llvm-project.git/llvm/lib/Target/AMDGPU/AMDGPUAnnotateUniformValues.cpp, branch users/nico/python-2

[AMDGPU] Preserve all analyses if nothing changed (#117994)

2024-11-28T14:33:05+00:00

[AMDGPU] Move AMDGPUMemoryUtils out of Utils. NFC. (#104930)

2024-08-20T15:15:46+00:00

It is only used by CodeGen so does not need to be shared with the
assembler/disassembler.

AMDGPU/NewPM: Initialize class member

2024-08-10T04:54:55+00:00

After #102654

AMDGPU/NewPM: Port AMDGPUAnnotateUniformValues to new pass manager (#102654)

2024-08-10T03:06:08+00:00

[AMDGPU] Replace LegacyDA with Uniformity Analysis in AnnotateUniformValues

2023-02-28T20:05:38+00:00

Reviewed By: sameerds

Differential Revision: https://reviews.llvm.org/D144162

[AMDGPU] Return better Changed status from AMDGPUAnnotateUniformValues

2022-02-17T09:31:42+00:00

Differential Revision: https://reviews.llvm.org/D119943

[AMDGPU] Improve clobbering checks in the kernel argument promotion

2022-02-10T22:51:47+00:00

Use same MSSA clobbering checks as in the AMDGPUAnnotateUniformValues.
Kernel argument promotion needs exactly the same information so factor
out utility function isClobberedInFunction.

Differential Revision: https://reviews.llvm.org/D119480

[AMDGPU] Simplify AMDGPUAnnotateUniformValues::visitLoadInst

2022-02-03T16:27:48+00:00

Always set uniform metadata on the pointer if it is an instruction, but
otherwise do not bother to create a trivial getelementptr instruction,
because AMDGPUInstrInfo::isUniformMMO can already detect that various
non-instruction pointers are uniform.

Most of the test case churn is from tests that used undef as a pointer,
which AMDGPUInstrInfo::isUniformMMO treats as uniform.

Differential Revision: https://reviews.llvm.org/D118909

[AMDGPU] Use new target MMO flag MONoClobber

2022-02-02T17:12:36+00:00

This allows us to set the noclobber flag on (the MMO of) a load
instruction instead of on the pointer. This fixes a bug where noclobber
was being applied to all loads from the same pointer, even if some of
them were clobbered.

Differential Revision: https://reviews.llvm.org/D118775

[AMDGPU] Check atomics aliasing in the clobbering annotation

2022-02-01T20:33:25+00:00

MemorySSA considers any atomic a def to any operation it dominates
just like a barrier or fence. That is correct from memory state
perspective, but not required for the no-clobber metadata since
we are not using it for reordering. Skip such atomics during the
scan just like a barrier if it does not alias with the load.

Differential Revision: https://reviews.llvm.org/D118661