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-rw-r--r--Clang/CGObjC.cpp193
-rw-r--r--Clang/CGObjCGNU.cpp869
-rw-r--r--Clang/CGObjCRuntime.h126
3 files changed, 0 insertions, 1188 deletions
diff --git a/Clang/CGObjC.cpp b/Clang/CGObjC.cpp
deleted file mode 100644
index 9bf53d9..0000000
--- a/Clang/CGObjC.cpp
+++ /dev/null
@@ -1,193 +0,0 @@
-//===---- CGBuiltin.cpp - Emit LLVM Code for builtins ---------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This contains code to emit Objective-C code as LLVM code.
-//
-//===----------------------------------------------------------------------===//
-
-#include "CGObjCRuntime.h"
-#include "CodeGenFunction.h"
-#include "CodeGenModule.h"
-#include "clang/AST/ExprObjC.h"
-#include "llvm/Constant.h"
-#include "llvm/Function.h"
-
-using namespace clang;
-using namespace CodeGen;
-
-/// Emits an instance of NSConstantString representing the object.
-llvm::Value *CodeGenFunction::EmitObjCStringLiteral(const ObjCStringLiteral *E){
- return CGM.getObjCRuntime()->GenerateConstantString(
- E->getString()->getStrData(), E->getString()->getByteLength());
-}
-
-/// Emit a selector.
-llvm::Value *CodeGenFunction::EmitObjCSelectorExpr(const ObjCSelectorExpr *E) {
- // Untyped selector.
- // Note that this implementation allows for non-constant strings to be passed
- // as arguments to @selector(). Currently, the only thing preventing this
- // behaviour is the type checking in the front end.
- return CGM.getObjCRuntime()->GetSelector(Builder, E->getSelector());
-}
-
-
-
-llvm::Value *CodeGenFunction::EmitObjCMessageExpr(const ObjCMessageExpr *E) {
- // Only the lookup mechanism and first two arguments of the method
- // implementation vary between runtimes. We can get the receiver and
- // arguments in generic code.
-
- CGObjCRuntime *Runtime = CGM.getObjCRuntime();
- const Expr *ReceiverExpr = E->getReceiver();
- bool isSuperMessage = false;
- // Find the receiver
- llvm::Value *Receiver;
- if (!ReceiverExpr) {
- const char * classname = E->getClassName()->getName();
- if (!strcmp(classname, "super")) {
- classname = E->getMethodDecl()->getClassInterface()->getName();
- }
- llvm::Value *ClassName = CGM.GetAddrOfConstantString(classname);
- ClassName = Builder.CreateStructGEP(ClassName, 0);
- Receiver = Runtime->LookupClass(Builder, ClassName);
- } else if (isa<PreDefinedExpr>(E->getReceiver())) {
- assert(cast<PreDefinedExpr>(E->getReceiver())->getIdentType() ==
- PreDefinedExpr::ObjCSuper);
- isSuperMessage = true;
- Receiver = LoadObjCSelf();
- } else {
- Receiver = EmitScalarExpr(E->getReceiver());
- }
-
- // Process the arguments
- unsigned ArgC = E->getNumArgs();
- llvm::SmallVector<llvm::Value*, 16> Args;
- for (unsigned i = 0; i != ArgC; ++i) {
- const Expr *ArgExpr = E->getArg(i);
- QualType ArgTy = ArgExpr->getType();
- if (!hasAggregateLLVMType(ArgTy)) {
- // Scalar argument is passed by-value.
- Args.push_back(EmitScalarExpr(ArgExpr));
- } else if (ArgTy->isAnyComplexType()) {
- // Make a temporary alloca to pass the argument.
- llvm::Value *DestMem = CreateTempAlloca(ConvertType(ArgTy));
- EmitComplexExprIntoAddr(ArgExpr, DestMem, false);
- Args.push_back(DestMem);
- } else {
- llvm::Value *DestMem = CreateTempAlloca(ConvertType(ArgTy));
- EmitAggExpr(ArgExpr, DestMem, false);
- Args.push_back(DestMem);
- }
- }
-
- if (isSuperMessage) {
- // super is only valid in an Objective-C method
- const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CurFuncDecl);
- const char *SuperClass =
- OMD->getClassInterface()->getSuperClass()->getName();
- return Runtime->GenerateMessageSendSuper(Builder, ConvertType(E->getType()),
- Receiver, SuperClass,
- Receiver, E->getSelector(),
- &Args[0], Args.size());
- }
- return Runtime->GenerateMessageSend(Builder, ConvertType(E->getType()),
- LoadObjCSelf(),
- Receiver, E->getSelector(),
- &Args[0], Args.size());
-}
-
-/// Generate an Objective-C method. An Objective-C method is a C function with
-/// its pointer, name, and types registered in the class struture.
-void CodeGenFunction::GenerateObjCMethod(const ObjCMethodDecl *OMD) {
-
- llvm::SmallVector<const llvm::Type *, 16> ParamTypes;
- for (unsigned i=0 ; i<OMD->param_size() ; i++) {
- const llvm::Type *Ty = ConvertType(OMD->getParamDecl(i)->getType());
- if (Ty->isFirstClassType())
- ParamTypes.push_back(Ty);
- else
- ParamTypes.push_back(llvm::PointerType::getUnqual(Ty));
- }
- std::string CategoryName = "";
- if (ObjCCategoryImplDecl *OCD =
- dyn_cast<ObjCCategoryImplDecl>(OMD->getMethodContext())) {
- CategoryName = OCD->getName();
- }
- const llvm::Type *ReturnTy =
- CGM.getTypes().ConvertReturnType(OMD->getResultType());
- CurFn = CGM.getObjCRuntime()->MethodPreamble(
- OMD->getClassInterface()->getName(),
- CategoryName,
- OMD->getSelector().getName(),
- ReturnTy,
- llvm::PointerType::getUnqual(
- llvm::Type::Int32Ty),
- ParamTypes.begin(),
- OMD->param_size(),
- !OMD->isInstance(),
- OMD->isVariadic());
- llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", CurFn);
-
- // Create a marker to make it easy to insert allocas into the entryblock
- // later. Don't create this with the builder, because we don't want it
- // folded.
- llvm::Value *Undef = llvm::UndefValue::get(llvm::Type::Int32Ty);
- AllocaInsertPt = new llvm::BitCastInst(Undef, llvm::Type::Int32Ty, "allocapt",
- EntryBB);
-
- FnRetTy = OMD->getResultType();
- CurFuncDecl = OMD;
-
- Builder.SetInsertPoint(EntryBB);
-
- // Emit allocs for param decls. Give the LLVM Argument nodes names.
