diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopSink.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopSink.cpp b/llvm/lib/Transforms/Scalar/LoopSink.cpp index db502e1c5db..ce6ecea2dc2 100644 --- a/llvm/lib/Transforms/Scalar/LoopSink.cpp +++ b/llvm/lib/Transforms/Scalar/LoopSink.cpp @@ -202,6 +202,13 @@ static bool sinkInstruction(Loop &L, Instruction &I, if (BBsToSinkInto.empty()) return false; + // Return if any of the candidate blocks to sink into is non-cold. + if (BBsToSinkInto.size() > 1) { + for (auto *BB : BBsToSinkInto) + if (!LoopBlockNumber.count(BB)) + return false; + } + // Copy the final BBs into a vector and sort them using the total ordering // of the loop block numbers as iterating the set doesn't give a useful // order. No need to stable sort as the block numbers are a total ordering. |
