__check_object_size has no side effects.
gcc/testsuite/ChangeLog:
PR analyzer/112927
* gcc.dg/plugin/analyzer_kernel_plugin.c
(class known_function___check_object_size): New.
(kernel_analyzer_init_cb): Register it.
* gcc.dg/plugin/plugin.exp: Add taint-pr112927.c.
* gcc.dg/plugin/taint-pr112927.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
Gaius Mulley [Wed, 24 Jan 2024 13:11:46 +0000 (13:11 +0000)]
PR modula2/113559 FIO.mod lseek requires cssize_t rather than longint
This patch fixes a bug in gcc/m2/gm2-libs/FIO.mod which failed to cast the
whence parameter into the correct type. The patch casts the whence
parameter for lseek to SYSTEM.CSSIZE_T.
gcc/m2/ChangeLog:
PR modula2/113559
* gm2-libs/FIO.mod (SetPositionFromBeginning): Convert pos into
CSSIZE_T during call to lseek.
(SetPositionFromEnd): Convert pos into CSSIZE_T during call to
lseek.
The problem is that the 32-bit Solaris/x86 triple still uses i386,
although gcc defaults to -mpentium4. However, the tests only handle
x86_64* and i686*, although the tests don't seem to require some
specific ISA extension not covered by vect_simd_clones.
To fix this, the tests now allow generic i?86. At the same time, I've
removed the wildcards from x86_64* and i686* since DejaGnu uses the
canonical forms.
Tested on i386-pc-solaris2.11 and i686-pc-linux-gnu.
YunQiang Su [Fri, 19 Jan 2024 10:23:21 +0000 (18:23 +0800)]
MIPS: Accept arguments for -mexplicit-relocs
GAS introduced explicit relocs since 2001, and %pcrel_hi/low were
introduced in 2014. In future, we may introduce more.
Let's convert -mexplicit-relocs option, and accpet options:
none, base, pcrel.
We also update gcc/configure.ac to set the value to option
the gas support when GCC itself is built.
gcc
* configure.ac: Detect the explicit relocs support for
mips, and define C macro MIPS_EXPLICIT_RELOCS.
* config.in: Regenerated.
* configure: Regenerated.
* doc/invoke.texi(MIPS Options): Add -mexplicit-relocs.
* config/mips/mips-opts.h: Define enum mips_explicit_relocs.
* config/mips/mips.cc(mips_set_compression_mode): Sorry if
!TARGET_EXPLICIT_RELOCS instead of just set it.
* config/mips/mips.h: Define TARGET_EXPLICIT_RELOCS and
TARGET_EXPLICIT_RELOCS_PCREL with mips_opt_explicit_relocs.
* config/mips/mips.opt: Introduce -mexplicit-relocs= option
and define -m(no-)explicit-relocs as aliases.
Alex Coplan [Wed, 24 Jan 2024 09:22:19 +0000 (09:22 +0000)]
aarch64: Re-enable ldp/stp fusion pass
Since, to the best of my knowledge, all reported regressions related to
the ldp/stp fusion pass have now been fixed, and PGO+LTO bootstrap with
--enable-languages=all is working again with the passes enabled, this
patch turns the passes back on by default, as agreed with Jakub here:
Tamar Christina [Wed, 24 Jan 2024 07:37:17 +0000 (07:37 +0000)]
middle-end: fix epilog reductions when vector iters peeled [PR113364]
This fixes a bug where vect_create_epilog_for_reduction does not handle the
case where all exits are early exits. In this case we should do like induction
handling code does and not have a main exit.
This shows that some new miscompiles are happening (stage3 is likely miscompiled)
but that's unrelated to this patch and I'll look at it next.
gcc/ChangeLog:
PR tree-optimization/113364
* tree-vect-loop.cc (vect_create_epilog_for_reduction): If all exits all
early exits then we must reduce from the first offset for all of them.
gcc/testsuite/ChangeLog:
PR tree-optimization/113364
* gcc.dg/vect/vect-early-break_107-pr113364.c: New test.
