Vendor import of llvm trunk r240225:vendor/llvm/llvm-trunk-r240225

https://llvm.org/svn/llvm-project/llvm/trunk@240225

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/IR/BasicBlock.cpp b/lib/IR/BasicBlock.cpp
index 70ae3c398423..77cb10d5b6ba 100644
--- a/lib/IR/BasicBlock.cpp
+++ b/lib/IR/BasicBlock.cpp
@@ -362,12 +362,15 @@ BasicBlock *BasicBlock::splitBasicBlock(iterator I, const Twine &BBName) {
   BasicBlock *New = BasicBlock::Create(getContext(), BBName,
                                        getParent(), InsertBefore);
 
+  // Save DebugLoc of split point before invalidating iterator.
+  DebugLoc Loc = I->getDebugLoc();
   // Move all of the specified instructions from the original basic block into
   // the new basic block.
   New->getInstList().splice(New->end(), this->getInstList(), I, end());
 
   // Add a branch instruction to the newly formed basic block.
-  BranchInst::Create(New, this);
+  BranchInst *BI = BranchInst::Create(New, this);
+  BI->setDebugLoc(Loc);
 
   // Now we must loop through all of the successors of the New block (which
   // _were_ the successors of the 'this' block), and update any PHI nodes in