================
@@ -8113,10 +8583,151 @@ static bool combineCCMask(SDValue &CCReg, int
&CCValid, int &CCMask) {
CCReg = IPM->getOperand(0);
return true;
}
-
return false;
}
+std::optional<SDValue>
+SystemZTargetLowering::combineSELECT_CC_CCIPMMask(SDNode *N,
+ DAGCombinerInfo &DCI) const {
----------------
uweigand wrote:
I don't understand why we need yet another function here, which is called only
for `SELECT_CCMASK` and not `BR_CCMASK`. Shouldn't all these optimizations
apply equally to both cases? Why cannot this be integrated into
`combineCCMask`?
https://github.com/llvm/llvm-project/pull/125970
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