Changes

[lld][MachO] Add support for LC_DATA_IN_CODE

Add first bits for emitting LC_DATA_IN_CODE.

Test plan: make check-lld-macho

Differential revision: https://reviews.llvm.org/D103006

[libc++][ci] Enable modules in the Runtimes build

The runtimes build has assertions enabled, which is necessary to catch
some of the modules-related issues we've been seeing recently. This
patch enables testing with modules in the runtimes build so as to cover
those cases.

In the future, a better solution would be to systematically use versions
of Clang that have assertions enabled. However, the Clangs we release
currently don't have assertions enabled by default, which causes a
challenge for the CI (we could try to build our own Clang from ToT with
assertions in the CI, but that poses some problems).

Differential Revision: https://reviews.llvm.org/D104252

Do not merge LocalInstantiationScope for template specialization

A lambda in a function template may be recursively instantiated. The recursive
lambda will cause a lambda function instantiated multiple times, one inside another.
The inner LocalInstantiationScope should not be marked as MergeWithParentScope
since it already has references to locals properly substituted, otherwise it causes
assertion due to the check for duplicate locals in merged LocalInstantiationScope.

Reviewed by: Richard Smith

Differential Revision: https://reviews.llvm.org/D98068

[lld][MachO] Fix UB after D103006

ubsan detected:
lld/MachO/SyntheticSections.cpp:636:15: runtime error: null pointer
passed as argument 2, which is declared to never be null

[NFC][hwasan] Fix "implicitly declaring library function"

[X86] Use EVT::getVectorVT instead of changeVectorElementType in reduceVMULWidth.

Changing vector element type doesn't work for v6i32->v6i16 now
that v6i32 is an MVT and v6i16 is not.

I would like to fix this in changeVectorElementType, but you
need a LLVMContext to call getVectorVT which we can't get from
an MVT.

Fixes PR50709.

[NFC] This is a test commit to check commit access.

Add full stop at the end of comment.

[AMDGPU][Libomptarget] Drop dead code related to g_atl_machine

This patch includes some changes which deletes the code accessing
g_atl_machine global. Some accesses related to memory_pools are
still remaining.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D103813

Revert "[NFC] This is a test commit to check commit access."

This reverts commit b4d40e19def8c2e1a77ae30b5ac16751d1c461f7.

[ORC-RT] Fix void function handling in the WrapperFunction utility.

Handlers returning void previously caused compile errors. Fix that by
substituting SPSEmpty placeholder values.

[Debug-Info][CodeView] Fix GUID string generation for MSVC generated objects.

This patch is to address https://bugs.llvm.org/show_bug.cgi?id=50459.
  YAML:455:28: error: GUID strings are 38 characters long

The valid format for a GUID is {XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
where X is a hex digit (0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F).
The length of the individual components must be: 8, 4, 4, 4, 12.

For some cases, the converted string generated by obj2yaml, does not
comply with those lengths. yaml2obj checks that the GUID string must
be 38 characters including the dashes and braces.

Reviewed By: amccarth

Differential Revision: https://reviews.llvm.org/D103089

[gn build] Port d0a5d8611935

Support buffers in LinalgFoldUnitExtentDims

This doesn't add any canonicalizations, but executes the same
simplification on bufferSemantic linalg.generic ops by using
linalg::ReshapeOp instead of linalg::TensorReshapeOp.

Differential Revision: https://reviews.llvm.org/D103513

[libc] Add a set of elementary operations

Resubmission of D100646 now making sure that we handle cases were `__builtin_memcpy_inline` is not available.

Original commit message:
Each of these elementary operations can be assembled to support higher order constructs (Overlapping access, Loop, Aligned Loop).
The patch does not compile yet as it depends on other ones (D100571, D100631) but it allows to get the conversation started.

A self-contained version of this code is available at https://godbolt.org/z/e1x6xdaxM

Revert "[libc] Add a set of elementary operations"

This reverts commit 454d92ac3b3b13f5c8b3f57e03b2d93f0cf60738.

[builtins] Allow compiling the builtins without libc headers

When compiled with -ffreestanding, we should not assume that headers
declaring functions such as abort() are available. While the compiler may
still emit calls to those functions [1], we should not require the headers
to build compiler-rt since that can result in a cyclic dependency graph:
The compiler-rt functions might be required to build libc.so, but the libc
headers such as stdlib.h might only be available once libc has been built.

[1] From https://gcc.gnu.org/onlinedocs/gcc/Standards.html:
GCC requires the freestanding environment provide memcpy, memmove,
memset and memcmp. Finally, if __builtin_trap is used, and the target
does not implement the trap pattern, then GCC emits a call to abort.

