platform/upstream/llvm.git
18 months ago[LICM] Reassociate GEPs to allow hoisting
Nikita Popov [Fri, 24 Mar 2023 14:10:53 +0000 (15:10 +0100)]
[LICM] Reassociate GEPs to allow hoisting

Reassociate gep (gep ptr, idx1), idx2 to gep (gep ptr, idx2), idx1
if this would make the inner GEP loop invariant and thus hoistable.

This is intended to replace an InstCombine fold that does this (in
https://github.com/llvm/llvm-project/blob/04f61fb73dc6a994ab267d431f2fdaedc67430ff/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp#L2006).
The problem with the InstCombine fold is that LoopInfo is an optional
dependency, so it is not performed reliably.

Differential Revision: https://reviews.llvm.org/D146813

18 months ago[ARM] Convert test to opaque pointers
Nikita Popov [Tue, 4 Apr 2023 09:27:43 +0000 (11:27 +0200)]
[ARM] Convert test to opaque pointers

When converting this test to opaque pointers, we get a register
move between the call and the inline asm. However, the test
comment specifically says that there should be nothing between them.

As far as I can tell, this is fine, both in that the inline asm
doesn't use the relevant registers, but also more generally
because the inline asm doesn't declare any clobbers, so really
LLVM can do whatever, side effects or not. The test was added
by 618ce3e85ed1c68e89dc696b7c9ab94a6a910797 with only a reference
to Apple's internal issue tracker.

Differential Revision: https://reviews.llvm.org/D147512

18 months ago[clang] Add test for CWG1822
Vlad Serebrennikov [Tue, 11 Apr 2023 08:07:00 +0000 (11:07 +0300)]
[clang] Add test for CWG1822

[[https://wg21.link/p1787 | P1787]]: CWG1822 is resolved by specifying that the body of a lambda remains in the surrounding (function parameter) scope.
Wording: A parameter-declaration-clause P introduces a function parameter scope that includes P. <...> If P is associated with a lambda-declarator, its scope extends to the end of the compound-statement in the lambda-expression. ([basic.scope.param])

Reviewed By: #clang-language-wg, shafik

Differential Revision: https://reviews.llvm.org/D147836

18 months ago[InstCombine] Allow splats with poison/undef in llvm::decomposeBitTestICmp
John McIver [Tue, 11 Apr 2023 08:03:01 +0000 (09:03 +0100)]
[InstCombine] Allow splats with poison/undef in llvm::decomposeBitTestICmp

This change is made to enable conversion of a masked icmp splat vector
containing poison/undef to an equality expression.

llvm::decomposeBitTestICmp Alive2 correctness examples using splat/masking vectors:

    SLT <    https://alive2.llvm.org/ce/z/pPTTHh
    SLE <=   https://alive2.llvm.org/ce/z/qQhAmU
    SGT >    https://alive2.llvm.org/ce/z/koFHzF
    SGE >=   https://alive2.llvm.org/ce/z/3SNz2S
    ULT <u   https://alive2.llvm.org/ce/z/W8ktzQ
    ULE <=u  https://alive2.llvm.org/ce/z/G5SdUY
    UGT >u   https://alive2.llvm.org/ce/z/WFwYxq
    UGE >=u  https://alive2.llvm.org/ce/z/DzJszP

Tests have been verified using Alive2:

    icmp-logical.ll: @nomask_splat_and_B_allones       https://alive2.llvm.org/ce/z/zmJwQU
    icmp-logical.ll: @nomask_splat_and_B_mixed         https://alive2.llvm.org/ce/z/ktzgzd
    signed-truncation-check.ll: @positive_vec_undef0   https://alive2.llvm.org/ce/z/-sTRLD

Differential Revision: https://reviews.llvm.org/D143032

18 months ago[InstCombine][NFC] Add tests with icmp splat vectors and B masks
John McIver [Tue, 11 Apr 2023 07:59:34 +0000 (08:59 +0100)]
[InstCombine][NFC] Add tests with icmp splat vectors and B masks

Add tests to verifying future support for splat vectors containing poison/undef in llvm::decomposeBitTestICmp.

Differential Revision: https://reviews.llvm.org/D143031

18 months ago[Test] Fix tests according to initial intent, add more tests & comments
Max Kazantsev [Tue, 11 Apr 2023 07:28:39 +0000 (14:28 +0700)]
[Test] Fix tests according to initial intent, add more tests & comments

18 months agoReland "[MLIR] Add an assert in Operation::getOpResultImpl for out of range result"
Shivam Gupta [Tue, 11 Apr 2023 06:30:11 +0000 (12:00 +0530)]
Reland "[MLIR] Add an assert in Operation::getOpResultImpl for out of range result"

This reverts commit e08af170736271f022b2cab44d58326356ce1db8.

18 months ago[RISCV] Remove is*Branch instruction flags from C_JR
Job Noorman [Tue, 11 Apr 2023 07:28:18 +0000 (09:28 +0200)]
[RISCV] Remove is*Branch instruction flags from C_JR

As discussed in 1d1b3c49531b, instruction flags set in the *.td files
are under-approximations. For C_JR, isBranch and isConditionalBranch are
set even though it is used for for returns which are not considered
branches.

This patch proposes to remove those flags from C_JR. More detailed
analysis can be implemented in RISCVMCInstrAnalysis.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D147784

18 months ago[AMDGPU] Hide "removing function" diagnostics by default
pvanhout [Thu, 6 Apr 2023 12:07:41 +0000 (14:07 +0200)]
[AMDGPU] Hide "removing function" diagnostics by default

Use an `OptimizationRemark` for them even though it's not really an
optimization. It just integrates better with the other diagnostics
(enabling is easy with `-pass-remark`).

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D147703

18 months ago[NFC] Fix typo in statistic description
Max Kazantsev [Tue, 11 Apr 2023 06:27:48 +0000 (13:27 +0700)]
[NFC] Fix typo in statistic description

18 months ago[LICM][NFC] Restructure code to have one entry point for reassociation-based hoistings
Max Kazantsev [Tue, 11 Apr 2023 06:14:17 +0000 (13:14 +0700)]
[LICM][NFC] Restructure code to have one entry point for reassociation-based hoistings

We already hoist min/max functions and want to do more of this kind. Some
refactoring to make growth points for it.

