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Pull down from intel branch #19

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wants to merge 2,769 commits into from
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Pull down from intel branch #19

wants to merge 2,769 commits into from

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vladimirlaz
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Pull down changes done in base project.

rupprecht and others added 30 commits January 31, 2019 16:45
Summary:
Include the symbol being defined in the list of requirements for using --localize-symbol.

This is used, for example, when someone is depending on two different projects that have the same (or close enough) method defined in each library, and using "-L sym" for a conflicting symbol in one of the libraries so that the definition from the other one is used. However, the library may have internal references to the symbol, which cause program crashes when those are used, i.e.:

```
$ cat foo.c
int foo() { return 5; }
$ cat bar.c
int foo();
int bar() { return 2 * foo(); }
$ cat foo2.c
int foo() { /* Safer implementation */ return 42; }
$ cat main.c
int bar();
int main() {
  __builtin_printf("bar = %d\n", bar());
  return 0;
}
$ ar rcs libfoo.a foo.o bar.o
$ ar rcs libfoo2.a foo2.o
# Picks the wrong foo() impl
$ clang main.o -lfoo -lfoo2 -L. -o main
# Picks the right foo() impl
$ objcopy -L foo libfoo.a && clang main.o -lfoo -lfoo2 -L. -o main
# Links somehow, but crashes at runtime
$ llvm-objcopy -L foo libfoo.a && clang main.o -lfoo -lfoo2 -L. -o main
```

Reviewers: jhenderson, alexshap, jakehehrlich, espindola

Subscribers: emaste, arichardson

Differential Revision: https://reviews.llvm.org/D57417

llvm-svn: 352767
…DAT leader"

This reverts commit r352763.

Causing a couple bot failures, root cause pointed to by sanitizer bot:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/28909/steps/annotate/logs/stdio

Use after free. I understand the issue but will revert and test with fix
before recommitting.

llvm-svn: 352768
…crement-by-one

Missed some regression test updates when testing this.

llvm-svn: 352769
…OMDAT leader"

Recommit of r352763 with fix for use after free.

llvm-svn: 352770
Reviewers: chandlerc

Reviewed By: chandlerc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D57494

llvm-svn: 352771
Summary:
The method find_matching_slice(self) uses uuid_str on one of the paths but the variable does not exist and so this results in a NameError exception if we take that path.

Differential Revision: https://reviews.llvm.org/D57467

llvm-svn: 352772
…sert_subvector(v,s,c2))

Similar to what we already do in DAGCombiner, but this version also handles bitcasts from types with different scalar sizes, which x86 is better at handling.

Differential Revision: https://reviews.llvm.org/D57514

llvm-svn: 352773
The original commit of this function (r129800 in 2011) had a typo where
part of the "Micro" version check was actually comparing against the "Minor"
version number.

llvm-svn: 352776
…lements

This avoids hitting the assert added in r352636 in a future commit.

llvm-svn: 352777
This ensures that if we make it to the backend w/o lowering widenable_conditions first, that we generate correct code. Doing it in CGP - instead of isel - let's us fold control flow before hitting block local instruction selection.

Differential Revision: https://reviews.llvm.org/D57473

llvm-svn: 352779
The test was using ASSERT_EQ instead of ASSERT_STREQ which meant we were
comparing string addresses instead of the actual string. This caused the
test to fail with with the sanitizers enabled.

llvm-svn: 352780
…ng test. Reviewed as https://reviews.llvm.org/D57391 Thanks to Andrey Maksimov for the patch

llvm-svn: 352781
This is causing a failure in chromium

llvm-svn: 352782
…r arguments

r zero scale SMULFIX, expand into MUL which produces better code for X86.

For vector arguments, expand into MUL if SMULFIX is provided with a zero scale.
Otherwise, expand into MULH[US] or [US]MUL_LOHI.

Differential Revision: https://reviews.llvm.org/D56987

llvm-svn: 352783
While dangling nodes will eventually be pruned when they are
considered, leaving them disables combines requiring single-use.

Reviewers: Carrot, spatel, craig.topper, RKSimon, efriedma

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D57520

llvm-svn: 352784
… symbol.

Summary:
Previously, llvm-nm would report symbols for .debug and .note sections as: '?' with an empty  section name:

```
00000000 ?
00000000 ?
...
```

With this patch the output more closely resembles GNU nm:
```
00000000 N .debug_abbrev
00000000 n .note.GNU-stack
...
```

This patch calls `getSectionName` for sections that belong to symbols of type `ELF::STT_SECTION`, which returns the name of the section from the section string table.

Reviewers: Bigcheese, davide, jhenderson

Reviewed By: davide, jhenderson

Subscribers: rupprecht, jhenderson, llvm-commits

Differential Revision: https://reviews.llvm.org/D57105

llvm-svn: 352785
Summary:
Like with X86, this allows better DAG-level alias analysis and
alignment inference for wrapped addresses.

Reviewers: jonpa, uweigand

Reviewed By: uweigand

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D57407

llvm-svn: 352786
Summary:
EarlyCSE needs to optimize MemoryPhis after an access is removed and has
special handling for it. This should be handled by MemorySSA instead.
The default remains that MemoryPhis are *not* optimized after an access
is removed.

Reviewers: george.burgess.iv

Subscribers: sanjoy, jlebar, llvm-commits, Prazek

Differential Revision: https://reviews.llvm.org/D57199

llvm-svn: 352787
Preferred types are used by code completion for ranking. This commit
considerably increases the number of points in code where those types
are propagated.

In order to avoid complicating signatures of Parser's methods, a
preferred type is kept as a member variable in the parser and updated
during parsing.

Differential revision: https://reviews.llvm.org/D56723

llvm-svn: 352788
Summary:
Use RawPrint instead of Printf for instrumentation warning because
Printf doesn't work on Win when instrumentation is being
initialized (since OutputFile is not yet initialized).

Reviewers: kcc

Reviewed By: kcc

Differential Revision: https://reviews.llvm.org/D57531

llvm-svn: 352789
CMake 3.6 introduced CMAKE_TRY_COMPILE_PLATFORM_VARIABLES, which solves
precisely the problem that necessitated init_user_prop, so we can switch
over whenever we bump our minimum CMake requirement.

llvm-svn: 352790
The FunctionCallee type is effectively a {FunctionType*,Value*} pair,
and is a useful convenience to enable code to continue passing the
result of getOrInsertFunction() through to EmitCall, even once pointer
types lose their pointee-type.

Then:
- update the CallInst/InvokeInst instruction creation functions to
  take a Callee,
- modify getOrInsertFunction to return FunctionCallee, and
- update all callers appropriately.

One area of particular note is the change to the sanitizer
code. Previously, they had been casting the result of
`getOrInsertFunction` to a `Function*` via
`checkSanitizerInterfaceFunction`, and storing that. That would report
an error if someone had already inserted a function declaraction with
a mismatching signature.

However, in general, LLVM allows for such mismatches, as
`getOrInsertFunction` will automatically insert a bitcast if
needed. As part of this cleanup, cause the sanitizer code to do the
same. (It will call its functions using the expected signature,
however they may have been declared.)

Finally, in a small number of locations, callers of
`getOrInsertFunction` actually were expecting/requiring that a brand
new function was being created. In such cases, I've switched them to
Function::Create instead.

Differential Revision: https://reviews.llvm.org/D57315

llvm-svn: 352791
This patch fixes pr39098.

For the attached test case, CombineZExtLogicopShiftLoad can optimize it to

t25: i64 = Constant<1099511627775>
t35: i64 = Constant<0>
  t0: ch = EntryToken
t57: i64,ch = load<(load 4 from `i40* undef`, align 8), zext from i32> t0, undef:i64, undef:i64
    t58: i64 = srl t57, Constant:i8<1>
  t60: i64 = and t58, Constant:i64<524287>
t29: ch = store<(store 5 into `i40* undef`, align 8), trunc to i40> t57:1, t60, undef:i64, undef:i64

But later visitANDLike transforms it to

t25: i64 = Constant<1099511627775>
t35: i64 = Constant<0>
  t0: ch = EntryToken
t57: i64,ch = load<(load 4 from `i40* undef`, align 8), zext from i32> t0, undef:i64, undef:i64
      t61: i32 = truncate t57
    t63: i32 = srl t61, Constant:i8<1>
  t64: i32 = and t63, Constant:i32<524287>
t65: i64 = zero_extend t64
    t58: i64 = srl t57, Constant:i8<1>
  t60: i64 = and t58, Constant:i64<524287>
t29: ch = store<(store 5 into `i40* undef`, align 8), trunc to i40> t57:1, t60, undef:i64, undef:i64

And it triggers CombineZExtLogicopShiftLoad again, causes a dead loop.

Both forms should generate same instructions, CombineZExtLogicopShiftLoad generated IR looks cleaner. But it looks more difficult to prevent visitANDLike to do the transform, so I prevent CombineZExtLogicopShiftLoad to do the transform if the ZExt is free.

Differential Revision: https://reviews.llvm.org/D57491

llvm-svn: 352792
Summary: Also clean up some preexisting target feature code.

Reviewers: aheejin

Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, jfb

Differential Revision: https://reviews.llvm.org/D57495

llvm-svn: 352793
Summary: Moving special handling to MemorySSAUpdater in D57199.

Reviewers: gberry, george.burgess.iv

Subscribers: sanjoy, jlebar, Prazek, llvm-commits

Differential Revision: https://reviews.llvm.org/D57200

llvm-svn: 352794
Reviewers: sammccall

Reviewed By: sammccall

Subscribers: llvm-commits, mgorny, ioeric, MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D56611

llvm-svn: 352796
Also switch to Apache-2.0 With LLVM-exception license.

Signed-off-by: Vladimir Lazarev <[email protected]>
@vladimirlaz
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Pull down brings merge conflicts which need to be resolved in separate commits.

bb-sycl pushed a commit that referenced this pull request Apr 8, 2019
The assertion prevents it from applying fixes when used along with compilation
databases with relative paths. Added a test that demonstrates the assertion
failure.

An example of the assertion:
input.cpp:11:14: error: expected ';' after top level declarator
typedef int T
             ^
             ;
input.cpp:11:14: note: FIX-IT applied suggested code changes
clang-check: clang/tools/clang-check/ClangCheck.cpp:94: virtual std::string (anonymous namespace)::FixItOptions::RewriteFilename(const std::string &, int &): Assertion `llvm::sys::path::is_absolute(filename) && "clang-fixit expects absolute paths only."' failed.
  #0 llvm::sys::PrintStackTrace(llvm::raw_ostream&) llvm/lib/Support/Unix/Signals.inc:494:13
  #1 llvm::sys::RunSignalHandlers() llvm/lib/Support/Signals.cpp:69:18
  #2 SignalHandler(int) llvm/lib/Support/Unix/Signals.inc:357:1
  #3 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x110c0)
  #4 raise (/lib/x86_64-linux-gnu/libc.so.6+0x32fcf)
  #5 abort (/lib/x86_64-linux-gnu/libc.so.6+0x343fa)
  #6 (/lib/x86_64-linux-gnu/libc.so.6+0x2be37)
  #7 (/lib/x86_64-linux-gnu/libc.so.6+0x2bee2)
  #8 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*, std::forward_iterator_tag)
  #9 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct_aux<char*>(char*, char*, std::__false_type)
 #10 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*)
 #11 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
 #12 (anonymous namespace)::FixItOptions::RewriteFilename(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int&) clang/tools/clang-check/ClangCheck.cpp:101:0
 #13 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_data() const
 #14 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_is_local() const
 #15 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_dispose()
 #16 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()
 #17 clang::FixItRewriter::WriteFixedFiles(std::vector<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >*) clang/lib/Frontend/Rewrite/FixItRewriter.cpp:98:0
 #18 std::__shared_ptr<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2>::get() const
 #19 std::__shared_ptr_access<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2, false, false>::_M_get() const
 #20 std::__shared_ptr_access<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2, false, false>::operator->() const
 #21 clang::CompilerInstance::getFrontendOpts() clang/include/clang/Frontend/CompilerInstance.h:290:0
 #22 clang::FrontendAction::EndSourceFile() clang/lib/Frontend/FrontendAction.cpp:966:0
 #23 __gnu_cxx::__normal_iterator<clang::FrontendInputFile*, std::vector<clang::FrontendInputFile, std::allocator<clang::FrontendInputFile> > >::operator++()
 #24 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) clang/lib/Frontend/CompilerInstance.cpp:943:0
 #25 clang::tooling::FrontendActionFactory::runInvocation(std::shared_ptr<clang::CompilerInvocation>, clang::FileManager*, std::shared_ptr<clang::PCHContainerOperations>, clang::DiagnosticConsumer*) clang/lib/Tooling/Tooling.cpp:369:33
 #26 clang::tooling::ToolInvocation::runInvocation(char const*, clang::driver::Compilation*, std::shared_ptr<clang::CompilerInvocation>, std::shared_ptr<clang::PCHContainerOperations>) clang/lib/Tooling/Tooling.cpp:344:18
 #27 clang::tooling::ToolInvocation::run() clang/lib/Tooling/Tooling.cpp:329:10
 #28 clang::tooling::ClangTool::run(clang::tooling::ToolAction*) clang/lib/Tooling/Tooling.cpp:518:11
 #29 main clang/tools/clang-check/ClangCheck.cpp:187:15

llvm-svn: 357915
bb-sycl pushed a commit that referenced this pull request Apr 8, 2019
…heck.

The assertion prevents it from applying fixes when used along with compilation
databases with relative paths. Added a test that demonstrates the assertion
failure.

An example of the assertion:
input.cpp:11:14: error: expected ';' after top level declarator
typedef int T
             ^
             ;
input.cpp:11:14: note: FIX-IT applied suggested code changes
clang-check: clang/tools/clang-check/ClangCheck.cpp:94: virtual std::string (anonymous namespace)::FixItOptions::RewriteFilename(const std::string &, int &): Assertion `llvm::sys::path::is_absolute(filename) && "clang-fixit expects absolute paths only."' failed.
  #0 llvm::sys::PrintStackTrace(llvm::raw_ostream&) llvm/lib/Support/Unix/Signals.inc:494:13
  #1 llvm::sys::RunSignalHandlers() llvm/lib/Support/Signals.cpp:69:18
  #2 SignalHandler(int) llvm/lib/Support/Unix/Signals.inc:357:1
  #3 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x110c0)
  #4 raise (/lib/x86_64-linux-gnu/libc.so.6+0x32fcf)
  #5 abort (/lib/x86_64-linux-gnu/libc.so.6+0x343fa)
  #6 (/lib/x86_64-linux-gnu/libc.so.6+0x2be37)
  #7 (/lib/x86_64-linux-gnu/libc.so.6+0x2bee2)
  #8 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*, std::forward_iterator_tag)
  #9 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct_aux<char*>(char*, char*, std::__false_type)
 #10 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*)
 #11 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
 #12 (anonymous namespace)::FixItOptions::RewriteFilename(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int&) clang/tools/clang-check/ClangCheck.cpp:101:0
 #13 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_data() const
 #14 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_is_local() const
 #15 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_dispose()
 #16 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()
 #17 clang::FixItRewriter::WriteFixedFiles(std::vector<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >*) clang/lib/Frontend/Rewrite/FixItRewriter.cpp:98:0
 #18 std::__shared_ptr<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2>::get() const
 #19 std::__shared_ptr_access<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2, false, false>::_M_get() const
 #20 std::__shared_ptr_access<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2, false, false>::operator->() const
 #21 clang::CompilerInstance::getFrontendOpts() clang/include/clang/Frontend/CompilerInstance.h:290:0
 #22 clang::FrontendAction::EndSourceFile() clang/lib/Frontend/FrontendAction.cpp:966:0
 #23 __gnu_cxx::__normal_iterator<clang::FrontendInputFile*, std::vector<clang::FrontendInputFile, std::allocator<clang::FrontendInputFile> > >::operator++()
 #24 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) clang/lib/Frontend/CompilerInstance.cpp:943:0
 #25 clang::tooling::FrontendActionFactory::runInvocation(std::shared_ptr<clang::CompilerInvocation>, clang::FileManager*, std::shared_ptr<clang::PCHContainerOperations>, clang::DiagnosticConsumer*) clang/lib/Tooling/Tooling.cpp:369:33
 #26 clang::tooling::ToolInvocation::runInvocation(char const*, clang::driver::Compilation*, std::shared_ptr<clang::CompilerInvocation>, std::shared_ptr<clang::PCHContainerOperations>) clang/lib/Tooling/Tooling.cpp:344:18
 #27 clang::tooling::ToolInvocation::run() clang/lib/Tooling/Tooling.cpp:329:10
 #28 clang::tooling::ClangTool::run(clang::tooling::ToolAction*) clang/lib/Tooling/Tooling.cpp:518:11
 #29 main clang/tools/clang-check/ClangCheck.cpp:187:15
........
Breaks windows buildbots

llvm-svn: 357918
bb-sycl pushed a commit that referenced this pull request Apr 8, 2019
Re-commit r357915 with a fix for windows.