Huanghui Nie [Mon, 22 Jan 2024 05:45:48 +0000 (06:45 +0100)]
libstdc++: [_Hashtable] Remove useless check for _M_before_begin node
When removing the first node of a bucket it is useless to check if this bucket
is the one containing the _M_before_begin node. The bucket before-begin node is
already transfered to the next pointed-to bucket regardeless if it is the container
before-begin node.
libstdc++-v3/ChangeLog:
* include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
_M_before_begin check and cleanup implementation.
Patrick O'Neill [Wed, 24 Jan 2024 00:36:53 +0000 (16:36 -0800)]
RISC-V: Add regression test for vsetvl bug pr113429
The reduced testcase for pr113429 (cam4 failure) needed additional
modules so it wasn't committed.
The fuzzer found a c testcase that was also fixed with pr113429's fix.
Adding it as a regression test.
PR target/113429
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/vsetvl/pr113429.c: New test.
Signed-off-by: Patrick O'Neill <patrick@rivosinc.com>
Juzhe-Zhong [Tue, 23 Jan 2024 10:12:49 +0000 (18:12 +0800)]
RISC-V: Fix large memory usage of VSETVL PASS [PR113495]
SPEC 2017 wrf benchmark expose unreasonble memory usage of VSETVL PASS
that is, VSETVL PASS consume over 33 GB memory which make use impossible
to compile SPEC 2017 wrf in a laptop.
Marek Polacek [Fri, 19 Jan 2024 18:59:41 +0000 (13:59 -0500)]
c++: -Wdangling-reference and lambda false warning [PR109640]
-Wdangling-reference checks if a function receives a temporary as its
argument, and only warns if any of the arguments was a temporary. But
we should not warn when the temporary represents a lambda or we generate
false positives as in the attached testcases.
PR c++/113256
PR c++/111607
PR c++/109640
gcc/cp/ChangeLog:
* call.cc (do_warn_dangling_reference): Don't warn if the temporary
is of lambda type.
gcc/testsuite/ChangeLog:
* g++.dg/warn/Wdangling-reference14.C: New test.
* g++.dg/warn/Wdangling-reference15.C: New test.
* g++.dg/warn/Wdangling-reference16.C: New test.
Jakub Jelinek [Tue, 23 Jan 2024 18:59:00 +0000 (19:59 +0100)]
c: Call c_fully_fold on __atomic_* operands in atomic_bitint_fetch_using_cas_loop [PR113518]
As the following testcase shows, I forgot to call c_fully_fold on the
__atomic_*/__sync_* operands called on _BitInt address, the expressions
are then used inside of TARGET_EXPR initializers etc. and are never fully
folded later, which means we can ICE e.g. on C_MAYBE_CONST_EXPR trees
inside of those.
The following patch fixes it, while the function currently is only called
in the C FE because C++ doesn't support BITINT_TYPE, I think guarding the
calls on !c_dialect_cxx () is safer.
2024-01-23 Jakub Jelinek <jakub@redhat.com>
PR c/113518
* c-common.cc (atomic_bitint_fetch_using_cas_loop): Call c_fully_fold
on lhs_addr, val and model for C.
Andrew Pinski [Tue, 23 Jan 2024 17:42:51 +0000 (17:42 +0000)]
aarch64/expr: Use ccmp when the outer expression is used twice [PR100942]
Ccmp is not used if the result of the and/ior is used by both
a GIMPLE_COND and a GIMPLE_ASSIGN. This improves the code generation
here by using ccmp in this case.
Two changes is required, first we need to allow the outer statement's
result be used more than once.
The second change is that during the expansion of the gimple, we need
to try using ccmp. This is needed because we don't use expand the ssa
name of the lhs but rather expand directly from the gimple.
A small note on the ccmp_4.c testcase, we should be able to get slightly
better than with this patch but it is one extra instruction compared to
before.
PR target/100942
gcc/ChangeLog:
* ccmp.cc (ccmp_candidate_p): Add outer argument.
Allow if the outer is true and the lhs is used more
than once.
(expand_ccmp_expr): Update call to ccmp_candidate_p.
* expr.h (expand_expr_real_gassign): Declare.
* expr.cc (expand_expr_real_gassign): New function, split out from...
(expand_expr_real_1): ...here.
* cfgexpand.cc (expand_gimple_stmt_1): Use expand_expr_real_gassign.
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/ccmp_3.c: New test.
