diff options
| -rw-r--r-- | llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp index 37352810c99..0b8efd84884 100644 --- a/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp +++ b/llvm/lib/Target/ARM/ARMLoadStoreOptimizer.cpp @@ -786,6 +786,7 @@ MachineInstr *ARMLoadStoreOpt::MergeOpsUpdate(const MergeCandidate &Cand) { SmallVector<std::pair<unsigned, bool>, 8> Regs; SmallVector<unsigned, 4> ImpDefs; DenseSet<unsigned> KilledRegs; + DenseSet<unsigned> UsedRegs; // Determine list of registers and list of implicit super-register defs. for (const MachineInstr *MI : Cand.Instrs) { const MachineOperand &MO = getLoadStoreRegOp(*MI); @@ -794,6 +795,7 @@ MachineInstr *ARMLoadStoreOpt::MergeOpsUpdate(const MergeCandidate &Cand) { if (IsKill) KilledRegs.insert(Reg); Regs.push_back(std::make_pair(Reg, IsKill)); + UsedRegs.insert(Reg); if (IsLoad) { // Collect any implicit defs of super-registers, after merging we can't @@ -883,7 +885,7 @@ MachineInstr *ARMLoadStoreOpt::MergeOpsUpdate(const MergeCandidate &Cand) { for (MachineOperand &MO : MI.uses()) { if (!MO.isReg() || !MO.isKill()) continue; - if (KilledRegs.count(MO.getReg())) + if (UsedRegs.count(MO.getReg())) MO.setIsKill(false); } } |
