diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineCSE.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp index 3a8c80c..89f4ffc 100644 --- a/llvm/lib/CodeGen/MachineCSE.cpp +++ b/llvm/lib/CodeGen/MachineCSE.cpp @@ -265,8 +265,10 @@ bool MachineCSE::isPhysDefTriviallyDead( } static bool isCallerPreservedOrConstPhysReg(MCRegister Reg, + const MachineOperand &MO, const MachineFunction &MF, - const TargetRegisterInfo &TRI) { + const TargetRegisterInfo &TRI, + const TargetInstrInfo &TII) { // MachineRegisterInfo::isConstantPhysReg directly called by // MachineRegisterInfo::isCallerPreservedOrConstPhysReg expects the // reserved registers to be frozen. That doesn't cause a problem post-ISel as @@ -275,7 +277,7 @@ static bool isCallerPreservedOrConstPhysReg(MCRegister Reg, // It does cause issues mid-GlobalISel, however, hence the additional // reservedRegsFrozen check. const MachineRegisterInfo &MRI = MF.getRegInfo(); - return TRI.isCallerPreservedPhysReg(Reg, MF) || + return TRI.isCallerPreservedPhysReg(Reg, MF) || TII.isIgnorableUse(MO) || (MRI.reservedRegsFrozen() && MRI.isConstantPhysReg(Reg)); } @@ -298,7 +300,8 @@ bool MachineCSE::hasLivePhysRegDefUses(const MachineInstr *MI, if (Register::isVirtualRegister(Reg)) continue; // Reading either caller preserved or constant physregs is ok. - if (!isCallerPreservedOrConstPhysReg(Reg.asMCReg(), *MI->getMF(), *TRI)) + if (!isCallerPreservedOrConstPhysReg(Reg.asMCReg(), MO, *MI->getMF(), *TRI, + *TII)) for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) PhysRefs.insert(*AI); } |