The assertion prevents it from applying fixes when used along with compilation
databases with relative paths. Added a test that demonstrates the assertion
failure.

An example of the assertion:
input.cpp:11:14: error: expected ';' after top level declarator
typedef int T
             ^
             ;
input.cpp:11:14: note: FIX-IT applied suggested code changes
clang-check: clang/tools/clang-check/ClangCheck.cpp:94: virtual std::string (anonymous namespace)::FixItOptions::RewriteFilename(const std::string &, int &): Assertion `llvm::sys::path::is_absolute(filename) && "clang-fixit expects absolute paths only."' failed.
  #0 llvm::sys::PrintStackTrace(llvm::raw_ostream&) llvm/lib/Support/Unix/Signals.inc:494:13
  #1 llvm::sys::RunSignalHandlers() llvm/lib/Support/Signals.cpp:69:18
  #2 SignalHandler(int) llvm/lib/Support/Unix/Signals.inc:357:1
  #3 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x110c0)
  #4 raise (/lib/x86_64-linux-gnu/libc.so.6+0x32fcf)
  #5 abort (/lib/x86_64-linux-gnu/libc.so.6+0x343fa)
  #6 (/lib/x86_64-linux-gnu/libc.so.6+0x2be37)
  #7 (/lib/x86_64-linux-gnu/libc.so.6+0x2bee2)
  #8 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*, std::forward_iterator_tag)
  #9 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct_aux<char*>(char*, char*, std::__false_type)
 #10 void std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct<char*>(char*, char*)
 #11 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
 #12 (anonymous namespace)::FixItOptions::RewriteFilename(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int&) clang/tools/clang-check/ClangCheck.cpp:101:0
 #13 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_data() const
 #14 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_is_local() const
 #15 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_dispose()
 #16 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()
 #17 clang::FixItRewriter::WriteFixedFiles(std::vector<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >*) clang/lib/Frontend/Rewrite/FixItRewriter.cpp:98:0
 #18 std::__shared_ptr<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2>::get() const
 #19 std::__shared_ptr_access<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2, false, false>::_M_get() const
 #20 std::__shared_ptr_access<clang::CompilerInvocation, (__gnu_cxx::_Lock_policy)2, false, false>::operator->() const
 #21 clang::CompilerInstance::getFrontendOpts() clang/include/clang/Frontend/CompilerInstance.h:290:0
 #22 clang::FrontendAction::EndSourceFile() clang/lib/Frontend/FrontendAction.cpp:966:0
 #23 __gnu_cxx::__normal_iterator<clang::FrontendInputFile*, std::vector<clang::FrontendInputFile, std::allocator<clang::FrontendInputFile> > >::operator++()
 #24 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) clang/lib/Frontend/CompilerInstance.cpp:943:0
 #25 clang::tooling::FrontendActionFactory::runInvocation(std::shared_ptr<clang::CompilerInvocation>, clang::FileManager*, std::shared_ptr<clang::PCHContainerOperations>, clang::DiagnosticConsumer*) clang/lib/Tooling/Tooling.cpp:369:33
 #26 clang::tooling::ToolInvocation::runInvocation(char const*, clang::driver::Compilation*, std::shared_ptr<clang::CompilerInvocation>, std::shared_ptr<clang::PCHContainerOperations>) clang/lib/Tooling/Tooling.cpp:344:18
 #27 clang::tooling::ToolInvocation::run() clang/lib/Tooling/Tooling.cpp:329:10
 #28 clang::tooling::ClangTool::run(clang::tooling::ToolAction*) clang/lib/Tooling/Tooling.cpp:518:11
 #29 main clang/tools/clang-check/ClangCheck.cpp:187:15

llvm-svn: 357921
bb-sycl pushed a commit that referenced this pull request Jan 23, 2020
This reverts commit e57a9ab.

Parser/cxx2a-placeholder-type-constraint.cpp has MSan failures.

Present at 7b81c3f:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap-msan/builds/17133/steps/check-clang%20msan/logs/stdio
not present at eaa594f:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap-msan/builds/17132/steps/check-clang%20msan/logs/stdio

Stack trace:
```
==57032==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0xccfe016 in clang::AutoTypeLoc::getLocalSourceRange() const /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/include/clang/AST/TypeLoc.h:2036:19
    #1 0xcc56758 in CheckDeducedPlaceholderConstraints(clang::Sema&, clang::AutoType const&, clang::AutoTypeLoc, clang::QualType) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Sema/SemaTemplateDeduction.cpp:4505:56
    #2 0xcc550ce in clang::Sema::DeduceAutoType(clang::TypeLoc, clang::Expr*&, clang::QualType&, llvm::Optional<unsigned int>, bool) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Sema/SemaTemplateDeduction.cpp:4707:11
    #3 0xcc52407 in clang::Sema::DeduceAutoType(clang::TypeSourceInfo*, clang::Expr*&, clang::QualType&, llvm::Optional<unsigned int>, bool) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Sema/SemaTemplateDeduction.cpp:4457:10
    #4 0xba38332 in clang::Sema::deduceVarTypeFromInitializer(clang::VarDecl*, clang::DeclarationName, clang::QualType, clang::TypeSourceInfo*, clang::SourceRange, bool, clang::Expr*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Sema/SemaDecl.cpp:11351:7
    #5 0xba3a8a9 in clang::Sema::DeduceVariableDeclarationType(clang::VarDecl*, bool, clang::Expr*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Sema/SemaDecl.cpp:11385:26
    #6 0xba3c520 in clang::Sema::AddInitializerToDecl(clang::Decl*, clang::Expr*, bool) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Sema/SemaDecl.cpp:11725:9
    #7 0xb39c498 in clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseDecl.cpp:2399:17
    #8 0xb394d80 in clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseDecl.cpp:2128:21
    #9 0xb383bbf in clang::Parser::ParseSimpleDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&, bool, clang::Parser::ForRangeInit*, clang::SourceLocation*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseDecl.cpp:1848:10
    #10 0xb383129 in clang::Parser::ParseDeclaration(clang::DeclaratorContext, clang::SourceLocation&, clang::Parser::ParsedAttributesWithRange&, clang::SourceLocation*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/llvm/include/llvm/ADT/PointerUnion.h
    #11 0xb53a388 in clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::Parser::ParsedAttributesWithRange&) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:221:13
    #12 0xb539309 in clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 32u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:106:20
    #13 0xb55610e in clang::Parser::ParseCompoundStatementBody(bool) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:1079:11
    #14 0xb559529 in clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseStmt.cpp:2204:21
    #15 0xb33c13e in clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/Parser.cpp:1339:10
    #16 0xb394703 in clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseDecl.cpp:2068:11
    #17 0xb338e52 in clang::Parser::ParseDeclOrFunctionDefInternal(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/Parser.cpp:1099:10
    #18 0xb337674 in clang::Parser::ParseDeclarationOrFunctionDefinition(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/Parser.cpp:1115:12
    #19 0xb334a96 in clang::Parser::ParseExternalDeclaration(clang::Parser::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/Parser.cpp:935:12
    #20 0xb32f12a in clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/Parser.cpp:686:12
    #21 0xb31e193 in clang::ParseAST(clang::Sema&, bool, bool) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Parse/ParseAST.cpp:158:20
    #22 0x80263f0 in clang::FrontendAction::Execute() /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Frontend/FrontendAction.cpp:936:8
    #23 0x7f2a257 in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:965:33
    #24 0x8288bef in clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:290:25
    #25 0xad44c2 in cc1_main(llvm::ArrayRef<char const*>, char const*, void*) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/tools/driver/cc1_main.cpp:239:15
    #26 0xacd76a in ExecuteCC1Tool(llvm::ArrayRef<char const*>) /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/tools/driver/driver.cpp:325:12
    #27 0xacc9fd in main /b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm-project/clang/tools/driver/driver.cpp:398:12
    #28 0x7f7d82cdb2e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)
    #29 0xa4dde9 in _start (/b/sanitizer-x86_64-linux-bootstrap-msan/build/llvm_build_msan/bin/clang-11+0xa4dde9)
```
bb-sycl pushed a commit that referenced this pull request Aug 22, 2020
When `Target::GetEntryPointAddress()` calls `exe_module->GetObjectFile()->GetEntryPointAddress()`, and the returned
`entry_addr` is valid, it can immediately be returned.

However, just before that, an `llvm::Error` value has been setup, but in this case it is not consumed before returning, like is done further below in the function.

