diff options
| -rw-r--r-- | lib/CodeGen/CriticalAntiDepBreaker.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/CodeGen/CriticalAntiDepBreaker.cpp b/lib/CodeGen/CriticalAntiDepBreaker.cpp index 0751229f4e..8249505498 100644 --- a/lib/CodeGen/CriticalAntiDepBreaker.cpp +++ b/lib/CodeGen/CriticalAntiDepBreaker.cpp @@ -253,6 +253,17 @@ void CriticalAntiDepBreaker::ScanInstruction(MachineInstr *MI, // address updates. for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { MachineOperand &MO = MI->getOperand(i); + + if (MO.isRegMask()) + for (unsigned i = 0, e = TRI->getNumRegs(); i != e; ++i) + if (MO.clobbersPhysReg(i)) { + DefIndices[i] = Count; + KillIndices[i] = ~0u; + KeepRegs.erase(i); + Classes[i] = 0; + RegRefs.erase(i); + } + if (!MO.isReg()) continue; unsigned Reg = MO.getReg(); if (Reg == 0) continue; @@ -355,6 +366,9 @@ CriticalAntiDepBreaker::isNewRegClobberedByRefs(RegRefIter RegRefBegin, for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { const MachineOperand &CheckOper = MI->getOperand(i); + if (CheckOper.isRegMask() && CheckOper.clobbersPhysReg(NewReg)) + return true; + if (!CheckOper.isReg() || !CheckOper.isDef() || CheckOper.getReg() != NewReg) continue; |