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[VectorCombine][AMDGPU] Narrow Phi of Shuffles. #140188

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[VectorCombine][AMDGPU] Narrow Phi of Shuffles. #140188

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f331e87
[VectorCombine][AMDGPU] Narrow Phi of Shuffles.
May 16, 2025
4a6a0f2
Add VectorCombine transform and update tests.
May 16, 2025
c712df5
Address review comments.
May 19, 2025
78d6a2e
Address review comments.
May 19, 2025
e4f333b
Formatting.
May 19, 2025
bb89c13
Retrigger checks.
May 20, 2025
d0b3d68
Merge branch 'main' into narrow_phis
PeddleSpam May 21, 2025
cae4e9b
Address comments.
May 28, 2025
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Formatting.
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Leon Clark committed May 19, 2025
commit e4f333b8b0ed16733fd7f0d5147b44a11383f960
4 changes: 2 additions & 2 deletions 4 llvm/lib/Transforms/Vectorize/VectorCombine.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3497,9 +3497,9 @@ bool VectorCombine::shrinkPhiOfShuffles(Instruction &I) {
ArrayRef<int> Mask0;
ArrayRef<int> Mask1;

if (!match(Phi->getOperand(0u),
if (!match(Phi->getOperand(0u),
m_OneUse(m_Shuffle(m_Value(Op), m_Poison(), m_Mask(Mask0)))) ||
!match(Phi->getOperand(1u),
!match(Phi->getOperand(1u),
m_OneUse(m_Shuffle(m_Specific(Op), m_Poison(), m_Mask(Mask1)))))
return false;
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