Fix a mistake in my previous patch pointed out by sabre; the AssertZext
case in MaskedValueIsZero was wrong.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23165 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index c550e68..aeacfd5 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -1095,10 +1095,11 @@
SrcBits = MVT::getSizeInBits(cast<VTSDNode>(Op.getOperand(3))->getVT());
return (Mask & ((1ULL << SrcBits)-1)) == 0; // Returning only the zext bits.
case ISD::ZERO_EXTEND:
- case ISD::AssertZext:
SrcBits = MVT::getSizeInBits(Op.getOperand(0).getValueType());
return MaskedValueIsZero(Op.getOperand(0),Mask & ((1ULL << SrcBits)-1),TLI);
-
+ case ISD::AssertZext:
+ SrcBits = MVT::getSizeInBits(cast<VTSDNode>(Op.getOperand(1))->getVT());
+ return (Mask & ((1ULL << SrcBits)-1) == 0; // Returning only the zext bits.
case ISD::AND:
// (X & C1) & C2 == 0 iff C1 & C2 == 0.
if (ConstantSDNode *AndRHS = dyn_cast<ConstantSDNode>(Op.getOperand(1)))