Fix an infinite loop I caused by making sure to legalize the flag operand
of CALLSEQ_* nodes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25582 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 77e721e..e5dd538 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -823,6 +823,13 @@
Tmp2 = Node->getOperand(0);
if (Tmp1 != Tmp2)
Node->setAdjCallChain(Tmp1);
+
+ // If this has a flag input, do legalize it.
+ if (Node->getOperand(Node->getNumOperands()-1).getValueType() == MVT::Flag){
+ Tmp1 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1));
+ if (Tmp1 != Node->getOperand(Node->getNumOperands()-1))
+ Node->setAdjCallFlag(Tmp1);
+ }
// Note that we do not create new CALLSEQ_DOWN/UP nodes here. These
// nodes are treated specially and are mutated in place. This makes the dag
@@ -1365,7 +1372,8 @@
Tmp2,
Node->getOperand(3));
}
- Node = Result.Val;
+ Result = LegalizeOp(Result);
+ break;
}
switch (getTypeAction(Node->getOperand(1).getValueType())) {