In https://bugs.freebsd.org/248745 we got a bug report for this, where a very simple test case aborts and dumps core:

```
* thread #1, name = 'testcase', stop reason = breakpoint 1.1
    frame #0: 0x00000000002018d4 testcase`main(argc=1, argv=0x00007fffffffea18) at testcase.c:3:5
   1	int main(int argc, char *argv[])
   2	{
-> 3	    return 0;
   4	}
(lldb) p argc
Program aborted due to an unhandled Error:
Error value was Success. (Note: Success values must still be checked prior to being destroyed).

Thread 1 received signal SIGABRT, Aborted.
thr_kill () at thr_kill.S:3
3	thr_kill.S: No such file or directory.
(gdb) bt
#0  thr_kill () at thr_kill.S:3
#1  0x00000008049a0004 in __raise (s=6) at /usr/src/lib/libc/gen/raise.c:52
#2  0x0000000804916229 in abort () at /usr/src/lib/libc/stdlib/abort.c:67
#3  0x000000000451b5f5 in fatalUncheckedError () at /usr/src/contrib/llvm-project/llvm/lib/Support/Error.cpp:112
#4  0x00000000019cf008 in GetEntryPointAddress () at /usr/src/contrib/llvm-project/llvm/include/llvm/Support/Error.h:267
#5  0x0000000001bccbd8 in ConstructorSetup () at /usr/src/contrib/llvm-project/lldb/source/Target/ThreadPlanCallFunction.cpp:67
#6  0x0000000001bcd2c0 in ThreadPlanCallFunction () at /usr/src/contrib/llvm-project/lldb/source/Target/ThreadPlanCallFunction.cpp:114
#7  0x00000000020076d4 in InferiorCallMmap () at /usr/src/contrib/llvm-project/lldb/source/Plugins/Process/Utility/InferiorCallPOSIX.cpp:97
#8  0x0000000001f4be33 in DoAllocateMemory () at /usr/src/contrib/llvm-project/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp:604
#9  0x0000000001fe51b9 in AllocatePage () at /usr/src/contrib/llvm-project/lldb/source/Target/Memory.cpp:347
#10 0x0000000001fe5385 in AllocateMemory () at /usr/src/contrib/llvm-project/lldb/source/Target/Memory.cpp:383
#11 0x0000000001974da2 in AllocateMemory () at /usr/src/contrib/llvm-project/lldb/source/Target/Process.cpp:2301
#12 CanJIT () at /usr/src/contrib/llvm-project/lldb/source/Target/Process.cpp:2331
#13 0x0000000001a1bf3d in Evaluate () at /usr/src/contrib/llvm-project/lldb/source/Expression/UserExpression.cpp:190
#14 0x00000000019ce7a2 in EvaluateExpression () at /usr/src/contrib/llvm-project/lldb/source/Target/Target.cpp:2372
#15 0x0000000001ad784c in EvaluateExpression () at /usr/src/contrib/llvm-project/lldb/source/Commands/CommandObjectExpression.cpp:414
#16 0x0000000001ad86ae in DoExecute () at /usr/src/contrib/llvm-project/lldb/source/Commands/CommandObjectExpression.cpp:646
#17 0x0000000001a5e3ed in Execute () at /usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandObject.cpp:1003
#18 0x0000000001a6c4a3 in HandleCommand () at /usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandInterpreter.cpp:1762
#19 0x0000000001a6f98c in IOHandlerInputComplete () at /usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandInterpreter.cpp:2760
#20 0x0000000001a90b08 in Run () at /usr/src/contrib/llvm-project/lldb/source/Core/IOHandler.cpp:548
#21 0x00000000019a6c6a in ExecuteIOHandlers () at /usr/src/contrib/llvm-project/lldb/source/Core/Debugger.cpp:903
#22 0x0000000001a70337 in RunCommandInterpreter () at /usr/src/contrib/llvm-project/lldb/source/Interpreter/CommandInterpreter.cpp:2946
#23 0x0000000001d9d812 in RunCommandInterpreter () at /usr/src/contrib/llvm-project/lldb/source/API/SBDebugger.cpp:1169
#24 0x0000000001918be8 in MainLoop () at /usr/src/contrib/llvm-project/lldb/tools/driver/Driver.cpp:675
#25 0x000000000191a114 in main () at /usr/src/contrib/llvm-project/lldb/tools/driver/Driver.cpp:890```

Fix the incorrect error catch by only instantiating an `Error` object if it is necessary.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D86355
bb-sycl pushed a commit that referenced this pull request Dec 9, 2020
CXXDeductionGuideDecl with a local typedef has its own copy of the
TypedefDecl with the CXXDeductionGuideDecl as the DeclContext of that
TypedefDecl.
```
      template <typename T> struct A {
        typedef T U;
        A(U, T);
      };
      A a{(int)0, (int)0};
```
Related discussion on cfe-dev:
http://lists.llvm.org/pipermail/cfe-dev/2020-November/067252.html

Without this fix, when we import the CXXDeductionGuideDecl (via
VisitFunctionDecl) then before creating the Decl we must import the
FunctionType. However, the first parameter's type is the afore mentioned
local typedef. So, we then start importing the TypedefDecl whose
DeclContext is the CXXDeductionGuideDecl itself. The infinite loop is
formed.
```
 #0 clang::ASTNodeImporter::VisitCXXDeductionGuideDecl(clang::CXXDeductionGuideDecl*) clang/lib/AST/ASTImporter.cpp:3543:0
 #1 clang::declvisitor::Base<std::add_pointer, clang::ASTNodeImporter, llvm::Expected<clang::Decl*> >::Visit(clang::Decl*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/DeclNodes.inc:405:0
 #2 clang::ASTImporter::ImportImpl(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8038:0
 #3 clang::ASTImporter::Import(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8200:0
 #4 clang::ASTImporter::ImportContext(clang::DeclContext*) clang/lib/AST/ASTImporter.cpp:8297:0
 #5 clang::ASTNodeImporter::ImportDeclContext(clang::Decl*, clang::DeclContext*&, clang::DeclContext*&) clang/lib/AST/ASTImporter.cpp:1852:0
 #6 clang::ASTNodeImporter::ImportDeclParts(clang::NamedDecl*, clang::DeclContext*&, clang::DeclContext*&, clang::DeclarationName&, clang::NamedDecl*&, clang::SourceLocation&) clang/lib/AST/ASTImporter.cpp:1628:0
 #7 clang::ASTNodeImporter::VisitTypedefNameDecl(clang::TypedefNameDecl*, bool) clang/lib/AST/ASTImporter.cpp:2419:0
 #8 clang::ASTNodeImporter::VisitTypedefDecl(clang::TypedefDecl*) clang/lib/AST/ASTImporter.cpp:2500:0
 #9 clang::declvisitor::Base<std::add_pointer, clang::ASTNodeImporter, llvm::Expected<clang::Decl*> >::Visit(clang::Decl*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/DeclNodes.inc:315:0
 #10 clang::ASTImporter::ImportImpl(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8038:0
 #11 clang::ASTImporter::Import(clang::Decl*) clang/lib/AST/ASTImporter.cpp:8200:0
 #12 llvm::Expected<clang::TypedefNameDecl*> clang::ASTNodeImporter::import<clang::TypedefNameDecl>(clang::TypedefNameDecl*) clang/lib/AST/ASTImporter.cpp:165:0
 #13 clang::ASTNodeImporter::VisitTypedefType(clang::TypedefType const*) clang/lib/AST/ASTImporter.cpp:1304:0
 #14 clang::TypeVisitor<clang::ASTNodeImporter, llvm::Expected<clang::QualType> >::Visit(clang::Type const*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/TypeNodes.inc:74:0
 #15 clang::ASTImporter::Import(clang::QualType) clang/lib/AST/ASTImporter.cpp:8071:0
 #16 llvm::Expected<clang::QualType> clang::ASTNodeImporter::import<clang::QualType>(clang::QualType const&) clang/lib/AST/ASTImporter.cpp:179:0
 #17 clang::ASTNodeImporter::VisitFunctionProtoType(clang::FunctionProtoType const*) clang/lib/AST/ASTImporter.cpp:1244:0
 #18 clang::TypeVisitor<clang::ASTNodeImporter, llvm::Expected<clang::QualType> >::Visit(clang::Type const*) /home/egbomrt/WORK/llvm5/build/debug/tools/clang/include/clang/AST/TypeNodes.inc:47:0
 #19 clang::ASTImporter::Import(clang::QualType) clang/lib/AST/ASTImporter.cpp:8071:0
 #20 llvm::Expected<clang::QualType> clang::ASTNodeImporter::import<clang::QualType>(clang::QualType const&) clang/lib/AST/ASTImporter.cpp:179:0
 #21 clang::QualType clang::ASTNodeImporter::importChecked<clang::QualType>(llvm::Error&, clang::QualType const&) clang/lib/AST/ASTImporter.cpp:198:0
 #22 clang::ASTNodeImporter::VisitFunctionDecl(clang::FunctionDecl*) clang/lib/AST/ASTImporter.cpp:3313:0
 #23 clang::ASTNodeImporter::VisitCXXDeductionGuideDecl(clang::CXXDeductionGuideDecl*) clang/lib/AST/ASTImporter.cpp:3543:0
```

The fix is to first create the TypedefDecl and only then start to import
the DeclContext.
Basically, we could do this during the import of all other Decls (not
just for typedefs). But it seems, there is only one another AST
construct that has a similar cycle: a struct defined as a function
parameter:
```
int struct_in_proto(struct data_t{int a;int b;} *d);

```
In that case, however, we had decided to return simply with an error
back then because that seemed to be a very rare construct.

Differential Revision: https://reviews.llvm.org/D92209
vmaksimo pushed a commit to vmaksimo/llvm that referenced this pull request Feb 19, 2021
bb-sycl pushed a commit that referenced this pull request Jul 30, 2021
There is a SIGSEGV at `DeduceTemplateArgumentsByTypeMatch`. The bug [#51171](https://bugs.llvm.org/show_bug.cgi?id=51171) was filled. The reproducer can be found at the bug description.

LIT test for the issue was added:
```
./bin/llvm-lit -v ../clang/test/SemaCXX/pr51171-crash.cpp
```

The debug stack trace is below:
```
 #0 0x00000000055afcb9 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Unix/Signals.inc:565:22
 #1 0x00000000055afd70 PrintStackTraceSignalHandler(void*) /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Unix/Signals.inc:632:1
 #2 0x00000000055add2d llvm::sys::RunSignalHandlers() /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Signals.cpp:97:20
 #3 0x00000000055af701 SignalHandler(int) /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Unix/Signals.inc:407:1
 #4 0x00007ffff7bc2b20 __restore_rt sigaction.c:0:0
 #5 0x00007ffff66a337f raise (/lib64/libc.so.6+0x3737f)
 #6 0x00007ffff668ddb5 abort (/lib64/libc.so.6+0x21db5)
 #7 0x00007ffff668dc89 _nl_load_domain.cold.0 loadmsgcat.c:0:0
 #8 0x00007ffff669ba76 .annobin___GI___assert_fail.end assert.c:0:0
 #9 0x000000000594b210 clang::QualType::getCommonPtr() const /home/ivanmurashko/local/llvm-project/clang/include/clang/AST/Type.h:684:5
#10 0x0000000005a12ca6 clang::QualType::getCanonicalType() const /home/ivanmurashko/local/llvm-project/clang/include/clang/AST/Type.h:6467:36
#11 0x0000000005a137a6 clang::ASTContext::getCanonicalType(clang::QualType) const /home/ivanmurashko/local/llvm-project/clang/include/clang/AST/ASTContext.h:2433:58
#12 0x0000000009204584 DeduceTemplateArgumentsByTypeMatch(clang::Sema&, clang::TemplateParameterList*, clang::QualType, clang::QualType, clang::sema::TemplateDeductionInfo&, llvm::SmallVectorImpl<clang::DeducedTemplateArgument>&, unsigned int, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaTemplateDeduction.cpp:1355:54
#13 0x000000000920df0d clang::Sema::DeduceTemplateArguments(clang::FunctionTemplateDecl*, clang::TemplateArgumentListInfo*, clang::QualType, clang::FunctionDecl*&, clang::sema::TemplateDeductionInfo&, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaTemplateDeduction.cpp:4354:47
#14 0x0000000009012b09 (anonymous namespace)::AddressOfFunctionResolver::AddMatchingTemplateFunction(clang::FunctionTemplateDecl*, clang::DeclAccessPair const&) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:12026:38
#15 0x0000000009013030 (anonymous namespace)::AddressOfFunctionResolver::FindAllFunctionsThatMatchTargetTypeExactly() /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:12119:9
#16 0x0000000009012679 (anonymous namespace)::AddressOfFunctionResolver::AddressOfFunctionResolver(clang::Sema&, clang::Expr*, clang::QualType const&, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:11931:5
#17 0x0000000009013c91 clang::Sema::ResolveAddressOfOverloadedFunction(clang::Expr*, clang::QualType, bool, clang::DeclAccessPair&, bool*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:12286:42
#18 0x0000000008fed85d IsStandardConversion(clang::Sema&, clang::Expr*, clang::QualType, bool, clang::StandardConversionSequence&, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:1712:49
#19 0x0000000008fec8ea TryImplicitConversion(clang::Sema&, clang::Expr*, clang::QualType, bool, clang::Sema::AllowedExplicit, bool, bool, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:1433:27
#20 0x0000000008ff90ba TryCopyInitialization(clang::Sema&, clang::Expr*, clang::QualType, bool, bool, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:5273:71
#21 0x00000000090024fb clang::Sema::AddBuiltinCandidate(clang::QualType*, llvm::ArrayRef<clang::Expr*>, clang::OverloadCandidateSet&, bool, unsigned int) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:7755:32
#22 0x000000000900513f (anonymous namespace)::BuiltinOperatorOverloadBuilder::addGenericBinaryArithmeticOverloads() /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:8633:30
#23 0x0000000009007624 clang::Sema::AddBuiltinOperatorCandidates(clang::OverloadedOperatorKind, clang::SourceLocation, llvm::ArrayRef<clang::Expr*>, clang::OverloadCandidateSet&) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:9205:51
#24 0x0000000009018734 clang::Sema::LookupOverloadedBinOp(clang::OverloadCandidateSet&, clang::OverloadedOperatorKind, clang::UnresolvedSetImpl const&, llvm::ArrayRef<clang::Expr*>, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:13469:1
#25 0x0000000009018d56 clang::Sema::CreateOverloadedBinOp(clang::SourceLocation, clang::BinaryOperatorKind, clang::UnresolvedSetImpl const&, clang::Expr*, clang::Expr*, bool, bool, clang::FunctionDecl*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:13568:24
#26 0x0000000008b24797 BuildOverloadedBinOp(clang::Sema&, clang::Scope*, clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaExpr.cpp:14606:65
#27 0x0000000008b24ed5 clang::Sema::BuildBinOp(clang::Scope*, clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaExpr.cpp:14691:73
#28 0x0000000008b245d4 clang::Sema::ActOnBinOp(clang::Scope*, clang::SourceLocation, clang::tok::TokenKind, clang::Expr*, clang::Expr*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaExpr.cpp:14566:1
#29 0x00000000085bfafb clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*, true>, clang::prec::Level) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseExpr.cpp:630:71
#30 0x00000000085bd922 clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseExpr.cpp:177:1
#31 0x00000000085cbbcd clang::Parser::ParseExpressionList(llvm::SmallVectorImpl<clang::Expr*>&, llvm::SmallVectorImpl<clang::SourceLocation>&, llvm::function_ref<void ()>) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseExpr.cpp:3368:40
#32 0x000000000857f49c clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseDecl.cpp:2416:5
#33 0x000000000857df16 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseDecl.cpp:2092:65
#34 0x000000000855f07b clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:1138:1
#35 0x000000000855f136 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:1153:57
#36 0x000000000855e644 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:975:58
#37 0x000000000855d717 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:720:42
#38 0x0000000008558e01 clang::ParseAST(clang::Sema&, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseAST.cpp:158:37
#39 0x000000000627a221 clang::ASTFrontendAction::ExecuteAction() /home/ivanmurashko/local/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1058:11
#40 0x0000000006bdcc31 clang::CodeGenAction::ExecuteAction() /home/ivanmurashko/local/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:1045:5
#41 0x0000000006279b4d clang::FrontendAction::Execute() /home/ivanmurashko/local/llvm-project/clang/lib/Frontend/FrontendAction.cpp:955:38
#42 0x00000000061c3fe9 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) /home/ivanmurashko/local/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:974:42
#43 0x00000000063f9c5e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /home/ivanmurashko/local/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:278:38
#44 0x0000000002603a03 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) /home/ivanmurashko/local/llvm-project/clang/tools/driver/cc1_main.cpp:246:40
#45 0x00000000025f8a39 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) /home/ivanmurashko/local/llvm-project/clang/tools/driver/driver.cpp:338:20
#46 0x00000000025f9107 main /home/ivanmurashko/local/llvm-project/clang/tools/driver/driver.cpp:415:26
#47 0x00007ffff668f493 __libc_start_main (/lib64/libc.so.6+0x23493)
#48 0x00000000025f729e _start (/data/users/ivanmurashko/llvm-project/build/bin/clang-13+0x25f729e)
```

Reviewed By: erichkeane

Differential Revision: https://reviews.llvm.org/D106583
bb-sycl pushed a commit that referenced this pull request Oct 6, 2021
Although THREADLOCAL variables are supported on Darwin they cannot be
used very early on during process init (before dyld has set it up).

Unfortunately the checked lock is used before dyld has setup TLS leading
to an abort call (`_tlv_boostrap()` is never supposed to be called at
runtime).

To avoid this problem `SANITIZER_CHECK_DEADLOCKS` is now disabled on
Darwin platforms. This fixes running TSan tests (an possibly other
Sanitizers) when `COMPILER_RT_DEBUG=ON`.

For reference the crashing backtrace looks like this:

