public bool Optimize(ref List <Instruction> src)
{
int pushidx;
if (CurrentIndex == -1)
{
return(false);
}
Push OldPush = (Push)src[CurrentIndex];
pushidx = -1;
Pop OldPop = OptimizeUtils.GetLastPop(src, CurrentIndex - 1, ref pushidx);
if (OldPop == null)
{
return(false);
}
// check for same operands
if (OptimizeUtils.SameOperands(OldPop, OldPush))
{
src[CurrentIndex].Emit = false;
src[pushidx].Emit = false;
SamePushPop++;
Optimizer.OptimizationsSize += 3;
Optimizer.Optimizations++;
return(true);
}
return(true);
}
public bool Optimize(ref List <Instruction> src)
{
int pushidx;
if (CurrentIndex == -1)
{
return(false);
}
Mov OldMov = (Mov)src[CurrentIndex];
if (OldMov.DestinationIsIndirect && OldMov.SourceIsIndirect)
{
return(false);
}
// check for same operands
if (OptimizeUtils.SameOperands(OldMov))
{
src[CurrentIndex].Emit = false;
Optimizer.Optimizations++;
Optimizer.OptimizationsSize += 3;
SameMov++;
return(true);
}
return(true);
}
public bool Optimize(ref List <Instruction> src)
{
int pushidx;
if (CurrentIndex == -1)
{
return(false);
}
Pop OldPop = (Pop)src[CurrentIndex];
pushidx = -1;
Push OldPush = OptimizeUtils.GetLastPush(src, CurrentIndex - 1, ref pushidx);
if (OldPush == null)
{
return(false);
}
// check for same operands
if (OptimizeUtils.SameOperands(OldPop, OldPush))
{
src[CurrentIndex].Emit = false;
src[pushidx].Emit = false;
SamePushPop++;
Optimizer.OptimizationsSize += 6;
Optimizer.Optimizations++;
return(true);
}
if (OldPop.DestinationIsIndirect && OldPush.DestinationIsIndirect)
{
return(false);
}
// Transfer to mov dst,src
if (OptimizeUtils.CanTransfer(OldPush, OldPop))
{
src[CurrentIndex].Emit = false;
src[pushidx].Emit = false;
InstructionWithDestinationAndSourceAndSize mv = new Mov();
OptimizeUtils.CopyDestination((InstructionWithDestinationAndSize)OldPush, ref mv, true);
OptimizeUtils.CopyDestination((InstructionWithDestinationAndSize)OldPop, ref mv, false);
src[CurrentIndex] = mv;
src[pushidx] = null;
PushPopCount++;
Optimizer.OptimizationsSize += 3;
Optimizer.Optimizations++;
}
return(true);
}
