public override CompilerResult VisitProgram(DesignScriptParser.ProgramContext context)
{
var success = new LLVMBool(0);
module = LLVM.ModuleCreateWithName("DesignScript");
builder = LLVM.CreateBuilder();
LLVM.LinkInMCJIT();
LLVM.InitializeX86TargetInfo();
LLVM.InitializeX86Target();
LLVM.InitializeX86TargetMC();
LLVM.InitializeX86AsmParser();
LLVM.InitializeX86AsmPrinter();
LLVMMCJITCompilerOptions options = new LLVMMCJITCompilerOptions {
NoFramePointerElim = 1
};
LLVM.InitializeMCJITCompilerOptions(options);
if (LLVM.CreateExecutionEngineForModule(out engine, module, out var errorMessage).Value == 1)
{
Console.WriteLine(errorMessage);
return(new NullCompilerResult());
}
#region Add optimization passes
// Create a function pass manager for this engine
passManager = LLVM.CreateFunctionPassManagerForModule(module);
// Do simple "peephole" optimizations and bit-twiddling optzns.
LLVM.AddInstructionCombiningPass(passManager);
// Reassociate expressions.
LLVM.AddReassociatePass(passManager);
// Eliminate Common SubExpressions.
LLVM.AddGVNPass(passManager);
// Simplify the control flow graph (deleting unreachable blocks, etc).
LLVM.AddCFGSimplificationPass(passManager);
LLVM.InitializeFunctionPassManager(passManager);
#endregion
base.VisitProgram(context);
if (LLVM.VerifyModule(module, LLVMVerifierFailureAction.LLVMPrintMessageAction, out var error) != success)
{
Console.WriteLine($"Error: {error}");
}
LLVM.DumpModule(module);
LLVM.DisposeBuilder(builder);
LLVM.DisposeExecutionEngine(engine);
return(new NullCompilerResult());
}
/// <summary>
/// Visit a parse tree produced by <see cref="DesignScriptParser.program"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitProgram([NotNull] DesignScriptParser.ProgramContext context)
{
return(VisitChildren(context));
}