Commit 83c81c0a enabled Fix-Its for top-level
expressions which change the error message of this test here as Clang comes
up with a strange Fix-It for this expression. This patch just changes the
test to declare a void variable so that Clang doesn't see a way to
recover with a Fix-It and change the error message.

We are able to reduce `-DBITS=32/64` to reduce this test case.
I've rewrote the comments we had to generalize them and
fix wrong computations they contained.

Differential revision: https://reviews.llvm.org/D76924

If we are lowering to X86ISD::SHUF128 we are going to lose track of individual 128-bit lanes that are UNDEF, so if we can widen these to guarantee that they are sequential with their neighbour we should. This helps with later shuffle combines.

Commit "[clang-format] Handle C# generic type constraints",
https://github.com/llvm/llvm-project/commit/dcbcec4822f47ec5b638dd9c20dcebd464569dae
regressed the formatting of code containing `where` as an identifier in other
languages.

The Chained in the name potentially leads to confusion. Also updated the
comment to drop the unnecessary mention of tile-sized.

This fixes

    warning: loop variable 'Def' of type 'const llvm::Register' creates a copy from type 'const llvm::Register' [-Wrange-loop-analysis]

llvm::Register just contains a single unsigned and should be copied.

Reviewers: rampitec

Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D77011

Summary:
Currently top-level expressions won't automatically get Fix-Its applied. The reason
for that is that we only set the `m_fixed_text` member if we have a wrapping
source code (I.e. `m_source_code` is not zero and is wrapping some expressions).

This patch just always sets `m_fixed_text` to get this working.

Reviewers: labath, jingham

Reviewed By: labath

Subscribers: JDevlieghere

Differential Revision: https://reviews.llvm.org/D77042

Use script to update test for ori with 32-bit imms, and add test for
ori with 64-bit imms.

Add a bit more logic into the 'FalseLaneZeros' tracking to enable
horizontal reductions and also make the VADDV variants
validForTailPredication.

Differential Revision: https://reviews.llvm.org/D76708

Summary:
If the bitwith expr contains errors, we mark the field decl invalid.

This patch also tweaks the behavior of ObjCInterfaceDecl to be consistent with
existing RecordDecl -- getObjCLayout method is only called with valid decls.

Reviewers: sammccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76953

Summary:
The kernel kmalloc function may return a constant value ZERO_SIZE_PTR
if a zero-sized block is allocated. This special value is allowed to
be passed to kfree and should produce no warning.

This is a simple version but should be no problem. The macro is always
detected independent of if this is a kernel source code or any other
code.

Reviewers: Szelethus, martong

Reviewed By: Szelethus, martong

Subscribers: rnkovacs, xazax.hun, baloghadamsoftware, szepet, a.sidorin, mikhail.ramalho, Szelethus, donat.nagy, dkrupp, gamesh411, Charusso, martong, ASDenysPetrov, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76830

Differential Revision: https://reviews.llvm.org/D77040

This test also passes on my Linux machine, so this seems too strict.

Summary:
Also deprecate getOriginalAlignment, getAlignment will take much more time as it is pervasive through the codebase (including TableGened files).

This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Reviewers: courbet

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D76933

Typo fix.

Iterator checkers (and planned container checkers) need the option
aggressive-binary-operation-simplification to be enabled. Without this
option they may cause assertions. To prevent such misuse, this patch adds
a preventive check which issues a warning and denies the registartion of
the checker if this option is disabled.

Differential Revision: https://reviews.llvm.org/D75171

In the original batch of MVE VMOVimm code generation VMOV.i64 was left
out due to the way it was done downstream. It turns out that it's fairly
simple though. This adds the codegen for it, similar to NEON.

Bigendian is technically incorrect in this version, which John is fixing
in a Neon patch.

[TTI][X86] Fix the value passed to IsUnsigned for cost modeling of experimental.vector.reduce.smin/smax/umin/umax.

We were passing true for smax/smin and false for umax/umin.

In past, isGuaranteedToTransferExecutionToSuccessor contained some weird logic
for volatile loads/stores that was ultimately removed by patch D65375. It's time to
remove a piece of dependent logic that used to be a workaround for the code which
is now deleted.

Reviewed By: uenoku
Differential Revision: https://reviews.llvm.org/D76918

Summary:
This revision performs a lot of different cleanups on operation documentation to ensure that they are consistent, e.g. using mlir code blocks, formatting, etc.

This revision also includes the auto-generated documentation into the hand-written documentation for the dialects that have a specific top-level dialect file. This updates the documentation for all dialects aside from SPIRV and STD. These dialects will be updated in a followup.

Differential Revision: https://reviews.llvm.org/D76734

Summary: This revision updates the dialect documentation to use the auto-generated markdown for operations. This allows for updating some out-of-date bits of documentation, and allows for displaying a large of number of newly added operations that did not have a counter part in Standard.md.

Differential Revision: https://reviews.llvm.org/D76743

Summary: This revision updates the SourceMgrDiagnosticHandler to not print the source location of a note if it is the same location as the previously printed diagnostic. This helps avoid redundancy, and potential confusion, when looking at the diagnostic output.

Differential Revision: https://reviews.llvm.org/D76787

Summary:
This patch clarifies the semantics of branching on undef value.

Defining `br undef` as undefined behavior explains optimizations that use branch conditions, such as CVP (D76931) and GVN (propagateEquality).

For `switch cond`, it is defined to raise UB if cond is an expression containing undef && cond is not frozen &&
it may yield different values.
This allows that at the destination block the branch condition can be assumed to be frozen already (otherwise UB was already triggered).
This condition is slightly stricter than MemorySanitizer, which allows undef-y condition if it always leads to the same destination,
but it does not break MemorySanitizer because we are giving stricter constraint.

Reviewers: efriedma, fhahn, nikic, spatel, jdoerfert, nlopes

Reviewed By: nlopes

Subscribers: regehr, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D76973

of array new expressions with runtime bound.

Differential Revision: https://reviews.llvm.org/D76913

Differential Revision: https://reviews.llvm.org/D76911

This reverts commit cd7f9751 which has
unintended breakage to non-libcxx projects when using the documented way
of building LLVM. (See the Getting Started guide. I.e. one big CMake setup.)

Mostly this matches the sse4.2 we already had command lines for.
Except in the i64 case since sse4.1 doesn't have pcmpgtq.

Baseline tests for D76983 (PR45314)

Differential Revision: https://reviews.llvm.org/D77024

SSE4.2 has the pcmpgtq instruction which we will use in
vXi64 reductions when its available.

Shrinks clang by 40k.

Delete arm-exidx-link.s which is now covered by arm-exidx-output.s

Differential Revision: https://reviews.llvm.org/D76409