The exact case is folded, the inexact one is not.

Differential Revision: https://reviews.llvm.org/D100720

On Windows, one can't use perms::none on a directory to trigger
failures to read the directory entries.

These remaining tests can't use GetWindowsInaccessibleDir() sensibly,
e.g. for tests that rely on toggling accessibility back and forth during
the test, or where the semantics of the dir provided by
GetWindowsInaccessibleDir() doesn't allow for running the ifdeffed tests
meaningfully.

Differential Revision: https://reviews.llvm.org/D97538

We previously used splats instead of v128.const to materialize vector constants
because V8 did not support v128.const. Now that V8 supports v128.const, we can
use v128.const instead. Although this increases code size, it should also
increase performance (or at least require fewer engine-side optimizations), so
it is an appropriate change to make.

Differential Revision: https://reviews.llvm.org/D100716

Previously the decision of which library to try to autolink was
based on _DLL, however the _DLL define (which is set by the compiler)
is tied to whether using a dynamically linked CRT or not, and the choice
of dynamic or static CRT is entirely orthogonal to whether libc++ is
linked dynamically or statically.

If _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS isn't defined, then all
declarations are decorated with dllimport, and there's no doubt that
the DLL version of the library is what must be linked.

_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS is defined if building with
LIBCXX_ENABLE_SHARED disabled, and thus the static library is what
should be linked.

If defining _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS manually but wanting
to link against the DLL version of the library, that's not a canonical
configuration, and then it's probably reasonable to manually define
_LIBCPP_NO_AUTO_LINK too, and manually link against the desired
library.

This fixes, among other issues, running tests for the library if
built with LIBCXX_ENABLE_STATIC disabled.

Differential Revision: https://reviews.llvm.org/D100539

Differential Revision: https://reviews.llvm.org/D100786

We no longer need this after Pavel's change to automatically find debug
servers to test. (3ca7b2d0)

XCOFF hasn't implemented lowerRelativeReference.
So we need to disable new pass introduced by https://reviews.llvm.org/D94355 for
AIX for now.

Reviewed By: gulfem

Differential Revision: https://reviews.llvm.org/D100584

Adjust for the Lua error message printed by Lua 5.4.3.

When formatting memory with as eFormatAddressIn and symbolication fails,
fix the code address and print the symbol it points to, if any.

We previously shrunk the mmap range size on ios, but those settings got inherited by apple silicon macs.
Don't shrink the vm range on apple silicon Mac since we have access to the full range.

Also don't shrink vm range for iOS simulators because they have the same range as the host OS, not the simulated OS.

rdar://75302812

Reviewed By: delcypher, kubamracek, yln

Differential Revision: https://reviews.llvm.org/D100234

This patch removes -fixed-abi check for indirect calls
and also adds queue-ptr which is required for indirect calls to work.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D100633

Comparisons to zero or one after cset instructions can be safely
removed in examples like:

cset w9, eq          cset w9, eq
cmp  w9, #1   --->   <removed>
b.ne    .L1          b.ne    .L1

cset w9, eq          cset w9, eq
cmp  w9, #0   --->   <removed>
b.ne    .L1          b.eq    .L1

Peephole optimization to detect suitable cases and get rid of that
comparisons added.

Differential Revision: https://reviews.llvm.org/D98564

Reviewed by: Artem Belevich, Richard Smith

Differential Revision: https://reviews.llvm.org/D98193

Define IEEE_IS_NAN, IEEE_IS_FINITE, & IEEE_REM.

Differential Revision: https://reviews.llvm.org/D100599

During store promotion, we check whether the pointer was captured
to exclude potential reads from other threads. However, we're only
interested in captures before or inside the loop. Check this using
PointerMayBeCapturedBefore against the loop header.

Differential Revision: https://reviews.llvm.org/D100706

Differential Revision: https://reviews.llvm.org/D100682

As noted in the FIXME there's a sort of agreement that the any
extra bits stored will be 0.

The generated code is pretty terrible. I was really hoping we
could use a tail undisturbed trick, but tail undisturbed no
longer applies to masked destinations in the current draft
spec.

Fingers crossed that it isn't common to do this. I doubt IR
from clang or the vectorizer would ever create this kind of store.

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D100618

An upcoming change will cause loads from a constant zeroinitializer
global to be constant folded, breaking this test.

This is a partial port of AArch64TargetLowering::LowerCTPOP.

This custom lowering tries to uses NEON instructions to give a more efficient
CTPOP lowering when possible.

In the non-NEON/noimplicitfloat case, this should use the generic lowering
(see: https://godbolt.org/z/GcaPvWe4x). I think that's worth implementing after
implementing the widening code for s16/s8 though.

Differential Revision: https://reviews.llvm.org/D100399

These constraints are machine agnostic; there's no reason to handle
these per-arch. If arches don't support these constraints, then they
will fail elsewhere during instruction selection. We don't need virtual
calls to look these up; TargetLowering::getInlineAsmMemConstraint should
only be overridden by architectures with additional unique memory
constraints.

Reviewed By: echristo, MaskRay

Differential Revision: https://reviews.llvm.org/D100416

It turns out we actually import a bunch of selection code for intrinsics. The
imported code checks that the register banks on the G_INTRINSIC instruction
are correct. If so, it goes ahead and selects it.

This adds code to AArch64RegisterBankInfo to allow us to correctly determine
register banks on intrinsics which have known register bank constraints.

For now, this only handles @llvm.aarch64.neon.uaddlv. This is necessary for
porting AArch64TargetLowering::LowerCTPOP.

Also add a utility for getting the intrinsic ID from a G_INTRINSIC instruction.
This seems a little nicer than having to know about how intrinsic instructions
are structured.

Differential Revision: https://reviews.llvm.org/D100398

The binary image list contains the following entry when a frame is not
found in any know binary image:

  {
    "size" : 0,
    "source" : "A",
    "base" : 0,
    "uuid" : "00000000-0000-0000-0000-000000000000"
  }

Note that this object is missing the name and path keys. This patch
makes the JSON parser resilient against their absence.

The test here is reduced from the fuzzer-generated crasher in:
https://llvm.org/PR50023
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33395

I don't know if this is the best or complete solution, but the
zext of the i42 type appears to match the behavior if we run a
weird type example like this through the IR optimizer with -O1.

Differential Revision: https://reviews.llvm.org/D100766

Reviewed By: Xiangling Liao

Differential Revision: https://reviews.llvm.org/D100350

In particular, this allows to create constant expressions
instead of IR Instruction's if the argumen is a constant.

I.e., use GetOptimalInsertionPointForCastOf() helper to get the insertion
point, and try to reuse casts first.

I guess this case hasn't come up thus far, and i'm not sure if it can
really happen for the existing usages, thus no test in *this* commit.

But, the following commit adds test coverage,
there we'd expirience a crash without this fix.

Currently, InsertNoopCastOfTo() would implicitly insert that cast,
but now that we have SCEVPtrToIntExpr, i'm hoping we could stop
InsertNoopCastOfTo() from doing that. But first all users must be fixed.

[NFC][SCEVExpander][LoopDistribute] Add test for SCEVPtrToIntExpr in SCEVExpander::generateOverflowCheck()

We shouldn't end up with ptrtoint-of-getelementptr there.

ptr<->int casts are only valid for integral pointes,
defensively assert that we don't try to break that here.