Reviewed By: phosek

Differential Revision: https://reviews.llvm.org/D103876

[IR] Remove forward declaration of GraphTraits from Type.h

This has been unnecessary since r352353 removed GraphTraits
specializations for Type, except that a couple of other headers were
accidentally relying on this declaration.

Differential Revision: https://reviews.llvm.org/D104119

[mlir][linalg] Fold linalg.pad_tensor if src type == result type

Fold PadTensorOp to source if source type and result type have static shape and are equal.

Differential Revision: https://reviews.llvm.org/D103778

[clang-format] distinguish function type casts after 21c18d5a04316891110cecc2bf37ce51533decba

https://github.com/llvm/llvm-project/commit/21c18d5a04316891110cecc2bf37ce51533decba
improved the detection of multiplication in function call argument lists,
but unintentionally regressed the handling of function type casts (there
were no tests covering those).
This patch improves the detection of function type casts and adds a few tests.

Reviewed By: HazardyKnusperkeks

Differential Revision: https://reviews.llvm.org/D104209

[analyzer] Refactor StoreSiteFinder and extract DefaultStoreHandler

After this patch, custom StoreHandlers will also work as expected.

Differential Revision: https://reviews.llvm.org/D103644

[analyzer] Extract ControlDependencyHandler

Differential Revision: https://reviews.llvm.org/D103677

[analyzer] Extract NilReceiverHandler

Differential Revision: https://reviews.llvm.org/D103902

[analyzer] Extract ArrayIndexHandler

One interesting problem was discovered here.  When we do interrupt
Tracker's track flow, we want to interrupt only it and not all the
other flows recursively.

Differential Revision: https://reviews.llvm.org/D103914

[analyzer] Extract InterestingLValueHandler

Differential Revision: https://reviews.llvm.org/D103917

[analyzer] Extract InlinedFunctionCallHandler

Differential Revision: https://reviews.llvm.org/D103961

[analyzer] Simplify the process of producing notes for stores

Differential Revision: https://reviews.llvm.org/D104046

Fix Windows builders after 244601f4720d9cda6e81ea1908f3ce905a4bcb0e

Apparently __builtin_abort() is not supported when targetting Windows.
This should fix the following builder errors:
clang_rt.builtins-x86_64.lib(int_util.c.obj) : error LNK2019: unresolved
external symbol __builtin_abort referenced in function __compilerrt_abort_impl

[MCA][InstrBuilder] Check for the presence of flag VariadicOpsAreDefs.

This patch fixes the logic that checks for variadic register definitions,

Before llvm-svn 348114 (commit 4cf35b4ab0b), it was not possible to explicitly
mark variadic operands as definitions. By default, variadic operands of an
MCInst were always assumed to be uses. A number of had-hoc checks were
introduced in the InstrBuilder to fix the processing of variadic register
operands of ARM ldm/stm variants.

This patch simply replaces those old (and buggy) checks with a much simpler (and
correct) check for MCID::Flag::VariadicOpsAreDefs.

[analyzer] Decouple NoteTag from its Factory

This allows us to create other types of tags that carry useful
bits of information alongside.

Differential Revision: https://reviews.llvm.org/D104135

[X86] Schedule-model second (mask) output of GATHER instruction

Much like `mulx`'s `WriteIMulH`, there are two outputs of
AVX2 GATHER instructions. This was changed back in rL160110,
but the sched model change wasn't present.

So right now, for sched models that are marked as complete
(`znver3` only now), codegen'ning `GATHER` results in a crash:
```
DefIdx 1 exceeds machine model writes for early-clobber renamable $ymm3, dead early-clobber renamable $ymm2 = VPGATHERDDYrm killed renamable $ymm3(tied-def 0), undef renamable $rax, 4, renamable $ymm0, 0, $noreg, killed renamable $ymm2(tied-def 1) :: (load 32, align 1)
```
https://godbolt.org/z/Ks7zW7WGh

I'm guessing we need to deal with this like we deal with `WriteIMulH`.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D104205

[lldb] Fix libstdc++ 11's std::unique_ptr affecting LLDB testsuite TestDataFormatterStdUniquePtr.py

libstdc++ since version 11 has a conditional compilation based on
[[no_unique_address]] availability whether one element is either
inherited or put there as a field with [[no_unique_address]].

The code comment is by teemperor.

Reviewed By: teemperor

Differential Revision: https://reviews.llvm.org/D104283