vendor/llvm/llvm-r126547

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/Target/ARM/Thumb2InstrInfo.cpp b/lib/Target/ARM/Thumb2InstrInfo.cpp
index 2f67257f8fa1..9b1073be3c8e 100644
--- a/lib/Target/ARM/Thumb2InstrInfo.cpp
+++ b/lib/Target/ARM/Thumb2InstrInfo.cpp
@@ -95,6 +95,12 @@ Thumb2InstrInfo::ReplaceTailWithBranchTo(MachineBasicBlock::iterator Tail,
 bool
 Thumb2InstrInfo::isLegalToSplitMBBAt(MachineBasicBlock &MBB,
                                      MachineBasicBlock::iterator MBBI) const {
+  while (MBBI->isDebugValue()) {
+    ++MBBI;
+    if (MBBI == MBB.end())
+      return false;
+  }
+
   unsigned PredReg = 0;
   return llvm::getITInstrPredicate(MBBI, PredReg) == ARMCC::AL;
 }