```
* thread #1, stop reason = signal SIGABRT
  * frame #0: 0x00000002044da0ae dyld`__abort_with_payload + 10
    frame #1: 0x00000002044f01af dyld`abort_with_payload_wrapper_internal + 80
    frame #2: 0x00000002044f01e1 dyld`abort_with_payload + 9
    frame #3: 0x000000010c989060 dyld_sim`abort_with_payload + 26
    frame #4: 0x000000010c94908b dyld_sim`dyld4::halt(char const*) + 375
    frame #5: 0x000000010c988f5c dyld_sim`abort + 16
    frame #6: 0x000000010c96104f dyld_sim`dyld4::APIs::_tlv_bootstrap() + 9
    frame #7: 0x000000010cd8d6d2 libclang_rt.tsan_iossim_dynamic.dylib`__sanitizer::CheckedMutex::LockImpl(this=<unavailable>, pc=<unavailable>) at sanitizer_mutex.cpp:218:58 [opt]
    frame #8: 0x000000010cd8a0f7 libclang_rt.tsan_iossim_dynamic.dylib`__sanitizer::Mutex::Lock() [inlined] __sanitizer::CheckedMutex::Lock(this=0x000000010d733c90) at sanitizer_mutex.h:124:5 [opt]
    frame #9: 0x000000010cd8a0ee libclang_rt.tsan_iossim_dynamic.dylib`__sanitizer::Mutex::Lock(this=0x000000010d733c90) at sanitizer_mutex.h:162:19 [opt]
    frame #10: 0x000000010cd8a0bf libclang_rt.tsan_iossim_dynamic.dylib`__sanitizer::GenericScopedLock<__sanitizer::Mutex>::GenericScopedLock(this=0x000000030c7479a8, mu=<unavailable>) at sanitizer_mutex.h:364:10 [opt]
    frame #11: 0x000000010cd89819 libclang_rt.tsan_iossim_dynamic.dylib`__sanitizer::GenericScopedLock<__sanitizer::Mutex>::GenericScopedLock(this=0x000000030c7479a8, mu=<unavailable>) at sanitizer_mutex.h:363:67 [opt]
    frame #12: 0x000000010cd8985b libclang_rt.tsan_iossim_dynamic.dylib`__sanitizer::LibIgnore::OnLibraryLoaded(this=0x000000010d72f480, name=0x0000000000000000) at sanitizer_libignore.cpp:39:8 [opt]
    frame #13: 0x000000010cda7aaa libclang_rt.tsan_iossim_dynamic.dylib`__tsan::InitializeLibIgnore() at tsan_interceptors_posix.cpp:219:16 [opt]
    frame #14: 0x000000010cdce0bb libclang_rt.tsan_iossim_dynamic.dylib`__tsan::Initialize(thr=0x0000000110141400) at tsan_rtl.cpp:403:3 [opt]
    frame #15: 0x000000010cda7b8e libclang_rt.tsan_iossim_dynamic.dylib`__tsan::ScopedInterceptor::ScopedInterceptor(__tsan::ThreadState*, char const*, unsigned long) [inlined] __tsan::LazyInitialize(thr=0x0000000110141400) at tsan_rtl.h:665:5 [opt]
    frame #16: 0x000000010cda7b86 libclang_rt.tsan_iossim_dynamic.dylib`__tsan::ScopedInterceptor::ScopedInterceptor(this=0x000000030c747af8, thr=0x0000000110141400, fname=<unavailable>, pc=4568918787) at tsan_interceptors_posix.cpp:247:3 [opt]
    frame #17: 0x000000010cda7bb9 libclang_rt.tsan_iossim_dynamic.dylib`__tsan::ScopedInterceptor::ScopedInterceptor(this=0x000000030c747af8, thr=<unavailable>, fname=<unavailable>, pc=<unavailable>) at tsan_interceptors_posix.cpp:246:59 [opt]
    frame #18: 0x000000010cdb72b7 libclang_rt.tsan_iossim_dynamic.dylib`::wrap_strlcpy(dst="\xd2", src="0xd1d398d1bb0a007b", size=20) at sanitizer_common_interceptors.inc:7386:3 [opt]
    frame #19: 0x0000000110542b03 libsystem_c.dylib`__guard_setup + 140
    frame #20: 0x00000001104f8ab4 libsystem_c.dylib`_libc_initializer + 65
    ...
```

rdar://83723445

Differential Revision: https://reviews.llvm.org/D111243
etiotto pushed a commit that referenced this pull request Sep 6, 2022
bb-sycl pushed a commit that referenced this pull request Oct 31, 2022
Found by msan -fsanitize-memory-use-after-dtor.

==8259==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x55dbec54d2b8 in dtorRecord(clang::interp::Block*, char*, clang::interp::Descriptor*) clang/lib/AST/Interp/Descriptor.cpp:150:22
    #1 0x55dbec54bfcf in dtorArrayDesc(clang::interp::Block*, char*, clang::interp::Descriptor*) clang/lib/AST/Interp/Descriptor.cpp:97:7
    #2 0x55dbec508578 in invokeDtor clang/lib/AST/Interp/InterpBlock.h:79:7
    #3 0x55dbec508578 in clang::interp::Program::~Program() clang/lib/AST/Interp/Program.h:55:19
    #4 0x55dbec50657a in operator() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:55:5
    #5 0x55dbec50657a in std::__msan::unique_ptr<clang::interp::Program, std::__msan::default_delete<clang::interp::Program>>::~unique_ptr() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:261:7
    #6 0x55dbec5035a1 in clang::interp::Context::~Context() clang/lib/AST/Interp/Context.cpp:27:22
    #7 0x55dbebec1daa in operator() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:55:5
    #8 0x55dbebec1daa in std::__msan::unique_ptr<clang::interp::Context, std::__msan::default_delete<clang::interp::Context>>::~unique_ptr() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:261:7
    #9 0x55dbebe285f9 in clang::ASTContext::~ASTContext() clang/lib/AST/ASTContext.cpp:1038:40
    #10 0x55dbe941ff13 in llvm::RefCountedBase<clang::ASTContext>::Release() const llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:101:7
    #11 0x55dbe94353ef in release llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:159:38
    #12 0x55dbe94353ef in release llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:224:7
    #13 0x55dbe94353ef in ~IntrusiveRefCntPtr llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:191:27
    #14 0x55dbe94353ef in clang::CompilerInstance::setASTContext(clang::ASTContext*) clang/lib/Frontend/CompilerInstance.cpp:178:3
    #15 0x55dbe95ad0ad in clang::FrontendAction::EndSourceFile() clang/lib/Frontend/FrontendAction.cpp:1100:8
    #16 0x55dbe9445fcf in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) clang/lib/Frontend/CompilerInstance.cpp:1047:11
    #17 0x55dbe6b3afef in clang::ExecuteCompilerInvocation(clang::CompilerInstance*) clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:266:25
    #18 0x55dbe6b13288 in cc1_main(llvm::ArrayRef<char const*>, char const*, void*) clang/tools/driver/cc1_main.cpp:250:15
    #19 0x55dbe6b0095f in ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) clang/tools/driver/driver.cpp:319:12
    #20 0x55dbe6aff41c in clang_main(int, char**) clang/tools/driver/driver.cpp:395:12
    #21 0x7f9be07fa632 in __libc_start_main
    #22 0x55dbe6a702e9 in _start

  Member fields were destroyed
    #0 0x55dbe6a7da5d in __sanitizer_dtor_callback_fields compiler-rt/lib/msan/msan_interceptors.cpp:949:5
    #1 0x55dbec5094ac in ~SmallVectorImpl llvm/include/llvm/ADT/SmallVector.h:479:7
    #2 0x55dbec5094ac in ~SmallVectorImpl llvm/include/llvm/ADT/SmallVector.h:612:3
    #3 0x55dbec5094ac in llvm::SmallVector<clang::interp::Record::Base, 8u>::~SmallVector() llvm/include/llvm/ADT/SmallVector.h:1207:3
    #4 0x55dbec508e79 in clang::interp::Record::~Record() clang/lib/AST/Interp/Record.h:24:7
    #5 0x55dbec508612 in clang::interp::Program::~Program() clang/lib/AST/Interp/Program.h:49:26
    #6 0x55dbec50657a in operator() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:55:5
    #7 0x55dbec50657a in std::__msan::unique_ptr<clang::interp::Program, std::__msan::default_delete<clang::interp::Program>>::~unique_ptr() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:261:7
    #8 0x55dbec5035a1 in clang::interp::Context::~Context() clang/lib/AST/Interp/Context.cpp:27:22
    #9 0x55dbebec1daa in operator() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:55:5
    #10 0x55dbebec1daa in std::__msan::unique_ptr<clang::interp::Context, std::__msan::default_delete<clang::interp::Context>>::~unique_ptr() third_party/crosstool/v18/stable/toolchain/bin/../include/c++/v1/__memory/unique_ptr.h:261:7
    #11 0x55dbebe285f9 in clang::ASTContext::~ASTContext() clang/lib/AST/ASTContext.cpp:1038:40
    #12 0x55dbe941ff13 in llvm::RefCountedBase<clang::ASTContext>::Release() const llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:101:7
    #13 0x55dbe94353ef in release llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:159:38
    #14 0x55dbe94353ef in release llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:224:7
    #15 0x55dbe94353ef in ~IntrusiveRefCntPtr llvm/include/llvm/ADT/IntrusiveRefCntPtr.h:191:27
    #16 0x55dbe94353ef in clang::CompilerInstance::setASTContext(clang::ASTContext*) clang/lib/Frontend/CompilerInstance.cpp:178:3
    #17 0x55dbe95ad0ad in clang::FrontendAction::EndSourceFile() clang/lib/Frontend/FrontendAction.cpp:1100:8
    #18 0x55dbe9445fcf in clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) clang/lib/Frontend/CompilerInstance.cpp:1047:11
    #19 0x55dbe6b3afef in clang::ExecuteCompilerInvocation(clang::CompilerInstance*) clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:266:25
    #20 0x55dbe6b13288 in cc1_main(llvm::ArrayRef<char const*>, char const*, void*) clang/tools/driver/cc1_main.cpp:250:15
    #21 0x55dbe6b0095f in ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) clang/tools/driver/driver.cpp:319:12
    #22 0x55dbe6aff41c in clang_main(int, char**) clang/tools/driver/driver.cpp:395:12
    #23 0x7f9be07fa632 in __libc_start_main
    #24 0x55dbe6a702e9 in _start
bb-sycl pushed a commit that referenced this pull request Dec 19, 2022
…D112621

It seems like `LHS` and `RHS` could be empty range sets.
This caused an assertion failure inside RangeConstraintManager.

I'm hoisting out the check from the function into the call-site.
This way we could assert that we only want to deal with non-empty range
sets.

The relevant part of the trace:
```
 #6 0x00007fe6ff5f81a6 __assert_fail_base (/lib64/libc.so.6+0x2f1a6)
 #7 0x00007fe6ff5f8252 (/lib64/libc.so.6+0x2f252)
 #8 0x00000000049caed2 (anonymous namespace)::SymbolicRangeInferrer::VisitBinaryOperator(clang::ento::RangeSet, clang::BinaryOperatorKind, clang::ento::RangeSet, clang::QualType) RangeConstraintManager.cpp:0:0
 #9 0x00000000049c9867 (anonymous namespace)::SymbolicRangeInferrer::infer(clang::ento::SymExpr const*) RangeConstraintManager.cpp:0:0
#10 0x00000000049bebf5 (anonymous namespace)::RangeConstraintManager::assumeSymNE(llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>, clang::ento::SymExpr const*, llvm::APSInt const&, llvm::APSInt const&) RangeConstraintManager.cpp:0:0
#11 0x00000000049d368c clang::ento::RangedConstraintManager::assumeSymUnsupported(llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>, clang::ento::SymExpr const*, bool) (../../main-github/llvm/build-all/bin/clang+0x49d368c)
#12 0x00000000049f0b09 clang::ento::SimpleConstraintManager::assumeAux(llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>, clang::ento::NonLoc, bool) (../../main-github/llvm/build-all/bin/clang+0x49f0b09)
#13 0x00000000049f096a clang::ento::SimpleConstraintManager::assume(llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>, clang::ento::NonLoc, bool) (../../main-github/llvm/build-all/bin/clang+0x49f096a)
#14 0x00000000049f086d clang::ento::SimpleConstraintManager::assumeInternal(llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>, clang::ento::DefinedSVal, bool) (../../main-github/llvm/build-all/bin/clang+0x49f086d)
#15 0x000000000492d3e3 clang::ento::ConstraintManager::assumeDual(llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>, clang::ento::DefinedSVal) (../../main-github/llvm/build-all/bin/clang+0x492d3e3)
#16 0x0000000004955b6d clang::ento::ExprEngine::evalEagerlyAssumeBinOpBifurcation(clang::ento::ExplodedNodeSet&, clang::ento::ExplodedNodeSet&, clang::Expr const*) (../../main-github/llvm/build-all/bin/clang+0x4955b6d)
#17 0x00000000049514b6 clang::ento::ExprEngine::Visit(clang::Stmt const*, clang::ento::ExplodedNode*, clang::ento::ExplodedNodeSet&) (../../main-github/llvm/build-all/bin/clang+0x49514b6)
#18 0x000000000494c73e clang::ento::ExprEngine::ProcessStmt(clang::Stmt const*, clang::ento::ExplodedNode*) (../../main-github/llvm/build-all/bin/clang+0x494c73e)
#19 0x000000000494c459 clang::ento::ExprEngine::processCFGElement(clang::CFGElement, clang::ento::ExplodedNode*, unsigned int, clang::ento::NodeBuilderContext*) (../../main-github/llvm/build-all/bin/clang+0x494c459)
#20 0x000000000492f3d0 clang::ento::CoreEngine::HandlePostStmt(clang::CFGBlock const*, unsigned int, clang::ento::ExplodedNode*) (../../main-github/llvm/build-all/bin/clang+0x492f3d0)
#21 0x000000000492e1f6 clang::ento::CoreEngine::ExecuteWorkList(clang::LocationContext const*, unsigned int, llvm::IntrusiveRefCntPtr<clang::ento::ProgramState const>) (../../main-github/llvm/build-all/bin/clang+0x492e1f6)
```

Differential Revision: https://reviews.llvm.org/D112621
iclsrc pushed a commit that referenced this pull request Mar 22, 2023
This change prevents rare deadlocks observed for specific macOS/iOS GUI
applications which issue many `dlopen()` calls from multiple different
threads at startup and where TSan finds and reports a race during
startup.  Providing a reliable test for this has been deemed infeasible.

Although I've only observed this deadlock on Apple platforms,
conceptually the cause is not confined to Apple code so the fix lives in
platform-independent code.

Deadlock scenario:
```
Thread 2                    | Thread 4
ReportRace()                |
Lock internal TSan mutexes  |
  &ctx->slot_mtx            |
                            | dlopen() interceptor
                            | OnLibraryLoaded()
                            | MemoryMappingLayout::DumpListOfModules()
                            | calls dyld API, which takes internal lock
                            | lock() interceptor
                            | TSan tries to take internal mutexes again
                            |   &ctx->slot_mtx
call into symbolizer        |
MemoryMappingLayout::DumpListOfModules()
calls dyld API, which hangs on trying to take lock
```
Resulting in:
* Thread 2 has internal TSan mutex, blocked on dyld lock
* Thread 4 has dyld lock, blocked on internal TSan mutex

The fix prevents this situation by not intercepting any of the calls
originating from `MemoryMappingLayout::DumpListOfModules()`.

Stack traces for deadlock between ReportRace() and dlopen() interceptor:
```
thread #2, queue = 'com.apple.root.default-qos'
  frame #0: libsystem_kernel.dylib
  frame #1: libclang_rt.tsan_osx_dynamic.dylib`::wrap_os_unfair_lock_lock_with_options(lock=<unavailable>, options=<unavailable>) at tsan_interceptors_mac.cpp:306:3
  frame #2: dyld`dyld4::RuntimeLocks::withLoadersReadLock(this=0x000000016f21b1e0, work=0x00000001814523c0) block_pointer) at DyldRuntimeState.cpp:227:28
  frame #3: dyld`dyld4::APIs::_dyld_get_image_header(this=0x0000000101012a20, imageIndex=614) at DyldAPIs.cpp:240:11
  frame #4: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::MemoryMappingLayout::CurrentImageHeader(this=<unavailable>) at sanitizer_procmaps_mac.cpp:391:35
  frame #5: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::MemoryMappingLayout::Next(this=0x000000016f2a2800, segment=0x000000016f2a2738) at sanitizer_procmaps_mac.cpp:397:51
  frame #6: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::MemoryMappingLayout::DumpListOfModules(this=0x000000016f2a2800, modules=0x00000001011000a0) at sanitizer_procmaps_mac.cpp:460:10
  frame #7: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::ListOfModules::init(this=0x00000001011000a0) at sanitizer_mac.cpp:610:18
  frame #8: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::Symbolizer::FindModuleForAddress(unsigned long) [inlined] __sanitizer::Symbolizer::RefreshModules(this=0x0000000101100078) at sanitizer_symbolizer_libcdep.cpp:185:12
  frame #9: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::Symbolizer::FindModuleForAddress(this=0x0000000101100078, address=6465454512) at sanitizer_symbolizer_libcdep.cpp:204:5
  frame #10: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::Symbolizer::SymbolizePC(this=0x0000000101100078, addr=6465454512) at sanitizer_symbolizer_libcdep.cpp:88:15
  frame #11: libclang_rt.tsan_osx_dynamic.dylib`__tsan::SymbolizeCode(addr=6465454512) at tsan_symbolize.cpp:106:35
  frame #12: libclang_rt.tsan_osx_dynamic.dylib`__tsan::SymbolizeStack(trace=StackTrace @ 0x0000600002d66d00) at tsan_rtl_report.cpp:112:28
  frame #13: libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedReportBase::AddMemoryAccess(this=0x000000016f2a2a90, addr=4381057136, external_tag=<unavailable>, s=<unavailable>, tid=<unavailable>, stack=<unavailable>, mset=0x00000001012fc310) at tsan_rtl_report.cpp:190:16
  frame #14: libclang_rt.tsan_osx_dynamic.dylib`__tsan::ReportRace(thr=0x00000001012fc000, shadow_mem=0x000008020a4340e0, cur=<unavailable>, old=<unavailable>, typ0=1) at tsan_rtl_report.cpp:795:9
  frame #15: libclang_rt.tsan_osx_dynamic.dylib`__tsan::DoReportRace(thr=0x00000001012fc000, shadow_mem=0x000008020a4340e0, cur=Shadow @ x22, old=Shadow @ 0x0000600002d6b4f0, typ=1) at tsan_rtl_access.cpp:166:3
  frame #16: libclang_rt.tsan_osx_dynamic.dylib`::__tsan_read8(void *) at tsan_rtl_access.cpp:220:5
  frame #17: libclang_rt.tsan_osx_dynamic.dylib`::__tsan_read8(void *) [inlined] __tsan::MemoryAccess(thr=0x00000001012fc000, pc=<unavailable>, addr=<unavailable>, size=8, typ=1) at tsan_rtl_access.cpp:442:3
  frame #18: libclang_rt.tsan_osx_dynamic.dylib`::__tsan_read8(addr=<unavailable>) at tsan_interface.inc:34:3
  <call into TSan from from instrumented code>

