diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/R600OptimizeVectorRegisters.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/R600OptimizeVectorRegisters.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Target/AMDGPU/R600OptimizeVectorRegisters.cpp b/llvm/lib/Target/AMDGPU/R600OptimizeVectorRegisters.cpp index a20319ea4f9d..ac11526da091 100644 --- a/llvm/lib/Target/AMDGPU/R600OptimizeVectorRegisters.cpp +++ b/llvm/lib/Target/AMDGPU/R600OptimizeVectorRegisters.cpp @@ -287,10 +287,10 @@ bool R600VectorRegMerger::tryMergeUsingFreeSlot(RegSeqInfo &RSI, RegSeqInfo &CompatibleRSI, std::vector<std::pair<unsigned, unsigned>> &RemapChan) { unsigned NeededUndefs = 4 - RSI.UndefReg.size(); - if (PreviousRegSeqByUndefCount[NeededUndefs].empty()) - return false; std::vector<MachineInstr *> &MIs = PreviousRegSeqByUndefCount[NeededUndefs]; + if (MIs.empty()) + return false; CompatibleRSI = PreviousRegSeq[MIs.back()]; tryMergeVector(&CompatibleRSI, &RSI, RemapChan); return true; |