private static void OptimizeBranches(MethodBody body)
{
MethodBodyRocks.ComputeOffsets(body);
foreach (Instruction instruction in body.Instructions)
{
if (instruction.OpCode.OperandType != OperandType.InlineBrTarget || !MethodBodyRocks.OptimizeBranch(instruction))
{
continue;
}
MethodBodyRocks.ComputeOffsets(body);
}
}
public static void SimplifyMacros(this MethodBody self)
{
if (self == null)
{
throw new ArgumentNullException("self");
}
Label1:
foreach (Instruction instruction in self.Instructions)
{
if (instruction.OpCode.OpCodeType != OpCodeType.Macro)
{
continue;
}
Code code = instruction.OpCode.Code;
switch (code)
{
case Code.Ldarg_0:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldarg, self.GetParameter(0));
continue;
}
case Code.Ldarg_1:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldarg, self.GetParameter(1));
continue;
}
case Code.Ldarg_2:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldarg, self.GetParameter(2));
continue;
}
case Code.Ldarg_3:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldarg, self.GetParameter(3));
continue;
}
case Code.Ldloc_0:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldloc, self.Variables[0]);
continue;
}
case Code.Ldloc_1:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldloc, self.Variables[1]);
continue;
}
case Code.Ldloc_2:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldloc, self.Variables[2]);
continue;
}
case Code.Ldloc_3:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldloc, self.Variables[3]);
continue;
}
case Code.Stloc_0:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Stloc, self.Variables[0]);
continue;
}
case Code.Stloc_1:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Stloc, self.Variables[1]);
continue;
}
case Code.Stloc_2:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Stloc, self.Variables[2]);
continue;
}
case Code.Stloc_3:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Stloc, self.Variables[3]);
continue;
}
case Code.Ldarg_S:
{
instruction.OpCode = OpCodes.Ldarg;
continue;
}
case Code.Ldarga_S:
{
instruction.OpCode = OpCodes.Ldarga;
continue;
}
case Code.Starg_S:
{
instruction.OpCode = OpCodes.Starg;
continue;
}
case Code.Ldloc_S:
{
instruction.OpCode = OpCodes.Ldloc;
continue;
}
case Code.Ldloca_S:
{
instruction.OpCode = OpCodes.Ldloca;
continue;
}
case Code.Stloc_S:
{
instruction.OpCode = OpCodes.Stloc;
continue;
}
case Code.Ldnull:
case Code.Ldc_I4:
case Code.Ldc_I8:
case Code.Ldc_R4:
case Code.Ldc_R8:
case Code.Dup:
case Code.Pop:
case Code.Jmp:
case Code.Call:
case Code.Calli:
case Code.Ret:
{
continue;
}
case Code.Ldc_I4_M1:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, -1);
continue;
}
case Code.Ldc_I4_0:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 0);
continue;
}
case Code.Ldc_I4_1:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 1);
continue;
}
case Code.Ldc_I4_2:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 2);
continue;
}
case Code.Ldc_I4_3:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 3);
continue;
}
case Code.Ldc_I4_4:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 4);
continue;
}
case Code.Ldc_I4_5:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 5);
continue;
}
case Code.Ldc_I4_6:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 6);
continue;
}
case Code.Ldc_I4_7:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 7);
continue;
}
case Code.Ldc_I4_8:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, 8);
continue;
}
case Code.Ldc_I4_S:
{
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4, (int)((sbyte)instruction.Operand));
continue;
}
case Code.Br_S:
{
instruction.OpCode = OpCodes.Br;
continue;
}
case Code.Brfalse_S:
{
instruction.OpCode = OpCodes.Brfalse;
continue;
}
case Code.Brtrue_S:
{
instruction.OpCode = OpCodes.Brtrue;
continue;
}
case Code.Beq_S:
{
instruction.OpCode = OpCodes.Beq;
continue;
}
case Code.Bge_S:
{
instruction.OpCode = OpCodes.Bge;
continue;
}
case Code.Bgt_S:
{
instruction.OpCode = OpCodes.Bgt;
continue;
}
case Code.Ble_S:
{
instruction.OpCode = OpCodes.Ble;
continue;
}
case Code.Blt_S:
{
instruction.OpCode = OpCodes.Blt;
