/// <summary>
/// Emits a compare instruction.
/// </summary>
/// <param name="instruction">The instruction.</param>
/// <param name="context">The context.</param>
/// <param name="builder">The builder.</param>
public void Emit(Instruction instruction, MethodContext context, BuilderRef builder)
{
StackElement value2 = context.CurrentStack.Pop();
StackElement value1 = context.CurrentStack.Pop();
ValueRef ret;
if (TypeHelper.IsFloatingPoint(value2) || TypeHelper.IsFloatingPoint(value1))
{
ret = LLVM.BuildFCmp(builder, PredicateHelper.GetRealPredicateFromCode(instruction.OpCode.Code), value1.Value, value2.Value, "fcmp");
}
else
{
if (value2.Type != value1.Type)
{
ValueRef tmp = LLVM.BuildIntCast(builder, value2.Value, value1.Type, "tmp");
ret = LLVM.BuildICmp(builder, PredicateHelper.GetIntPredicateFromCode(instruction.OpCode.Code), value1.Value, tmp, "icmp");
}
else
{
ret = LLVM.BuildICmp(builder, PredicateHelper.GetIntPredicateFromCode(instruction.OpCode.Code), value1.Value, value2.Value, "icmp");
}
}
context.CurrentStack.Push(new StackElement(ret, typeof(bool).GetTypeReference(), TypeHelper.Boolean));
}
/// <summary>
/// Emits a branch on compare instruction.
/// </summary>
/// <param name="instruction">The instruction.</param>
/// <param name="context">The context.</param>
/// <param name="builder">The builder.</param>
public void Emit(Instruction instruction, MethodContext context, BuilderRef builder)
{
StackElement value2 = context.CurrentStack.Pop();
StackElement value1 = context.CurrentStack.Pop();
ValueRef ret;
if (TypeHelper.IsFloatingPoint(value2) || TypeHelper.IsFloatingPoint(value1))
{
ret = LLVM.BuildFCmp(builder, PredicateHelper.GetRealPredicateFromCode(instruction.OpCode.Code), value1.Value, value2.Value, "fbrcmp");
}
else
{
CastHelper.HelpIntCast(builder, ref value1, ref value2);
ret = LLVM.BuildICmp(builder, PredicateHelper.GetIntPredicateFromCode(instruction.OpCode.Code), value1.Value, value2.Value, "ibrcmp");
}
Instruction onFalse = instruction.Next;
Instruction onTrue = (Instruction)instruction.Operand;
LLVM.BuildCondBr(builder, ret, context.GetBlockOf(onTrue), context.GetBlockOf(onFalse));
}