[llvm] [ConstantFolding] Fold scalable get_active_lane_masks (PR #156659)
Matthew Devereau via llvm-commits
llvm-commits at lists.llvm.org
Thu Sep 4 05:00:46 PDT 2025
================
@@ -4238,6 +4238,13 @@ static Constant *ConstantFoldScalableVectorCall(
return ConstantInt::getFalse(SVTy);
}
+ case Intrinsic::get_active_lane_mask: {
+ auto Op0 = cast<ConstantInt>(Operands[0])->getValue();
+ auto Op1 = cast<ConstantInt>(Operands[1])->getValue();
+ if ((Op0.uge(Op1) && (!Op1.isZero())))
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MDevereau wrote:
Makes sense, I've removed the Op1.isZero check
https://github.com/llvm/llvm-project/pull/156659
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