================
@@ -137,7 +138,123 @@ class AMDGPURegBankLegalizeCombiner {
return {MatchMI, MatchMI->getOperand(1).getReg()};
}
+ std::tuple<GUnmerge *, int> tryMatchRALFromUnmerge(Register Src) {
+ auto *ReadAnyLane = MRI.getVRegDef(Src);
+ if (ReadAnyLane->getOpcode() == AMDGPU::G_AMDGPU_READANYLANE) {
+ Register RALSrc = ReadAnyLane->getOperand(1).getReg();
+ auto *UnMerge = getOpcodeDef<GUnmerge>(RALSrc, MRI);
+ if (UnMerge)
----------------
Pierre-vh wrote:
```suggestion
if (auto *UnMerge = getOpcodeDef<GUnmerge>(RALSrc, MRI))
```
https://github.com/llvm/llvm-project/pull/142789
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