Make target info available to clang code generator.

This is far from complete but this helps clang codegen module
make progress.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43536 91177308-0d34-0410-b5e6-96231b3b80d8

CodeGen/CodeGenModule.cpp

@@ -24,8 +24,10 @@ using namespace clang;
 using namespace CodeGen;
 
 
-CodeGenModule::CodeGenModule(ASTContext &C, llvm::Module &M)
-  : Context(C), TheModule(M), Types(C, M), CFConstantStringClassRef(0) {}
+CodeGenModule::CodeGenModule(ASTContext &C, llvm::Module &M, 
+                             const llvm::TargetData &TD)
+  : Context(C), TheModule(M), TheTargetData(TD), 
+    Types(C, M, TD), CFConstantStringClassRef(0) {}
 
 llvm::Constant *CodeGenModule::GetAddrOfGlobalDecl(const ValueDecl *D) {
   // See if it is already in the map.

CodeGen/CodeGenModule.h

@@ -23,6 +23,7 @@ namespace llvm {
   class Constant;
   class Function;
   class GlobalVariable;
+  class TargetData;
 }
 
 namespace clang {
@@ -39,6 +40,7 @@ namespace CodeGen {
 class CodeGenModule {
   ASTContext &Context;
   llvm::Module &TheModule;
+  const llvm::TargetData &TheTargetData;
   CodeGenTypes Types;
 
   llvm::Function *MemCpyFn;
@@ -49,7 +51,7 @@ class CodeGenModule {
   
   std::vector<llvm::Function *> BuiltinFunctions;
 public:
-  CodeGenModule(ASTContext &C, llvm::Module &M);
+  CodeGenModule(ASTContext &C, llvm::Module &M, const llvm::TargetData &TD);
   
   ASTContext &getContext() const { return Context; }
   llvm::Module &getModule() const { return TheModule; }

CodeGen/CodeGenTypes.cpp

@@ -60,8 +60,9 @@ namespace {
   };
 }
 
-CodeGenTypes::CodeGenTypes(ASTContext &Ctx, llvm::Module& M)
-  : Context(Ctx), Target(Ctx.Target), TheModule(M) {
+CodeGenTypes::CodeGenTypes(ASTContext &Ctx, llvm::Module& M,
+                           const llvm::TargetData &TD)
+  : Context(Ctx), Target(Ctx.Target), TheModule(M), TheTargetData(TD) {
 }
 
 CodeGenTypes::~CodeGenTypes() {

CodeGen/CodeGenTypes.h

@@ -21,6 +21,7 @@ namespace llvm {
   class Module;
   class Type;
   class PATypeHolder;
+  class TargetData;
 }
 
 namespace clang {
@@ -61,6 +62,7 @@ class CodeGenTypes {
   ASTContext &Context;
   TargetInfo &Target;
   llvm::Module& TheModule;
+  const llvm::TargetData& TheTargetData;
   
   llvm::DenseMap<const TagDecl*, llvm::Type*> TagDeclTypes;
 
@@ -91,7 +93,7 @@ class CodeGenTypes {
   /// interface to convert type T into a llvm::Type.
   const llvm::Type *ConvertNewType(QualType T);
 public:
-  CodeGenTypes(ASTContext &Ctx, llvm::Module &M);
+  CodeGenTypes(ASTContext &Ctx, llvm::Module &M, const llvm::TargetData &TD);
   ~CodeGenTypes();
   
   TargetInfo &getTarget() const { return Target; }

CodeGen/ModuleBuilder.cpp

@@ -18,8 +18,9 @@ using namespace clang;
 
 /// Init - Create an ModuleBuilder with the specified ASTContext.
 clang::CodeGen::BuilderTy *
-clang::CodeGen::Init(ASTContext &Context, llvm::Module &M) {
-  return new CodeGenModule(Context, M);
+clang::CodeGen::Init(ASTContext &Context, llvm::Module &M,
+                     const llvm::TargetData &TD) {
+  return new CodeGenModule(Context, M, TD);
 }
 
 void clang::CodeGen::Terminate(BuilderTy *B) {

Driver/ASTConsumers.cpp

@@ -379,14 +379,19 @@ ASTConsumer *clang::CreateUnitValsChecker(Diagnostic &Diags) {
 // LLVM Emitter
 
 #include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/TargetInfo.h"
 #include "clang/CodeGen/ModuleBuilder.h"
 #include "llvm/Module.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetMachineRegistry.h"
 #include <iostream>
 
 namespace {
   class LLVMEmitter : public ASTConsumer {
     Diagnostic &Diags;
     llvm::Module *M;
+    const llvm::TargetData *TD;
     ASTContext *Ctx;
     CodeGen::BuilderTy *Builder;
   public:
@@ -394,7 +399,16 @@ namespace {
     virtual void Initialize(ASTContext &Context, unsigned MainFileID) {
       Ctx = &Context;
       M = new llvm::Module("foo");
-      Builder = CodeGen::Init(Context, *M);
+      M->setTargetTriple(Ctx->Target.getTargetTriple());
+      std::string Err;
+      const llvm::TargetMachineRegistry::entry *TME = 
+        llvm::TargetMachineRegistry::getClosestStaticTargetForModule(*M, Err);
+      assert(TME && "Unable to determine target machine");
+      // FIXME : Set appropriate subtarget features.
+      std::string FeatureStr;
+      llvm::TargetMachine *TheMachine =  TME->CtorFn(*M, FeatureStr);
+      TD = TheMachine->getTargetData();
+      Builder = CodeGen::Init(Context, *M, *TD);
     }
     
     virtual void HandleTopLevelDecl(Decl *D) {

Driver/Makefile

@@ -4,8 +4,12 @@ CXXFLAGS = -fno-rtti
 
 TOOLNAME = clang
 USEDLIBS = clangCodeGen.a clangAnalysis.a clangRewrite.a clangSEMA.a \
-           clangAST.a clangParse.a clangLex.a clangBasic.a \
+           clangAST.a clangParse.a clangLex.a clangBasic.a LLVMX86 \
            LLVMCore.a LLVMSupport.a LLVMSystem.a \
-           LLVMBitWriter.a LLVMBitReader.a
+           LLVMBitWriter.a LLVMBitReader.a LLVMTarget.a LLVMCodeGen.a \
+           LLVMSelectionDAG.a LLVMScalarOpts.a LLVMTransformUtils.a \
+           LLVMCore.a LLVMAnalysis.a
+	
+	
 
 include $(LEVEL)/Makefile.common

include/clang/Basic/TargetInfo.h

@@ -218,6 +218,11 @@ public:
     getLongLongInfo(Size, Align, Loc);
     return static_cast<unsigned>(Size);
   }
+
+  const char *getTargetTriple() {
+    // FIXME !
+    return "i686-apple-darwin9";
+  }
 private:
   void ComputeWCharInfo(SourceLocation Loc);
 };

include/clang/CodeGen/ModuleBuilder.h

@@ -16,6 +16,7 @@
 
 namespace llvm {
   class Module;
+  class TargetData;
 }
 
 namespace clang {
@@ -29,7 +30,8 @@ namespace CodeGen {
   typedef void BuilderTy;
   
   /// Init - Create an ModuleBuilder with the specified ASTContext.
-  BuilderTy *Init(ASTContext &Context, llvm::Module &M);
+  BuilderTy *Init(ASTContext &Context, llvm::Module &M,
+                  const llvm::TargetData &TD);
   
   /// CodeGenFunction - Convert the AST node for a FunctionDecl into LLVM.
   ///