DebugLoc DL = N->getDebugLoc();
+ // We are going to replace the AND, OR, NAND with either BLEND
+ // or PSIGN, which only look at the MSB. The VSRAI instruction
+ // does not affect the highest bit, so we can get rid of it.
+ Mask = Mask.getOperand(0);
+
// Now we know we at least have a plendvb with the mask val. See if
// we can form a psignb/w/d.
// psign = x.type == y.type == mask.type && y = sub(0, x);
X.getValueType() == MaskVT && Y.getValueType() == MaskVT) {
assert((EltBits == 8 || EltBits == 16 || EltBits == 32) &&
"Unsupported VT for PSIGN");
- Mask = DAG.getNode(X86ISD::PSIGN, DL, MaskVT, X, Mask.getOperand(0));
+ Mask = DAG.getNode(X86ISD::PSIGN, DL, MaskVT, X, Mask);
return DAG.getNode(ISD::BITCAST, DL, VT, Mask);
}
// PBLENDVB only available on SSE 4.1