18 months ago[LICM] Add test showing subtraction hoisting opportunity
Max Kazantsev [Tue, 11 Apr 2023 06:09:41 +0000 (13:09 +0700)]
[LICM] Add test showing subtraction hoisting opportunity

18 months ago[TableGen] Call std::vector::reserve to preallocate memory before a loop of push_back...
Craig Topper [Tue, 11 Apr 2023 07:07:57 +0000 (00:07 -0700)]
[TableGen] Call std::vector::reserve to preallocate memory before a loop of push_back. NFC

18 months ago[clang-tidy] Fix hungarian notation failed to indicate the number of asterisks in...
Douglas Chen [Tue, 11 Apr 2023 06:10:57 +0000 (06:10 +0000)]
[clang-tidy] Fix hungarian notation failed to indicate the number of asterisks in check-clang-extra-clang-tidy-checkers-readability

Fix hungarian notation failed to indicate the number of asterisks for the pointers of multiple word types.

- WRONG: `unsigned char* value`  : `value` --> `ucValue`
- RIGHT: `unsigned cahr* value`  : `value`  --> `pucValue`
- RIGHT: `unsigned char** value` : `value`  --> `ppucValue`

Reviewed By: amurzeau, PiotrZSL

Differential Revision: https://reviews.llvm.org/D147779

18 months ago[NFC] add check for potentially dereferencing null return value
Bing1 Yu [Tue, 11 Apr 2023 06:42:03 +0000 (14:42 +0800)]
[NFC] add check for potentially dereferencing null return value

Reviewed By: pengfei

Differential Revision: https://reviews.llvm.org/D147771

18 months ago[mlir] Make the inliner arg/res handlers more concise.
Tobias Gysi [Tue, 11 Apr 2023 06:16:12 +0000 (06:16 +0000)]
[mlir] Make the inliner arg/res handlers more concise.

The revision ensures the newly introduced argument
and result handlers cannot be used for type conversion.
Instead use the existing materializeCallConversion hook to
perform type conversions.

Reviewed By: Dinistro

Differential Revision: https://reviews.llvm.org/D147605

18 months ago[clang-tidy] Use StringRef::contains (NFC)
Kazu Hirata [Tue, 11 Apr 2023 06:33:47 +0000 (23:33 -0700)]
[clang-tidy] Use StringRef::contains (NFC)

18 months ago[CodeGen][ShrinkWrap] Split restore point
sgokhale [Tue, 11 Apr 2023 06:14:28 +0000 (11:44 +0530)]
[CodeGen][ShrinkWrap] Split restore point

This patch splits a restore point to allow it to only post-dominate blocks reachable by use
or def of CSRs(Callee Saved Registers)/FI(Frame Index).

Benchmarking this on SPEC2017, this gives around 4% improvement on povray and no significant change
for others.

Co-authored-by: junbuml
Differential Revision: https://reviews.llvm.org/D42600

18 months agoFix use-after-free in help message: this cl::opt was binding a StringRef to a tempora...
Mehdi Amini [Tue, 11 Apr 2023 04:50:19 +0000 (22:50 -0600)]
Fix use-after-free in help message: this cl::opt was binding a StringRef to a temporary string

Caught by ASAN on a bot: https://lab.llvm.org/buildbot/#/builders/168/builds/12872/steps/14/logs/stdio

18 months ago[X86][mem-fold] Use x86-registered-target in the tablgen test, NFCI
Shengchen Kan [Tue, 11 Apr 2023 06:06:04 +0000 (14:06 +0800)]
[X86][mem-fold] Use x86-registered-target in the tablgen test, NFCI

18 months ago[TableGen] Avoid vector copy in TreePatter::InlinePatternFragments. NFC
Craig Topper [Tue, 11 Apr 2023 06:01:15 +0000 (23:01 -0700)]
[TableGen] Avoid vector copy in TreePatter::InlinePatternFragments. NFC

Instead of copying a vector and clearing the original, we can swap
with an empty vector.

18 months ago[SCEV][NFC] GetMinTrailingZeros switch case and naming cleanup
Joshua Cao [Tue, 11 Apr 2023 05:39:40 +0000 (22:39 -0700)]
[SCEV][NFC] GetMinTrailingZeros switch case and naming cleanup

* combine zext and sext into the one switch case
* combine vscale and udiv into one switch case
* renames according to LLVM style

18 months ago[Test] Add some more IndVars canonicalization tests
Max Kazantsev [Tue, 11 Apr 2023 05:31:57 +0000 (12:31 +0700)]
[Test] Add some more IndVars canonicalization tests

18 months ago[X86][AMX] Add check for potentially dereferencing null return value
Bing1 Yu [Mon, 10 Apr 2023 09:09:35 +0000 (17:09 +0800)]
[X86][AMX] Add check for potentially dereferencing null return value

Reviewed By: xiangzhangllvm

Differential Revision: https://reviews.llvm.org/D147921

18 months ago[X86][mem-fold] Only run x86-fold-tables.test when target x86 is built
Shengchen Kan [Tue, 11 Apr 2023 04:32:37 +0000 (12:32 +0800)]
[X86][mem-fold] Only run x86-fold-tables.test when target x86 is built

Avoid the LIT fail when only arm/aarch64 is built.

18 months ago[libc] Correctly add new files
Alex Brachet [Tue, 11 Apr 2023 04:41:14 +0000 (04:41 +0000)]
[libc] Correctly add new files

18 months agoReland "[libc] Add {,r}index"
Alex Brachet [Tue, 11 Apr 2023 04:30:50 +0000 (04:30 +0000)]
Reland "[libc] Add {,r}index"

Differential Revision: https://reviews.llvm.org/D147464

18 months ago[ORC] Link `atomic` on platforms without hardware support for atomics.
Owen Shepherd [Tue, 11 Apr 2023 04:11:48 +0000 (04:11 +0000)]
[ORC] Link `atomic` on platforms without hardware support for atomics.

Fixes error about missing reference to __atomic_fetch_add_8 when linking
LLVMOrcJit on ARMv6.

Reviewed By: lhames

Differential Revision: https://reviews.llvm.org/D147937

18 months ago[X86][mem-fold] Speed up test by not re-generating the .inc file
Shengchen Kan [Tue, 11 Apr 2023 02:00:18 +0000 (10:00 +0800)]
[X86][mem-fold] Speed up test by not re-generating the .inc file

Reviewed By: pengfei

Differential Revision: https://reviews.llvm.org/D147835

18 months ago[SCEV] Strengthen huge constant trip multiples.
Joshua Cao [Sun, 9 Apr 2023 01:12:46 +0000 (18:12 -0700)]
[SCEV] Strengthen huge constant trip multiples.

