Changes

[RISCV] Fix incorrect operand type of inst alias for InstR4

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D110381

[TTI] getUserCost - Ensure a vector insert/extract index is in unsigned 32-bit range

Otherwise fallback to the generic 'unknown index' path

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29050

tsan: uninline RacyStacks::operator==

It's only used during race reporting.
There is no point in polluting the main header file with it.

Reviewed By: xgupta

Differential Revision: https://reviews.llvm.org/D110470

[ARM] Fix Arm block placement creating branches after jump tables.

Given:
 - A jump table
 - Which jumps to the next block
 - The next block ends in a WLS
 - Where the WLS conditionally jumps to block earlier in the program.

The Arm block placement pass would attempt to move the block containing
the WLS earlier, as the WLS instruction can only branch forward. In
doing so it would add a branch from the jumptable block to the WLS
block, thinking it previously fell-through.

This in itself would be fine, if a little inefficient, but the constant
island pass expects all instructions after a jump-table branch to have
been removed by analyzeBranch. So it gets confused and can assign the
same labels to multiple jump table blocks.

I've changed the condition to the same as used in analyzeBranch.

[MLIR] Add functionality to remove redundant local variables

This patch adds functionality to FlatAffineConstraints to remove local
variables using equalities. This helps in keeping output representation of
FlatAffineConstraints smaller.

This patch is part of a series of patches aimed at generalizing affine
dependence analysis.

Reviewed By: bondhugula

Differential Revision: https://reviews.llvm.org/D110056

[DAG] combineShiftToMULH - move getValueType() inside assert. NFCI.

Avoids an unnecessary (void).

[IR] DIBuilder::createEnumerator - pass APSInt by const reference

Avoid unnecessary copy by value.

[CMake] Consistently use the LibXml2::LibXml2 target instead of LIBXML2_LIBRARIES

Linking against the LibXml2::LibXml2 target has the advantage of not only importing the library, but also adding the include path as well as any definitions the library requires. In case of a static build of libxml2, eg. a define is set on Windows to remove any DLL imports and export.

LLVM already makes use of the target, but c-index-test and lldb were still linking against the library only.

The workaround for Mac OS-X that I removed seems to have also been made redundant since https://reviews.llvm.org/D84563 I believe

Differential Revision: https://reviews.llvm.org/D109975

[InstCombine] Ensure shifts are in range for (X << C1) / C2 -> X fold.

We can get here before out of range shift amounts have been handled - limit to BW-2 for sdiv and BW-1 for udiv

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38078

[fir] Add desc to fir.array_load op and update operand name

This patch is part of the upstreaming effort from fir-dev branch.

Add a description for the fir.array_load opeartion and rename lenParams to typeparams.

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D110393

Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>

[lldb] Convert misc. StringConvert uses

Replace misc. StringConvert uses with llvm::to_integer()
and llvm::to_float(), except for cases where further refactoring is
planned.  The purpose of this change is to eliminate the StringConvert
API that is duplicate to LLVM, and less correct in behavior at the same
time.

Differential Revision: https://reviews.llvm.org/D110447

[X86] combineShiftToPMULH - relax from ISA from SSE41 to SSE2

With improved shuffle combines (in particular canonicalizeShuffleWithBinOps), we can now usefully perform this on any SSE2+ target.

We should be able to remove this entirely and just use DAGCombiner's combineShiftToMULH if we can someday get it to support illegal (pre-widened) types.

[X86] X86FastISel::fastMaterializeConstant - break if-else chain to fix llvm-else-after-return warning. NFCI

All previous if-else cases return

[X86][SSE] combineMulToPMADDWD - enable sext(v8i16) -> zext(v8i16) fold on pre-SSE41 targets

We already do this on SSE41 targets where we have sext/zext instructions, now that combineShiftToPMULH handles SSE2 targets, we can enable this here as well.

[Mips] Remove redundant declarations (NFC)

Note that identical declarations immediately precede what's being
removed in this patch.

Identified with readability-redundant-declaration.

[X86][SSE] combineMulToPMADDWD - enable sext(v8i16) -> zext(v8i16) fold on sub-128 bit vectors

[X86][SSE] combineMulToPMADDWD - mask off upper bits of sign-extended vXi32 constants

If we are multiplying by a sign-extended vXi32 constant, then we can mask off the upper 16 bits to allow folding to PMADDWD and make use of its implicit sign-extension from i16

[CostModel][X86] Adjust vXi32 multiply costs if it can be performed using PMADDWD

Update the costs to match the codegen from combineMulToPMADDWD - not only can we use PMADDWD is its zero-extended, but also if its a constant or sign-extended from a vXi16 (which can be replaced with a zero-extension).

