diff options
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 0d37c62660d..f8cbcaa0d65 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -1984,10 +1984,10 @@ bool SelectionDAGBuilder::handleSmallSwitchRange(CaseRec& CR, } } } - // Rearrange the case blocks so that the last one falls through if possible. Case &BackCase = *(CR.Range.second-1); - if (NextBlock && Default != NextBlock && BackCase.BB != NextBlock) { + if (Size > 1 && + NextBlock && Default != NextBlock && BackCase.BB != NextBlock) { // The last case block won't fall through into 'NextBlock' if we emit the // branches in this order. See if rearranging a case value would help. // We start at the bottom as it's the case with the least weight. |