SCEV determines that loops with trip count >=2^32 have a trip multiple
of 1 to guard against huge multiples. This patch stregthens this to
instead find the greatest power of 2 divisor that is less than the
threshold.

Differential Revision: https://reviews.llvm.org/D147868

18 months ago[LoopUnroll] Add script test checks for LoopUnroll/X86/mmx.ll
Joshua Cao [Sun, 9 Apr 2023 01:05:26 +0000 (18:05 -0700)]
[LoopUnroll] Add script test checks for LoopUnroll/X86/mmx.ll

18 months ago[SCEV][NFC] Convert check to assert getSmallConstantTripMultiple()
Joshua Cao [Sun, 9 Apr 2023 00:31:43 +0000 (17:31 -0700)]
[SCEV][NFC] Convert check to assert getSmallConstantTripMultiple()

18 months ago[SCEV] When computing trip count, only zext if necessary
Joshua Cao [Wed, 29 Mar 2023 03:49:39 +0000 (20:49 -0700)]
[SCEV] When computing trip count, only zext if necessary

This patch improves on https://reviews.llvm.org/D110587. To summarize
the patch, given backedge-taken count BC, trip count TC is `BC + 1`.
However, we don't know if BC we might overflow. So the patch modifies TC
computation to `1 + zext(BC)`.

This patch only adds the zext if necessary by looking at the constant
range. If we can determine that BC cannot be the max value for its
bitwidth, then we know adding 1 will not overflow, and the zext is not
needed. We apply loop guards before computing TC to get more data.

The primary motivation is to support my work on more precise trip
multiples in https://reviews.llvm.org/D141823. For example:

```
void test(unsigned n)
  __builtin_assume(n % 6 == 0);
  for (unsigned i = 0; i < n; ++i)
    foo();
```

Prior to this patch, we had `TC = 1 + zext(-1 + 6 * ((6 umax %n) /u
6))<nuw>`. SCEV range computation is able to determine that the BC
cannot be the max value, so the zext is not needed. The result is `TC
-> (6 * ((6 umax %n) /u 6))<nuw>`. From here, we would be able to
determine that %n is a multiple of 6.

There was one change in LoopCacheAnalysis/LoopInterchange required.
Before this patch, if a loop has BC = false, it would compute `TC -> 1 +
zext(false) -> 1`, which was fine. After this patch, it computes `TC -> 1
+ false = true`. CacheAnalysis would then sign extend the `true`, which
was not the intended the behavior. I modified CacheAnalysis such that
it would only zero extend trip counts.

This patch is not NFC, but also does not change any SCEV outputs. I
would like to get this patch out first to make work with trip multiples
easier.

Differential Revision: https://reviews.llvm.org/D147117

18 months ago[Sanitizer][Test] Disable atos test on unknown address for ubsan
Blue Gaston [Mon, 10 Apr 2023 22:53:47 +0000 (15:53 -0700)]
[Sanitizer][Test] Disable atos test on unknown address for ubsan

This test is failing for some cases in CI for ubsan. I suspect because
of the undefined behavior nature of the test, ubsan does not always
try to symbolicate or save the frame for the faulting address.

Specifically is failing on x86 CI. But making this unsupported on
ubsan for now.

rdar://107846128

Differential Revision: https://reviews.llvm.org/D147977

18 months ago[MCJIT] Run ExecutionEngine/MCJIT/remote tests only if threads enabled.
Youngsuk Kim [Tue, 11 Apr 2023 01:41:48 +0000 (01:41 +0000)]
[MCJIT] Run ExecutionEngine/MCJIT/remote tests only if threads enabled.

When LLVM_ENABLE_THREADS=Off, disables tests under
llvm/test/ExecutionEngine/MCJIT/remote/ that require threads.

Reviewed By: lhames

Differential Revision: https://reviews.llvm.org/D147803

18 months ago[mlir][linalg] Replace `getUpperBoundForIndex` implementation
Matthias Springer [Tue, 11 Apr 2023 01:19:19 +0000 (10:19 +0900)]
[mlir][linalg] Replace `getUpperBoundForIndex` implementation

Use `reifyValueBound` instead, which is more general not hard-coded to a specific list supported ops.

Also add a `closedUB` parameter to the ValueBoundsOpInterface API.

Differential Revision: https://reviews.llvm.org/D146356

18 months agoRevert "[libc] Add {,r}index"
Alex Brachet [Tue, 11 Apr 2023 01:21:39 +0000 (01:21 +0000)]
Revert "[libc] Add {,r}index"

This reverts commit a0a141fcbe1dfd35032fa5c052e6906180a37fb1.

18 months ago[Target] Use isNullConstant and isOneConstant (NFC)
Kazu Hirata [Tue, 11 Apr 2023 01:23:07 +0000 (18:23 -0700)]
[Target] Use isNullConstant and isOneConstant (NFC)

18 months agoUse APInt::getOneBitSet (NFC)
Kazu Hirata [Tue, 11 Apr 2023 01:19:17 +0000 (18:19 -0700)]
Use APInt::getOneBitSet (NFC)

18 months ago[lldb-vscode] Fix two issues with runInTerminal test.
Jorge Gorbe Moya [Fri, 7 Apr 2023 20:34:16 +0000 (13:34 -0700)]
[lldb-vscode] Fix two issues with runInTerminal test.

With ptrace_scope = 1 the kernel only allows tracing descendants of a
process. When using runInTerminal, the target process is not launched
by the debugger, so we need to modify LaunchRunInTerminal to explicitly
allow tracing. This should fix a problem reported in
https://reviews.llvm.org/D84974#3903716

In order to allow only the main lldb-vscode process to attach to the
target, this change introduces a new `--debugger-pid` flag that needs
to be passed with `--launch-target` and `--comm-file`.

Also, remove a special case from the launch method in the
lldbvscode_testcase test harness. The existing test was using
stopOnEntry, so the first stop didn't happen at the expected breakpoint
unless the harness did configurationDone first.