[clang-format] Left/Right alignment fixer can cause false positive replacements when they don't actually change anything

Earlier during the development of {D69764} I felt it was no longer necessary to
ensure we were not trying to change code which didn't need to change
and we felt this could be removed, however I'd like to bring this back for now
as I am seeing some false positives in terms of the "replacements"

What I see is the generation of a replacement which is a "No Op" on the original
code, I think this comes about because of the merging of replacements:

```
static const a;
->
const static a;
->
static const a;
```

The replacements don't really merge, in such a way as to identify when we have gone
back to the original

Also remove the Penalty as I'm not using it (and it became marked as set and no used,
I'd rather get rid of it if it means nothing)

I think we need to do this step for now, as many people use the --output-replacements-xml
to identify that the file "needs a clang-format"

The same can be seen with the -n or --dry-run option as this uses the replacements
to drive the error/warning output.

Reviewed By: HazardyKnusperkeks

Differential Revision: https://reviews.llvm.org/D110392

[DAG] ReduceLoadOpStoreWidth - replace getABITypeAlign with allowsMemoryAccess (PR45116)

One of the cases identified in PR45116 - we don't need to limit store narrowing to ABI alignment, we can use allowsMemoryAccess - which tests using getABITypeAlign, but also checks if a target permits (fast) misaligned memory access by checking allowsMisalignedMemoryAccesses as a fallback.

[ORC] Introduce EPCGenericRTDyldMemoryManager.

EPCGenericRTDyldMemoryMnaager is an EPC-based implementation of the
RuntimeDyld::MemoryManager interface. It enables remote-JITing via EPC (backed
by a SimpleExecutorMemoryManager instance on the executor side) for RuntimeDyld
clients.

The lli and lli-child-target tools are updated to use SimpleRemoteEPC and
SimpleRemoteEPCServer (rather than OrcRemoteTargetClient/Server), and
EPCGenericRTDyldMemoryManager for MCJIT tests.

By enabling remote-JITing for MCJIT and RuntimeDyld-based ORC clients,
EPCGenericRTDyldMemoryManager allows us to deprecate older remote-JITing
support, including OrcTargetClient/Server, OrcRPCExecutorProcessControl, and the
Orc RPC system itself. These will be removed in future patches.

[lli] Add ChildTarget dependence on OrcTargetProcess library.

ChildTarget depends on OrcTargetProcess after bef55a2b47a.

Revert "[ORC] Introduce EPCGenericRTDyldMemoryManager."

This reverts commit bef55a2b47a938ef35cbd7b61a1e5fa74e68c9ed while I investigate
failures on some bots. Also reverts "[lli] Add ChildTarget dependence on
OrcTargetProcess library." (7a219d801bf2c3006482cf3cbd3170b3b4ea2e1b) which was
a fallow-up to bef55a2b47a.

[ELF][test] Improve test coverage

[ORC-RT] ExecutorAddrDiff ergonomic improvements; contains and overlaps methods

Renames StartAddress and EndAddress members to Start and End.

Adds contains and overlap methods.

Adds a constructor from an address and size.

These changes are counterparts to LLVM commits ef391df2b6332, c0d889995e708, and
37f1b7a3f35fd.

[BasicAA] Don't consider Argument as escape source (NFCI)

The case of an Argument and an identified function local is already
handled earlier, because we don't care about captures in that case.
As such, we don't need to additionally consider the combination of
an Argument with a non-escaping identified function local.

This ensures that isEscapeSource() only returns true for
instructions, which is necessary for D110368.

[DSE] Make capture check more precise

It is sufficient that the object has not been captured before the
load that produces the pointer we're loading. A capture after that
can not affect the already loaded pointer.

This is small part of D110368 applied separately.

[AA] Move earliest escape tracking from DSE to AA

This is a followup to D109844 (and alternative to D109907), which
integrates the new "earliest escape" tracking into AliasAnalysis.
This is done by replacing the pre-existing context-free capture
cache in AAQueryInfo with a replaceable (virtual) object with two
implementations: The SimpleCaptureInfo implements the previous
behavior (check whether object is captured at all), while
EarliestEscapeInfo implements the new behavior from DSE.

This combines the "earliest escape" analysis with the full power of
BasicAA: It subsumes the call handling from D109907, considers a
wider range of escape sources, and works with AA recursion. The
compile-time cost is slightly higher than with D109907.

Differential Revision: https://reviews.llvm.org/D110368

[ELF] Default gotBaseSymInGotPlt to false (NFC for most architectures)

Most architectures use .got instead of .got.plt, so switching the default can
minimize customization.

This fixes an issue for SPARC V9 which uses .got .
AVR, AMDGPU, and MSP430 don't seem to use _GLOBAL_OFFSET_TABLE_.