thread #4, queue = 'com.apple.dock.fullscreen'
  frame #0:  libsystem_kernel.dylib
  frame #1:  libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::FutexWait(p=<unavailable>, cmp=<unavailable>) at sanitizer_mac.cpp:540:3
  frame #2:  libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::Semaphore::Wait(this=<unavailable>) at sanitizer_mutex.cpp:35:7
  frame #3:  libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::Mutex::Lock(this=0x0000000102992a80) at sanitizer_mutex.h:196:18
  frame #4:  libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedInterceptor::~ScopedInterceptor() [inlined] __sanitizer::GenericScopedLock<__sanitizer::Mutex>::GenericScopedLock(this=<unavailable>, mu=0x0000000102992a80) at sanitizer_mutex.h:383:10
  frame #5:  libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedInterceptor::~ScopedInterceptor() [inlined] __sanitizer::GenericScopedLock<__sanitizer::Mutex>::GenericScopedLock(this=<unavailable>, mu=0x0000000102992a80) at sanitizer_mutex.h:382:77
  frame #6:  libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedInterceptor::~ScopedInterceptor() at tsan_rtl.h:708:10
  frame #7:  libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedInterceptor::~ScopedInterceptor() [inlined] __tsan::TryTraceFunc(thr=0x000000010f084000, pc=0) at tsan_rtl.h:751:7
  frame #8:  libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedInterceptor::~ScopedInterceptor() [inlined] __tsan::FuncExit(thr=0x000000010f084000) at tsan_rtl.h:798:7
  frame #9:  libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedInterceptor::~ScopedInterceptor(this=0x000000016f3ba280) at tsan_interceptors_posix.cpp:300:5
  frame #10: libclang_rt.tsan_osx_dynamic.dylib`__tsan::ScopedInterceptor::~ScopedInterceptor(this=<unavailable>) at tsan_interceptors_posix.cpp:293:41
  frame #11: libclang_rt.tsan_osx_dynamic.dylib`::wrap_os_unfair_lock_lock_with_options(lock=0x000000016f21b1e8, options=OS_UNFAIR_LOCK_NONE) at tsan_interceptors_mac.cpp:310:1
  frame #12: dyld`dyld4::RuntimeLocks::withLoadersReadLock(this=0x000000016f21b1e0, work=0x00000001814525d4) block_pointer) at DyldRuntimeState.cpp:227:28
  frame #13: dyld`dyld4::APIs::_dyld_get_image_vmaddr_slide(this=0x0000000101012a20, imageIndex=412) at DyldAPIs.cpp:273:11
  frame #14: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::MemoryMappingLayout::Next(__sanitizer::MemoryMappedSegment*) at sanitizer_procmaps_mac.cpp:286:17
  frame #15: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::MemoryMappingLayout::Next(this=0x000000016f3ba560, segment=0x000000016f3ba498) at sanitizer_procmaps_mac.cpp:432:15
  frame #16: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::MemoryMappingLayout::DumpListOfModules(this=0x000000016f3ba560, modules=0x000000016f3ba618) at sanitizer_procmaps_mac.cpp:460:10
  frame #17: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::ListOfModules::init(this=0x000000016f3ba618) at sanitizer_mac.cpp:610:18
  frame #18: libclang_rt.tsan_osx_dynamic.dylib`__sanitizer::LibIgnore::OnLibraryLoaded(this=0x0000000101f3aa40, name="<some library>") at sanitizer_libignore.cpp:54:11
  frame #19: libclang_rt.tsan_osx_dynamic.dylib`::wrap_dlopen(filename="<some library>", flag=<unavailable>) at sanitizer_common_interceptors.inc:6466:3
  <library code>
```

rdar://106766395

Differential Revision: https://reviews.llvm.org/D146593
iclsrc pushed a commit that referenced this pull request Oct 27, 2023
…tePluginObject

After llvm/llvm-project#68052 this function changed from returning
a nullptr with `return {};` to returning Expected and hitting `llvm_unreachable` before it could
do so.

I gather that we're never supposed to call this function, but on Windows we actually do call
this function because `interpreter->CreateScriptedProcessInterface()` returns
`ScriptedProcessInterface` not `ScriptedProcessPythonInterface`. Likely because
`target_sp->GetDebugger().GetScriptInterpreter()` also does not return a Python related class.

The previously XFAILed test crashed with:
```
 # .---command stderr------------
 # | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
 # | Stack dump:
 # | 0.  Program arguments: c:\\users\\tcwg\\david.spickett\\build-llvm\\bin\\lldb-test.exe ir-memory-map C:\\Users\\tcwg\\david.spickett\\build-llvm\\tools\\lldb\\test\\Shell\\Expr\\Output\\TestIRMemoryMapWindows.test.tmp C:\\Users\\tcwg\\david.spickett\\llvm-project\\lldb\\test\\Shell\\Expr/Inputs/ir-memory-map-basic
 # | 1.  HandleCommand(command = "run")
 # | Exception Code: 0xC000001D
 # | #0 0x00007ff696b5f588 lldb_private::ScriptedProcessInterface::CreatePluginObject(class llvm::StringRef, class lldb_private::ExecutionContext &, class std::shared_ptr<class lldb_private::StructuredData::Dictionary>, class lldb_private::StructuredData::Generic *) C:\Users\tcwg\david.spickett\llvm-project\lldb\include\lldb\Interpreter\Interfaces\ScriptedProcessInterface.h:28:0
 # | #1 0x00007ff696b1d808 llvm::Expected<std::shared_ptr<lldb_private::StructuredData::Generic> >::operator bool C:\Users\tcwg\david.spickett\llvm-project\llvm\include\llvm\Support\Error.h:567:0
 # | #2 0x00007ff696b1d808 lldb_private::ScriptedProcess::ScriptedProcess(class std::shared_ptr<class lldb_private::Target>, class std::shared_ptr<class lldb_private::Listener>, class lldb_private::ScriptedMetadata const &, class lldb_private::Status &) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Plugins\Process\scripted\ScriptedProcess.cpp:115:0
 # | #3 0x00007ff696b1d124 std::shared_ptr<lldb_private::ScriptedProcess>::shared_ptr C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1478:0
 # | #4 0x00007ff696b1d124 lldb_private::ScriptedProcess::CreateInstance(class std::shared_ptr<class lldb_private::Target>, class std::shared_ptr<class lldb_private::Listener>, class lldb_private::FileSpec const *, bool) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Plugins\Process\scripted\ScriptedProcess.cpp:61:0
 # | #5 0x00007ff69699c8f4 std::_Ptr_base<lldb_private::Process>::_Move_construct_from C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1237:0
 # | #6 0x00007ff69699c8f4 std::shared_ptr<lldb_private::Process>::shared_ptr C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1534:0
 # | #7 0x00007ff69699c8f4 std::shared_ptr<lldb_private::Process>::operator= C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1594:0
 # | #8 0x00007ff69699c8f4 lldb_private::Process::FindPlugin(class std::shared_ptr<class lldb_private::Target>, class llvm::StringRef, class std::shared_ptr<class lldb_private::Listener>, class lldb_private::FileSpec const *, bool) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Target\Process.cpp:396:0
 # | #9 0x00007ff6969bd708 std::_Ptr_base<lldb_private::Process>::_Move_construct_from C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1237:0
 # | #10 0x00007ff6969bd708 std::shared_ptr<lldb_private::Process>::shared_ptr C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1534:0
 # | #11 0x00007ff6969bd708 std::shared_ptr<lldb_private::Process>::operator= C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1594:0
 # | #12 0x00007ff6969bd708 lldb_private::Target::CreateProcess(class std::shared_ptr<class lldb_private::Listener>, class llvm::StringRef, class lldb_private::FileSpec const *, bool) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Target\Target.cpp:215:0
 # | #13 0x00007ff696b13af0 std::_Ptr_base<lldb_private::Process>::_Ptr_base C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1230:0
 # | #14 0x00007ff696b13af0 std::shared_ptr<lldb_private::Process>::shared_ptr C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1524:0
 # | #15 0x00007ff696b13af0 lldb_private::PlatformWindows::DebugProcess(class lldb_private::ProcessLaunchInfo &, class lldb_private::Debugger &, class lldb_private::Target &, class lldb_private::Status &) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Plugins\Platform\Windows\PlatformWindows.cpp:495:0
 # | #16 0x00007ff6969cf590 std::_Ptr_base<lldb_private::Process>::_Move_construct_from C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1237:0
 # | #17 0x00007ff6969cf590 std::shared_ptr<lldb_private::Process>::shared_ptr C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1534:0
 # | #18 0x00007ff6969cf590 std::shared_ptr<lldb_private::Process>::operator= C:\Program Files\Microsoft Visual Studio\2022\Preview\VC\Tools\MSVC\14.35.32124\include\memory:1594:0
 # | #19 0x00007ff6969cf590 lldb_private::Target::Launch(class lldb_private::ProcessLaunchInfo &, class lldb_private::Stream *) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Target\Target.cpp:3274:0
 # | #20 0x00007ff696fff82c CommandObjectProcessLaunch::DoExecute(class lldb_private::Args &, class lldb_private::CommandReturnObject &) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Commands\CommandObjectProcess.cpp:258:0
 # | #21 0x00007ff696fab6c0 lldb_private::CommandObjectParsed::Execute(char const *, class lldb_private::CommandReturnObject &) C:\Users\tcwg\david.spickett\llvm-project\lldb\source\Interpreter\CommandObject.cpp:751:0
 # `-----------------------------
 # error: command failed with exit status: 0xc000001d
```

That might be a bug on the Windows side, or an artifact of how our build is setup,
but whatever it is, having `CreatePluginObject` return an error and
the caller check it, fixes the failing test.

The built lldb can run the script command to use Python, but I'm not sure if that means
anything.
iclsrc pushed a commit that referenced this pull request Feb 21, 2024
…(#80904)"

This reverts commit b1ac052.

This commit breaks coroutine splitting for non-swift calling convention
functions. In this example:

```ll
; ModuleID = 'repro.ll'
source_filename = "stdlib/test/runtime/test_llcl.mojo"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@0 = internal constant { i32, i32 } { i32 trunc (i64 sub (i64 ptrtoint (ptr @craSH to i64), i64 ptrtoint (ptr getelementptr inbounds ({ i32, i32 }, ptr @0, i32 0, i32 1) to i64)) to i32), i32 64 }

define dso_local void @af_suspend_fn(ptr %0, i64 %1, ptr %2) #0 {
  ret void
}

define dso_local void @craSH(ptr %0) #0 {
  %2 = call token @llvm.coro.id.async(i32 64, i32 8, i32 0, ptr @0)
  %3 = call ptr @llvm.coro.begin(token %2, ptr null)
  %4 = getelementptr inbounds { ptr, { ptr, ptr }, i64, { ptr, i1 }, i64, i64 }, ptr poison, i32 0, i32 0
  %5 = call ptr @llvm.coro.async.resume()
  store ptr %5, ptr %4, align 8
  %6 = call { ptr, ptr, ptr } (i32, ptr, ptr, ...) @llvm.coro.suspend.async.sl_p0p0p0s(i32 0, ptr %5, ptr @ctxt_proj_fn, ptr @af_suspend_fn, ptr poison, i64 -1, ptr poison)
  ret void
}

define dso_local ptr @ctxt_proj_fn(ptr %0) #0 {
  ret ptr %0
}

; Function Attrs: nomerge nounwind
declare { ptr, ptr, ptr } @llvm.coro.suspend.async.sl_p0p0p0s(i32, ptr, ptr, ...) #1

; Function Attrs: nounwind
declare token @llvm.coro.id.async(i32, i32, i32, ptr) #2

; Function Attrs: nounwind
declare ptr @llvm.coro.begin(token, ptr writeonly) #2

; Function Attrs: nomerge nounwind
declare ptr @llvm.coro.async.resume() #1

attributes #0 = { "target-features"="+adx,+aes,+avx,+avx2,+bmi,+bmi2,+clflushopt,+clwb,+clzero,+crc32,+cx16,+cx8,+f16c,+fma,+fsgsbase,+fxsr,+invpcid,+lzcnt,+mmx,+movbe,+mwaitx,+pclmul,+pku,+popcnt,+prfchw,+rdpid,+rdpru,+rdrnd,+rdseed,+sahf,+sha,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+sse4a,+ssse3,+vaes,+vpclmulqdq,+wbnoinvd,+x87,+xsave,+xsavec,+xsaveopt,+xsaves" }
attributes #1 = { nomerge nounwind }
attributes #2 = { nounwind }
```

This verifier crashes after the `coro-split` pass with

```
cannot guarantee tail call due to mismatched parameter counts
  musttail call void @af_suspend_fn(ptr poison, i64 -1, ptr poison)
LLVM ERROR: Broken function
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: opt ../../../reduced.ll -O0
 #0 0x00007f1d89645c0e __interceptor_backtrace.part.0 /build/gcc-11-XeT9lY/gcc-11-11.4.0/build/x86_64-linux-gnu/libsanitizer/asan/../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:4193:28
 #1 0x0000556d94d254f7 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Support/Unix/Signals.inc:723:22
 #2 0x0000556d94d19a2f llvm::sys::RunSignalHandlers() /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Support/Signals.cpp:105:20
 #3 0x0000556d94d1aa42 SignalHandler(int) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Support/Unix/Signals.inc:371:36
 #4 0x00007f1d88e42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #5 0x00007f1d88e969fc __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #6 0x00007f1d88e969fc __pthread_kill_internal ./nptl/pthread_kill.c:78:10
 #7 0x00007f1d88e969fc pthread_kill ./nptl/pthread_kill.c:89:10
 #8 0x00007f1d88e42476 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #9 0x00007f1d88e287f3 abort ./stdlib/abort.c:81:7
 #10 0x0000556d8944be01 std::vector<llvm::json::Value, std::allocator<llvm::json::Value>>::size() const /usr/include/c++/11/bits/stl_vector.h:919:40
 #11 0x0000556d8944be01 bool std::operator==<llvm::json::Value, std::allocator<llvm::json::Value>>(std::vector<llvm::json::Value, std::allocator<llvm::json::Value>> const&, std::vector<llvm::json::Value, std::allocator<llvm::json::Value>> const&) /usr/include/c++/11/bits/stl_vector.h:1893:23
 #12 0x0000556d8944be01 llvm::json::operator==(llvm::json::Array const&, llvm::json::Array const&) /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/Support/JSON.h:572:69
 #13 0x0000556d8944be01 llvm::json::operator==(llvm::json::Value const&, llvm::json::Value const&) (.cold) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Support/JSON.cpp:204:28
 #14 0x0000556d949ed2bd llvm::report_fatal_error(char const*, bool) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Support/ErrorHandling.cpp:82:70
 #15 0x0000556d8e37e876 llvm::SmallVectorBase<unsigned int>::size() const /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/ADT/SmallVector.h:91:32
 #16 0x0000556d8e37e876 llvm::SmallVectorTemplateCommon<llvm::DiagnosticInfoOptimizationBase::Argument, void>::end() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/ADT/SmallVector.h:282:41
 #17 0x0000556d8e37e876 llvm::SmallVector<llvm::DiagnosticInfoOptimizationBase::Argument, 4u>::~SmallVector() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/ADT/SmallVector.h:1215:24
 #18 0x0000556d8e37e876 llvm::DiagnosticInfoOptimizationBase::~DiagnosticInfoOptimizationBase() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/DiagnosticInfo.h:413:7
 #19 0x0000556d8e37e876 llvm::DiagnosticInfoIROptimization::~DiagnosticInfoIROptimization() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/DiagnosticInfo.h:622:7
 #20 0x0000556d8e37e876 llvm::OptimizationRemark::~OptimizationRemark() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/DiagnosticInfo.h:689:7
 #21 0x0000556d8e37e876 operator() /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Transforms/Coroutines/CoroSplit.cpp:2213:14
 #22 0x0000556d8e37e876 emit<llvm::CoroSplitPass::run(llvm::LazyCallGraph::SCC&, llvm::CGSCCAnalysisManager&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&)::<lambda()> > /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/Analysis/OptimizationRemarkEmitter.h:83:12
 #23 0x0000556d8e37e876 llvm::CoroSplitPass::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Transforms/Coroutines/CoroSplit.cpp:2212:13
 #24 0x0000556d8c36ecb1 llvm::detail::PassModel<llvm::LazyCallGraph::SCC, llvm::CoroSplitPass, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:91:3
 #25 0x0000556d91c1a84f llvm::PassManager<llvm::LazyCallGraph::SCC, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Analysis/CGSCCPassManager.cpp:90:12
 #26 0x0000556d8c3690d1 llvm::detail::PassModel<llvm::LazyCallGraph::SCC, llvm::PassManager<llvm::LazyCallGraph::SCC, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&>::run(llvm::LazyCallGraph::SCC&, llvm::AnalysisManager<llvm::LazyCallGraph::SCC, llvm::LazyCallGraph&>&, llvm::LazyCallGraph&, llvm::CGSCCUpdateResult&) /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:91:3
 #27 0x0000556d91c2162d llvm::ModuleToPostOrderCGSCCPassAdaptor::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Analysis/CGSCCPassManager.cpp:278:18
 #28 0x0000556d8c369035 llvm::detail::PassModel<llvm::Module, llvm::ModuleToPostOrderCGSCCPassAdaptor, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:91:3
 #29 0x0000556d9457abc5 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/PassManager.h:247:20
 #30 0x0000556d8e30979e llvm::CoroConditionalWrapper::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/ubuntu/modular/third-party/llvm-project/llvm/lib/Transforms/Coroutines/CoroConditionalWrapper.cpp:19:74
 #31 0x0000556d8c365755 llvm::detail::PassModel<llvm::Module, llvm::CoroConditionalWrapper, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/PassManagerInternal.h:91:3
 #32 0x0000556d9457abc5 llvm::PassManager<llvm::Module, llvm::AnalysisManager<llvm::Module>>::run(llvm::Module&, llvm::AnalysisManager<llvm::Module>&) /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/PassManager.h:247:20
 #33 0x0000556d89818556 llvm::SmallPtrSetImplBase::isSmall() const /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:196:33
 #34 0x0000556d89818556 llvm::SmallPtrSetImplBase::~SmallPtrSetImplBase() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:84:17
 #35 0x0000556d89818556 llvm::SmallPtrSetImpl<llvm::AnalysisKey*>::~SmallPtrSetImpl() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:321:7
 #36 0x0000556d89818556 llvm::SmallPtrSet<llvm::AnalysisKey*, 2u>::~SmallPtrSet() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/ADT/SmallPtrSet.h:427:7
 #37 0x0000556d89818556 llvm::PreservedAnalyses::~PreservedAnalyses() /home/ubuntu/modular/third-party/llvm-project/llvm/include/llvm/IR/Analysis.h:109:7
 #38 0x0000556d89818556 llvm::runPassPipeline(llvm::StringRef, llvm::Module&, llvm::TargetMachine*, llvm::TargetLibraryInfoImpl*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::ToolOutputFile*, llvm::StringRef, llvm::ArrayRef<llvm::PassPlugin>, llvm::ArrayRef<std::function<void (llvm::PassBuilder&)>>, llvm::opt_tool::OutputKind, llvm::opt_tool::VerifierKind, bool, bool, bool, bool, bool, bool, bool) /home/ubuntu/modular/third-party/llvm-project/llvm/tools/opt/NewPMDriver.cpp:532:10
 #39 0x0000556d897e3939 optMain /home/ubuntu/modular/third-party/llvm-project/llvm/tools/opt/optdriver.cpp:737:27
 #40 0x0000556d89455461 main /home/ubuntu/modular/third-party/llvm-project/llvm/tools/opt/opt.cpp:25:33
 #41 0x00007f1d88e29d90 __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:58:16
 #42 0x00007f1d88e29e40 call_init ./csu/../csu/libc-start.c:128:20
 #43 0x00007f1d88e29e40 __libc_start_main ./csu/../csu/libc-start.c:379:5
 #44 0x0000556d897b6335 _start (/home/ubuntu/modular/.derived/third-party/llvm-project/build-relwithdebinfo-asan/bin/opt+0x150c335)
Aborted (core dumped)
iclsrc pushed a commit that referenced this pull request Mar 9, 2024
TestCases/Misc/Linux/sigaction.cpp fails because dlsym() may call malloc
on failure. And then the wrapped malloc appears to access thread local
storage using global dynamic accesses, thus calling
___interceptor___tls_get_addr, before REAL(__tls_get_addr) has
been set, so we get a crash inside ___interceptor___tls_get_addr. For
example, this can happen when looking up __isoc23_scanf which might not
exist in some libcs.

