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| author | LU-JOHN <John.Lu@amd.com> | 2025-10-22 08:42:29 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-10-22 08:42:29 -0500 |
| commit | 9abbec66bfa34922521ef88fad1d6fcd43c1c462 (patch) | |
| tree | 3a81eb07ba2991aea064dc26230a17d8064e57a6 /llvm/lib/CodeGen/MachineBasicBlock.cpp | |
| parent | 411be14eab7ac4600595ad622810e8918c54856d (diff) | |
| download | llvm-9abbec66bfa34922521ef88fad1d6fcd43c1c462.zip llvm-9abbec66bfa34922521ef88fad1d6fcd43c1c462.tar.gz llvm-9abbec66bfa34922521ef88fad1d6fcd43c1c462.tar.bz2 | |
[AMDGPU] Reland "Remove redundant s_cmp_lg_* sX, 0" (#164201)
Reland PR https://github.com/llvm/llvm-project/pull/162352. Fix by
excluding SI_PC_ADD_REL_OFFSET from instructions that set SCC = DST!=0.
Passes check-libc-amdgcn-amd-amdhsa now.
Distribution of instructions that allowed a redundant S_CMP to be
deleted in check-libc-amdgcn-amd-amdhsa test:
```
S_AND_B32 485
S_AND_B64 47
S_ANDN2_B32 42
S_ANDN2_B64 277492
S_CSELECT_B64 17631
S_LSHL_B32 6
S_OR_B64 11
```
---------
Signed-off-by: John Lu <John.Lu@amd.com>
Co-authored-by: Matt Arsenault <arsenm2@gmail.com>
Diffstat (limited to 'llvm/lib/CodeGen/MachineBasicBlock.cpp')
0 files changed, 0 insertions, 0 deletions