This shouldn't be necessary
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59090 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaInstrInfo.td b/lib/Target/Alpha/AlphaInstrInfo.td
index 8e6df4a..c4e6edc 100644
--- a/lib/Target/Alpha/AlphaInstrInfo.td
+++ b/lib/Target/Alpha/AlphaInstrInfo.td
@@ -93,7 +93,8 @@
}], SExt16>;
def zappat : PatFrag<(ops node:$LHS), (and node:$LHS, imm:$L), [{
- ConstantSDNode *RHS = cast<ConstantSDNode>(N->getOperand(1));
+ ConstantSDNode *RHS = dyn_cast<ConstantSDNode>(N->getOperand(1));
+ if (!RHS) return 0;
uint64_t build = get_zapImm(N->getOperand(0), (uint64_t)RHS->getZExtValue());
return build != 0;
}]>;