Not all custom inserters create new basic blocks. If the inserter
didn't create a new block, don't reset the insert position.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107813 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index f36620c..5f93e2f 100644
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -732,8 +732,11 @@
if (II.usesCustomInsertionHook()) {
// Insert this instruction into the basic block using a target
// specific inserter which may returns a new basic block.
- MBB = TLI->EmitInstrWithCustomInserter(MI, MBB);
- InsertPos = MBB->end();
+ MachineBasicBlock *NewMBB = TLI->EmitInstrWithCustomInserter(MI, MBB);
+ if (NewMBB != MBB) {
+ MBB = NewMBB;
+ InsertPos = NewMBB->end();
+ }
return;
}