Fix this by marking the thread local variable accessed inside the
debug checks as "initial-exec", which does not require __tls_get_addr.

This is probably a better alternative to llvm/llvm-project#83886.

This fixes a different crash but is related to llvm/llvm-project#46204.

Backtrace:
```
#0 0x0000000000000000 in ?? ()
#1 0x00007ffff6a9d89e in ___interceptor___tls_get_addr (arg=0x7ffff6b27be8) at /path/to/llvm/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:2759
#2 0x00007ffff6a46bc6 in __sanitizer::CheckedMutex::LockImpl (this=0x7ffff6b27be8, pc=140737331846066) at /path/to/llvm/compiler-rt/lib/sanitizer_common/sanitizer_mutex.cpp:218
#3 0x00007ffff6a448b2 in __sanitizer::CheckedMutex::Lock (this=0x7ffff6b27be8, this@entry=0x730000000580) at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_mutex.h:129
#4 __sanitizer::Mutex::Lock (this=0x7ffff6b27be8, this@entry=0x730000000580) at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_mutex.h:167
#5 0x00007ffff6abdbb2 in __sanitizer::GenericScopedLock<__sanitizer::Mutex>::GenericScopedLock (mu=0x730000000580, this=<optimized out>) at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_mutex.h:383
#6 __sanitizer::SizeClassAllocator64<__tsan::AP64>::GetFromAllocator (this=0x7ffff7487dc0 <__tsan::allocator_placeholder>, stat=stat@entry=0x7ffff570db68, class_id=11, chunks=chunks@entry=0x7ffff5702cc8, n_chunks=n_chunks@entry=128) at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_allocator_primary64.h:207
#7 0x00007ffff6abdaa0 in __sanitizer::SizeClassAllocator64LocalCache<__sanitizer::SizeClassAllocator64<__tsan::AP64> >::Refill (this=<optimized out>, c=c@entry=0x7ffff5702cb8, allocator=<optimized out>, class_id=<optimized out>)
 at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_allocator_local_cache.h:103
#8 0x00007ffff6abd731 in __sanitizer::SizeClassAllocator64LocalCache<__sanitizer::SizeClassAllocator64<__tsan::AP64> >::Allocate (this=0x7ffff6b27be8, allocator=0x7ffff5702cc8, class_id=140737311157448)
 at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_allocator_local_cache.h:39
#9 0x00007ffff6abc397 in __sanitizer::CombinedAllocator<__sanitizer::SizeClassAllocator64<__tsan::AP64>, __sanitizer::LargeMmapAllocatorPtrArrayDynamic>::Allocate (this=0x7ffff5702cc8, cache=0x7ffff6b27be8, size=<optimized out>, size@entry=175, alignment=alignment@entry=16)
 at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_allocator_combined.h:69
#10 0x00007ffff6abaa6a in __tsan::user_alloc_internal (thr=0x7ffff7ebd980, pc=140737331499943, sz=sz@entry=175, align=align@entry=16, signal=true) at /path/to/llvm/compiler-rt/lib/tsan/rtl/tsan_mman.cpp:198
#11 0x00007ffff6abb0d1 in __tsan::user_alloc (thr=0x7ffff6b27be8, pc=140737331846066, sz=11, sz@entry=175) at /path/to/llvm/compiler-rt/lib/tsan/rtl/tsan_mman.cpp:223
#12 0x00007ffff6a693b5 in ___interceptor_malloc (size=175) at /path/to/llvm/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:666
#13 0x00007ffff7fce7f2 in malloc (size=175) at ../include/rtld-malloc.h:56
#14 __GI__dl_exception_create_format (exception=exception@entry=0x7fffffffd0d0, objname=0x7ffff7fc3550 "/path/to/llvm/compiler-rt/cmake-build-all-sanitizers/lib/linux/libclang_rt.tsan-x86_64.so",
 fmt=fmt@entry=0x7ffff7ff2db9 "undefined symbol: %s%s%s") at ./elf/dl-exception.c:157
#15 0x00007ffff7fd50e8 in _dl_lookup_symbol_x (undef_name=0x7ffff6af868b "__isoc23_scanf", undef_map=<optimized out>, ref=0x7fffffffd148, symbol_scope=<optimized out>, version=<optimized out>, type_class=0, flags=2, skip_map=0x7ffff7fc35e0) at ./elf/dl-lookup.c:793
--Type <RET> for more, q to quit, c to continue without paging--
#16 0x00007ffff656d6ed in do_sym (handle=<optimized out>, name=0x7ffff6af868b "__isoc23_scanf", who=0x7ffff6a3bb84 <__interception::InterceptFunction(char const*, unsigned long*, unsigned long, unsigned long)+36>, vers=vers@entry=0x0, flags=flags@entry=2) at ./elf/dl-sym.c:146
#17 0x00007ffff656d9dd in _dl_sym (handle=<optimized out>, name=<optimized out>, who=<optimized out>) at ./elf/dl-sym.c:195
#18 0x00007ffff64a2854 in dlsym_doit (a=a@entry=0x7fffffffd3b0) at ./dlfcn/dlsym.c:40
#19 0x00007ffff7fcc489 in __GI__dl_catch_exception (exception=exception@entry=0x7fffffffd310, operate=0x7ffff64a2840 <dlsym_doit>, args=0x7fffffffd3b0) at ./elf/dl-catch.c:237
#20 0x00007ffff7fcc5af in _dl_catch_error (objname=0x7fffffffd368, errstring=0x7fffffffd370, mallocedp=0x7fffffffd367, operate=<optimized out>, args=<optimized out>) at ./elf/dl-catch.c:256
#21 0x00007ffff64a2257 in _dlerror_run (operate=operate@entry=0x7ffff64a2840 <dlsym_doit>, args=args@entry=0x7fffffffd3b0) at ./dlfcn/dlerror.c:138
#22 0x00007ffff64a28e5 in dlsym_implementation (dl_caller=<optimized out>, name=<optimized out>, handle=<optimized out>) at ./dlfcn/dlsym.c:54
#23 ___dlsym (handle=<optimized out>, name=<optimized out>) at ./dlfcn/dlsym.c:68
#24 0x00007ffff6a3bb84 in __interception::GetFuncAddr (name=0x7ffff6af868b "__isoc23_scanf", trampoline=140737311157448) at /path/to/llvm/compiler-rt/lib/interception/interception_linux.cpp:42
#25 __interception::InterceptFunction (name=0x7ffff6af868b "__isoc23_scanf", ptr_to_real=0x7ffff74850e8 <__interception::real___isoc23_scanf>, func=11, trampoline=140737311157448)
 at /path/to/llvm/compiler-rt/lib/interception/interception_linux.cpp:61
#26 0x00007ffff6a9f2d9 in InitializeCommonInterceptors () at /path/to/llvm/compiler-rt/lib/tsan/rtl/../../sanitizer_common/sanitizer_common_interceptors.inc:10315
```

Reviewed By: vitalybuka, MaskRay

Pull Request: llvm/llvm-project#83890
iclsrc pushed a commit that referenced this pull request Jul 4, 2024
…arallel fusion #94391 (#97607)"

This reverts commit edbc0e3.

Reason for rollback. ASAN complains about this PR:

==4320==ERROR: AddressSanitizer: heap-use-after-free on address 0x502000006cd8 at pc 0x55e2978d63cf bp 0x7ffe6431c2b0 sp 0x7ffe6431c2a8
READ of size 8 at 0x502000006cd8 thread T0
    #0 0x55e2978d63ce in map<llvm::MutableArrayRef<mlir::BlockArgument> &, llvm::MutableArrayRef<mlir::BlockArgument>, nullptr> mlir/include/mlir/IR/IRMapping.h:40:11
    #1 0x55e2978d63ce in mlir::createFused(mlir::LoopLikeOpInterface, mlir::LoopLikeOpInterface, mlir::RewriterBase&, std::__u::function<llvm::SmallVector<mlir::Value, 6u> (mlir::OpBuilder&, mlir::Location, llvm::ArrayRef<mlir::BlockArgument>)>, llvm::function_ref<void (mlir::RewriterBase&, mlir::LoopLikeOpInterface, mlir::LoopLikeOpInterface&, mlir::IRMapping)>) mlir/lib/Interfaces/LoopLikeInterface.cpp:156:11
    #2 0x55e2952a614b in mlir::fuseIndependentSiblingForLoops(mlir::scf::ForOp, mlir::scf::ForOp, mlir::RewriterBase&) mlir/lib/Dialect/SCF/Utils/Utils.cpp:1398:43
    #3 0x55e291480c6f in mlir::transform::LoopFuseSiblingOp::apply(mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) mlir/lib/Dialect/SCF/TransformOps/SCFTransformOps.cpp:482:17
    #4 0x55e29149ed5e in mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Model<mlir::transform::LoopFuseSiblingOp>::apply(mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Concept const*, mlir::Operation*, mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.h.inc:477:56
    #5 0x55e297494a60 in apply blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.cpp.inc:61:14
    #6 0x55e297494a60 in mlir::transform::TransformState::applyTransform(mlir::transform::TransformOpInterface) mlir/lib/Dialect/Transform/Interfaces/TransformInterfaces.cpp:953:48
    #7 0x55e294646a8d in applySequenceBlock(mlir::Block&, mlir::transform::FailurePropagationMode, mlir::transform::TransformState&, mlir::transform::TransformResults&) mlir/lib/Dialect/Transform/IR/TransformOps.cpp:1788:15
    #8 0x55e29464f927 in mlir::transform::NamedSequenceOp::apply(mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) mlir/lib/Dialect/Transform/IR/TransformOps.cpp:2155:10
    #9 0x55e2945d28ee in mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Model<mlir::transform::NamedSequenceOp>::apply(mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Concept const*, mlir::Operation*, mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.h.inc:477:56
    #10 0x55e297494a60 in apply blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.cpp.inc:61:14
    #11 0x55e297494a60 in mlir::transform::TransformState::applyTransform(mlir::transform::TransformOpInterface) mlir/lib/Dialect/Transform/Interfaces/TransformInterfaces.cpp:953:48
    #12 0x55e2974a5fe2 in mlir::transform::applyTransforms(mlir::Operation*, mlir::transform::TransformOpInterface, mlir::RaggedArray<llvm::PointerUnion<mlir::Operation*, mlir::Attribute, mlir::Value>> const&, mlir::transform::TransformOptions const&, bool) mlir/lib/Dialect/Transform/Interfaces/TransformInterfaces.cpp:2016:16
    #13 0x55e2945888d7 in mlir::transform::applyTransformNamedSequence(mlir::RaggedArray<llvm::PointerUnion<mlir::Operation*, mlir::Attribute, mlir::Value>>, mlir::transform::TransformOpInterface, mlir::ModuleOp, mlir::transform::TransformOptions const&) mlir/lib/Dialect/Transform/Transforms/TransformInterpreterUtils.cpp:234:10
    #14 0x55e294582446 in (anonymous namespace)::InterpreterPass::runOnOperation() mlir/lib/Dialect/Transform/Transforms/InterpreterPass.cpp:147:16
    #15 0x55e2978e93c6 in operator() mlir/lib/Pass/Pass.cpp:527:17
    #16 0x55e2978e93c6 in void llvm::function_ref<void ()>::callback_fn<mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int)::$_1>(long) llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12
    #17 0x55e2978e207a in operator() llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12
    #18 0x55e2978e207a in executeAction<mlir::PassExecutionAction, mlir::Pass &> mlir/include/mlir/IR/MLIRContext.h:275:7
    #19 0x55e2978e207a in mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int) mlir/lib/Pass/Pass.cpp:521:21
    #20 0x55e2978e5fbf in runPipeline mlir/lib/Pass/Pass.cpp:593:16
    #21 0x55e2978e5fbf in mlir::PassManager::runPasses(mlir::Operation*, mlir::AnalysisManager) mlir/lib/Pass/Pass.cpp:904:10
    #22 0x55e2978e5b65 in mlir::PassManager::run(mlir::Operation*) mlir/lib/Pass/Pass.cpp:884:60
    #23 0x55e291ebb460 in performActions(llvm::raw_ostream&, std::__u::shared_ptr<llvm::SourceMgr> const&, mlir::MLIRContext*, mlir::MlirOptMainConfig const&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:408:17
    #24 0x55e291ebabd9 in processBuffer mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:481:9
    #25 0x55e291ebabd9 in operator() mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:548:12
    #26 0x55e291ebabd9 in llvm::LogicalResult llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>::callback_fn<mlir::MlirOptMain(llvm::raw_ostream&, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&)::$_0>(long, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&) llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12
    #27 0x55e297b1cffe in operator() llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12
    #28 0x55e297b1cffe in mlir::splitAndProcessBuffer(std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef)::$_0::operator()(llvm::StringRef) const mlir/lib/Support/ToolUtilities.cpp:86:16
    #29 0x55e297b1c9c5 in interleave<const llvm::StringRef *, (lambda at mlir/lib/Support/ToolUtilities.cpp:79:23), (lambda at llvm/include/llvm/ADT/STLExtras.h:2147:49), void> llvm/include/llvm/ADT/STLExtras.h:2125:3
    #30 0x55e297b1c9c5 in interleave<llvm::SmallVector<llvm::StringRef, 8U>, (lambda at mlir/lib/Support/ToolUtilities.cpp:79:23), llvm::raw_ostream, llvm::StringRef> llvm/include/llvm/ADT/STLExtras.h:2147:3
    #31 0x55e297b1c9c5 in mlir::splitAndProcessBuffer(std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef) mlir/lib/Support/ToolUtilities.cpp:89:3
    #32 0x55e291eb0cf0 in mlir::MlirOptMain(llvm::raw_ostream&, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:551:10
    #33 0x55e291eb115c in mlir::MlirOptMain(int, char**, llvm::StringRef, llvm::StringRef, mlir::DialectRegistry&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:589:14
    #34 0x55e291eb15f8 in mlir::MlirOptMain(int, char**, llvm::StringRef, mlir::DialectRegistry&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:605:10
    #35 0x55e29130d1be in main mlir/tools/mlir-opt/mlir-opt.cpp:311:33
    #36 0x7fbcf3fff3d3 in __libc_start_main (/usr/grte/v5/lib64/libc.so.6+0x613d3) (BuildId: 9a996398ce14a94560b0c642eb4f6e94)
    #37 0x55e2912365a9 in _start /usr/grte/v5/debug-src/src/csu/../sysdeps/x86_64/start.S:120

