diff options
Diffstat (limited to 'lib/CodeGen/TailDuplication.cpp')
| -rw-r--r-- | lib/CodeGen/TailDuplication.cpp | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp index 723a629..4377236 100644 --- a/lib/CodeGen/TailDuplication.cpp +++ b/lib/CodeGen/TailDuplication.cpp @@ -31,6 +31,7 @@ #include "llvm/Support/raw_ostream.h" #include "llvm/Target/TargetInstrInfo.h" #include "llvm/Target/TargetRegisterInfo.h" +#include "llvm/Target/TargetSubtargetInfo.h" using namespace llvm; #define DEBUG_TYPE "tailduplication" @@ -135,8 +136,8 @@ bool TailDuplicatePass::runOnMachineFunction(MachineFunction &MF) { if (skipOptnoneFunction(*MF.getFunction())) return false; - TII = MF.getTarget().getInstrInfo(); - TRI = MF.getTarget().getRegisterInfo(); + TII = MF.getSubtarget().getInstrInfo(); + TRI = MF.getSubtarget().getRegisterInfo(); MRI = &MF.getRegInfo(); MMI = getAnalysisIfAvailable<MachineModuleInfo>(); MBPI = &getAnalysis<MachineBranchProbabilityInfo>(); @@ -798,11 +799,9 @@ TailDuplicatePass::TailDuplicate(MachineBasicBlock *TailBB, RS->enterBasicBlock(PredBB); if (!PredBB->empty()) RS->forward(std::prev(PredBB->end())); - BitVector RegsLiveAtExit(TRI->getNumRegs()); - RS->getRegsUsed(RegsLiveAtExit, false); for (MachineBasicBlock::livein_iterator I = TailBB->livein_begin(), E = TailBB->livein_end(); I != E; ++I) { - if (!RegsLiveAtExit[*I]) + if (!RS->isRegUsed(*I, false)) // If a register is previously livein to the tail but it's not live // at the end of predecessor BB, then it should be added to its // livein list. |