diff options
| -rw-r--r-- | lib/CodeGen/AggressiveAntiDepBreaker.cpp | 45 |
1 files changed, 14 insertions, 31 deletions
diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/lib/CodeGen/AggressiveAntiDepBreaker.cpp index 5a634d6ccb..b520d8fced 100644 --- a/lib/CodeGen/AggressiveAntiDepBreaker.cpp +++ b/lib/CodeGen/AggressiveAntiDepBreaker.cpp @@ -155,16 +155,11 @@ void AggressiveAntiDepBreaker::StartBlock(MachineBasicBlock *BB) { // In a return block, examine the function live-out regs. for (MachineRegisterInfo::liveout_iterator I = MRI.liveout_begin(), E = MRI.liveout_end(); I != E; ++I) { - unsigned Reg = *I; - State->UnionGroups(Reg, 0); - KillIndices[Reg] = BB->size(); - DefIndices[Reg] = ~0u; - // Repeat, for all aliases. - for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias) { - unsigned AliasReg = *Alias; - State->UnionGroups(AliasReg, 0); - KillIndices[AliasReg] = BB->size(); - DefIndices[AliasReg] = ~0u; + for (const unsigned *Alias = TRI->getOverlaps(*I); + unsigned Reg = *Alias; ++Alias) { + State->UnionGroups(Reg, 0); + KillIndices[Reg] = BB->size(); + DefIndices[Reg] = ~0u; } } } @@ -176,16 +171,11 @@ void AggressiveAntiDepBreaker::StartBlock(MachineBasicBlock *BB) { SE = BB->succ_end(); SI != SE; ++SI) for (MachineBasicBlock::livein_iterator I = (*SI)->livein_begin(), E = (*SI)->livein_end(); I != E; ++I) { - unsigned Reg = *I; - State->UnionGroups(Reg, 0); - KillIndices[Reg] = BB->size(); - DefIndices[Reg] = ~0u; - // Repeat, for all aliases. - for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias) { - unsigned AliasReg = *Alias; - State->UnionGroups(AliasReg, 0); - KillIndices[AliasReg] = BB->size(); - DefIndices[AliasReg] = ~0u; + for (const unsigned *Alias = TRI->getOverlaps(*I); + unsigned Reg = *Alias; ++Alias) { + State->UnionGroups(Reg, 0); + KillIndices[Reg] = BB->size(); + DefIndices[Reg] = ~0u; } } @@ -197,12 +187,8 @@ void AggressiveAntiDepBreaker::StartBlock(MachineBasicBlock *BB) { for (const unsigned *I = TRI->getCalleeSavedRegs(); *I; ++I) { unsigned Reg = *I; if (!IsReturnBlock && !Pristine.test(Reg)) continue; - State->UnionGroups(Reg, 0); - KillIndices[Reg] = BB->size(); - DefIndices[Reg] = ~0u; - // Repeat, for all aliases. - for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias) { - unsigned AliasReg = *Alias; + for (const unsigned *Alias = TRI->getOverlaps(Reg); + unsigned AliasReg = *Alias; ++Alias) { State->UnionGroups(AliasReg, 0); KillIndices[AliasReg] = BB->size(); DefIndices[AliasReg] = ~0u; @@ -435,12 +421,9 @@ void AggressiveAntiDepBreaker::PrescanInstruction(MachineInstr *MI, continue; // Update def for Reg and aliases. - DefIndices[Reg] = Count; - for (const unsigned *Alias = TRI->getAliasSet(Reg); - *Alias; ++Alias) { - unsigned AliasReg = *Alias; + for (const unsigned *Alias = TRI->getOverlaps(Reg); + unsigned AliasReg = *Alias; ++Alias) DefIndices[AliasReg] = Count; - } } } |