Catch attempts to remove a deleted node from the CSE maps. Better to
catch this here rather than later after accessing uninitialized memory
etc. Fires when compiling the testcase in PR8237.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121635 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 2e8b654..988ccd6 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -611,9 +611,6 @@
bool SelectionDAG::RemoveNodeFromCSEMaps(SDNode *N) {
bool Erased = false;
switch (N->getOpcode()) {
- case ISD::EntryToken:
- llvm_unreachable("EntryToken should not be in CSEMaps!");
- return false;
case ISD::HANDLENODE: return false; // noop.
case ISD::CONDCODE:
assert(CondCodeNodes[cast<CondCodeSDNode>(N)->get()] &&
@@ -643,6 +640,8 @@
}
default:
// Remove it from the CSE Map.
+ assert(N->getOpcode() != ISD::DELETED_NODE && "DELETED_NODE in CSEMap!");
+ assert(N->getOpcode() != ISD::EntryToken && "EntryToken in CSEMap!");
Erased = CSEMap.RemoveNode(N);
break;
}