bool SIInsertWaits::isOpRelevant(MachineOperand &Op) {
// Constants are always irrelevant
if (!Op.isReg())
return false;
// Defines are always relevant
if (Op.isDef())
return true;
// For exports all registers are relevant
MachineInstr &MI = *Op.getParent();
if (MI.getOpcode() == AMDGPU::EXP)
return true;
// For stores the stored value is also relevant
if (!MI.getDesc().mayStore())
return false;
// Check if this operand is the value being stored.
// Special case for DS instructions, since the address
// operand comes before the value operand and it may have
// multiple data operands.
if (TII->isDS(MI.getOpcode())) {
MachineOperand *Data = TII->getNamedOperand(MI, AMDGPU::OpName::data);
if (Data && Op.isIdenticalTo(*Data))
return true;
MachineOperand *Data0 = TII->getNamedOperand(MI, AMDGPU::OpName::data0);
if (Data0 && Op.isIdenticalTo(*Data0))
return true;
MachineOperand *Data1 = TII->getNamedOperand(MI, AMDGPU::OpName::data1);
if (Data1 && Op.isIdenticalTo(*Data1))
return true;
return false;
}
// NOTE: This assumes that the value operand is before the
// address operand, and that there is only one value operand.
for (MachineInstr::mop_iterator I = MI.operands_begin(),
E = MI.operands_end(); I != E; ++I) {
if (I->isReg() && I->isUse())
return Op.isIdenticalTo(*I);
}
return false;
}
bool SIInsertWaits::isOpRelevant(MachineOperand &Op) {
// Constants are always irrelevant
if (!Op.isReg())
return false;
// Defines are always relevant
if (Op.isDef())
return true;
// For exports all registers are relevant
MachineInstr &MI = *Op.getParent();
if (MI.getOpcode() == AMDGPU::EXP)
return true;
// For stores the stored value is also relevant
if (!MI.getDesc().mayStore())
return false;
for (MachineInstr::mop_iterator I = MI.operands_begin(),
E = MI.operands_end(); I != E; ++I) {
if (I->isReg() && I->isUse())
return Op.isIdenticalTo(*I);
}
return false;
}
bool OptimizeLEAPass::isIdenticalOp(const MachineOperand &MO1,
const MachineOperand &MO2) {
return MO1.isIdenticalTo(MO2) &&
(!MO1.isReg() ||
!TargetRegisterInfo::isPhysicalRegister(MO1.getReg()));
}
static inline bool isIdenticalOp(const MachineOperand &MO1,
const MachineOperand &MO2) {
return MO1.isIdenticalTo(MO2) &&
(!MO1.isReg() ||
!TargetRegisterInfo::isPhysicalRegister(MO1.getReg()));
}