- llvm::Function::arg_iterator AI = CurFn->arg_begin();
-
- if (hasAggregateLLVMType(OMD->getResultType())) {
- ++AI;
- }
- // Add implicit parameters to the decl map.
- // TODO: Add something to AST to let the runtime specify the names and types
- // of these.
-
- llvm::Value *&SelfEntry = LocalDeclMap[OMD->getSelfDecl()];
- const llvm::Type *IPTy = AI->getType();
- llvm::Value *DeclPtr = new llvm::AllocaInst(IPTy, 0, AI->getName() +
- ".addr", AllocaInsertPt);
- // Store the initial value into the alloca.
- Builder.CreateStore(AI, DeclPtr);
- SelfEntry = DeclPtr;
- ++AI;
- llvm::Value *&CmdEntry = LocalDeclMap[OMD->getCmdDecl()];
- IPTy = AI->getType();
- DeclPtr = new llvm::AllocaInst(IPTy, 0, AI->getName() +
- ".addr", AllocaInsertPt);
- // Store the initial value into the alloca.
- Builder.CreateStore(AI, DeclPtr);
- CmdEntry = DeclPtr;
-
- for (unsigned i = 0, e = OMD->getNumParams(); i != e; ++i, ++AI) {
- assert(AI != CurFn->arg_end() && "Argument mismatch!");
- EmitParmDecl(*OMD->getParamDecl(i), AI);
- }
-
- GenerateFunction(OMD->getBody());
-}
-
-llvm::Value *CodeGenFunction::LoadObjCSelf(void)
-{
- if (const ObjCMethodDecl *OMD = dyn_cast<ObjCMethodDecl>(CurFuncDecl)) {
- ValueDecl *Decl = OMD->getSelfDecl();
- llvm::Value *SelfPtr = LocalDeclMap[&(*(Decl))];
- return Builder.CreateLoad(SelfPtr, "self");
- }
- return NULL;
-}
-
-CGObjCRuntime::~CGObjCRuntime() {}
diff --git a/Clang/CGObjCGNU.cpp b/Clang/CGObjCGNU.cpp
deleted file mode 100644
index 57c021f..0000000
--- a/Clang/CGObjCGNU.cpp
+++ /dev/null
@@ -1,869 +0,0 @@
-//===------- CGObjCGNU.cpp - Emit LLVM Code from ASTs for a Module --------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This provides Objective-C code generation targetting the GNU runtime. The
-// class in this file generates structures used by the GNU Objective-C runtime
-// library. These structures are defined in objc/objc.h and objc/objc-api.h in
-// the GNU runtime distribution.
-//
-//===----------------------------------------------------------------------===//
-
-#include "CGObjCRuntime.h"
-#include "CodeGenModule.h"
-#include "clang/AST/ASTContext.h"
-#include "llvm/Module.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Support/IRBuilder.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringMap.h"
-#include <map>
-using namespace clang;
-using llvm::dyn_cast;
-
-// The version of the runtime that this class targets. Must match the version
-// in the runtime.
-static const int RuntimeVersion = 8;
-static const int ProtocolVersion = 2;
-
-namespace {
-class CGObjCGNU : public CodeGen::CGObjCRuntime {
-private:
- CodeGen::CodeGenModule &CGM;
- llvm::Module &TheModule;
- const llvm::StructType *SelStructTy;
- const llvm::Type *SelectorTy;
- const llvm::Type *PtrToInt8Ty;
- const llvm::Type *IMPTy;
- const llvm::Type *IdTy;
- const llvm::Type *IntTy;
- const llvm::Type *PtrTy;
- const llvm::Type *LongTy;
- const llvm::Type *PtrToIntTy;
- std::vector<llvm::Constant*> Classes;
- std::vector<llvm::Constant*> Categories;
- std::vector<llvm::Constant*> ConstantStrings;
- llvm::Function *LoadFunction;
- llvm::StringMap<llvm::Constant*> ExistingProtocols;
- typedef std::pair<std::string, std::string> TypedSelector;
- std::map<TypedSelector, llvm::GlobalAlias*> TypedSelectors;
- llvm::StringMap<llvm::GlobalAlias*> UntypedSelectors;
- // Some zeros used for GEPs in lots of places.
- llvm::Constant *Zeros[2];
- llvm::Constant *NULLPtr;
-private:
- llvm::Constant *GenerateIvarList(
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets);
- llvm::Constant *GenerateMethodList(const std::string &ClassName,
- const std::string &CategoryName,
- const llvm::SmallVectorImpl<Selector> &MethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes,
- bool isClassMethodList);
- llvm::Constant *GenerateProtocolList(
- const llvm::SmallVectorImpl<std::string> &Protocols);
- llvm::Constant *GenerateClassStructure(
- llvm::Constant *MetaClass,
- llvm::Constant *SuperClass,
- unsigned info,
- const char *Name,
- llvm::Constant *Version,
- llvm::Constant *InstanceSize,
- llvm::Constant *IVars,
- llvm::Constant *Methods,
- llvm::Constant *Protocols);
- llvm::Constant *GenerateProtocolMethodList(
- const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes);
- llvm::Constant *MakeConstantString(const std::string &Str, const std::string
- &Name="");
- llvm::Constant *MakeGlobal(const llvm::StructType *Ty,
- std::vector<llvm::Constant*> &V, const std::string &Name="");
- llvm::Constant *MakeGlobal(const llvm::ArrayType *Ty,
- std::vector<llvm::Constant*> &V, const std::string &Name="");
-public:
- CGObjCGNU(CodeGen::CodeGenModule &cgm);
- virtual llvm::Constant *GenerateConstantString(const char *String,
- const size_t length);
- virtual llvm::Value *GenerateMessageSend(llvm::IRBuilder &Builder,
- const llvm::Type *ReturnTy,
- llvm::Value *Sender,
- llvm::Value *Receiver,
- Selector Sel,
- llvm::Value** ArgV,
- unsigned ArgC);
- virtual llvm::Value *GenerateMessageSendSuper(llvm::IRBuilder &Builder,
- const llvm::Type *ReturnTy,
- llvm::Value *Sender,
- const char *SuperClassName,
- llvm::Value *Receiver,
- Selector Sel,
- llvm::Value** ArgV,
- unsigned ArgC);
- virtual llvm::Value *LookupClass(llvm::IRBuilder &Builder,
- llvm::Value *ClassName);
- virtual llvm::Value *GetSelector(llvm::IRBuilder &Builder, Selector Sel);
-
- virtual llvm::Function *MethodPreamble(
- const std::string &ClassName,
- const std::string &CategoryName,
- const std::string &MethodName,
- const llvm::Type *ReturnTy,
- const llvm::Type *SelfTy,
- const llvm::Type **ArgTy,
- unsigned ArgC,
- bool isClassMethod,
