public override void Initialize()
{
_context ??= new Context();
if (_targetTriple.Length == 0)
{
_targetTriple = Target.DefaultTargetTriple;
}
_targetTriple = Target.NormalizeTargetTriple(_targetTriple);
_optBuilder ??= _O0 || _O1 || _O2 || _Os || _Oz || _O3 ? new PassManagerBuilder() : null;
_optLevel = LLVMCodeGenOptLevel.LLVMCodeGenLevelNone;
if (_optBuilder != null)
{
if (_O0)
{
_optBuilder.SetOptLevels(0, 0);
_optLevel = LLVMCodeGenOptLevel.LLVMCodeGenLevelNone;
}
else if (_O1)
{
_optBuilder.SetOptLevels(1, 0);
_optLevel = LLVMCodeGenOptLevel.LLVMCodeGenLevelLess;
}
else if (_O2)
{
_optBuilder.SetOptLevels(2, 0);
_optLevel = LLVMCodeGenOptLevel.LLVMCodeGenLevelDefault;
}
else if (_Os)
{
_optBuilder.SetOptLevels(2, 1);
_optLevel = LLVMCodeGenOptLevel.LLVMCodeGenLevelDefault;
}
else if (_Oz)
{
_optBuilder.SetOptLevels(2, 2);
_optLevel = LLVMCodeGenOptLevel.LLVMCodeGenLevelDefault;
}
else if (_O3)
{
_optBuilder.SetOptLevels(3, 0);
_optLevel = LLVMCodeGenOptLevel.LLVMCodeGenLevelAggressive;
}
}
Target.InitializeAllTargets();
if (_native)
{
_target = Target.FromTriple(_targetTriple);
TargetMachine = _target.CreateTargetMachine(_targetTriple, "", "", _optLevel,
LLVMRelocMode.LLVMRelocDefault, LLVMCodeModel.LLVMCodeModelDefault);
TargetMachine.SetAsmVerbosity(true);
}
}
