diff options
| -rw-r--r-- | lib/CodeGen/LiveVariables.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp index 9c3d255364..48e1e4cdad 100644 --- a/lib/CodeGen/LiveVariables.cpp +++ b/lib/CodeGen/LiveVariables.cpp @@ -109,6 +109,7 @@ void LiveVariables::MarkVirtRegAliveInBlock(VarInfo& VRInfo, // Mark the variable known alive in this bb VRInfo.AliveBlocks.set(BBNum); + assert(MBB != &MF->front() && "Can't find reaching def for virtreg"); WorkList.insert(WorkList.end(), MBB->pred_rbegin(), MBB->pred_rend()); } |