- bool isVarArg);
- virtual void GenerateCategory(const char *ClassName, const char *CategoryName,
- const llvm::SmallVectorImpl<Selector> &InstanceMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<Selector> &ClassMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes,
- const llvm::SmallVectorImpl<std::string> &Protocols);
- virtual void GenerateClass(
- const char *ClassName,
- const char *SuperClassName,
- const int instanceSize,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets,
- const llvm::SmallVectorImpl<Selector> &InstanceMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<Selector> &ClassMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes,
- const llvm::SmallVectorImpl<std::string> &Protocols);
- virtual llvm::Value *GenerateProtocolRef(llvm::IRBuilder &Builder, const char
- *ProtocolName);
- virtual void GenerateProtocol(const char *ProtocolName,
- const llvm::SmallVectorImpl<std::string> &Protocols,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes);
- virtual llvm::Function *ModuleInitFunction();
-};
-} // end anonymous namespace
-
-
-
-static std::string SymbolNameForClass(const std::string &ClassName) {
- return ".objc_class_" + ClassName;
-}
-
-static std::string SymbolNameForMethod(const std::string &ClassName, const
- std::string &CategoryName, const std::string &MethodName, bool isClassMethod)
-{
- return "._objc_method_" + ClassName +"("+CategoryName+")"+
- (isClassMethod ? "+" : "-") + MethodName;
-}
-
-CGObjCGNU::CGObjCGNU(CodeGen::CodeGenModule &cgm)
- : CGM(cgm), TheModule(CGM.getModule()) {
- IntTy = CGM.getTypes().ConvertType(CGM.getContext().IntTy);
- LongTy = CGM.getTypes().ConvertType(CGM.getContext().LongTy);
-
- Zeros[0] = llvm::ConstantInt::get(llvm::Type::Int32Ty, 0);
- Zeros[1] = Zeros[0];
- NULLPtr = llvm::ConstantPointerNull::get(
- llvm::PointerType::getUnqual(llvm::Type::Int8Ty));
- // C string type. Used in lots of places.
- PtrToInt8Ty =
- llvm::PointerType::getUnqual(llvm::Type::Int8Ty);
- // Get the selector Type.
- SelStructTy = llvm::StructType::get(
- PtrToInt8Ty,
- PtrToInt8Ty,
- NULL);
- SelectorTy = llvm::PointerType::getUnqual(SelStructTy);
- PtrToIntTy = llvm::PointerType::getUnqual(IntTy);
- PtrTy = PtrToInt8Ty;
-
- // Object type
- llvm::PATypeHolder OpaqueObjTy = llvm::OpaqueType::get();
- llvm::Type *OpaqueIdTy = llvm::PointerType::getUnqual(OpaqueObjTy);
- IdTy = llvm::StructType::get(OpaqueIdTy, NULL);
- llvm::cast<llvm::OpaqueType>(OpaqueObjTy.get())->refineAbstractTypeTo(IdTy);
- IdTy = llvm::cast<llvm::StructType>(OpaqueObjTy.get());
- IdTy = llvm::PointerType::getUnqual(IdTy);
-
- // IMP type
- std::vector<const llvm::Type*> IMPArgs;
- IMPArgs.push_back(IdTy);
- IMPArgs.push_back(SelectorTy);
- IMPTy = llvm::FunctionType::get(IdTy, IMPArgs, true);
-}
-// This has to perform the lookup every time, since posing and related
-// techniques can modify the name -> class mapping.
-llvm::Value *CGObjCGNU::LookupClass(llvm::IRBuilder &Builder,
- llvm::Value *ClassName) {
- llvm::Constant *ClassLookupFn =
- TheModule.getOrInsertFunction("objc_lookup_class", IdTy, PtrToInt8Ty,
- NULL);
- return Builder.CreateCall(ClassLookupFn, ClassName);
-}
-
-/// GetSelector - Return the pointer to the unique'd string for this selector.
-llvm::Value *CGObjCGNU::GetSelector(llvm::IRBuilder &Builder, Selector Sel) {
- // FIXME: uniquing on the string is wasteful, unique on Sel instead!
- llvm::GlobalAlias *&US = UntypedSelectors[Sel.getName()];
- if (US == 0)
- US = new llvm::GlobalAlias(llvm::PointerType::getUnqual(SelectorTy),
- llvm::GlobalValue::InternalLinkage,
- ".objc_untyped_selector_alias",
- NULL, &TheModule);
-
- return Builder.CreateLoad(US);
-
-}
-
-llvm::Constant *CGObjCGNU::MakeConstantString(const std::string &Str,
- const std::string &Name) {
- llvm::Constant * ConstStr = llvm::ConstantArray::get(Str);
- ConstStr = new llvm::GlobalVariable(ConstStr->getType(), true,
- llvm::GlobalValue::InternalLinkage,
- ConstStr, Name, &TheModule);
- return llvm::ConstantExpr::getGetElementPtr(ConstStr, Zeros, 2);
-}
-llvm::Constant *CGObjCGNU::MakeGlobal(const llvm::StructType *Ty,
- std::vector<llvm::Constant*> &V, const std::string &Name) {
- llvm::Constant *C = llvm::ConstantStruct::get(Ty, V);
- return new llvm::GlobalVariable(Ty, false,
- llvm::GlobalValue::InternalLinkage, C, Name, &TheModule);
-}
-llvm::Constant *CGObjCGNU::MakeGlobal(const llvm::ArrayType *Ty,
- std::vector<llvm::Constant*> &V, const std::string &Name) {
- llvm::Constant *C = llvm::ConstantArray::get(Ty, V);
- return new llvm::GlobalVariable(Ty, false,
- llvm::GlobalValue::InternalLinkage, C, Name, &TheModule);
-}
-
-/// Generate an NSConstantString object.
-//TODO: In case there are any crazy people still using the GNU runtime without
-//an OpenStep implementation, this should let them select their own class for
-//constant strings.
-llvm::Constant *CGObjCGNU::GenerateConstantString(const char *String, const
- size_t length) {
- std::string Str(String, String +length);
- std::vector<llvm::Constant*> Ivars;
- Ivars.push_back(NULLPtr);
- Ivars.push_back(MakeConstantString(Str));
- Ivars.push_back(llvm::ConstantInt::get(IntTy, length));
- llvm::Constant *ObjCStr = MakeGlobal(
- llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, IntTy, NULL),
- Ivars, ".objc_str");
- ConstantStrings.push_back(
- llvm::ConstantExpr::getBitCast(ObjCStr, PtrToInt8Ty));
- return ObjCStr;
-}
-
-///Generates a message send where the super is the receiver. This is a message
-///send to self with special delivery semantics indicating which class's method
-///should be called.