0x502000006cd8 is located 8 bytes inside of 16-byte region [0x502000006cd0,0x502000006ce0)
freed by thread T0 here:
    #0 0x55e29130b7e2 in operator delete(void*, unsigned long) compiler-rt/lib/asan/asan_new_delete.cpp:155:3
    #1 0x55e2979eb657 in __libcpp_operator_delete<void *, unsigned long>
    #2 0x55e2979eb657 in __do_deallocate_handle_size<>
    #3 0x55e2979eb657 in __libcpp_deallocate
    #4 0x55e2979eb657 in deallocate
    #5 0x55e2979eb657 in deallocate
    #6 0x55e2979eb657 in operator()
    #7 0x55e2979eb657 in ~vector
    #8 0x55e2979eb657 in mlir::Block::~Block() mlir/lib/IR/Block.cpp:24:1
    #9 0x55e2979ebc17 in deleteNode llvm/include/llvm/ADT/ilist.h:42:39
    #10 0x55e2979ebc17 in erase llvm/include/llvm/ADT/ilist.h:205:5
    #11 0x55e2979ebc17 in erase llvm/include/llvm/ADT/ilist.h:209:39
    #12 0x55e2979ebc17 in mlir::Block::erase() mlir/lib/IR/Block.cpp:67:28
    #13 0x55e297aef978 in mlir::RewriterBase::eraseBlock(mlir::Block*) mlir/lib/IR/PatternMatch.cpp:245:10
    #14 0x55e297af0563 in mlir::RewriterBase::inlineBlockBefore(mlir::Block*, mlir::Block*, llvm::ilist_iterator<llvm::ilist_detail::node_options<mlir::Operation, false, false, void, false, void>, false, false>, mlir::ValueRange) mlir/lib/IR/PatternMatch.cpp:331:3
    #15 0x55e297af06d8 in mlir::RewriterBase::mergeBlocks(mlir::Block*, mlir::Block*, mlir::ValueRange) mlir/lib/IR/PatternMatch.cpp:341:3
    #16 0x55e297036608 in mlir::scf::ForOp::replaceWithAdditionalYields(mlir::RewriterBase&, mlir::ValueRange, bool, std::__u::function<llvm::SmallVector<mlir::Value, 6u> (mlir::OpBuilder&, mlir::Location, llvm::ArrayRef<mlir::BlockArgument>)> const&) mlir/lib/Dialect/SCF/IR/SCF.cpp:575:12
    #17 0x55e2970673ca in mlir::detail::LoopLikeOpInterfaceInterfaceTraits::Model<mlir::scf::ForOp>::replaceWithAdditionalYields(mlir::detail::LoopLikeOpInterfaceInterfaceTraits::Concept const*, mlir::Operation*, mlir::RewriterBase&, mlir::ValueRange, bool, std::__u::function<llvm::SmallVector<mlir::Value, 6u> (mlir::OpBuilder&, mlir::Location, llvm::ArrayRef<mlir::BlockArgument>)> const&) blaze-out/k8-opt-asan/bin/mlir/include/mlir/Interfaces/LoopLikeInterface.h.inc:658:56
    #18 0x55e2978d5feb in replaceWithAdditionalYields blaze-out/k8-opt-asan/bin/mlir/include/mlir/Interfaces/LoopLikeInterface.cpp.inc:105:14
    #19 0x55e2978d5feb in mlir::createFused(mlir::LoopLikeOpInterface, mlir::LoopLikeOpInterface, mlir::RewriterBase&, std::__u::function<llvm::SmallVector<mlir::Value, 6u> (mlir::OpBuilder&, mlir::Location, llvm::ArrayRef<mlir::BlockArgument>)>, llvm::function_ref<void (mlir::RewriterBase&, mlir::LoopLikeOpInterface, mlir::LoopLikeOpInterface&, mlir::IRMapping)>) mlir/lib/Interfaces/LoopLikeInterface.cpp:135:14
    #20 0x55e2952a614b in mlir::fuseIndependentSiblingForLoops(mlir::scf::ForOp, mlir::scf::ForOp, mlir::RewriterBase&) mlir/lib/Dialect/SCF/Utils/Utils.cpp:1398:43
    #21 0x55e291480c6f in mlir::transform::LoopFuseSiblingOp::apply(mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) mlir/lib/Dialect/SCF/TransformOps/SCFTransformOps.cpp:482:17
    #22 0x55e29149ed5e in mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Model<mlir::transform::LoopFuseSiblingOp>::apply(mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Concept const*, mlir::Operation*, mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.h.inc:477:56
    #23 0x55e297494a60 in apply blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.cpp.inc:61:14
    #24 0x55e297494a60 in mlir::transform::TransformState::applyTransform(mlir::transform::TransformOpInterface) mlir/lib/Dialect/Transform/Interfaces/TransformInterfaces.cpp:953:48
    #25 0x55e294646a8d in applySequenceBlock(mlir::Block&, mlir::transform::FailurePropagationMode, mlir::transform::TransformState&, mlir::transform::TransformResults&) mlir/lib/Dialect/Transform/IR/TransformOps.cpp:1788:15
    #26 0x55e29464f927 in mlir::transform::NamedSequenceOp::apply(mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) mlir/lib/Dialect/Transform/IR/TransformOps.cpp:2155:10
    #27 0x55e2945d28ee in mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Model<mlir::transform::NamedSequenceOp>::apply(mlir::transform::detail::TransformOpInterfaceInterfaceTraits::Concept const*, mlir::Operation*, mlir::transform::TransformRewriter&, mlir::transform::TransformResults&, mlir::transform::TransformState&) blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.h.inc:477:56
    #28 0x55e297494a60 in apply blaze-out/k8-opt-asan/bin/mlir/include/mlir/Dialect/Transform/Interfaces/TransformInterfaces.cpp.inc:61:14
    #29 0x55e297494a60 in mlir::transform::TransformState::applyTransform(mlir::transform::TransformOpInterface) mlir/lib/Dialect/Transform/Interfaces/TransformInterfaces.cpp:953:48
    #30 0x55e2974a5fe2 in mlir::transform::applyTransforms(mlir::Operation*, mlir::transform::TransformOpInterface, mlir::RaggedArray<llvm::PointerUnion<mlir::Operation*, mlir::Attribute, mlir::Value>> const&, mlir::transform::TransformOptions const&, bool) mlir/lib/Dialect/Transform/Interfaces/TransformInterfaces.cpp:2016:16
    #31 0x55e2945888d7 in mlir::transform::applyTransformNamedSequence(mlir::RaggedArray<llvm::PointerUnion<mlir::Operation*, mlir::Attribute, mlir::Value>>, mlir::transform::TransformOpInterface, mlir::ModuleOp, mlir::transform::TransformOptions const&) mlir/lib/Dialect/Transform/Transforms/TransformInterpreterUtils.cpp:234:10
    #32 0x55e294582446 in (anonymous namespace)::InterpreterPass::runOnOperation() mlir/lib/Dialect/Transform/Transforms/InterpreterPass.cpp:147:16
    #33 0x55e2978e93c6 in operator() mlir/lib/Pass/Pass.cpp:527:17
    #34 0x55e2978e93c6 in void llvm::function_ref<void ()>::callback_fn<mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int)::$_1>(long) llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12
    #35 0x55e2978e207a in operator() llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12
    #36 0x55e2978e207a in executeAction<mlir::PassExecutionAction, mlir::Pass &> mlir/include/mlir/IR/MLIRContext.h:275:7
    #37 0x55e2978e207a in mlir::detail::OpToOpPassAdaptor::run(mlir::Pass*, mlir::Operation*, mlir::AnalysisManager, bool, unsigned int) mlir/lib/Pass/Pass.cpp:521:21
    #38 0x55e2978e5fbf in runPipeline mlir/lib/Pass/Pass.cpp:593:16
    #39 0x55e2978e5fbf in mlir::PassManager::runPasses(mlir::Operation*, mlir::AnalysisManager) mlir/lib/Pass/Pass.cpp:904:10
    #40 0x55e2978e5b65 in mlir::PassManager::run(mlir::Operation*) mlir/lib/Pass/Pass.cpp:884:60
    #41 0x55e291ebb460 in performActions(llvm::raw_ostream&, std::__u::shared_ptr<llvm::SourceMgr> const&, mlir::MLIRContext*, mlir::MlirOptMainConfig const&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:408:17
    #42 0x55e291ebabd9 in processBuffer mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:481:9
    #43 0x55e291ebabd9 in operator() mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:548:12
    #44 0x55e291ebabd9 in llvm::LogicalResult llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>::callback_fn<mlir::MlirOptMain(llvm::raw_ostream&, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&)::$_0>(long, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&) llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12
    #45 0x55e297b1cffe in operator() llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12
    #46 0x55e297b1cffe in mlir::splitAndProcessBuffer(std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef)::$_0::operator()(llvm::StringRef) const mlir/lib/Support/ToolUtilities.cpp:86:16
    #47 0x55e297b1c9c5 in interleave<const llvm::StringRef *, (lambda at mlir/lib/Support/ToolUtilities.cpp:79:23), (lambda at llvm/include/llvm/ADT/STLExtras.h:2147:49), void> llvm/include/llvm/ADT/STLExtras.h:2125:3
    #48 0x55e297b1c9c5 in interleave<llvm::SmallVector<llvm::StringRef, 8U>, (lambda at mlir/lib/Support/ToolUtilities.cpp:79:23), llvm::raw_ostream, llvm::StringRef> llvm/include/llvm/ADT/STLExtras.h:2147:3
    #49 0x55e297b1c9c5 in mlir::splitAndProcessBuffer(std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef) mlir/lib/Support/ToolUtilities.cpp:89:3
    #50 0x55e291eb0cf0 in mlir::MlirOptMain(llvm::raw_ostream&, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:551:10
    #51 0x55e291eb115c in mlir::MlirOptMain(int, char**, llvm::StringRef, llvm::StringRef, mlir::DialectRegistry&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:589:14

