The last use was removed by:

  commit 6b31e63b
  Author: Kazu Hirata <kazu@google.com>
  Date:   Sat Jun 24 07:33:50 2023 -0700

It's valuable to have document highlights for labels and be able to find
references to them.

Reviewed By: nridge

Differential Revision: https://reviews.llvm.org/D150124

This reverts commit 3e386b22.

Next to the original fold, this also implements an unnecessary and
inappropriate simplifyICmpWithDominatingAssume() based fold.

This adds support for reprocessing new instructions that were generated
by the target's eliminateFrameIndex.

Backwards frame index elimination uses backwards register scavenging,
which is preferred because it does not rely on accurate kill flags.

Differential Revision: https://reviews.llvm.org/D156690

This adds notes for the change from https://reviews.llvm.org/D146398 /
fcbbd964.

Differential Revision: https://reviews.llvm.org/D156627

Differential Revision: https://reviews.llvm.org/D154038

The RISC-V psABI recently added __bf16 in https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/367.
Now we can enable this new type in clang.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D150929

The refactored template can now be used with MachineVerifier.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D156522

Previously when llvm.reduce.* lowered, riscv backend created scalar vector with
netural element as start value. For llvm.reduce.and/or/min/max/fmax/fmin, we
could use the first element of source as the start value. It's benefit for RVV
since we could just use source vector as start vector.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D155929

We check the loop trip count is known a power of 2 to determine
whether the tail loop can be eliminated in D146199.
However, the remainder loop of mask scalable loop can also be removed
If we know the mask is always going to be true for every vector iteration.
Depend on the assume of power-of-two vscale on D155350

proofs： https://alive2.llvm.org/ce/z/FkTMoy

Fix https://github.com/llvm/llvm-project/issues/63616.

Reviewed By: goldstein.w.n, nikic, david-arm, paulwalker-arm
Differential Revision: https://reviews.llvm.org/D154953

Differential Revision: https://reviews.llvm.org/D156591

Currentlt, bf16 operations are automatically supported by promoting to float. This patch adds bf16 support by ensuring that load extension / truncate store operations are properly expanded.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D156646

Reviewed By: #libc, ldionne

Spies: wangpc, libcxx-commits

Differential Revision: https://reviews.llvm.org/D155512

This reverts commit 77ef88d7. There is
an unimaged crash report after landing this. See
https://reviews.llvm.org/D154695.

Reviewed By: #libc, Mordante

Spies: Mordante, libcxx-commits

Differential Revision: https://reviews.llvm.org/D155325

Limiting the test to only X86.

Reviewed By: Amir

Differential Revision: https://reviews.llvm.org/D156765

Reviewed By: #libc, Mordante

Spies: arichardson, Mordante, libcxx-commits

Differential Revision: https://reviews.llvm.org/D155260

Reviewed By: #libc, Mordante

Spies: Mordante, libcxx-commits

Differential Revision: https://reviews.llvm.org/D155259

Reviewed By: #libc, Mordante

Spies: Mordante, arichardson, libcxx-commits

Differential Revision: https://reviews.llvm.org/D155258

This reverts commit a496c8be.

The workaround in c26dfc81 should work
around the underlying problem with SUBREG_TO_REG.

Handle both v0 and v1 operands that may be converted to SPIR-V scalars.

Fixes: https://github.com/llvm/llvm-project/issues/64271

Reviewed By: antiagainst

Differential Revision: https://reviews.llvm.org/D156717

Clang can generate DW_TAG_inlined_subroutine with low_pc 0. With split dwarf
this led to range offset being a negative number.

Reviewed By: maksfb

Differential Revision: https://reviews.llvm.org/D156742

Depends On D156001

Reviewed By: aartbik

Differential Revision: https://reviews.llvm.org/D156010

This reverts commit c56514f2. This
commit adds global state that is shared between clang driver and clang
cc1, which is not correct when clang is used with `-fno-integrated-cc1`
option (no integrated cc1). The -march and -mtune option needs to be
properly passed through cc1 command-line and stored in TargetInfo.

This prevents -Wmissing-braces warnings.

Reviewed By: michaelrj, Caslyn

Differential Revision: https://reviews.llvm.org/D156629

This should be approximately first and run with other module passes.

https://reviews.llvm.org/D155987

BOLT-ERROR and BOLT-WARNING messages are output to stderr which is not captured
by piping to FileCheck. Redirect stderr to stdout to fix that in tests.

Reviewed By: #bolt, maksfb

Differential Revision: https://reviews.llvm.org/D156340

Don't understand why this would either be OK or necessary, but doesn't
appear to happen in any tests. This was introduced way back in
76e66c31

https://reviews.llvm.org/D156265

For the purpose of the test it works as well to have a use after the
copy itself.

This gets our -Werror build working again.

Differential Revision: https://reviews.llvm.org/D156745

Compile units are not left explicitly if they have const global
expression.  They should be left if that const global is used in a
function that is contained in extracted module.

Signed-off-by: Mikhail Lychkov <mikhail.lychkov@intel.com>

Differential Revision: https://reviews.llvm.org/D131179

The test run fine on my AMD GPU machine, we should verify them on others
too and put them into our regular testing. Not testing O1/2/3 is really
bad and not testing all architecturs is similarly problematic.

Differential Revision: https://reviews.llvm.org/D148576