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| author | Aiden Grossman <aidengrossman@google.com> | 2025-09-26 22:48:22 +0000 |
|---|---|---|
| committer | Aiden Grossman <aidengrossman@google.com> | 2025-09-26 22:48:22 +0000 |
| commit | 76533872e149395812a6d1651aa49dbf53fb4921 (patch) | |
| tree | 199a669fa57a4effc3116705d2ec89c07ff36c65 /llvm/lib/Target/AMDGPU/SIFoldOperands.cpp | |
| parent | 54f5c1b2e17a9be61609d70dbbc8354ad41bb931 (diff) | |
| parent | 37e7ad184d002db15f72771938755580433cf96d (diff) | |
[𝘀𝗽𝗿] changes introduced through rebaseusers/boomanaiden154/main.lit-remove-t-from-tests
Created using spr 1.3.6
[skip ci]
Diffstat (limited to 'llvm/lib/Target/AMDGPU/SIFoldOperands.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/SIFoldOperands.cpp | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp b/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp index 38331b614bce..51c56ecea2c9 100644 --- a/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp +++ b/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp @@ -712,10 +712,15 @@ bool SIFoldOperandsImpl::updateOperand(FoldCandidate &Fold) const { TII->getRegClass(MI->getDesc(), Fold.UseOpNo, TRI)) { const TargetRegisterClass *NewRC = TRI->getRegClassForReg(*MRI, New->getReg()); - const TargetRegisterClass *ConstrainRC = - TRI->findCommonRegClass(OpRC, Old.getSubReg(), NewRC, New->getSubReg()); - if (!ConstrainRC) - return false; + + const TargetRegisterClass *ConstrainRC = OpRC; + if (New->getSubReg()) { + ConstrainRC = + TRI->getMatchingSuperRegClass(NewRC, OpRC, New->getSubReg()); + + if (!ConstrainRC) + return false; + } if (!MRI->constrainRegClass(New->getReg(), ConstrainRC)) { LLVM_DEBUG(dbgs() << "Cannot constrain " << printReg(New->getReg(), TRI) |