private void TranslateStm(CJUMP stm)
{
if (stm.Left is CONST)
{
Temp.Temp r = TranslateExpr(stm.Right);
if (stm.Relop == CJUMP.Rel.Equal || stm.Relop == CJUMP.Rel.NotEqual)
{
InstrList.Add(new CJumpInt(stm.Relop, r, (stm.Left as CONST).Value, new Label(stm.IfTrue)));
}
else
{
InstrList.Add(new CJumpInt(CJUMP.NotRel(stm.Relop), r, (stm.Left as CONST).Value, new Label(stm.IfTrue)));
}
}
else if (stm.Right is CONST)
{
Temp.Temp l = TranslateExpr(stm.Left);
InstrList.Add(new CJumpInt(stm.Relop, l, (stm.Right as CONST).Value, new Label(stm.IfTrue)));
}
else
{
Temp.Temp l = TranslateExpr(stm.Left);
Temp.Temp r = TranslateExpr(stm.Right);
InstrList.Add(new CJump(stm.Relop, l, r, new Label(stm.IfTrue)));
}
}
void PrintStm(CJUMP s, int d)
{
Indent(d); Say("CJUMP(");
switch (s.Relop)
{
case CJUMP.Rel.Equal: Say("EQ"); break;
case CJUMP.Rel.NotEqual: Say("NE"); break;
case CJUMP.Rel.LessThan: Say("LT"); break;
case CJUMP.Rel.GreaterThan: Say("GT"); break;
case CJUMP.Rel.LessEqual: Say("LE"); break;
case CJUMP.Rel.GreaterEqual: Say("GE"); break;
case CJUMP.Rel.UnsignedLT: Say("ULT"); break;
case CJUMP.Rel.UnsignedLE: Say("ULE"); break;
case CJUMP.Rel.UnsignedGT: Say("UGT"); break;
case CJUMP.Rel.UnsignedGE: Say("UGE"); break;
default:
throw new FatalError("Print.PrintStm.CJUMP");
}
SayLn(","); PrintExp(s.Left, d + 1); SayLn(",");
PrintExp(s.Right, d + 1); SayLn(",");
Indent(d + 1); Say(s.IfTrue.ToString()); Say(",");
Say(s.IfFalse.ToString()); Say(")");
}
private void TranslateStm(CJUMP stm)
{
if (stm.Left is CONST)
{
Temp.Temp r = TranslateExpr(stm.Right);
if (stm.Relop == CJUMP.Rel.Equal || stm.Relop == CJUMP.Rel.NotEqual)
InstrList.Add(new CJumpInt(stm.Relop, r, (stm.Left as CONST).Value, new Label(stm.IfTrue)));
else
InstrList.Add(new CJumpInt(CJUMP.NotRel(stm.Relop), r, (stm.Left as CONST).Value, new Label(stm.IfTrue)));
}
else if (stm.Right is CONST)
{
Temp.Temp l = TranslateExpr(stm.Left);
InstrList.Add(new CJumpInt(stm.Relop, l, (stm.Right as CONST).Value, new Label(stm.IfTrue)));
}
else
{
Temp.Temp l = TranslateExpr(stm.Left);
Temp.Temp r = TranslateExpr(stm.Right);
InstrList.Add(new CJump(stm.Relop, l, r, new Label(stm.IfTrue)));
}
}
void PrintStm(CJUMP s, int d)
{
Indent(d); Say("CJUMP(");
switch (s.Relop)
{
case CJUMP.Rel.Equal: Say("EQ"); break;
case CJUMP.Rel.NotEqual: Say("NE"); break;
case CJUMP.Rel.LessThan: Say("LT"); break;
case CJUMP.Rel.GreaterThan: Say("GT"); break;
case CJUMP.Rel.LessEqual: Say("LE"); break;
case CJUMP.Rel.GreaterEqual: Say("GE"); break;
case CJUMP.Rel.UnsignedLT: Say("ULT"); break;
case CJUMP.Rel.UnsignedLE: Say("ULE"); break;
case CJUMP.Rel.UnsignedGT: Say("UGT"); break;
case CJUMP.Rel.UnsignedGE: Say("UGE"); break;
default:
throw new FatalError("Print.PrintStm.CJUMP");
}
SayLn(","); PrintExp(s.Left, d + 1); SayLn(",");
PrintExp(s.Right, d + 1); SayLn(",");
Indent(d + 1); Say(s.IfTrue.ToString()); Say(",");
Say(s.IfFalse.ToString()); Say(")");
}
public RelCx(CJUMP.Rel rel, Exp left, Exp right)
{
Relop = rel;
Left = left;
Right = right;
}
public CJumpInt(CJUMP.Rel rel, Temp.Temp left, int right, Label label)
{
Relop = rel;
Left = left;
Right = right;
Label = label;
}
public Exp TranslateRelExp(CJUMP.Rel op, Exp left, Exp right)
{
return new RelCx(op, left, right);
}
public Exp TranslateStringRelExp(CJUMP.Rel op, Exp left, Exp right)
{
Expr comp = Frame.ExternalCall("_strcmp", new Tree.ExpList(left.UnEx(), new Tree.ExpList(right.UnEx(), null)));
return new RelCx(op, new Ex(comp), new Ex(new CONST(0)));
}
