private void VisitInstr(ILInstrList instrs, ILInstruction instr, ref int index, ILPostTransformer tr)
{
if (instr.OpCode != ILOpCode.__BEGINCALL && instr.OpCode != ILOpCode.__ENDCALL)
{
return;
}
var callInfo = (InstrCallInfo)instr.Annotation;
if (callInfo.IsECall)
{
instrs.RemoveAt(index);
index--;
return;
}
var saving = new HashSet <DarksVMRegisters>(saveRegs);
var retVar = (IRVariable)callInfo.ReturnValue;
// R0 = return register, need to save if retVar register is not R0
//Debug.Assert(!(retVar == null ^ (callInfo.ReturnRegister == null ^ callInfo.ReturnSlot == null)));
if (retVar != null)
{
if (callInfo.ReturnSlot == null)
{
var retReg = callInfo.ReturnRegister.Register;
saving.Remove(retReg);
if (retReg != DarksVMRegisters.R0)
{
saving.Add(DarksVMRegisters.R0);
}
}
else
{
saving.Add(DarksVMRegisters.R0);
}
}
else
{
saving.Add(DarksVMRegisters.R0);
}
if (instr.OpCode == ILOpCode.__BEGINCALL)
{
instrs.Replace(index, saving
.Select(reg => new ILInstruction(ILOpCode.PUSHR_OBJECT, ILRegister.LookupRegister(reg), instr)));
}
else
{
instrs.Replace(index, saving
.Select(reg => new ILInstruction(ILOpCode.POP, ILRegister.LookupRegister(reg), instr))
.Reverse());
}
index--;
}
private void VisitInstr(ILInstrList instrs, ILInstruction instr, ref int index, ILTransformer tr)
{
if (instr.OpCode == ILOpCode.__ENTRY)
{
instrs.RemoveAt(index);
index--;
}
else if (instr.OpCode == ILOpCode.__EXIT)
{
instrs[index] = new ILInstruction(ILOpCode.RET, null, instr);
}
}
void VisitInstr(ILInstrList instrs, ILInstruction instr, ref int index, ILPostTransformer tr)
{
if (instr.OpCode != ILOpCode.__BEGINCALL && instr.OpCode != ILOpCode.__ENDCALL)
{
return;
}
var callInfo = (InstrCallInfo)instr.Annotation;
if (callInfo.IsECall)
{
instrs.RemoveAt(index);
index--;
return;
}
var saving = new HashSet <VMRegisters>(saveRegs);
var retVar = (IRVariable)callInfo.ReturnValue;
// R0 = return register, need to save if retVar register is not R07
if (retVar == null ^ (callInfo.ReturnRegister == null ^ callInfo.ReturnSlot == null))
{
ConsoleColor c = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Debug.Assert [SaveRegistersTransform.cs] L36");
Console.WriteLine($"Method target->{callInfo.Method.FullName}");
Console.ForegroundColor = c;
}
if (retVar != null)
{
if (callInfo.ReturnSlot == null)
{
var retReg = callInfo.ReturnRegister.Register;
saving.Remove(retReg);
if (retReg != VMRegisters.R0)
{
saving.Add(VMRegisters.R0);
}
}
else
{
saving.Add(VMRegisters.R0);
}
}
else
{
saving.Add(VMRegisters.R0);
}
if (instr.OpCode == ILOpCode.__BEGINCALL)
{
instrs.Replace(index, saving
.Select(reg => new ILInstruction(ILOpCode.PUSHR_OBJECT, ILRegister.LookupRegister(reg), instr)));
}
else
{
instrs.Replace(index, saving
.Select(reg => new ILInstruction(ILOpCode.POP, ILRegister.LookupRegister(reg), instr))
.Reverse());
}
index--;
}