* gcc.target/aarch64/ccmp_4.c: New test.
* gcc.target/aarch64/ccmp_5.c: New test.
Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com> Co-Authored-By: Richard Sandiford <richard.sandiford@arm.com>
Alex Coplan [Tue, 16 Jan 2024 21:20:45 +0000 (21:20 +0000)]
aarch64: Fix up debug uses in ldp/stp pass [PR113089]
As the PR shows, we were missing code to update debug uses in the
load/store pair fusion pass. This patch fixes that.
The patch tries to give a complete treatment of the debug uses that will
be affected by the changes we make, and in particular makes an effort to
preserve debug info where possible, e.g. when re-ordering an update of
a base register by a constant over a debug use of that register. When
re-ordering loads over a debug use of a transfer register, we reset the
debug insn. Likewise when re-ordering stores over debug uses of mem.
While doing this I noticed that try_promote_writeback used a strange
choice of move_range for the pair insn, in that it chose the previous
nondebug insn instead of the insn itself. Since the insn is being
changed, these move ranges are equivalent (at least in terms of nondebug
insn placement as far as RTL-SSA is concerned), but I think it is more
natural to choose the pair insn itself. This is needed to avoid
incorrectly updating some debug uses.
gcc/ChangeLog:
PR target/113089
* config/aarch64/aarch64-ldp-fusion.cc (reset_debug_use): New.
(fixup_debug_use): New.
(fixup_debug_uses_trailing_add): New.
(fixup_debug_uses): New. Use it ...
(ldp_bb_info::fuse_pair): ... here.
(try_promote_writeback): Call fixup_debug_uses_trailing_add to
fix up debug uses of the base register that are affected by
folding in the trailing add insn.
gcc/testsuite/ChangeLog:
PR target/113089
* gcc.c-torture/compile/pr113089.c: New test.
Alex Coplan [Mon, 15 Jan 2024 17:13:06 +0000 (17:13 +0000)]
aarch64: Re-parent trailing nondebug base reg uses [PR113089]
While working on PR113089, I realised we where missing code to re-parent
trailing nondebug uses of the base register in the case of cancelling
writeback in the load/store pair pass. This patch fixes that.
gcc/ChangeLog:
PR target/113089
* config/aarch64/aarch64-ldp-fusion.cc (ldp_bb_info::fuse_pair):
Update trailing nondebug uses of the base register in the case
of cancelling writeback.
Alex Coplan [Mon, 15 Jan 2024 11:07:48 +0000 (11:07 +0000)]
aarch64: Don't record hazards against paired insns [PR113356]
For the testcase in the PR, we try to pair insns where the first has
writeback and the second uses the updated base register. This causes us
to record a hazard against the second insn, thus narrowing the move
range away from the end of the BB.
However, it isn't meaningful to record hazards against the other insn
in the pair, as this doesn't change which pairs can be formed, and also
doesn't change where the pair is formed (from the perspective of
nondebug insns).
To see why this is the case, consider the two cases:
- Suppoe we are finding hazards for insns[0]. If we record a hazard
against insns[1], then range.last becomes
insns[1]->prev_nondebug_insn (), but note that this is equivalent to
inserting after insns[1] (since insns[1] is being changed).
- Now consider finding hazards for insns[1]. Suppose we record
insns[0] as a hazard. Then we set range.first = insns[0], which is a
no-op.
As such, it seems better to never record hazards against the other insn
in the pair, as we check whether the insns themselves are suitable for
combination separately (e.g. for ldp checking that they use distinct
transfer registers). Avoiding unnecessarily narrowing the move range
avoids unnecessarily re-ordering over debug insns.
This should also mean that we can only narrow the move range away from
the end of the BB in the case that we record a hazard for insns[0]
against insns[1]->prev_nondebug_insn () or earlier. This means that for
the non-call-exceptions case, either the move range includes insns[1],
or we reject the pair (thus the assert tripped in the PR should always
hold).
gcc/ChangeLog:
PR target/113356
* config/aarch64/aarch64-ldp-fusion.cc (ldp_bb_info::try_fuse_pair):
Don't record hazards against the opposite insn in the pair.
gcc/testsuite/ChangeLog:
PR target/113356
* gcc.target/aarch64/pr113356.C: New test.