-llvm::Value *CGObjCGNU::GenerateMessageSendSuper(llvm::IRBuilder &Builder,
- const llvm::Type *ReturnTy,
- llvm::Value *Sender,
- const char *SuperClassName,
- llvm::Value *Receiver,
- Selector Sel,
- llvm::Value** ArgV,
- unsigned ArgC) {
- // TODO: This should be cached, not looked up every time.
- llvm::Value *ReceiverClass = LookupClass(Builder,
- MakeConstantString(SuperClassName));
- llvm::Value *cmd = GetSelector(Builder, Sel);
- std::vector<const llvm::Type*> impArgTypes;
- impArgTypes.push_back(Receiver->getType());
- impArgTypes.push_back(SelectorTy);
-
- // Avoid an explicit cast on the IMP by getting a version that has the right
- // return type.
- llvm::FunctionType *impType = llvm::FunctionType::get(ReturnTy, impArgTypes,
- true);
- // Construct the structure used to look up the IMP
- llvm::StructType *ObjCSuperTy = llvm::StructType::get(Receiver->getType(),
- IdTy, NULL);
- llvm::Value *ObjCSuper = Builder.CreateAlloca(ObjCSuperTy);
- // FIXME: volatility
- Builder.CreateStore(Receiver, Builder.CreateStructGEP(ObjCSuper, 0));
- Builder.CreateStore(ReceiverClass, Builder.CreateStructGEP(ObjCSuper, 1));
-
- // Get the IMP
- llvm::Constant *lookupFunction =
- TheModule.getOrInsertFunction("objc_msg_lookup_super",
- llvm::PointerType::getUnqual(impType),
- llvm::PointerType::getUnqual(ObjCSuperTy),
- SelectorTy, NULL);
- llvm::Value *lookupArgs[] = {ObjCSuper, cmd};
- llvm::Value *imp = Builder.CreateCall(lookupFunction, lookupArgs,
- lookupArgs+2);
-
- // Call the method
- llvm::SmallVector<llvm::Value*, 8> callArgs;
- callArgs.push_back(Receiver);
- callArgs.push_back(cmd);
- callArgs.insert(callArgs.end(), ArgV, ArgV+ArgC);
- return Builder.CreateCall(imp, callArgs.begin(), callArgs.end());
-}
-
-/// Generate code for a message send expression.
-llvm::Value *CGObjCGNU::GenerateMessageSend(llvm::IRBuilder &Builder,
- const llvm::Type *ReturnTy,
- llvm::Value *Sender,
- llvm::Value *Receiver,
- Selector Sel,
- llvm::Value** ArgV,
- unsigned ArgC) {
- llvm::Value *cmd = GetSelector(Builder, Sel);
-
- // Look up the method implementation.
- std::vector<const llvm::Type*> impArgTypes;
- const llvm::Type *RetTy;
- //TODO: Revisit this when LLVM supports aggregate return types.
- if (ReturnTy->isSingleValueType() && ReturnTy != llvm::Type::VoidTy) {
- RetTy = ReturnTy;
- } else {
- // For struct returns allocate the space in the caller and pass it up to
- // the sender.
- RetTy = llvm::Type::VoidTy;
- impArgTypes.push_back(llvm::PointerType::getUnqual(ReturnTy));
- }
- impArgTypes.push_back(Receiver->getType());
- impArgTypes.push_back(SelectorTy);
-
- // Avoid an explicit cast on the IMP by getting a version that has the right
- // return type.
- llvm::FunctionType *impType = llvm::FunctionType::get(RetTy, impArgTypes,
- true);
-
- llvm::Constant *lookupFunction =
- TheModule.getOrInsertFunction("objc_msg_lookup",
- llvm::PointerType::getUnqual(impType),
- Receiver->getType(), SelectorTy, NULL);
- llvm::Value *imp = Builder.CreateCall2(lookupFunction, Receiver, cmd);
-
- // Call the method.
- llvm::SmallVector<llvm::Value*, 16> Args;
- if (!ReturnTy->isSingleValueType()) {
- llvm::Value *Return = Builder.CreateAlloca(ReturnTy);
- Args.push_back(Return);
- }
- Args.push_back(Receiver);
- Args.push_back(cmd);
- Args.insert(Args.end(), ArgV, ArgV+ArgC);
- if (!ReturnTy->isSingleValueType()) {
- Builder.CreateCall(imp, Args.begin(), Args.end());
- return Args[0];
- }
- return Builder.CreateCall(imp, Args.begin(), Args.end());
-}
-
-/// Generates a MethodList. Used in construction of a objc_class and
-/// objc_category structures.
-llvm::Constant *CGObjCGNU::GenerateMethodList(const std::string &ClassName,
- const std::string &CategoryName,
- const llvm::SmallVectorImpl<Selector> &MethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes,
- bool isClassMethodList) {
- // Get the method structure type.
- llvm::StructType *ObjCMethodTy = llvm::StructType::get(
- PtrToInt8Ty, // Really a selector, but the runtime creates it us.
- PtrToInt8Ty, // Method types
- llvm::PointerType::getUnqual(IMPTy), //Method pointer
- NULL);
- std::vector<llvm::Constant*> Methods;
- std::vector<llvm::Constant*> Elements;
- for (unsigned int i = 0, e = MethodTypes.size(); i < e; ++i) {
- Elements.clear();
- llvm::Constant *C = CGM.GetAddrOfConstantString(MethodSels[i].getName());
- Elements.push_back(llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2));
- Elements.push_back(
- llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2));
- llvm::Constant *Method =
- TheModule.getFunction(SymbolNameForMethod(ClassName, CategoryName,
- MethodSels[i].getName(),
- isClassMethodList));
- Method = llvm::ConstantExpr::getBitCast(Method,
- llvm::PointerType::getUnqual(IMPTy));
- Elements.push_back(Method);
- Methods.push_back(llvm::ConstantStruct::get(ObjCMethodTy, Elements));
- }
-
- // Array of method structures
- llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodTy,
- MethodSels.size());
- llvm::Constant *MethodArray = llvm::ConstantArray::get(ObjCMethodArrayTy,
- Methods);
-
- // Structure containing list pointer, array and array count
- llvm::SmallVector<const llvm::Type*, 16> ObjCMethodListFields;
- llvm::PATypeHolder OpaqueNextTy = llvm::OpaqueType::get();
- llvm::Type *NextPtrTy = llvm::PointerType::getUnqual(OpaqueNextTy);
- llvm::StructType *ObjCMethodListTy = llvm::StructType::get(NextPtrTy,
- IntTy,
- ObjCMethodArrayTy,
- NULL);
- // Refine next pointer type to concrete type
- llvm::cast<llvm::OpaqueType>(
- OpaqueNextTy.get())->refineAbstractTypeTo(ObjCMethodListTy);
- ObjCMethodListTy = llvm::cast<llvm::StructType>(OpaqueNextTy.get());
-
- Methods.clear();
- Methods.push_back(llvm::ConstantPointerNull::get(
- llvm::PointerType::getUnqual(ObjCMethodListTy)));
- Methods.push_back(llvm::ConstantInt::get(llvm::Type::Int32Ty,
- MethodTypes.size()));
- Methods.push_back(MethodArray);
-
- // Create an instance of the structure
- return MakeGlobal(ObjCMethodListTy, Methods, ".objc_method_list");
-}
-
-/// Generates an IvarList. Used in construction of a objc_class.
