Normalize successors' probabilities when building MBBs for jump table.

llvm-svn: 254837

1 files changed, 2 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 85e7e3c1bc8..867b9562019 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -8259,12 +8259,14 @@ void SelectionDAGBuilder::lowerWorkItem(SwitchWorkListItem W, Value *Cond,
             JumpProb += DefaultProb / 2;
             FallthroughProb -= DefaultProb / 2;
             JumpMBB->setSuccProbability(SI, DefaultProb / 2);
+            JumpMBB->normalizeSuccProbs();
             break;
           }
         }
 
         addSuccessorWithProb(CurMBB, Fallthrough, FallthroughProb);
         addSuccessorWithProb(CurMBB, JumpMBB, JumpProb);
+        CurMBB->normalizeSuccProbs();
 
         // The jump table header will be inserted in our current block, do the
         // range check, and fall through to our fallthrough block.