public FuncBuilderHints CloneSetValues(ReadOnlyDictionary newLiveLocalVariableNames,
ReadOnlyDictionary newVariableNameToRepresentation, PassTraits newPassTraits)
{
var result=Clone();
result.liveLocalVariableNames=newLiveLocalVariableNames;
result.VariableNameToRepresentation=newVariableNameToRepresentation;
result.PassTraits=newPassTraits;
return result;
}
public bool EqualTo(PassTraits other)
{
return this.PreserveLinkRegister==other.PreserveLinkRegister
&& this.Scratch0.EqualTo(other.Scratch0)
&& this.Scratch1.EqualTo(other.Scratch1)
&& this.Scratch0Used==other.Scratch0Used
&& this.Scratch1Used==other.Scratch1Used
&& this.RegisterMask==other.RegisterMask
&& this.AllocatedVariableOffset==other.AllocatedVariableOffset;
}
public bool EqualTo(PassTraits other)
{
return(this.PreserveLinkRegister == other.PreserveLinkRegister &&
this.Scratch0.EqualTo(other.Scratch0) &&
this.Scratch1.EqualTo(other.Scratch1) &&
this.Scratch0Used == other.Scratch0Used &&
this.Scratch1Used == other.Scratch1Used &&
this.RegisterMask == other.RegisterMask &&
this.AllocatedVariableOffset == other.AllocatedVariableOffset);
}
public FuncBuilderHints RunOptimizer(bool scratch0Used, bool scratch1Used, out bool runAgain)
{
var liveLocalNonParameterVariableNames=new Hashtable();
var usedRegisterMask=0;
foreach(TerminalName variableName in liveLocalVariableNames.Keys) {
var rep=(Representation)pinnedVariables[variableName];
if(rep==null) {
liveLocalNonParameterVariableNames.Add(variableName, null);
} else {
var register=rep as Register;
if(register!=null) {
usedRegisterMask|=1<<register.Index;
}
}
}
var allocableRegisterMask=((1<<Traits.NumAllocableRegisters)-1)&~usedRegisterMask;
var result=VariableAllocator.Run(liveLocalNonParameterVariableNames.Keys,
allocableRegisterMask,
BuilderHints.VariableNameToRepresentation);
var allUsedExcludingScratch=usedRegisterMask|result.UsedRegisterMask;
//The reason for this is that scratch0 and scratch1 must not interfere with the calling convention
var startingPoint=externalMethodWasInvoked ? 4 : 0;
LowRegister scratch0=null;
for(var i=startingPoint; i<Traits.NumLowRegisters; ++i) {
if((allUsedExcludingScratch&(1<<i))==0) {
var register=new LowRegister(i);
if(scratch0==null) {
scratch0=register;
} else {
var pt=new PassTraits(this.externalMethodWasInvoked, scratch0, register,
scratch0Used, scratch1Used, allUsedExcludingScratch, result.AllocatedVariableOffset);
runAgain=result.RunAgain || !pt.EqualTo(BuilderHints.PassTraits);
return BuilderHints.CloneSetValues(liveLocalVariableNames.AsReadOnlyDictionary(),
result.VariableNameToRepresentation, pt);
}
}
}
throw new Exception("never");
}
public FuncBuilderHints CloneSetValues(ReadOnlyDictionary newLiveLocalVariableNames,
ReadOnlyDictionary newVariableNameToRepresentation, PassTraits newPassTraits)
{
var result = Clone();
result.liveLocalVariableNames = newLiveLocalVariableNames;
result.VariableNameToRepresentation = newVariableNameToRepresentation;
result.PassTraits = newPassTraits;
return(result);
}