-llvm::Constant *CGObjCGNU::GenerateIvarList(
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets) {
- // Get the method structure type.
- llvm::StructType *ObjCIvarTy = llvm::StructType::get(
- PtrToInt8Ty,
- PtrToInt8Ty,
- IntTy,
- NULL);
- std::vector<llvm::Constant*> Ivars;
- std::vector<llvm::Constant*> Elements;
- for (unsigned int i = 0, e = IvarNames.size() ; i < e ; i++) {
- Elements.clear();
- Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarNames[i],
- Zeros, 2));
- Elements.push_back( llvm::ConstantExpr::getGetElementPtr(IvarTypes[i],
- Zeros, 2));
- Elements.push_back(IvarOffsets[i]);
- Ivars.push_back(llvm::ConstantStruct::get(ObjCIvarTy, Elements));
- }
-
- // Array of method structures
- llvm::ArrayType *ObjCIvarArrayTy = llvm::ArrayType::get(ObjCIvarTy,
- IvarNames.size());
-
-
- Elements.clear();
- Elements.push_back(llvm::ConstantInt::get(
- llvm::cast<llvm::IntegerType>(IntTy), (int)IvarNames.size()));
- Elements.push_back(llvm::ConstantArray::get(ObjCIvarArrayTy, Ivars));
- // Structure containing array and array count
- llvm::StructType *ObjCIvarListTy = llvm::StructType::get(IntTy,
- ObjCIvarArrayTy,
- NULL);
-
- // Create an instance of the structure
- return MakeGlobal(ObjCIvarListTy, Elements, ".objc_ivar_list");
-}
-
-/// Generate a class structure
-llvm::Constant *CGObjCGNU::GenerateClassStructure(
- llvm::Constant *MetaClass,
- llvm::Constant *SuperClass,
- unsigned info,
- const char *Name,
- llvm::Constant *Version,
- llvm::Constant *InstanceSize,
- llvm::Constant *IVars,
- llvm::Constant *Methods,
- llvm::Constant *Protocols) {
- // Set up the class structure
- // Note: Several of these are char*s when they should be ids. This is
- // because the runtime performs this translation on load.
- llvm::StructType *ClassTy = llvm::StructType::get(
- PtrToInt8Ty, // class_pointer
- PtrToInt8Ty, // super_class
- PtrToInt8Ty, // name
- LongTy, // version
- LongTy, // info
- LongTy, // instance_size
- IVars->getType(), // ivars
- Methods->getType(), // methods
- // These are all filled in by the runtime, so we pretend
- PtrTy, // dtable
- PtrTy, // subclass_list
- PtrTy, // sibling_class
- PtrTy, // protocols
- PtrTy, // gc_object_type
- NULL);
- llvm::Constant *Zero = llvm::ConstantInt::get(LongTy, 0);
- llvm::Constant *NullP =
- llvm::ConstantPointerNull::get(llvm::cast<llvm::PointerType>(PtrTy));
- // Fill in the structure
- std::vector<llvm::Constant*> Elements;
- Elements.push_back(llvm::ConstantExpr::getBitCast(MetaClass, PtrToInt8Ty));
- Elements.push_back(SuperClass);
- Elements.push_back(MakeConstantString(Name, ".class_name"));
- Elements.push_back(Zero);
- Elements.push_back(llvm::ConstantInt::get(LongTy, info));
- Elements.push_back(InstanceSize);
- Elements.push_back(IVars);
- Elements.push_back(Methods);
- Elements.push_back(NullP);
- Elements.push_back(NullP);
- Elements.push_back(NullP);
- Elements.push_back(llvm::ConstantExpr::getBitCast(Protocols, PtrTy));
- Elements.push_back(NullP);
- // Create an instance of the structure
- return MakeGlobal(ClassTy, Elements, SymbolNameForClass(Name));
-}
-
-llvm::Constant *CGObjCGNU::GenerateProtocolMethodList(
- const llvm::SmallVectorImpl<llvm::Constant *> &MethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &MethodTypes) {
- // Get the method structure type.
- llvm::StructType *ObjCMethodDescTy = llvm::StructType::get(
- PtrToInt8Ty, // Really a selector, but the runtime does the casting for us.
- PtrToInt8Ty,
- NULL);
- std::vector<llvm::Constant*> Methods;
- std::vector<llvm::Constant*> Elements;
- for (unsigned int i = 0, e = MethodTypes.size() ; i < e ; i++) {
- Elements.clear();
- Elements.push_back( llvm::ConstantExpr::getGetElementPtr(MethodNames[i],
- Zeros, 2));
- Elements.push_back(
- llvm::ConstantExpr::getGetElementPtr(MethodTypes[i], Zeros, 2));
- Methods.push_back(llvm::ConstantStruct::get(ObjCMethodDescTy, Elements));
- }
- llvm::ArrayType *ObjCMethodArrayTy = llvm::ArrayType::get(ObjCMethodDescTy,
- MethodNames.size());
- llvm::Constant *Array = llvm::ConstantArray::get(ObjCMethodArrayTy, Methods);
- llvm::StructType *ObjCMethodDescListTy = llvm::StructType::get(
- IntTy, ObjCMethodArrayTy, NULL);
- Methods.clear();
- Methods.push_back(llvm::ConstantInt::get(IntTy, MethodNames.size()));
- Methods.push_back(Array);
- return MakeGlobal(ObjCMethodDescListTy, Methods, ".objc_method_list");
-}
-// Create the protocol list structure used in classes, categories and so on
-llvm::Constant *CGObjCGNU::GenerateProtocolList(
- const llvm::SmallVectorImpl<std::string> &Protocols) {
- llvm::ArrayType *ProtocolArrayTy = llvm::ArrayType::get(PtrToInt8Ty,
- Protocols.size());
- llvm::StructType *ProtocolListTy = llvm::StructType::get(
- PtrTy, //Should be a recurisve pointer, but it's always NULL here.