Differential Revision: https://reviews.llvm.org/D147805

18 months ago[libc] Add {,r}index
Alex Brachet [Tue, 11 Apr 2023 01:16:21 +0000 (01:16 +0000)]
[libc] Add {,r}index

Differential Revision: https://reviews.llvm.org/D147464

18 months ago[libc] Move str{,r}chr implementation to headers
Alex Brachet [Tue, 11 Apr 2023 01:11:32 +0000 (01:11 +0000)]
[libc] Move str{,r}chr implementation to headers

Differential Revision: https://reviews.llvm.org/D147463

18 months ago[mlir][Interfaces] Better error handling for `addBound`
Matthias Springer [Tue, 11 Apr 2023 00:31:16 +0000 (09:31 +0900)]
[mlir][Interfaces] Better error handling for `addBound`

Do not assert if a bound could not be added. This may or may not cause an error. We have the appropriate error handling in `computeBound` (which returns a `LogicalResult`).

Differential Revision: https://reviews.llvm.org/D147769

18 months agoAdd tracing for pattern application in a ApplyPatternAction
Mehdi Amini [Tue, 11 Apr 2023 00:39:34 +0000 (18:39 -0600)]
Add tracing for pattern application in a ApplyPatternAction

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D144816

18 months ago[Updated commit] Fix Transpose Check in MMA.SYNC Path.
Manish Gupta [Thu, 6 Apr 2023 23:58:17 +0000 (23:58 +0000)]
[Updated commit] Fix Transpose Check in MMA.SYNC Path.

Pushed a stale commit for the same review in my previous commit.
I am updating the main-line with the latest commit including
review commits. Apologies for the redundant commit.

Differential Revision: https://reviews.llvm.org/D147749

18 months agoFix Transpose Check in MMA.SYNC Path
Manish Gupta [Thu, 6 Apr 2023 23:58:17 +0000 (23:58 +0000)]
Fix Transpose Check in MMA.SYNC Path

Differential Revision: https://reviews.llvm.org/D147749

18 months ago[flang][NFC] Move TypeConverter.h header file to include dir
Valentin Clement [Tue, 11 Apr 2023 00:01:10 +0000 (17:01 -0700)]
[flang][NFC] Move TypeConverter.h header file to include dir

After the extraction of the TypeConverter, move the header files
to the include dir so the shared library build is fine.

Reviewed By: PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D147979

18 months ago[clang-tidy][NFC] Remove redundant allOf matcher calls
Nathan James [Mon, 10 Apr 2023 23:38:37 +0000 (00:38 +0100)]
[clang-tidy][NFC] Remove redundant allOf matcher calls

Remove calls to the `allOf` matcher in all matchers that are derived from the `VariadicDynCastAllOfMatcher`.

18 months ago[libc] Add swab implementation
Caslyn Tonelli [Mon, 10 Apr 2023 20:24:58 +0000 (20:24 +0000)]
[libc] Add swab implementation

Swab implementation is added to libc/src/unistd.

Differential Revision: https://reviews.llvm.org/D147970

18 months ago[ifs] Print an error when llvm-ifs is supplied with an unknown arch
Haowei Wu [Wed, 22 Mar 2023 23:41:47 +0000 (16:41 -0700)]
[ifs] Print an error when llvm-ifs is supplied with an unknown arch

This patch makes llvm-ifs print an error when the arch string from
'--arch' flag or the IFS file 'Arch' field is unknown.

Differential Revision: https://reviews.llvm.org/D146672

18 months ago[TableGen] Pass TreePatternNodePtr to InlinePatternFragments by const reference. NFC
Craig Topper [Mon, 10 Apr 2023 20:36:52 +0000 (13:36 -0700)]
[TableGen] Pass TreePatternNodePtr to InlinePatternFragments by const reference. NFC

Not all paths through this function require the reference count
to be incremened. Pass by reference so we don't increase the count
unnecessarily.

18 months ago[flang][openacc] Add missing piece to translate to LLVM IR dialect
Valentin Clement [Mon, 10 Apr 2023 21:29:58 +0000 (14:29 -0700)]
[flang][openacc] Add missing piece to translate to LLVM IR dialect

Add missing pieces to translate handle OpenACC dialect in the translation.

Depends on D147825

Reviewed By: PeteSteinfeld, razvanlupusoru

Differential Revision: https://reviews.llvm.org/D147828

18 months ago[libcxxabi, libunwind] [test] Place output from tests under a 'test' subdir
Martin Storsjö [Wed, 5 Apr 2023 10:56:54 +0000 (13:56 +0300)]
[libcxxabi, libunwind] [test] Place output from tests under a 'test' subdir

Previously, all the output from the tests were placed directly in
the build directory. The tests produce a couple directories named
`__config_{exec,cache,src}__` which are easy to distinguish, and
the output from the individual tests were placed directly in a
directory named `Output`.

This is the same change as
736c6e246f5398331d83edd204a846cc967ad5c6, but for the libcxxabi
and libunwind test suites.

Differential Revision: https://reviews.llvm.org/D147628

18 months ago[mlir][math] Expand math.floorf to truncate, compares and increments
Balaji V. Iyer [Mon, 10 Apr 2023 21:01:26 +0000 (21:01 +0000)]
[mlir][math] Expand math.floorf to truncate, compares and increments

Floorf are pushed directly to libm. This is problematic for
situations where libm is not available. This patch will break down
a floorf function to truncate followed by an increment for negative
values, if necessary.

Reviewed By: rsuderman

Differential Revision: https://reviews.llvm.org/D147966

18 months ago[compiler-rt] [test] Generalize the triple regex for windows XFAILs
Martin Storsjö [Fri, 31 Mar 2023 05:47:59 +0000 (08:47 +0300)]
[compiler-rt] [test] Generalize the triple regex for windows XFAILs

Don't hardcode the vendor field in the triples to "pc"; for mingw
environments the triple is often "<arch>-w64-windows-gnu".

Differential Revision: https://reviews.llvm.org/D147862

18 months ago[compiler-rt] [test] [ubsan] Build .cpp files with %clangxx
Martin Storsjö [Thu, 6 Apr 2023 10:11:46 +0000 (13:11 +0300)]
[compiler-rt] [test] [ubsan] Build .cpp files with %clangxx

This fixes linker errors in mingw configurations, where the ubsan
runtime needs the C++ standard library when instrumenting C++ code.

Differential Revision: https://reviews.llvm.org/D147861

18 months ago[compiler-rt] [test] Use %clangxx for tests that use -x c++
Martin Storsjö [Wed, 5 Apr 2023 21:41:51 +0000 (21:41 +0000)]
[compiler-rt] [test] Use %clangxx for tests that use -x c++

When instrumenting C++ code, ubsan ends up referencing
the ubsan_type_hash_* object files, which require linking against
the C++ ABI library. When building with "clang -x c++", the code
is handled as C++, but the compiler still only links as if it was
C.

