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Implement PowerPCInstrInfo::isMoveInstr(), patch by Nate Begeman

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14898 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2004-07-16 20:51:55 +00:00
parent 6b4ea88e83
commit 01d46e9c55
1 changed files with 29 additions and 0 deletions
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29
lib/Target/PowerPC/PowerPCInstrInfo.cpp
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@ -15,8 +15,37 @@
#include "PowerPC.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "PowerPCGenInstrInfo.inc"
#include <iostream>
using namespace llvm;
PowerPCInstrInfo::PowerPCInstrInfo()
: TargetInstrInfo(PowerPCInsts, sizeof(PowerPCInsts)/sizeof(PowerPCInsts[0])){
}
bool PowerPCInstrInfo::isMoveInstr(const MachineInstr& MI,
unsigned& sourceReg,
unsigned& destReg) const {
MachineOpCode oc = MI.getOpcode();
if (oc == PPC32::OR) {
assert(MI.getNumOperands() == 3 &&
MI.getOperand(0).isRegister() &&
MI.getOperand(1).isRegister() &&
MI.getOperand(2).isRegister() &&
"invalid register-register int move instruction");
if (MI.getOperand(1).getReg() == MI.getOperand(2).getReg()) {
sourceReg = MI.getOperand(1).getReg();
destReg = MI.getOperand(0).getReg();
return true;
}
}
else if (oc == PPC32::FMR) {
assert(MI.getNumOperands() == 2 &&
MI.getOperand(0).isRegister() &&
MI.getOperand(1).isRegister() &&
"invalid register-register fp move instruction");
sourceReg = MI.getOperand(1).getReg();
destReg = MI.getOperand(0).getReg();
return true;
}
return false;
}