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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Collections.Generic;
using System.Diagnostics;
using Internal.TypeSystem;
using Internal.TypeSystem.Ecma;
using ILCompiler;
using ILCompiler.CodeGen;
using ILCompiler.DependencyAnalysis;
using LLVMSharp;
namespace Internal.IL
{
internal partial class ILImporter
{
public static void CompileMethod(WebAssemblyCodegenCompilation compilation, WebAssemblyMethodCodeNode methodCodeNodeNeedingCode)
{
MethodDesc method = methodCodeNodeNeedingCode.Method;
if (compilation.Logger.IsVerbose)
{
string methodName = method.ToString();
compilation.Logger.Writer.WriteLine("Compiling " + methodName);
}
if (method.HasCustomAttribute("System.Runtime", "RuntimeImportAttribute"))
{
methodCodeNodeNeedingCode.CompilationCompleted = true;
//throw new NotImplementedException();
//CompileExternMethod(methodCodeNodeNeedingCode, ((EcmaMethod)method).GetRuntimeImportName());
//return;
}
if (method.IsRawPInvoke())
{
//CompileExternMethod(methodCodeNodeNeedingCode, method.GetPInvokeMethodMetadata().Name ?? method.Name);
//return;
}
var methodIL = compilation.GetMethodIL(method);
if (methodIL == null)
return;
ILImporter ilImporter = null;
try
{
string mangledName;
// TODO: Better detection of the StartupCodeMain method
if (methodCodeNodeNeedingCode.Method.Signature.IsStatic && methodCodeNodeNeedingCode.Method.Name == "StartupCodeMain")
{
mangledName = "StartupCodeMain";
}
else
{
mangledName = compilation.NameMangler.GetMangledMethodName(methodCodeNodeNeedingCode.Method).ToString();
}
ilImporter = new ILImporter(compilation, method, methodIL, mangledName);
CompilerTypeSystemContext typeSystemContext = compilation.TypeSystemContext;
//MethodDebugInformation debugInfo = compilation.GetDebugInfo(methodIL);
/* if (!compilation.Options.HasOption(CppCodegenConfigProvider.NoLineNumbersString))*/
{
//IEnumerable<ILSequencePoint> sequencePoints = debugInfo.GetSequencePoints();
/*if (sequencePoints != null)
ilImporter.SetSequencePoints(sequencePoints);*/
}
//IEnumerable<ILLocalVariable> localVariables = debugInfo.GetLocalVariables();
/*if (localVariables != null)
ilImporter.SetLocalVariables(localVariables);*/
IEnumerable<string> parameters = GetParameterNamesForMethod(method);
/*if (parameters != null)
ilImporter.SetParameterNames(parameters);*/
ilImporter.Import();
methodCodeNodeNeedingCode.CompilationCompleted = true;
}
catch (Exception e)
{
compilation.Logger.Writer.WriteLine(e.Message + " (" + method + ")");
methodCodeNodeNeedingCode.CompilationCompleted = true;
// methodCodeNodeNeedingCode.SetDependencies(ilImporter.GetDependencies());
//throw new NotImplementedException();
//methodCodeNodeNeedingCode.SetCode(sb.ToString(), Array.Empty<Object>());
}
// Uncomment the block below to get specific method failures when LLVM fails for cryptic reasons
#if false
LLVMBool result = LLVM.VerifyFunction(ilImporter._llvmFunction, LLVMVerifierFailureAction.LLVMPrintMessageAction);
if (result.Value != 0)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"Error compliling {method.OwningType}.{method}");
Console.ResetColor();
}
#endif // false
// Ensure dependencies show up regardless of exceptions to avoid breaking LLVM
methodCodeNodeNeedingCode.SetDependencies(ilImporter.GetDependencies());
}
static LLVMValueRef DebugtrapFunction = default(LLVMValueRef);
static LLVMValueRef TrapFunction = default(LLVMValueRef);
static LLVMValueRef DoNothingFunction = default(LLVMValueRef);
private static IEnumerable<string> GetParameterNamesForMethod(MethodDesc method)
{
// TODO: The uses of this method need revision. The right way to get to this info is from
// a MethodIL. For declarations, we don't need names.
method = method.GetTypicalMethodDefinition();
var ecmaMethod = method as EcmaMethod;
if (ecmaMethod != null && ecmaMethod.Module.PdbReader != null)
{
return (new EcmaMethodDebugInformation(ecmaMethod)).GetParameterNames();
}
return null;
}
}
}
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