Change all cases of "%clang -x c++" into "%clangxx -x c++".

This fixes a lot of ubsan tests in mingw mode.

Differential Revision: https://reviews.llvm.org/D147687

18 months ago[compiler-rt] [builtins] Don't use assembly floatundi*f on x86_64 mingw
Martin Storsjö [Thu, 6 Apr 2023 07:51:35 +0000 (07:51 +0000)]
[compiler-rt] [builtins] Don't use assembly floatundi*f on x86_64 mingw

The x86 assembly is entirely skipped for MSVC build configurations,
since the assembly uses GAS syntax (which MSVC proper can't
assemble, but clang-cl can). But for mingw configurations, the
assembly is used.

On x86_64 Windows, the general calling convention is entirely different
than on other platforms (passing arguments in different registers),
so we can't use this assembly for mingw targets (unless adapted to
handle that calling convention). Thus skip these few assembly routines
for Windows targets. (For i386, we can keep using the assembly
functions.)

This fixes the builtins tests that test these routines. They aren't
used in practice though, as LLVM expands code inline for doing such
conversions anyway.

Differential Revision: https://reviews.llvm.org/D147685

18 months ago[libcxxabi] [test] Mark thread_local_destruction_order.pass.cpp unsupported for mingw...
Martin Storsjö [Mon, 3 Apr 2023 12:52:46 +0000 (15:52 +0300)]
[libcxxabi] [test] Mark thread_local_destruction_order.pass.cpp unsupported for mingw targets

With current versions of mingw-w64, TLS destructors that are registered
while executing TLS destructors are lost and leaked.

The root cause does get fixed further upstream in mingw-w64 in
https://github.com/mingw-w64/mingw-w64/commit/71eddccd746c56d9cde28bb5620d027d49259de9
though, but mark the test as unsupported for now. The marking can be
removed later when the version used in the CI runner has been updated
to include the fix.

Differential Revision: https://reviews.llvm.org/D147859

18 months ago[libunwind] [test] Mark the signal_frame test as unsupported on Windows
Martin Storsjö [Fri, 31 Mar 2023 21:52:05 +0000 (00:52 +0300)]
[libunwind] [test] Mark the signal_frame test as unsupported on Windows

Mark it as unsupported on x86_64, arm and aarch64. On i686, DWARF
is used as the default unwinding format, and there, the CFI
directives are supported.

Differential Revision: https://reviews.llvm.org/D147858

18 months ago[libunwind] [SEH] Handle ExceptionContinueExecution in forced unwinding
Martin Storsjö [Wed, 5 Apr 2023 10:42:22 +0000 (10:42 +0000)]
[libunwind] [SEH] Handle ExceptionContinueExecution in forced unwinding

This fixes the libcxxabi test force_unwind3.pass.cpp when run on native
Windows.

When unwinding past the main thread function into the system functions
that brought up the thread, we can hit functions whose personality
functions return ExceptionContinueExecution (instead of the regular
ExceptionContinueSearch). Interpret this as a signal to stop the
unwind.

Curiously, in this case, it does return ExceptionContinueSearch if
running within a debugger.

Differential Revision: https://reviews.llvm.org/D147739

18 months ago[libunwind] [SEH] Sync LSDA and handler between unw_proc_info_t and DISPATCHER_CONTEXT
Martin Storsjö [Tue, 4 Apr 2023 20:26:20 +0000 (20:26 +0000)]
[libunwind] [SEH] Sync LSDA and handler between unw_proc_info_t and DISPATCHER_CONTEXT

For normal C++ unwinding, we get _dispContext initialized by the
prepopulated DISPATCHER_CONTEXT in _GCC_specific_handler, which
we set with __unw_seh_set_disp_ctx.

When doing force unwinding, we step and populate the unw_proc_info_t
struct _info with getInfoFromSEH, but when we execute the handler
via the __libunwind_seh_personality wrapper function, we execute
the handler set in DISPATCHER_CONTEXT.

Whenever updating these fields in either _info or _dispContext,
sync them to the other one too.

This fixes one aspect of the libcxxabi force_unwind*.pass.cpp tests on
x86_64.

Differential Revision: https://reviews.llvm.org/D147637

18 months ago[libunwind] Increase the external value of _LIBUNWIND_CURSOR_SIZE for SEH/x86_64
Martin Storsjö [Wed, 5 Apr 2023 11:12:24 +0000 (14:12 +0300)]
[libunwind] Increase the external value of _LIBUNWIND_CURSOR_SIZE for SEH/x86_64

For x86_64 Windows targets (that use SEH), _LIBUNWIND_CURSOR_SIZE
is 204; this fixes corruption in test cases that include libunwind.h
without manually defining _LIBUNWIND_IS_NATIVE_ONLY.

If the libunwind.h header is included without defining
_LIBUNWIND_IS_NATIVE_ONLY (like in the libunwind test cases), the
sizes are set to accommodate the maximum possible cursors and
contexts.

(Alternatively, __libunwind_config.h should be changed to default
to native unwinding unless cross unwinding has been requested.
Cross unwinding isn't implemented as far as I know anyway.)

Differential Revision: https://reviews.llvm.org/D147634

18 months ago[lldb][NFC] Update syntax description for language cplusplus demangle
Alex Langford [Sat, 8 Apr 2023 05:50:45 +0000 (22:50 -0700)]
[lldb][NFC] Update syntax description for language cplusplus demangle

Also added some tests because this is completely untested.

rdar://107780577

Differential Revision: https://reviews.llvm.org/D147841

18 months ago[flang][openacc] Add data operands conversion from FIR
Valentin Clement [Mon, 10 Apr 2023 20:32:37 +0000 (13:32 -0700)]
[flang][openacc] Add data operands conversion from FIR

This patch revive an old PR attempt [1] to perform the
data operands conversion needed for translation to LLVMIR.

This is currently not supporting box/class type since they will
normally not reach this pass when the proposed change in this RFC [2]
are implemented.

[1] https://github.com/flang-compiler/f18-llvm-project/pull/915
[2] https://discourse.llvm.org/t/rfc-openacc-dialect-data-operation-improvements/69825/2

Depends on D147824

Reviewed By: PeteSteinfeld, razvanlupusoru

Differential Revision: https://reviews.llvm.org/D147825

18 months ago[LV] Re-use already computed runtime VF in fixFixedOrderRecurrence.
Florian Hahn [Mon, 10 Apr 2023 20:25:11 +0000 (21:25 +0100)]
[LV] Re-use already computed runtime VF in fixFixedOrderRecurrence.