previously allocated by thread T0 here:
    #0 0x55e29130ab5d in operator new(unsigned long) compiler-rt/lib/asan/asan_new_delete.cpp:86:3
    #1 0x55e2979ed5d4 in __libcpp_operator_new<unsigned long>
    #2 0x55e2979ed5d4 in __libcpp_allocate
    #3 0x55e2979ed5d4 in allocate
    #4 0x55e2979ed5d4 in __allocate_at_least<std::__u::allocator<mlir::BlockArgument> >
    #5 0x55e2979ed5d4 in __split_buffer
    #6 0x55e2979ed5d4 in mlir::BlockArgument* std::__u::vector<mlir::BlockArgument, std::__u::allocator<mlir::BlockArgument>>::__push_back_slow_path<mlir::BlockArgument const&>(mlir::BlockArgument const&)
    #7 0x55e2979ec0f2 in push_back
    #8 0x55e2979ec0f2 in mlir::Block::addArgument(mlir::Type, mlir::Location) mlir/lib/IR/Block.cpp:154:13
    #9 0x55e29796e457 in parseRegionBody mlir/lib/AsmParser/Parser.cpp:2172:34
    #10 0x55e29796e457 in (anonymous namespace)::OperationParser::parseRegion(mlir::Region&, llvm::ArrayRef<mlir::OpAsmParser::Argument>, bool) mlir/lib/AsmParser/Parser.cpp:2121:7
    #11 0x55e29796b25e in (anonymous namespace)::CustomOpAsmParser::parseRegion(mlir::Region&, llvm::ArrayRef<mlir::OpAsmParser::Argument>, bool) mlir/lib/AsmParser/Parser.cpp:1785:16
    #12 0x55e297035742 in mlir::scf::ForOp::parse(mlir::OpAsmParser&, mlir::OperationState&) mlir/lib/Dialect/SCF/IR/SCF.cpp:521:14
    #13 0x55e291322c18 in llvm::ParseResult llvm::detail::UniqueFunctionBase<llvm::ParseResult, mlir::OpAsmParser&, mlir::OperationState&>::CallImpl<llvm::ParseResult (*)(mlir::OpAsmParser&, mlir::OperationState&)>(void*, mlir::OpAsmParser&, mlir::OperationState&) llvm/include/llvm/ADT/FunctionExtras.h:220:12
    #14 0x55e29795bea3 in operator() llvm/include/llvm/ADT/FunctionExtras.h:384:12
    #15 0x55e29795bea3 in callback_fn<llvm::unique_function<llvm::ParseResult (mlir::OpAsmParser &, mlir::OperationState &)> > llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12
    #16 0x55e29795bea3 in operator() llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12
    #17 0x55e29795bea3 in parseOperation mlir/lib/AsmParser/Parser.cpp:1521:9
    #18 0x55e29795bea3 in parseCustomOperation mlir/lib/AsmParser/Parser.cpp:2017:19
    #19 0x55e29795bea3 in (anonymous namespace)::OperationParser::parseOperation() mlir/lib/AsmParser/Parser.cpp:1174:10
    #20 0x55e297971d20 in parseBlockBody mlir/lib/AsmParser/Parser.cpp:2296:9
    #21 0x55e297971d20 in (anonymous namespace)::OperationParser::parseBlock(mlir::Block*&) mlir/lib/AsmParser/Parser.cpp:2226:12
    #22 0x55e29796e4f5 in parseRegionBody mlir/lib/AsmParser/Parser.cpp:2184:7
    #23 0x55e29796e4f5 in (anonymous namespace)::OperationParser::parseRegion(mlir::Region&, llvm::ArrayRef<mlir::OpAsmParser::Argument>, bool) mlir/lib/AsmParser/Parser.cpp:2121:7
    #24 0x55e29796b25e in (anonymous namespace)::CustomOpAsmParser::parseRegion(mlir::Region&, llvm::ArrayRef<mlir::OpAsmParser::Argument>, bool) mlir/lib/AsmParser/Parser.cpp:1785:16
    #25 0x55e29796b2cf in (anonymous namespace)::CustomOpAsmParser::parseOptionalRegion(mlir::Region&, llvm::ArrayRef<mlir::OpAsmParser::Argument>, bool) mlir/lib/AsmParser/Parser.cpp:1796:12
    #26 0x55e2978d89ff in mlir::function_interface_impl::parseFunctionOp(mlir::OpAsmParser&, mlir::OperationState&, bool, mlir::StringAttr, llvm::function_ref<mlir::Type (mlir::Builder&, llvm::ArrayRef<mlir::Type>, llvm::ArrayRef<mlir::Type>, mlir::function_interface_impl::VariadicFlag, std::__u::basic_string<char, std::__u::char_traits<char>, std::__u::allocator<char>>&)>, mlir::StringAttr, mlir::StringAttr) mlir/lib/Interfaces/FunctionImplementation.cpp:232:14
    #27 0x55e2969ba41d in mlir::func::FuncOp::parse(mlir::OpAsmParser&, mlir::OperationState&) mlir/lib/Dialect/Func/IR/FuncOps.cpp:203:10
    #28 0x55e291322c18 in llvm::ParseResult llvm::detail::UniqueFunctionBase<llvm::ParseResult, mlir::OpAsmParser&, mlir::OperationState&>::CallImpl<llvm::ParseResult (*)(mlir::OpAsmParser&, mlir::OperationState&)>(void*, mlir::OpAsmParser&, mlir::OperationState&) llvm/include/llvm/ADT/FunctionExtras.h:220:12
    #29 0x55e29795bea3 in operator() llvm/include/llvm/ADT/FunctionExtras.h:384:12
    #30 0x55e29795bea3 in callback_fn<llvm::unique_function<llvm::ParseResult (mlir::OpAsmParser &, mlir::OperationState &)> > llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12
    #31 0x55e29795bea3 in operator() llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12
    #32 0x55e29795bea3 in parseOperation mlir/lib/AsmParser/Parser.cpp:1521:9
    #33 0x55e29795bea3 in parseCustomOperation mlir/lib/AsmParser/Parser.cpp:2017:19
    #34 0x55e29795bea3 in (anonymous namespace)::OperationParser::parseOperation() mlir/lib/AsmParser/Parser.cpp:1174:10
    #35 0x55e297959b78 in parse mlir/lib/AsmParser/Parser.cpp:2725:20
    #36 0x55e297959b78 in mlir::parseAsmSourceFile(llvm::SourceMgr const&, mlir::Block*, mlir::ParserConfig const&, mlir::AsmParserState*, mlir::AsmParserCodeCompleteContext*) mlir/lib/AsmParser/Parser.cpp:2785:41
    #37 0x55e29790d5c2 in mlir::parseSourceFile(std::__u::shared_ptr<llvm::SourceMgr> const&, mlir::Block*, mlir::ParserConfig const&, mlir::LocationAttr*) mlir/lib/Parser/Parser.cpp:46:10
    #38 0x55e291ebbfe2 in parseSourceFile<mlir::ModuleOp, const std::__u::shared_ptr<llvm::SourceMgr> &> mlir/include/mlir/Parser/Parser.h:159:14
    #39 0x55e291ebbfe2 in parseSourceFile<mlir::ModuleOp> mlir/include/mlir/Parser/Parser.h:189:10
    #40 0x55e291ebbfe2 in mlir::parseSourceFileForTool(std::__u::shared_ptr<llvm::SourceMgr> const&, mlir::ParserConfig const&, bool) mlir/include/mlir/Tools/ParseUtilities.h:31:12
    #41 0x55e291ebb263 in performActions(llvm::raw_ostream&, std::__u::shared_ptr<llvm::SourceMgr> const&, mlir::MLIRContext*, mlir::MlirOptMainConfig const&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:383:33
    #42 0x55e291ebabd9 in processBuffer mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:481:9
    #43 0x55e291ebabd9 in operator() mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:548:12
    #44 0x55e291ebabd9 in llvm::LogicalResult llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>::callback_fn<mlir::MlirOptMain(llvm::raw_ostream&, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&)::$_0>(long, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&) llvm/include/llvm/ADT/STLFunctionalExtras.h:45:12
    #45 0x55e297b1cffe in operator() llvm/include/llvm/ADT/STLFunctionalExtras.h:68:12
    #46 0x55e297b1cffe in mlir::splitAndProcessBuffer(std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef)::$_0::operator()(llvm::StringRef) const mlir/lib/Support/ToolUtilities.cpp:86:16
    #47 0x55e297b1c9c5 in interleave<const llvm::StringRef *, (lambda at mlir/lib/Support/ToolUtilities.cpp:79:23), (lambda at llvm/include/llvm/ADT/STLExtras.h:2147:49), void> llvm/include/llvm/ADT/STLExtras.h:2125:3
    #48 0x55e297b1c9c5 in interleave<llvm::SmallVector<llvm::StringRef, 8U>, (lambda at mlir/lib/Support/ToolUtilities.cpp:79:23), llvm::raw_ostream, llvm::StringRef> llvm/include/llvm/ADT/STLExtras.h:2147:3
    #49 0x55e297b1c9c5 in mlir::splitAndProcessBuffer(std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::function_ref<llvm::LogicalResult (std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, llvm::raw_ostream&)>, llvm::raw_ostream&, llvm::StringRef, llvm::StringRef) mlir/lib/Support/ToolUtilities.cpp:89:3
    #50 0x55e291eb0cf0 in mlir::MlirOptMain(llvm::raw_ostream&, std::__u::unique_ptr<llvm::MemoryBuffer, std::__u::default_delete<llvm::MemoryBuffer>>, mlir::DialectRegistry&, mlir::MlirOptMainConfig const&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:551:10
    #51 0x55e291eb115c in mlir::MlirOptMain(int, char**, llvm::StringRef, llvm::StringRef, mlir::DialectRegistry&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:589:14
    #52 0x55e291eb15f8 in mlir::MlirOptMain(int, char**, llvm::StringRef, mlir::DialectRegistry&) mlir/lib/Tools/mlir-opt/MlirOptMain.cpp:605:10
    #53 0x55e29130d1be in main mlir/tools/mlir-opt/mlir-opt.cpp:311:33
    #54 0x7fbcf3fff3d3 in __libc_start_main (/usr/grte/v5/lib64/libc.so.6+0x613d3) (BuildId: 9a996398ce14a94560b0c642eb4f6e94)
    #55 0x55e2912365a9 in _start /usr/grte/v5/debug-src/src/csu/../sysdeps/x86_64/start.S:120

SUMMARY: AddressSanitizer: heap-use-after-free mlir/include/mlir/IR/IRMapping.h:40:11 in map<llvm::MutableArrayRef<mlir::BlockArgument> &, llvm::MutableArrayRef<mlir::BlockArgument>, nullptr>
Shadow bytes around the buggy address:
  0x502000006a00: fa fa 00 fa fa fa 00 00 fa fa 00 fa fa fa 00 fa
  0x502000006a80: fa fa 00 fa fa fa 00 00 fa fa 00 00 fa fa 00 00
  0x502000006b00: fa fa 00 00 fa fa 00 00 fa fa 00 fa fa fa 00 fa
  0x502000006b80: fa fa 00 fa fa fa 00 fa fa fa 00 00 fa fa 00 00
  0x502000006c00: fa fa 00 00 fa fa 00 00 fa fa 00 00 fa fa fd fa
=>0x502000006c80: fa fa fd fa fa fa fd fd fa fa fd[fd]fa fa fd fd
  0x502000006d00: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x502000006d80: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x502000006e00: fa fa 00 fa fa fa 00 fa fa fa 00 00 fa fa 00 fa
  0x502000006e80: fa fa 00 fa fa fa 00 00 fa fa 00 fa fa fa 00 fa
  0x502000006f00: fa fa 00 fa fa fa 00 fa fa fa 00 fa fa fa 00 fa
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
==4320==ABORTING
iclsrc pushed a commit that referenced this pull request Nov 11, 2024
… depobj construct (#114221)

A codegen crash is occurring when a depend object was initialized with
omp_all_memory in the depobj directive.
llvm/llvm-project#114214
The root cause of issue looks to be the improper handling of the
dependency list when omp_all_memory was specified.

The change introduces the use of OMPTaskDataTy to manage dependencies.
The buildDependences function is called to construct the dependency
list, and the list is iterated over to emit and store the dependencies.

Reduced Test Case : 
```
#include <omp.h>

int main()

{ omp_depend_t obj; #pragma omp depobj(obj) depend(inout: omp_all_memory) }
```

```
 #1 0x0000000003de6623 SignalHandler(int) Signals.cpp:0:0
 #2 0x00007f8e4a6b990f (/lib64/libpthread.so.0+0x1690f)
 #3 0x00007f8e4a117d2a raise (/lib64/libc.so.6+0x4ad2a)
 #4 0x00007f8e4a1193e4 abort (/lib64/libc.so.6+0x4c3e4)
 #5 0x00007f8e4a10fc69 __assert_fail_base (/lib64/libc.so.6+0x42c69)
 #6 0x00007f8e4a10fcf1 __assert_fail (/lib64/libc.so.6+0x42cf1)
 #7 0x0000000004114367 clang::CodeGen::CodeGenFunction::EmitOMPDepobjDirective(clang::OMPDepobjDirective const&) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x4114367)
 #8 0x00000000040f8fac clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*, llvm::ArrayRef<clang::Attr const*>) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x40f8fac)
 #9 0x00000000040ff4fb clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x40ff4fb)
#10 0x00000000041847b2 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x41847b2)
#11 0x0000000004199e4a clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x4199e4a)
#12 0x00000000041f7b9d clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x41f7b9d)
#13 0x00000000041f16a3 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x41f16a3)
#14 0x00000000041fd954 clang::CodeGen::CodeGenModule::EmitDeferred() (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x41fd954)
#15 0x0000000004200277 clang::CodeGen::CodeGenModule::Release() (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x4200277)
#16 0x00000000046b6a49 (anonymous namespace)::CodeGeneratorImpl::HandleTranslationUnit(clang::ASTContext&) ModuleBuilder.cpp:0:0
#17 0x00000000046b4cb6 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x46b4cb6)
#18 0x0000000006204d5c clang::ParseAST(clang::Sema&, bool, bool) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x6204d5c)
#19 0x000000000496b278 clang::FrontendAction::Execute() (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x496b278)
#20 0x00000000048dd074 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x48dd074)
#21 0x0000000004a38092 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0x4a38092)
#22 0x0000000000fd4e9c cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0xfd4e9c)
#23 0x0000000000fcca73 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#24 0x0000000000fd140c clang_main(int, char**, llvm::ToolContext const&) (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0xfd140c)
#25 0x0000000000ee2ef3 main (/opt/cray/pe/cce/18.0.1/cce-clang/x86_64/bin/clang-18+0xee2ef3)
#26 0x00007f8e4a10224c __libc_start_main (/lib64/libc.so.6+0x3524c)
#27 0x0000000000fcaae9 _start /home/abuild/rpmbuild/BUILD/glibc-2.31/csu/../sysdeps/x86_64/start.S:120:0
clang: error: unable to execute command: Aborted
```

---------

Co-authored-by: Chandra Ghale <[email protected]>
iclsrc pushed a commit that referenced this pull request Nov 19, 2024
…onger cause a crash (#116569)

This PR fixes a bug introduced by #110199, which causes any half float
argument to crash the compiler on MIPS64.

Currently compiling this bit of code with `llc -mtriple=mips64`: 
```
define void @half_args(half %a) nounwind {
entry:
        ret void
}
```

Crashes with the following log:
```
LLVM ERROR: unable to allocate function argument #0
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.	Program arguments: llc -mtriple=mips64
1.	Running pass 'Function Pass Manager' on module '<stdin>'.
2.	Running pass 'MIPS DAG->DAG Pattern Instruction Selection' on function '@half_args'
 #0 0x000055a3a4013df8 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x32d0df8)
 #1 0x000055a3a401199e llvm::sys::RunSignalHandlers() (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x32ce99e)
 #2 0x000055a3a40144a8 SignalHandler(int) Signals.cpp:0:0
 #3 0x00007f00bde558c0 __restore_rt libc_sigaction.c:0:0
 #4 0x00007f00bdea462c __pthread_kill_implementation ./nptl/pthread_kill.c:44:76
 #5 0x00007f00bde55822 gsignal ./signal/../sysdeps/posix/raise.c:27:6
 #6 0x00007f00bde3e4af abort ./stdlib/abort.c:81:7
 #7 0x000055a3a3f80e3c llvm::report_fatal_error(llvm::Twine const&, bool) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x323de3c)
 #8 0x000055a3a2e20dfa (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x20dddfa)
 #9 0x000055a3a2a34e20 llvm::MipsTargetLowering::LowerFormalArguments(llvm::SDValue, unsigned int, bool, llvm::SmallVectorImpl<llvm::ISD::InputArg> const&, llvm::SDLoc const&, llvm::SelectionDAG&, llvm::SmallVectorImpl<llvm::SDValue>&) const MipsISelLowering.cpp:0:0
#10 0x000055a3a3d896a9 llvm::SelectionDAGISel::LowerArguments(llvm::Function const&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x30466a9)
#11 0x000055a3a3e0b3ec llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x30c83ec)
#12 0x000055a3a3e09e21 llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x30c6e21)
#13 0x000055a3a2aae1ca llvm::MipsDAGToDAGISel::runOnMachineFunction(llvm::MachineFunction&) MipsISelDAGToDAG.cpp:0:0
#14 0x000055a3a3e07706 llvm::SelectionDAGISelLegacy::runOnMachineFunction(llvm::MachineFunction&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x30c4706)
#15 0x000055a3a3051ed6 llvm::MachineFunctionPass::runOnFunction(llvm::Function&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x230eed6)
#16 0x000055a3a35a3ec9 llvm::FPPassManager::runOnFunction(llvm::Function&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x2860ec9)
#17 0x000055a3a35ac3b2 llvm::FPPassManager::runOnModule(llvm::Module&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x28693b2)
#18 0x000055a3a35a499c llvm::legacy::PassManagerImpl::run(llvm::Module&) (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x286199c)
#19 0x000055a3a262abbb main (/home/davide/Ps2/rps2-tools/prefix/bin/llc+0x18e7bbb)
#20 0x00007f00bde3fc4c __libc_start_call_main ./csu/../sysdeps/nptl/libc_start_call_main.h:74:3
#21 0x00007f00bde3fd05 call_init ./csu/../csu/libc-start.c:128:20
#22 0x00007f00bde3fd05 __libc_start_main@GLIBC_2.2.5 ./csu/../csu/libc-start.c:347:5
#23 0x000055a3a2624921 _start /builddir/glibc-2.39/csu/../sysdeps/x86_64/start.S:117:0
```

This is caused by the fact that after the change, `f16`s are no longer
lowered as `f32`s in calls.

Two possible fixes are available:
- Update calling conventions to properly support passing `f16` as
integers.
- Update `useFPRegsForHalfType()` to return `true` so that `f16` are
still kept in `f32` registers, as before #110199.

This PR implements the first solution to not introduce any more ABI
changes as #110199 already did.

As of what is the correct ABI for halfs, I don't think there is a
correct answer. GCC doesn't support halfs on MIPS, and I couldn't find
any information on old MIPS ABI manuals either.
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