continue;
}
case Code.Bne_Un_S:
{
instruction.OpCode = OpCodes.Bne_Un;
continue;
}
case Code.Bge_Un_S:
{
instruction.OpCode = OpCodes.Bge_Un;
continue;
}
case Code.Bgt_Un_S:
{
instruction.OpCode = OpCodes.Bgt_Un;
continue;
}
case Code.Ble_Un_S:
{
instruction.OpCode = OpCodes.Ble_Un;
continue;
}
case Code.Blt_Un_S:
{
instruction.OpCode = OpCodes.Blt_Un;
continue;
}
default:
{
if (code == Code.Leave_S)
{
break;
}
else
{
goto Label1;
}
}
}
instruction.OpCode = OpCodes.Leave;
}
}
public static void OptimizeMacros(this MethodBody self)
{
int index;
if (self == null)
{
throw new ArgumentNullException("self");
}
MethodDefinition method = self.Method;
foreach (Instruction instruction in self.Instructions)
{
Code code = instruction.OpCode.Code;
if (code == Code.Ldc_I4)
{
int operand = (int)instruction.Operand;
switch (operand)
{
case -1:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_M1);
continue;
}
case 0:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_0);
continue;
}
case 1:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_1);
continue;
}
case 2:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_2);
continue;
}
case 3:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_3);
continue;
}
case 4:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_4);
continue;
}
case 5:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_5);
continue;
}
case 6:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_6);
continue;
}
case 7:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_7);
continue;
}
case 8:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldc_I4_8);
continue;
}
}
if (operand < -128 || operand >= 128)
{
continue;
}
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldc_I4_S, (sbyte)operand);
}
else
{
switch (code)
{
case Code.Ldarg:
{
index = ((ParameterDefinition)instruction.Operand).Index;
if (index == -1 && instruction.Operand == self.ThisParameter)
{
index = 0;
}
else if (method.HasThis)
{
index++;
}
switch (index)
{
case 0:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldarg_0);
continue;
}
case 1:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldarg_1);
continue;
}
case 2:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldarg_2);
continue;
}
case 3:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldarg_3);
continue;
}
}
if (index >= 256)
{
continue;
}
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldarg_S, instruction.Operand);
continue;
}
case Code.Ldarga:
{
index = ((ParameterDefinition)instruction.Operand).Index;
if (index == -1 && instruction.Operand == self.ThisParameter)
{
index = 0;
}
else if (method.HasThis)
{
index++;
}
if (index >= 256)
{
continue;
}
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldarga_S, instruction.Operand);
continue;
}
case Code.Ldloc:
{
index = ((VariableDefinition)instruction.Operand).Index;
switch (index)
{
case 0:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldloc_0);
continue;
}
case 1:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldloc_1);
continue;
}
case 2:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldloc_2);
continue;
}
case 3:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Ldloc_3);
continue;
}
}
if (index >= 256)
{
continue;
}
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldloc_S, instruction.Operand);
continue;
}
case Code.Ldloca:
{
if (((VariableDefinition)instruction.Operand).Index >= 256)
{
continue;
}
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Ldloca_S, instruction.Operand);
continue;
}
case Code.Stloc:
{
index = ((VariableDefinition)instruction.Operand).Index;
switch (index)
{
case 0:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Stloc_0);
continue;
}
case 1:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Stloc_1);
continue;
}
case 2:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Stloc_2);
continue;
}
case 3:
{
MethodBodyRocks.MakeMacro(instruction, OpCodes.Stloc_3);
continue;
}
}
if (index >= 256)
{
continue;
}
MethodBodyRocks.ExpandMacro(instruction, OpCodes.Stloc_S, instruction.Operand);
continue;
}
default:
{
continue;
}
}
}
}
MethodBodyRocks.OptimizeBranches(self);
}