This was suggested as independent cleanup in D147472.

This removes a redundant runtime VF computation when using scalable
vectors.

18 months ago[LV] Turn check into assert in fixFixedOrderRecurrence (NFCI).
Florian Hahn [Mon, 10 Apr 2023 20:11:40 +0000 (21:11 +0100)]
[LV] Turn check into assert in fixFixedOrderRecurrence (NFCI).

Suggested as independent cleanup in D147567. Either VF or UF need to be
> 1. Note that if the condition would be false, the code below would use
a nullptr and crash.

18 months ago[VPlan] Only create extracts for recurrence exits if there are live-outs.
Florian Hahn [Mon, 10 Apr 2023 20:08:33 +0000 (21:08 +0100)]
[VPlan] Only create extracts for recurrence exits if there are live-outs.

Move the code to collect live-out earlier and only generate extracts for
exit values if there are any live-outs that use them.

Depends on D147472.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D147567

18 months agoRevert "[flang][openacc] Add data operands conversion from FIR"
Valentin Clement [Mon, 10 Apr 2023 20:05:37 +0000 (13:05 -0700)]
Revert "[flang][openacc] Add data operands conversion from FIR"

This reverts commit 68bcd647c9c006b707bc9a675a874658cd085d13.

18 months agoRevert "[flang][openacc] Add missing piece to translate to LLVM IR dialect"
Valentin Clement [Mon, 10 Apr 2023 20:05:23 +0000 (13:05 -0700)]
Revert "[flang][openacc] Add missing piece to translate to LLVM IR dialect"

This reverts commit 03289dc7af257684a4278ce4c38b0b07ad749b71.

18 months ago[clang-tidy] Support specifying checks as a list in the config file
Carlos Galvez [Sat, 8 Apr 2023 17:43:34 +0000 (17:43 +0000)]
[clang-tidy] Support specifying checks as a list in the config file

Specifying checks as a string is convenient for quickly using
clang-tidy to run a handful of checks. However it is not
suitable for projects that have a long list of enabled or
disabled checks. It is specially troublesome in case one
wants to interleave comments with the checks, to explain
why they are enabled or disabled.

Currently this can be achieved via multiline strings in YAML,
but it's error-prone. For example, comments must end with a
comma for clang-tidy to continue processing the list of globs;
a missing comma will make clang-tidy silently ignore the rest
of the list.

Instead, enable passing a native YAML list to the "Checks"
option in the config file. The implementation is done such
that the old behavior is kept: a user can pass a string
or a list. We can consider deprecating passing the checks
as a string altogether in a future release, to simplify
the internal logic of the YAML parser.

Fixes https://github.com/llvm/llvm-project/issues/51428

Differential Revision: https://reviews.llvm.org/D147876

18 months ago[mlgo][inl] Interactive mode: optionally tell the default decision
Mircea Trofin [Fri, 7 Apr 2023 17:36:26 +0000 (10:36 -0700)]
[mlgo][inl] Interactive mode: optionally tell the default decision

This helps training algorithms that may want to sometimes replicate the
default decision. The default decision is presented as an extra feature
called `inlining_default`. It's not normally exported to save
computation time.

This is only available in interactive mode.

Differential Revision: https://reviews.llvm.org/D147794

18 months ago[flang][NFC] Fix invalid op result access
Valentin Clement [Mon, 10 Apr 2023 19:19:26 +0000 (12:19 -0700)]
[flang][NFC] Fix invalid op result access

Fix invalid op result access. This will trigger
assertion introduced in D147883.

Reviewed By: frgossen

Differential Revision: https://reviews.llvm.org/D147959

18 months ago[flang][openacc] Add missing piece to translate to LLVM IR dialect
Valentin Clement [Mon, 10 Apr 2023 19:18:37 +0000 (12:18 -0700)]
[flang][openacc] Add missing piece to translate to LLVM IR dialect

Add missing pieces to translate handle OpenACC dialect in the translation.

Depends on D147825

Reviewed By: PeteSteinfeld, razvanlupusoru

Differential Revision: https://reviews.llvm.org/D147828

18 months ago[flang][openacc] Add data operands conversion from FIR
Valentin Clement [Mon, 10 Apr 2023 19:17:42 +0000 (12:17 -0700)]
[flang][openacc] Add data operands conversion from FIR

This patch revive an old PR attempt [1] to perform the
data operands conversion needed for translation to LLVMIR.

This is currently not supporting box/class type since they will
normally not reach this pass when the proposed change in this RFC [2]
are implemented.

[1] https://github.com/flang-compiler/f18-llvm-project/pull/915
[2] https://discourse.llvm.org/t/rfc-openacc-dialect-data-operation-improvements/69825/2

Depends on D147824

Reviewed By: PeteSteinfeld, razvanlupusoru

Differential Revision: https://reviews.llvm.org/D147825

18 months ago[Clang] Fix cast to BigIntType in hasUniqueObjectRepresentations
Roy Jacobson [Mon, 10 Apr 2023 04:26:30 +0000 (07:26 +0300)]
[Clang] Fix cast to BigIntType in hasUniqueObjectRepresentations

A bad QualType cast caused us not to detect _BigInt types if they were wrapped inside sugar types like SubstTemplateTypeParm.
Fix https://github.com/llvm/llvm-project/issues/62019

Reviewed By: cjdb

Differential Revision: https://reviews.llvm.org/D147904

18 months ago[Docs][llvm-exegesis] Add documentation for --use-dummy-perf-counters
Aiden Grossman [Mon, 10 Apr 2023 19:08:27 +0000 (19:08 +0000)]
[Docs][llvm-exegesis] Add documentation for --use-dummy-perf-counters

This patch adds in documentation for the --use-dummy-perf-counters
option (introduced in D146301).

Reviewed By: kpdev42

Differential Revision: https://reviews.llvm.org/D147842

18 months ago[-Wunsafe-buffer-usage] Improve fix-its for local variable declarations with null...
ziqingluo-90 [Mon, 10 Apr 2023 18:54:11 +0000 (11:54 -0700)]
[-Wunsafe-buffer-usage] Improve fix-its for local variable declarations with null pointer initializers

For a local pointer declaration of the form `T * p = 0` or `T * p = std::nullptr`,

Before this patch, we generate fix-its that convert the declaration to
`std::span<T> p{nullptr, <# placeholder #>}`, in cases where `p` is
used in some unsafe operations.  This patch improves the fix-its to
result in a simpler form `std::span<T> p`. It gets rid of the
placeholder and keeps the result concise.

