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Added findRegisterDefOperand().

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llvm-svn: 34380
This commit is contained in:
Evan Cheng 2007-02-17 11:10:18 +00:00
parent 897d82c747
commit 35f59a6dd2
2 changed files with 15 additions and 0 deletions
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4
include/llvm/CodeGen/MachineInstr.h
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@ -393,6 +393,10 @@ public:
/// the specific register or NULL if it is not found.
MachineOperand *findRegisterUseOperand(unsigned Reg);
/// findRegisterDefOperand() - Returns the MachineOperand that is a def of
/// the specific register or NULL if it is not found.
MachineOperand *findRegisterDefOperand(unsigned Reg);
/// copyKillDeadInfo - Copies kill / dead operand properties from MI.
///
void copyKillDeadInfo(const MachineInstr *MI);

11
lib/CodeGen/MachineInstr.cpp
View File

@ -180,6 +180,17 @@ MachineOperand *MachineInstr::findRegisterUseOperand(unsigned Reg) {
return NULL;
}
/// findRegisterDefOperand() - Returns the MachineOperand that is a def of
/// the specific register or NULL if it is not found.
MachineOperand *MachineInstr::findRegisterDefOperand(unsigned Reg) {
for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
MachineOperand &MO = getOperand(i);
if (MO.isReg() && MO.isDef() && MO.getReg() == Reg)
return &MO;
}
return NULL;
}
/// copyKillDeadInfo - Copies kill / dead operand properties from MI.
///
void MachineInstr::copyKillDeadInfo(const MachineInstr *MI) {