[llvm] [LLVM] Add `llvm.masked.compress` intrinsic (PR #92289)
Simon Pilgrim via llvm-commits
llvm-commits at lists.llvm.org
Tue Jun 18 06:51:55 PDT 2024
================
@@ -12091,6 +12093,57 @@ SDValue DAGCombiner::visitVP_STRIDED_STORE(SDNode *N) {
return SDValue();
}
+SDValue DAGCombiner::visitMASKED_COMPRESS(SDNode *N) {
+ SDLoc DL(N);
+ SDValue Vec = N->getOperand(0);
+ SDValue Mask = N->getOperand(1);
+ SDValue Passthru = N->getOperand(2);
+ EVT VecVT = Vec.getValueType();
+
+ bool HasPassthru = !Passthru.isUndef();
+
+ APInt SplatVal;
+ if (ISD::isConstantSplatVector(Mask.getNode(), SplatVal))
+ return SplatVal.isAllOnes()
----------------
RKSimon wrote:
Should we enforce that the contents of Mask match getBooleanContents ? And should we be flipping this logic and check for a zero or non-zero value?
https://github.com/llvm/llvm-project/pull/92289
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