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IR.cs
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IR.cs
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namespace Tests
{
using LLVMSharp.API;
using LLVMSharp.API.Types.Composite;
using LLVMSharp.API.Values.Constants;
using NUnit.Framework;
public class IR
{
[Test]
public void AddsSigned()
{
var op1 = 0;
var op2 = 0;
using (var module = Module.Create("test_add"))
{
var def = module.AddFunction(
Type.Int32, "add", new[] { Type.Int32, Type.Int32 }, (f, b) =>
{
var p1 = f.Parameters[0];
var p2 = f.Parameters[1];
var add = b.CreateAdd(p1, p2);
var ret = b.CreateRet(add);
});
module.Verify();
Initialize.X86.All();
using (var engine = ExecutionEngine.CreateMCJITCompilerForModule(module))
{
var func = engine.GetDelegate<Int32Int32Int32Delegate>(def);
var result = op1 + op2;
Assert.AreEqual(result, func(op1, op2));
}
}
}
[Test]
public void ShiftsRight([Range(0, 256)] int op1, [Range(0, 8)] int op2)
{
using (var module = Module.Create("test_lshift"))
{
var def = module.AddFunction(
Type.Int32, "lshift", new[] { Type.Int32, Type.Int32 }, (f, b) =>
{
var p1 = f.Parameters[0];
var p2 = f.Parameters[1];
var shift = b.CreateLShr(p1, p2);
var ret = b.CreateRet(shift);
});
module.Verify();
Initialize.X86.All();
using (var engine = ExecutionEngine.CreateMCJITCompilerForModule(module))
{
var func = engine.GetDelegate<Int32Int32Int32Delegate>(def);
var result = op1 >> op2;
Assert.AreEqual(result, func(op1, op2));
}
}
}
[Test]
public void ComparesGreaterThan([Range(0, 10)] int op1, [Range(0, 10)] int op2)
{
using (var module = Module.Create("test_greaterthan"))
{
var def = module.AddFunction(
Type.Int1, "greaterthan", new[] { Type.Int32, Type.Int32 }, (f, b) =>
{
var p1 = f.Parameters[0];
var p2 = f.Parameters[1];
var cmp = b.CreateICmp(IntPredicate.SGT, p1, p2);
var r = b.CreateBitCast(cmp, f.FunctionType.ReturnType);
var ret = b.CreateRet(r);
});
module.Verify();
Initialize.X86.All();
using (var engine = ExecutionEngine.CreateMCJITCompilerForModule(module))
{
var func = engine.GetDelegate<Int32Int32Int8Delegate>(def);
var result = op1 > op2 ? 1 : 0;
Assert.AreEqual(result, func(op1, op2));
}
}
}
[Test]
public void CallsFunction([Range(0, 10)] int op1, [Range(0, 10)] int op2)
{
using (var module = Module.Create("test_call"))
{
var defAdd = module.AddFunction(
Type.Int32, "add", new[] { Type.Int32, Type.Int32 }, (f, b) =>
{
var p1 = f.Parameters[0];
var p2 = f.Parameters[1];
var add = b.CreateAdd(p1, p2);
var ret = b.CreateRet(add);
});
var defEntry = module.AddFunction(
Type.Int32, "entry", new[] { Type.Int32, Type.Int32 }, (f, b) =>
{
var p1 = f.Parameters[0];
var p2 = f.Parameters[1];
var call = b.CreateCall(defAdd, p1, p2);
var ret = b.CreateRet(call);
});
module.Verify();
Initialize.X86.All();
using (var engine = ExecutionEngine.CreateMCJITCompilerForModule(module))
{
var func = engine.GetDelegate<Int32Int32Int32Delegate>(defEntry);
var result = op1 + op2;
Assert.AreEqual(result, func(op1, op2));
}
}
}
[Test]
public void ReturnsConstant([Range(0, 10)] int input)
{
var uInput = (uint)input;
using (var module = Module.Create("test_constant"))
{
var def = module.AddFunction(
Type.Int32, "constant", new Type[0], (f, b) =>
{
var value = ConstantInt.Get(Type.Int32, uInput);
var ret = b.CreateRet(value);
});
module.Verify();
Initialize.X86.All();
using (var engine = ExecutionEngine.CreateMCJITCompilerForModule(module))
{
var func = engine.GetDelegate<Int32Delegate>(def);
Assert.AreEqual(input, func());
}
}
}
[Test]
public void ReturnsSizeOf()
{
using(var module = Module.Create("test_sizeof"))
{
var str = StructType.Create(new[] { Type.Int32, Type.Int32 }, true);
var def = module.AddFunction(
Type.Int32, "structure", new Type[0], (f, b) =>
{
var sz = ConstantExpr.GetSizeOf(str);
var sz32 = b.CreateBitCast(sz, Type.Int32);
var ret = b.CreateRet(sz32);
});
module.Verify();
Initialize.X86.All();
using(var engine = ExecutionEngine.CreateMCJITCompilerForModule(module))
{
var func = engine.GetDelegate<Int32Delegate>(def);
Assert.AreEqual(8, func());
}
}
}
}
}