Reviewed by: NoQ (Artem Dergachev)

Differential Revision: https://reviews.llvm.org/D143680

18 months ago[bazel][NFC] Replace @bazel_tools//src/conditions with equivalent @platforms rules
Jordan Rupprecht [Mon, 10 Apr 2023 18:42:58 +0000 (11:42 -0700)]
[bazel][NFC] Replace @bazel_tools//src/conditions with equivalent @platforms rules

Followup to D147354. Using src/conditions is discouraged in favor of using rules from the `@platforms` repository directly.

This replaces three conditions:
* `@bazel_tools//src/conditions:windows` -> `@platforms//os:windows`
* `@bazel_tools//src/conditions:darwin` -> `@platforms//os:macos`
* `@bazel_tools//src/conditions:freebsd` -> `@platforms//os:freebsd`

`llvm/config.bzl` has a non-trivial OS+CPU selection config, so that is omitted from this patch. There is intentionally no equivalent for that in `@platforms` because every project will have their own opinions about what a platform is, and it is not feasible for the bazel selection list to include every possible combination. The recommended idiom there is for projects to define their own supported platforms list, e.g. in a separate BUILD file or platform mapping.

Reviewed By: GMNGeoffrey

Differential Revision: https://reviews.llvm.org/D147948

18 months ago[TableGen] Simplify how commuted variants are generated in GenerateVariantsOf. NFC
Craig Topper [Mon, 10 Apr 2023 18:29:01 +0000 (11:29 -0700)]
[TableGen] Simplify how commuted variants are generated in GenerateVariantsOf. NFC

We don't need to copy the ChildVariants vector into a new vector.
We're using std::move on every entry we copy so they clearly
aren't needed again. We can swap entries in the vector and reuse
it instead.

18 months ago[gn build] Port eb65912e41a1
Nico Weber [Mon, 10 Apr 2023 18:10:59 +0000 (14:10 -0400)]
[gn build] Port eb65912e41a1

18 months agoAMDGPU: Created a subclass for the return address operand in the tail call return...
Changpeng Fang [Mon, 10 Apr 2023 17:53:33 +0000 (10:53 -0700)]
AMDGPU: Created a subclass for the return address operand in the tail call return instruction

Summary:
  This is to avoid using the callee saved registers for the return address
of the tail call return instruction.

Reviewers:
  arsenm, cdevadas

Differential Revision:
  https://reviews.llvm.org/D147096

18 months ago[clang][driver] Pass `-femulated-tls` through to the linker in LTO mode
Paul Kirth [Mon, 13 Feb 2023 18:18:33 +0000 (18:18 +0000)]
[clang][driver] Pass `-femulated-tls` through to the linker in LTO mode

Currently the driver does not propagate the `-f[no-]emulated-tls` flags
to the linker under LTO. This can be surprising when the platform
defaults differ from the flags being passed. A related discussion can be
found in https://reviews.llvm.org/D143619. While the focus there was
RISC-V support, the root cause was that setting `-femualted-tls` and
`-flto` when compiling with Clang resulted in missing symbols because
the platform defaults for Android differed from the flags being passed
to Clang.

This patch changes the Clang driver's behavior to pass the emulated-tls
flags through to the linker when compiling with LTO/ThinLTO.

Reviewed By: phosek, vit9696

Differential Revision: https://reviews.llvm.org/D147834

18 months ago[libc++] Move __errc to __system_error/errc.h
Nikolas Klauser [Sun, 19 Mar 2023 22:10:37 +0000 (23:10 +0100)]
[libc++] Move __errc to __system_error/errc.h

This file was added before we started granularizing the headers, but is essentially just a granularized header. This moves the header to the correct place.

Reviewed By: #libc, EricWF

Spies: libcxx-commits, arichardson, mikhail.ramalho

Differential Revision: https://reviews.llvm.org/D146395

18 months ago[lldb] Implement SymbolFile::GetCompileOptions
Augusto Noronha [Fri, 7 Apr 2023 22:46:33 +0000 (15:46 -0700)]
[lldb] Implement SymbolFile::GetCompileOptions

Implement SymbolFile::GetCompileOptions, which returns a map from
compilation units to compilation arguments associated with that unit.

Differential Revision: https://reviews.llvm.org/D147748

18 months agoFix warnings
Kazu Hirata [Mon, 10 Apr 2023 17:11:41 +0000 (10:11 -0700)]
Fix warnings

This patch fixes:

  mlir/lib/Dialect/Linalg/TransformOps/LinalgTransformOps.cpp:1334:51:
  warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses]

  lld/wasm/Writer.cpp:250:39: warning: suggest parentheses around ‘&&’
  within ‘||’ [-Wparentheses]

18 months ago[libc][obvious] fix new assert typo
Michael Jones [Mon, 10 Apr 2023 17:01:31 +0000 (10:01 -0700)]
[libc][obvious] fix new assert typo

18 months agoAdd support for math.ctlz in convert-math-to-funcs
Jeremy Kun [Mon, 10 Apr 2023 15:57:34 +0000 (08:57 -0700)]
Add support for math.ctlz in convert-math-to-funcs

This change adds a software implementation of the `math.ctlz` operation
and includes it in `--convert-math-to-funcs`.

This is my first change to MLIR, so please bear with me as I'm still learning
the idioms of the codebase.

The context for this change is that I have some larger scale project in which
I'd like to lower from a mix of MLIR dialects to CIRCT, but many of the CIRCT
passes don't support the `math` dialect.

I noticed the content of `convert-math-to-funcs` was limited entirely to
the `pow` functions, but otherwise provided the needed structure to implement
this feature with minimal changes.

Highlight of the changes:

- Add a dependence on the SCF dialect for this lower. I could have lowered
  directly to cf, following the pow lowerings in the same pass, but I felt it
  was not necessary given the existing support for lowering scf to cf.
- Generalize the DenseMap storing op implementations: modify the callback
  function hashmap to be keyed by both OperationType (for me this effectively
  means the name of the op being implemented in software) and the type
  signature of the resulting function.
- Implement the ctlz function as a loop. I had researched a variety of
  implementations that claimed to be more efficient (such as those based on a
  de Bruijn sequence), but it seems to me that the simplest approach would make
  it easier for later compiler optimizations to do a better (platform-aware)
  job optimizing this than I could do by hand.

