Check in LLVM r95781.
diff --git a/lib/CodeGen/ModuleBuilder.cpp b/lib/CodeGen/ModuleBuilder.cpp
new file mode 100644
index 0000000..1e1edc1
--- /dev/null
+++ b/lib/CodeGen/ModuleBuilder.cpp
@@ -0,0 +1,100 @@
+//===--- ModuleBuilder.cpp - Emit LLVM Code from ASTs ---------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This builds an AST and converts it to LLVM Code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/CodeGen/ModuleBuilder.h"
+#include "CodeGenModule.h"
+#include "clang/CodeGen/CodeGenOptions.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/DeclObjC.h"
+#include "clang/AST/Expr.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/TargetInfo.h"
+#include "llvm/LLVMContext.h"
+#include "llvm/Module.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/ADT/OwningPtr.h"
+using namespace clang;
+
+namespace {
+ class CodeGeneratorImpl : public CodeGenerator {
+ Diagnostic &Diags;
+ llvm::OwningPtr<const llvm::TargetData> TD;
+ ASTContext *Ctx;
+ const CodeGenOptions CodeGenOpts; // Intentionally copied in.
+ protected:
+ llvm::OwningPtr<llvm::Module> M;
+ llvm::OwningPtr<CodeGen::CodeGenModule> Builder;
+ public:
+ CodeGeneratorImpl(Diagnostic &diags, const std::string& ModuleName,
+ const CodeGenOptions &CGO, llvm::LLVMContext& C)
+ : Diags(diags), CodeGenOpts(CGO), M(new llvm::Module(ModuleName, C)) {}
+
+ virtual ~CodeGeneratorImpl() {}
+
+ virtual llvm::Module* GetModule() {
+ return M.get();
+ }
+
+ virtual llvm::Module* ReleaseModule() {
+ return M.take();
+ }
+
+ virtual void Initialize(ASTContext &Context) {
+ Ctx = &Context;
+
+ M->setTargetTriple(Ctx->Target.getTriple().getTriple());
+ M->setDataLayout(Ctx->Target.getTargetDescription());
+ TD.reset(new llvm::TargetData(Ctx->Target.getTargetDescription()));
+ Builder.reset(new CodeGen::CodeGenModule(Context, CodeGenOpts,
+ *M, *TD, Diags));
+ }
+
+ virtual void HandleTopLevelDecl(DeclGroupRef DG) {
+ // Make sure to emit all elements of a Decl.
+ for (DeclGroupRef::iterator I = DG.begin(), E = DG.end(); I != E; ++I)
+ Builder->EmitTopLevelDecl(*I);
+ }
+
+ /// HandleTagDeclDefinition - This callback is invoked each time a TagDecl
+ /// to (e.g. struct, union, enum, class) is completed. This allows the
+ /// client hack on the type, which can occur at any point in the file
+ /// (because these can be defined in declspecs).
+ virtual void HandleTagDeclDefinition(TagDecl *D) {
+ Builder->UpdateCompletedType(D);
+ }
+
+ virtual void HandleTranslationUnit(ASTContext &Ctx) {
+ if (Diags.hasErrorOccurred()) {
+ M.reset();
+ return;
+ }
+
+ if (Builder)
+ Builder->Release();
+ }
+
+ virtual void CompleteTentativeDefinition(VarDecl *D) {
+ if (Diags.hasErrorOccurred())
+ return;
+
+ Builder->EmitTentativeDefinition(D);
+ }
+ };
+}
+
+CodeGenerator *clang::CreateLLVMCodeGen(Diagnostic &Diags,
+ const std::string& ModuleName,
+ const CodeGenOptions &CGO,
+ llvm::LLVMContext& C) {
+ return new CodeGeneratorImpl(Diags, ModuleName, CGO, C);
+}