35 if (ImpDef == Reg || (
MRI &&
MRI->isSubRegister(Reg, ImpDef)))
42 for (
int i = 0, e =
NumDefs; i != e; ++i)
43 if (
MI.getOperand(i).isReg() &&
MI.getOperand(i).getReg() &&
47 for (
int i =
NumOperands - 1, e =
MI.getNumOperands(); i != e; ++i)
48 if (
MI.getOperand(i).isReg() &&
unsigned const MachineRegisterInfo * MRI
Instances of this class represent a single low-level machine instruction.
bool isIndirectBranch() const
Return true if this is an indirect branch, such as a branch through a register.
bool hasDefOfPhysReg(const MCInst &MI, unsigned Reg, const MCRegisterInfo &RI) const
Return true if this instruction defines the specified physical register, either explicitly or implici...
unsigned short NumOperands
bool mayAffectControlFlow(const MCInst &MI, const MCRegisterInfo &RI) const
Return true if this is a branch or an instruction which directly writes to the program counter.
bool isBranch() const
Returns true if this is a conditional, unconditional, or indirect branch.
bool variadicOpsAreDefs() const
Return true if variadic operands of this instruction are definitions.
ArrayRef< MCPhysReg > implicit_defs() const
Return a list of registers that are potentially written by any instance of this machine instruction.
bool hasImplicitDefOfPhysReg(unsigned Reg, const MCRegisterInfo *MRI=nullptr) const
Return true if this instruction implicitly defines the specified physical register.
bool isCall() const
Return true if the instruction is a call.
bool isReturn() const
Return true if the instruction is a return.
MCRegisterInfo base class - We assume that the target defines a static array of MCRegisterDesc object...
MCRegister getProgramCounter() const
Return the register which is the program counter.
bool isSubRegisterEq(MCRegister RegA, MCRegister RegB) const
Returns true if RegB is a sub-register of RegA or if RegB == RegA.
This is an optimization pass for GlobalISel generic memory operations.