- LongTy,//FIXME: Should be size_t
- ProtocolArrayTy,
- NULL);
- std::vector<llvm::Constant*> Elements;
- for (const std::string *iter = Protocols.begin(), *endIter = Protocols.end();
- iter != endIter ; iter++) {
- llvm::Constant *Ptr =
- llvm::ConstantExpr::getBitCast(ExistingProtocols[*iter], PtrToInt8Ty);
- Elements.push_back(Ptr);
- }
- llvm::Constant * ProtocolArray = llvm::ConstantArray::get(ProtocolArrayTy,
- Elements);
- Elements.clear();
- Elements.push_back(NULLPtr);
- Elements.push_back(llvm::ConstantInt::get(
- llvm::cast<llvm::IntegerType>(LongTy), Protocols.size()));
- Elements.push_back(ProtocolArray);
- return MakeGlobal(ProtocolListTy, Elements, ".objc_protocol_list");
-}
-
-llvm::Value *CGObjCGNU::GenerateProtocolRef(llvm::IRBuilder &Builder, const
- char *ProtocolName) {
- return ExistingProtocols[ProtocolName];
-}
-
-void CGObjCGNU::GenerateProtocol(const char *ProtocolName,
- const llvm::SmallVectorImpl<std::string> &Protocols,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes) {
-
- llvm::Constant *ProtocolList = GenerateProtocolList(Protocols);
- llvm::Constant *InstanceMethodList =
- GenerateProtocolMethodList(InstanceMethodNames, InstanceMethodTypes);
- llvm::Constant *ClassMethodList =
- GenerateProtocolMethodList(ClassMethodNames, ClassMethodTypes);
- // Protocols are objects containing lists of the methods implemented and
- // protocols adopted.
- llvm::StructType *ProtocolTy = llvm::StructType::get(IdTy,
- PtrToInt8Ty,
- ProtocolList->getType(),
- InstanceMethodList->getType(),
- ClassMethodList->getType(),
- NULL);
- std::vector<llvm::Constant*> Elements;
- // The isa pointer must be set to a magic number so the runtime knows it's
- // the correct layout.
- Elements.push_back(llvm::ConstantExpr::getIntToPtr(
- llvm::ConstantInt::get(llvm::Type::Int32Ty, ProtocolVersion), IdTy));
- Elements.push_back(MakeConstantString(ProtocolName, ".objc_protocol_name"));
- Elements.push_back(ProtocolList);
- Elements.push_back(InstanceMethodList);
- Elements.push_back(ClassMethodList);
- ExistingProtocols[ProtocolName] =
- llvm::ConstantExpr::getBitCast(MakeGlobal(ProtocolTy, Elements,
- ".objc_protocol"), IdTy);
-}
-
-void CGObjCGNU::GenerateCategory(
- const char *ClassName,
- const char *CategoryName,
- const llvm::SmallVectorImpl<Selector> &InstanceMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<Selector> &ClassMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes,
- const llvm::SmallVectorImpl<std::string> &Protocols) {
- std::vector<llvm::Constant*> Elements;
- Elements.push_back(MakeConstantString(CategoryName));
- Elements.push_back(MakeConstantString(ClassName));
- // Instance method list
- Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList(
- ClassName, CategoryName, InstanceMethodSels, InstanceMethodTypes,
- false), PtrTy));
- // Class method list
- Elements.push_back(llvm::ConstantExpr::getBitCast(GenerateMethodList(
- ClassName, CategoryName, ClassMethodSels, ClassMethodTypes, true),
- PtrTy));
- // Protocol list
- Elements.push_back(llvm::ConstantExpr::getBitCast(
- GenerateProtocolList(Protocols), PtrTy));
- Categories.push_back(llvm::ConstantExpr::getBitCast(
- MakeGlobal(llvm::StructType::get(PtrToInt8Ty, PtrToInt8Ty, PtrTy,
- PtrTy, PtrTy, NULL), Elements), PtrTy));
-}
-void CGObjCGNU::GenerateClass(
- const char *ClassName,
- const char *SuperClassName,
- const int instanceSize,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets,
- const llvm::SmallVectorImpl<Selector> &InstanceMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<Selector> &ClassMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes,
- const llvm::SmallVectorImpl<std::string> &Protocols) {
- // Get the superclass pointer.
- llvm::Constant *SuperClass;
- if (SuperClassName) {
- SuperClass = MakeConstantString(SuperClassName, ".super_class_name");
- } else {
- SuperClass = llvm::ConstantPointerNull::get(
- llvm::cast<llvm::PointerType>(PtrToInt8Ty));
- }
- // Empty vector used to construct empty method lists
- llvm::SmallVector<llvm::Constant*, 1> empty;
- // Generate the method and instance variable lists
- llvm::Constant *MethodList = GenerateMethodList(ClassName, "",
- InstanceMethodSels, InstanceMethodTypes, false);
- llvm::Constant *ClassMethodList = GenerateMethodList(ClassName, "",
- ClassMethodSels, ClassMethodTypes, true);
- llvm::Constant *IvarList = GenerateIvarList(IvarNames, IvarTypes,
- IvarOffsets);
- //Generate metaclass for class methods
- llvm::Constant *MetaClassStruct = GenerateClassStructure(NULLPtr,
- NULLPtr, 0x2L, /*name*/"", 0, Zeros[0], GenerateIvarList(
- empty, empty, empty), ClassMethodList, NULLPtr);
- // Generate the class structure
- llvm::Constant *ClassStruct = GenerateClassStructure(MetaClassStruct,
- SuperClass, 0x1L, ClassName, 0,
- llvm::ConstantInt::get(llvm::Type::Int32Ty, instanceSize), IvarList,
- MethodList, GenerateProtocolList(Protocols));
- // Add class structure to list to be added to the symtab later
- ClassStruct = llvm::ConstantExpr::getBitCast(ClassStruct, PtrToInt8Ty);
- Classes.push_back(ClassStruct);
-}
-
-llvm::Function *CGObjCGNU::ModuleInitFunction() {
- // Only emit an ObjC load function if no Objective-C stuff has been called
- if (Classes.empty() && Categories.empty() && ConstantStrings.empty() &&
- ExistingProtocols.empty() && TypedSelectors.empty() &&
- UntypedSelectors.empty())
- return NULL;
-
- // Name the ObjC types to make the IR a bit easier to read
- TheModule.addTypeName(".objc_selector", SelectorTy);
- TheModule.addTypeName(".objc_id", IdTy);
- TheModule.addTypeName(".objc_imp", IMPTy);
-
- std::vector<llvm::Constant*> Elements;
- // Generate statics list:
- llvm::ArrayType *StaticsArrayTy = llvm::ArrayType::get(PtrToInt8Ty,
- ConstantStrings.size() + 1);
- ConstantStrings.push_back(NULLPtr);
- Elements.push_back(MakeConstantString("NSConstantString",
- ".objc_static_class_name"));
- Elements.push_back(llvm::ConstantArray::get(StaticsArrayTy, ConstantStrings));
- llvm::StructType *StaticsListTy =
- llvm::StructType::get(PtrToInt8Ty, StaticsArrayTy, NULL);
- llvm::Type *StaticsListPtrTy = llvm::PointerType::getUnqual(StaticsListTy);
- llvm::Constant *Statics =
- MakeGlobal(StaticsListTy, Elements, ".objc_statics");
- llvm::ArrayType *StaticsListArrayTy =
- llvm::ArrayType::get(StaticsListPtrTy, 2);
- Elements.clear();
- Elements.push_back(Statics);
- Elements.push_back(llvm::Constant::getNullValue(StaticsListPtrTy));
- Statics = MakeGlobal(StaticsListArrayTy, Elements, ".objc_statics_ptr");
- Statics = llvm::ConstantExpr::getBitCast(Statics, PtrTy);
- // Array of classes, categories, and constant objects
- llvm::ArrayType *ClassListTy = llvm::ArrayType::get(PtrToInt8Ty,
- Classes.size() + Categories.size() + 2);
- llvm::StructType *SymTabTy = llvm::StructType::get(LongTy, SelectorTy,
- llvm::Type::Int16Ty,
- llvm::Type::Int16Ty,
- ClassListTy, NULL);
-
- Elements.clear();
- // Pointer to an array of selectors used in this module.
