diff options
Diffstat (limited to 'lib/CodeGen/AggressiveAntiDepBreaker.cpp')
| -rw-r--r-- | lib/CodeGen/AggressiveAntiDepBreaker.cpp | 18 |
1 files changed, 1 insertions, 17 deletions
diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/lib/CodeGen/AggressiveAntiDepBreaker.cpp index 152d9fa3a7..c50f8b5a42 100644 --- a/lib/CodeGen/AggressiveAntiDepBreaker.cpp +++ b/lib/CodeGen/AggressiveAntiDepBreaker.cpp @@ -151,23 +151,7 @@ void AggressiveAntiDepBreaker::StartBlock(MachineBasicBlock *BB) { std::vector<unsigned> &KillIndices = State->GetKillIndices(); std::vector<unsigned> &DefIndices = State->GetDefIndices(); - // Determine the live-out physregs for this block. - if (IsReturnBlock) { - // 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) { - for (MCRegAliasIterator AI(*I, TRI, true); AI.isValid(); ++AI) { - unsigned Reg = *AI; - State->UnionGroups(Reg, 0); - KillIndices[Reg] = BB->size(); - DefIndices[Reg] = ~0u; - } - } - } - - // In a non-return block, examine the live-in regs of all successors. - // Note a return block can have successors if the return instruction is - // predicated. + // Examine the live-in regs of all successors. for (MachineBasicBlock::succ_iterator SI = BB->succ_begin(), SE = BB->succ_end(); SI != SE; ++SI) for (MachineBasicBlock::livein_iterator I = (*SI)->livein_begin(), |