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-rw-r--r--lib/CodeGen/MachineBasicBlock.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineBasicBlock.cpp b/lib/CodeGen/MachineBasicBlock.cpp
index 1abb8f240c..cf885251d6 100644
--- a/lib/CodeGen/MachineBasicBlock.cpp
+++ b/lib/CodeGen/MachineBasicBlock.cpp
@@ -596,6 +596,11 @@ bool MachineBasicBlock::canFallThrough() {
MachineBasicBlock *
MachineBasicBlock::SplitCriticalEdge(MachineBasicBlock *Succ, Pass *P) {
+ // Splitting the critical edge to a landing pad block is non-trivial. Don't do
+ // it in this generic function.
+ if (Succ->isLandingPad())
+ return NULL;
+
MachineFunction *MF = getParent();
DebugLoc dl; // FIXME: this is nowhere