- std::vector<llvm::Constant*> Selectors;
- for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator
- iter = TypedSelectors.begin(), iterEnd = TypedSelectors.end();
- iter != iterEnd ; ++iter) {
- Elements.push_back(MakeConstantString(iter->first.first, ".objc_sel_name"));
- Elements.push_back(MakeConstantString(iter->first.second,
- ".objc_sel_types"));
- Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements));
- Elements.clear();
- }
- for (llvm::StringMap<llvm::GlobalAlias*>::iterator
- iter = UntypedSelectors.begin(), iterEnd = UntypedSelectors.end();
- iter != iterEnd; ++iter) {
- Elements.push_back(
- MakeConstantString(iter->getKeyData(), ".objc_sel_name"));
- Elements.push_back(NULLPtr);
- Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements));
- Elements.clear();
- }
- Elements.push_back(NULLPtr);
- Elements.push_back(NULLPtr);
- Selectors.push_back(llvm::ConstantStruct::get(SelStructTy, Elements));
- Elements.clear();
- // Number of static selectors
- Elements.push_back(llvm::ConstantInt::get(LongTy, Selectors.size() ));
- llvm::Constant *SelectorList = MakeGlobal(
- llvm::ArrayType::get(SelStructTy, Selectors.size()), Selectors,
- ".objc_selector_list");
- Elements.push_back(llvm::ConstantExpr::getBitCast(SelectorList, SelectorTy));
-
- // Now that all of the static selectors exist, create pointers to them.
- int index = 0;
- for (std::map<TypedSelector, llvm::GlobalAlias*>::iterator
- iter=TypedSelectors.begin(), iterEnd =TypedSelectors.end();
- iter != iterEnd; ++iter) {
- llvm::Constant *Idxs[] = {Zeros[0],
- llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]};
- llvm::GlobalVariable *SelPtr = new llvm::GlobalVariable(SelectorTy, true,
- llvm::GlobalValue::InternalLinkage,
- llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2),
- ".objc_sel_ptr", &TheModule);
- (*iter).second->setAliasee(SelPtr);
- }
- for (llvm::StringMap<llvm::GlobalAlias*>::iterator
- iter=UntypedSelectors.begin(), iterEnd = UntypedSelectors.end();
- iter != iterEnd; iter++) {
- llvm::Constant *Idxs[] = {Zeros[0],
- llvm::ConstantInt::get(llvm::Type::Int32Ty, index++), Zeros[0]};
- llvm::GlobalVariable *SelPtr = new llvm::GlobalVariable(SelectorTy, true,
- llvm::GlobalValue::InternalLinkage,
- llvm::ConstantExpr::getGetElementPtr(SelectorList, Idxs, 2),
- ".objc_sel_ptr", &TheModule);
- (*iter).second->setAliasee(SelPtr);
- }
- // Number of classes defined.
- Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty,
- Classes.size()));
- // Number of categories defined
- Elements.push_back(llvm::ConstantInt::get(llvm::Type::Int16Ty,
- Categories.size()));
- // Create an array of classes, then categories, then static object instances
- Classes.insert(Classes.end(), Categories.begin(), Categories.end());
- // NULL-terminated list of static object instances (mainly constant strings)
- Classes.push_back(Statics);
- Classes.push_back(NULLPtr);
- llvm::Constant *ClassList = llvm::ConstantArray::get(ClassListTy, Classes);
- Elements.push_back(ClassList);
- // Construct the symbol table
- llvm::Constant *SymTab= MakeGlobal(SymTabTy, Elements);
-
- // The symbol table is contained in a module which has some version-checking
- // constants
- llvm::StructType * ModuleTy = llvm::StructType::get(LongTy, LongTy,
- PtrToInt8Ty, llvm::PointerType::getUnqual(SymTabTy), NULL);
- Elements.clear();
- // Runtime version used for compatibility checking.
