public Instruction Create(OpCode opcode, int i)
{
if (opcode.OperandType == OperandType.InlineVar)
{
return(Create(opcode, m_mbody.Variables [i]));
}
if (opcode.OperandType == OperandType.InlineParam)
{
return(Create(opcode, CodeReader.GetParameter(m_mbody, i)));
}
if (opcode.OperandType != OperandType.InlineI)
{
throw new ArgumentException("opcode");
}
return(FinalCreate(opcode, i));
}
public Instruction Create(OpCode opcode, byte b)
{
if (opcode.OperandType == OperandType.ShortInlineVar)
{
return(Create(opcode, m_mbody.Variables [b]));
}
if (opcode.OperandType == OperandType.ShortInlineParam)
{
return(Create(opcode, CodeReader.GetParameter(m_mbody, b)));
}
if (opcode.OperandType != OperandType.ShortInlineI ||
opcode == OpCodes.Ldc_I4_S)
{
throw new ArgumentException("opcode");
}
return(FinalCreate(opcode, b));
}
public void Simplify()
{
foreach (Instruction i in this.Instructions)
{
if (i.OpCode.OpCodeType != OpCodeType.Macro)
{
continue;
}
switch (i.OpCode.Code)
{
case Code.Ldarg_0:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 0));
break;
case Code.Ldarg_1:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 1));
break;
case Code.Ldarg_2:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 2));
break;
case Code.Ldarg_3:
Modify(i, OpCodes.Ldarg,
CodeReader.GetParameter(this, 3));
break;
case Code.Ldloc_0:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 0));
break;
case Code.Ldloc_1:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 1));
break;
case Code.Ldloc_2:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 2));
break;
case Code.Ldloc_3:
Modify(i, OpCodes.Ldloc,
CodeReader.GetVariable(this, 3));
break;
case Code.Stloc_0:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 0));
break;
case Code.Stloc_1:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 1));
break;
case Code.Stloc_2:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 2));
break;
case Code.Stloc_3:
Modify(i, OpCodes.Stloc,
CodeReader.GetVariable(this, 3));
break;
case Code.Ldarg_S:
i.OpCode = OpCodes.Ldarg;
break;
case Code.Ldarga_S:
i.OpCode = OpCodes.Ldarga;
break;
case Code.Starg_S:
i.OpCode = OpCodes.Starg;
break;
case Code.Ldloc_S:
i.OpCode = OpCodes.Ldloc;
break;
case Code.Ldloca_S:
i.OpCode = OpCodes.Ldloca;
break;
case Code.Stloc_S:
i.OpCode = OpCodes.Stloc;
break;
case Code.Ldc_I4_M1:
Modify(i, OpCodes.Ldc_I4, -1);
break;
case Code.Ldc_I4_0:
Modify(i, OpCodes.Ldc_I4, 0);
break;
case Code.Ldc_I4_1:
Modify(i, OpCodes.Ldc_I4, 1);
break;
case Code.Ldc_I4_2:
Modify(i, OpCodes.Ldc_I4, 2);
break;
case Code.Ldc_I4_3:
Modify(i, OpCodes.Ldc_I4, 3);
break;
case Code.Ldc_I4_4:
Modify(i, OpCodes.Ldc_I4, 4);
break;
case Code.Ldc_I4_5:
Modify(i, OpCodes.Ldc_I4, 5);
break;
case Code.Ldc_I4_6:
Modify(i, OpCodes.Ldc_I4, 6);
break;
case Code.Ldc_I4_7:
Modify(i, OpCodes.Ldc_I4, 7);
break;
case Code.Ldc_I4_8:
Modify(i, OpCodes.Ldc_I4, 8);
break;
case Code.Ldc_I4_S:
i.OpCode = OpCodes.Ldc_I4;
i.Operand = (int)(sbyte)i.Operand;
break;
case Code.Br_S:
i.OpCode = OpCodes.Br;
break;
case Code.Brfalse_S:
i.OpCode = OpCodes.Brfalse;
break;
case Code.Brtrue_S:
i.OpCode = OpCodes.Brtrue;
break;
case Code.Beq_S:
i.OpCode = OpCodes.Beq;
break;
case Code.Bge_S:
i.OpCode = OpCodes.Bge;
break;
case Code.Bgt_S:
i.OpCode = OpCodes.Bgt;
break;
case Code.Ble_S:
i.OpCode = OpCodes.Ble;
break;
case Code.Blt_S:
i.OpCode = OpCodes.Blt;
break;
case Code.Bne_Un_S:
i.OpCode = OpCodes.Bne_Un;
break;
case Code.Bge_Un_S:
i.OpCode = OpCodes.Bge_Un;
break;
case Code.Bgt_Un_S:
i.OpCode = OpCodes.Bgt_Un;
break;
case Code.Ble_Un_S:
i.OpCode = OpCodes.Ble_Un;
break;
case Code.Blt_Un_S:
i.OpCode = OpCodes.Blt_Un;
break;
case Code.Leave_S:
i.OpCode = OpCodes.Leave;
break;
}
}
}
