Matt Arsenault 8609df7c6e AMDGPU: Refine undef handling for llvm.amdgcn.class intrinsic
This barely matters since 99% are converted to the generic intrinsic now,
and the only real difference is the target intrinsic supports a variable
test mask. Start propagating poison. Prefer folding to a defined result (false)
for an undef test mask. Propagate undef for the first operand.
2023-06-01 18:35:55 -04:00
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