- Elements.push_back(llvm::ConstantInt::get(LongTy, RuntimeVersion));
- //FIXME: Should be sizeof(ModuleTy)
- Elements.push_back(llvm::ConstantInt::get(LongTy, 16));
- //FIXME: Should be the path to the file where this module was declared
- Elements.push_back(NULLPtr);
- Elements.push_back(SymTab);
- llvm::Value *Module = MakeGlobal(ModuleTy, Elements);
-
- // Create the load function calling the runtime entry point with the module
- // structure
- std::vector<const llvm::Type*> VoidArgs;
- llvm::Function * LoadFunction = llvm::Function::Create(
- llvm::FunctionType::get(llvm::Type::VoidTy, VoidArgs, false),
- llvm::GlobalValue::InternalLinkage, ".objc_load_function",
- &TheModule);
- llvm::BasicBlock *EntryBB = llvm::BasicBlock::Create("entry", LoadFunction);
- llvm::IRBuilder Builder;
- Builder.SetInsertPoint(EntryBB);
- llvm::Value *Register = TheModule.getOrInsertFunction("__objc_exec_class",
- llvm::Type::VoidTy, llvm::PointerType::getUnqual(ModuleTy), NULL);
- Builder.CreateCall(Register, Module);
- Builder.CreateRetVoid();
- return LoadFunction;
-}
-llvm::Function *CGObjCGNU::MethodPreamble(
- const std::string &ClassName,
- const std::string &CategoryName,
- const std::string &MethodName,
- const llvm::Type *ReturnTy,
- const llvm::Type *SelfTy,
- const llvm::Type **ArgTy,
- unsigned ArgC,
- bool isClassMethod,
- bool isVarArg) {
- std::vector<const llvm::Type*> Args;
- if (!ReturnTy->isSingleValueType() && ReturnTy != llvm::Type::VoidTy) {
- Args.push_back(llvm::PointerType::getUnqual(ReturnTy));
- ReturnTy = llvm::Type::VoidTy;
- }
- Args.push_back(SelfTy);
- Args.push_back(SelectorTy);
- Args.insert(Args.end(), ArgTy, ArgTy+ArgC);
-
- llvm::FunctionType *MethodTy = llvm::FunctionType::get(ReturnTy,
- Args,
- isVarArg);
- std::string FunctionName = SymbolNameForMethod(ClassName, CategoryName,
- MethodName, isClassMethod);
-
- llvm::Function *Method = llvm::Function::Create(MethodTy,
- llvm::GlobalValue::InternalLinkage,
- FunctionName,
- &TheModule);
- llvm::Function::arg_iterator AI = Method->arg_begin();
- // Name the struct return argument.
- // FIXME: This is probably the wrong test.
- if (!ReturnTy->isFirstClassType() && ReturnTy != llvm::Type::VoidTy) {
- AI->setName("agg.result");
- ++AI;
- }
- AI->setName("self");
- ++AI;
- AI->setName("_cmd");
- return Method;
-}
-
-CodeGen::CGObjCRuntime *CodeGen::CreateObjCRuntime(CodeGen::CodeGenModule &CGM){
- return new CGObjCGNU(CGM);
-}
diff --git a/Clang/CGObjCRuntime.h b/Clang/CGObjCRuntime.h
deleted file mode 100644
index a5d88c3..0000000
--- a/Clang/CGObjCRuntime.h
+++ /dev/null
@@ -1,126 +0,0 @@
-//===----- CGObjCRuntime.h - Emit LLVM Code from ASTs for a Module --------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This provides an abstract class for Objective-C code generation. Concrete
-// subclasses of this implement code generation for specific Objective-C
-// runtime libraries.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef CLANG_CODEGEN_OBCJRUNTIME_H
-#define CLANG_CODEGEN_OBCJRUNTIME_H
-#include "llvm/ADT/SmallVector.h"
-#include <string>
-
-namespace llvm {
- class IRBuilder;
- class Constant;
- class Type;
- class Value;
- class Module;
- class Function;
-}
-
-namespace clang {
- class Selector;
-
-namespace CodeGen {
- class CodeGenModule;
-
-//FIXME Several methods should be pure virtual but aren't to avoid the
-//partially-implemented subclass breaking.
-
-/// Implements runtime-specific code generation functions.
-class CGObjCRuntime {
-public:
- virtual ~CGObjCRuntime();
-
- /// Generate an Objective-C message send operation
- virtual llvm::Value *GenerateMessageSend(llvm::IRBuilder &Builder,
- const llvm::Type *ReturnTy,
- llvm::Value *Sender,
- llvm::Value *Receiver,
- Selector Sel,
- llvm::Value** ArgV,
- unsigned ArgC) =0;
- /// Generate the function required to register all Objective-C components in
- /// this compilation unit with the runtime library.
- virtual llvm::Function *ModuleInitFunction() =0;
- /// Get a selector for the specified name and type values
- virtual llvm::Value *GetSelector(llvm::IRBuilder &Builder, Selector Sel) = 0;
- /// Generate a constant string object
- virtual llvm::Constant *GenerateConstantString(const char *String,
- const size_t Length) = 0;
- /// Generate a category. A category contains a list of methods (and
- /// accompanying metadata) and a list of protocols.
- virtual void GenerateCategory(const char *ClassName, const char *CategoryName,
- const llvm::SmallVectorImpl<Selector> &InstanceMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<Selector> &ClassMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes,
- const llvm::SmallVectorImpl<std::string> &Protocols) =0;
- /// Generate a class stucture for this class.
- virtual void GenerateClass(
- const char *ClassName,
- const char *SuperClassName,
- const int instanceSize,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &IvarOffsets,
- const llvm::SmallVectorImpl<Selector> &InstanceMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<Selector> &ClassMethodSels,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes,
- const llvm::SmallVectorImpl<std::string> &Protocols) =0;
- /// Generate a reference to the named protocol.
- virtual llvm::Value *GenerateProtocolRef(llvm::IRBuilder &Builder, const char
- *ProtocolName) =0;
- virtual llvm::Value *GenerateMessageSendSuper(llvm::IRBuilder &Builder,
- const llvm::Type *ReturnTy,
- llvm::Value *Sender,
- const char *SuperClassName,
- llvm::Value *Receiver,
- Selector Sel,
- llvm::Value** ArgV,
- unsigned ArgC) = 0;
- /// Generate the named protocol. Protocols contain method metadata but no
- /// implementations.
- virtual void GenerateProtocol(const char *ProtocolName,
- const llvm::SmallVectorImpl<std::string> &Protocols,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &InstanceMethodTypes,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodNames,
- const llvm::SmallVectorImpl<llvm::Constant *> &ClassMethodTypes) =0;
- /// Generate a function preamble for a method with the specified types
- virtual llvm::Function *MethodPreamble(
- const std::string &ClassName,
- const std::string &CategoryName,
- const std::string &MethodName,
- const llvm::Type *ReturnTy,
- const llvm::Type *SelfTy,
- const llvm::Type **ArgTy,
- unsigned ArgC,
- bool isClassMethod,
- bool isVarArg) = 0;
- /// Look up the class for the specified name
- virtual llvm::Value *LookupClass(llvm::IRBuilder &Builder, llvm::Value
- *ClassName) =0;
- /// If instance variable addresses are determined at runtime then this should
- /// return true, otherwise instance variables will be accessed directly from
- /// the structure. If this returns true then @defs is invalid for this
- /// runtime and a warning should be generated.
- virtual bool LateBoundIVars() { return false; }
-};
-
-/// Creates an instance of an Objective-C runtime class.
-//TODO: This should include some way of selecting which runtime to target.
-CGObjCRuntime *CreateObjCRuntime(CodeGenModule &CGM);
-}
-}
-#endif