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[asan] Adjust interception compatibility for AIX (#131870)

Adjust asan interceptor compatbility for AIX. AIX uses dlsym to retrieve
addresses of exported functions. However, some functions in libc.a, such
as memcpy, are not exported, so we currently have a limitation in
retrieving these addresses.

Issue: https://github.com/llvm/llvm-project/issues/138916

[SLPVectorizer] Widen rt stride loads (#162336)

Suppose we are given pointers of the form: `%b + x * %s + y * %c_i`
where `%c_i`s are constants and %s is a run-time fixed value.
If the pointers can be rearranged as follows:

```
 %b + 0 * %s + 0
 %b + 0 * %s + 1
 %b + 0 * %s + 2
 ...
 %b + 0 * %s + w

 %b + 1 * %s + 0
 %b + 1 * %s + 1
 %b + 1 * %s + 2
 ...
 %b + 1 * %s + w
 ...

    [5 lines not shown]

Revert "[InstCombine] Support DemandElts in SimplifyDemandedFPClass" (#174242)

Reverts llvm/llvm-project#174176

Revert to unblock bots.
https://lab.llvm.org/buildbot/#/builders/123/builds/32907

[SLP][NFC]Add a test with the leading non-instruction in sores, which cannot be handled as copyable

[mlir][Python] port dialect extensions to use core PyConcreteType, PyConcreteAttribute

[mlir][Python] move IRTypes and IRAttributes to public headers

[mlir][Python] create MLIRPythonSupport

Revert "[InstCombine] Support DemandElts in SimplifyDemandedFPClass (#174176)"

This reverts commit 3c9d46ae338ea39f638342ac0e6f09d1cd8d10fa.

[TableGen] Remove TypeInfer::isConcrete/getConcrete. NFC (#174235)

These don't use any state from TypeInfer and only wrap methods in
TypeSetByHwMode. We can use the TypeSetByHwMode methods directly.

[OpenMP] Fix member type name in LooprangeT

The second parameter to the `looprange` clause is "count", nor "end".

[clang-doc] Add friends to class template (#173960)

This patch also allows comments to be associated with friend
declarations. Currently, it seems like the comments for friend `RecordDecl`
are taken from the actual class declaration, while a friend
function's comments are taken from the actual `friend` declaration.

[mlir][Python] port dialect extensions to use core PyConcreteType, PyConcreteAttribute

[VPlan] Simplify ~VPDef (NFCI).

Slightly simplify ~VPDef to avoid setting Def to nullptr, which is done
when remove the VPValue from VPDef, via VPValue's destructor.

Also use to_vector() instead of make_early_inc_range; as this is a
vector that may get modified, to_vector is appropriate.

[mlir][Python] port dialect extensions to use core PyConcreteType, PyConcreteAttribute

[clang-doc] Add friends to class template

This patch also allows comments to be associated with friend
declarations. Currently, it seems like the comments for friend `RecordDecl`
are taken from the actual class declaration, while a friend
function's comments are taken from the actual `friend` declaration.

[clang-doc] Add nested records to class template (#173959)

Nested records already had some tags, but they weren't
compatible with the current JSON scheme.

[mlir][Python] port dialect extensions to use core PyConcreteType, PyConcreteAttribute

[mlir][Python] move IRTypes and IRAttributes to public headers

fix after rebase

[mlir][Python] create MLIRPythonSupport

fix after rebase

Merge branch 'main' into users/evelez7/clang-doc-nested-records

fix after rebase

[gn build] Port 92f16356340d

[gn build] Port 7c0420dc8484

[-Wunsafe-buffer-usage] Add check for custom printf/scanf functions (#173096)

This commit adds support for functions annotated with
`__attribute__((__format__(__printf__, ...)))` (or `__scanf__`). These
functions will be treated the same way as printf/scanf functions in the
standard C library by `-Wunsafe-buffer-usage`

rdar://143233737

[SelectionDAG] Fix operand of BRCOND in visitSPDescriptorParent (#174230)

The first operand should be a chain, but `GuardVal.getOperand(0)` isn't
always a chain (i.e. if `TLI.emitStackGuardXorFP()` is called). Use
`getControlRoot()` instead like in other places when creating terminator
nodes.

Extracted from #168421.

[TableGen] Use TreePatternNode::getSimpleType instead of getType. NFC (#174231)

These were the only uses of getType. Both of these calls are after
HwMode has been expanded so we can use getSimpleType like other code.

Remove getType since it is now unused.

While there, simplify the hasBFloatType to use getScalarType for the
scalar and vector case.

gate standalone

fix after rebase

move impls