[LoopPeel] Insert new phis before first non-PHI when peeling last iter.

Make sure the new phis are inserted before any non-phi instructions.
This fixes a crash when dbg_value instructions are present in the
original exit block.

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/Utils/LoopPeel.cpp b/llvm/lib/Transforms/Utils/LoopPeel.cpp
index e1dc052..4d43c6a 100644
--- a/llvm/lib/Transforms/Utils/LoopPeel.cpp
+++ b/llvm/lib/Transforms/Utils/LoopPeel.cpp
@@ -922,7 +922,7 @@ static void cloneLoopBlocks(
     // InsertTop, using the incoming value from the preheader for the original
     // preheader (when skipping the main loop) and the incoming value from the
     // latch for the latch (when continuing from the main loop).
-    IRBuilder<> B(InsertTop->getTerminator());
+    IRBuilder<> B(InsertTop, InsertTop->getFirstNonPHIIt());
     for (BasicBlock::iterator I = Header->begin(); isa<PHINode>(I); ++I) {
       PHINode *NewPHI = cast<PHINode>(VMap[&*I]);
       PHINode *PN = B.CreatePHI(NewPHI->getType(), 2);