Questions I had for the reviewer:

- [edit: found mlir-cpu-runner and added two tests] What would I add to the filecheck invocation to actually run the resulting MLIR on a value and assert the output is correct? I have done this manually with the C implementation but I'm not confident my port to MLIR is correct.
- Should I add a test for a vectorized version of this lowering? I followed suit with the ` VecOpToScalarOp` but I admit I don't fully understand what it's doing.

Reviewed By: vzakhari

Differential Revision: https://reviews.llvm.org/D146261

18 months ago[libc][math] Update range reduction step for logf and reduce its latency.
Tue Ly [Fri, 7 Apr 2023 01:45:45 +0000 (21:45 -0400)]
[libc][math] Update range reduction step for logf and reduce its latency.

Simplify the range reduction steps by choosing the reduction constants
carefully so that the reduced arguments v = r*m_x - 1 and v^2 are exact in double
precision, even without FMA instructions, and -2^-8 <= v < 2^-7. This allows the
polynomial evaluations to be parallelized more efficiently.

Reviewed By: santoshn, zimmermann6

Differential Revision: https://reviews.llvm.org/D147755

18 months ago[libc] clean up ctype negative handling
Michael Jones [Fri, 7 Apr 2023 21:02:39 +0000 (14:02 -0700)]
[libc] clean up ctype negative handling

The ctype functions will sometimes be passed negative numbers, such as
EOF. Some of the previous implementations didn't handle these properly.
Additionally, the tests did not check any negative numbers. These
problems have been fixed.

This patch fixes https://github.com/llvm/llvm-project/issues/62000

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D147813

18 months agoFix wording in a release note; NFC
Aaron Ballman [Mon, 10 Apr 2023 16:53:50 +0000 (12:53 -0400)]
Fix wording in a release note; NFC

This change happened due to post-commit feedback on the review.

18 months agoFix invalid op result access in SparseTensorCodegen
Frederik Gossen [Mon, 10 Apr 2023 16:30:27 +0000 (12:30 -0400)]
Fix invalid op result access in SparseTensorCodegen

This trigges an assertion introduced in https://reviews.llvm.org/D147883

Differential Revision: https://reviews.llvm.org/D147950

18 months ago[AMDGPU] Fix AddedComplexity for s_buffer_load patterns. NFCI.
Jay Foad [Mon, 6 Mar 2023 16:33:49 +0000 (16:33 +0000)]
[AMDGPU] Fix AddedComplexity for s_buffer_load patterns. NFCI.

We set AddedComplexity = 100 for s_load patterns to prefer them over
global loads, but for s_buffer_load patterns there is no need to do
this and it was quietly overriding the AddedComplexity of each
individual GCNPat that is defined inside SMLoad_Pattern (but in practice
that did not appear to make any difference).

Differential Revision: https://reviews.llvm.org/D145396

18 months agoChange dyn_cast to cast
Bing1 Yu [Mon, 10 Apr 2023 16:14:04 +0000 (00:14 +0800)]
Change dyn_cast to cast

Reviewed By: pengfei

Differential Revision: https://reviews.llvm.org/D147923

18 months ago[mlir][tosa] Lowering of tosa.gather operations with dynamic dimensions
Spenser Bauman [Mon, 10 Apr 2023 15:55:54 +0000 (15:55 +0000)]
[mlir][tosa] Lowering of tosa.gather operations with dynamic dimensions

The existing TOSA->Linalg lowering of tosa.gather only supports gathers
with either a static shape or a single dynamic batch dimension.
This change extends support to arbitrary number of dynamic dimensions on
both the values and indices of the gather operation.

Reviewed By: rsuderman

Differential Revision: https://reviews.llvm.org/D147810

18 months ago[flang][NFC] Extract TypeConverter from header file
Valentin Clement [Mon, 10 Apr 2023 15:33:52 +0000 (08:33 -0700)]
[flang][NFC] Extract TypeConverter from header file

Extract the type converter definitions into its own .cpp
file so the type converter can be used by passes.

Reviewed By: PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D147824

18 months ago[Clang] Check type-constraints applied to placeholder types
Corentin Jabot [Mon, 10 Apr 2023 09:52:30 +0000 (11:52 +0200)]
[Clang] Check type-constraints applied to placeholder types

(and deduced return types)

Previously, only type constraints applied to type parameter
were semantically checked.

A diagnostic would still be emitted on instantiation, but it was
too late, lacked clarity, and was inconsistent with type parameters.

Reviewed By: erichkeane

Differential Revision: https://reviews.llvm.org/D147925

18 months ago[asan][test] Fix two test cases on Windows
Alvin Wong [Sun, 2 Apr 2023 18:26:30 +0000 (02:26 +0800)]
[asan][test] Fix two test cases on Windows

Fixes global-location-nodebug and heavy_uar_test for both MSVC and MinGW
targets.

Differential Revision: https://reviews.llvm.org/D147445

18 months ago[sanitizer][win] Fix `Atexit()` on MinGW asan_dynamic runtime
Alvin Wong [Sun, 2 Apr 2023 15:19:23 +0000 (23:19 +0800)]
[sanitizer][win] Fix `Atexit()` on MinGW asan_dynamic runtime

Some functions of asan depends on `Atexit()` handlers. On Windows, this
is implemented in ad3ec82bb1c7217b0187a1e16bb22642e194ce94 to queue the
handlers in a vector then register them with `atexit()` only after the
CRT is fully initialized. However, this is broken on MinGW with
asan_dynamic runtime due to different initialization order. This change
fixes the issue by making sure that `Atexit()` can call `atexit()`
directly past the pre-initialization phase.

This fixes two asan test cases on MinGW.

Differential Revision: https://reviews.llvm.org/D147413

18 months ago[clang-tidy] Added IgnoreVirtual option to misc-unused-parameters
Piotr Zegar [Mon, 10 Apr 2023 14:41:32 +0000 (14:41 +0000)]
[clang-tidy] Added IgnoreVirtual option to misc-unused-parameters

Added option to ignore virtual methods in this check.
This allows to quickly get rid of big number of
potentialy false-positive issues without inserting
not-needed comments.

Fixes #55665.

Reviewed By: njames93

Differential Revision: https://reviews.llvm.org/D147918