#include "CodeGenModule.h"
#include "clang/AST/Builtins.h"
#include "clang/AST/Expr.h"
+#include "llvm/Constant.h"
using namespace clang;
using namespace CodeGen;
RValue CodeGenFunction::EmitBuiltinExpr(unsigned builtinID, const CallExpr *E)
{
switch (builtinID) {
+ case Builtin::BI__builtin___CFStringMakeConstantString: {
+ const Expr *Arg = E->getArg(0);
+
+ while (const ParenExpr *PE = dyn_cast<const ParenExpr>(Arg))
+ Arg = PE->getSubExpr();
+
+ const StringLiteral *Literal = cast<const StringLiteral>(Arg);
+ std::string S(Literal->getStrData(), Literal->getByteLength());
+
+ return RValue::get(CGM.GetAddrOfConstantCFString(S));
+ }
default:
assert(0 && "Unknown builtin id");
}
CodeGenModule::CodeGenModule(ASTContext &C, llvm::Module &M)
- : Context(C), TheModule(M), Types(C, M) {}
+ : Context(C), TheModule(M), Types(C, M), CFConstantStringClassRef(0) {}
llvm::Constant *CodeGenModule::GetAddrOfGlobalDecl(const Decl *D) {
// See if it is already in the map.
}
return MemCpyFn = llvm::Intrinsic::getDeclaration(&TheModule, IID);
}
+
+llvm::Constant *CodeGenModule::GetAddrOfConstantCFString(const std::string &str)
+{
+ llvm::StringMapEntry<llvm::Constant *> &Entry =
+ CFConstantStringMap.GetOrCreateValue(&str[0], &str[str.length()]);
+
+ if (Entry.getValue())
+ return Entry.getValue();
+
+ std::vector<llvm::Constant*> Fields;
+
+ if (!CFConstantStringClassRef) {
+ const llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy);
+ Ty = llvm::ArrayType::get(Ty, 0);
+
+ CFConstantStringClassRef =
+ new llvm::GlobalVariable(Ty, false,
+ llvm::GlobalVariable::ExternalLinkage, 0,
+ "__CFConstantStringClassReference",
+ &getModule());
+ }
+
+ // Class pointer.
+ llvm::Constant *Zero = llvm::Constant::getNullValue(llvm::Type::Int32Ty);
+ llvm::Constant *Zeros[] = { Zero, Zero };
+ llvm::Constant *C =
+ llvm::ConstantExpr::getGetElementPtr(CFConstantStringClassRef, Zeros, 2);
+ Fields.push_back(C);
+
+ // Flags.
+ const llvm::Type *Ty = getTypes().ConvertType(getContext().IntTy);
+ Fields.push_back(llvm::ConstantInt::get(Ty, 1992));
+
+ // String pointer.
+ C = llvm::ConstantArray::get(str);
+ C = new llvm::GlobalVariable(C->getType(), true,
+ llvm::GlobalValue::InternalLinkage,
+ C, ".str", &getModule());
+
+ C = llvm::ConstantExpr::getGetElementPtr(C, Zeros, 2);
+ Fields.push_back(C);
+
+ // String length.
+ Ty = getTypes().ConvertType(getContext().LongTy);
+ Fields.push_back(llvm::ConstantInt::get(Ty, str.length()));
+
+ // The struct.
+ Ty = getTypes().ConvertType(getContext().getCFConstantStringType());
+ C = llvm::ConstantStruct::get(cast<llvm::StructType>(Ty), Fields);
+ C = new llvm::GlobalVariable(C->getType(), true,
+ llvm::GlobalVariable::InternalLinkage,
+ C, "", &getModule());
+
+ Entry.setValue(C);
+ return C;
+}
#include "CodeGenTypes.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringMap.h"
namespace llvm {
class Module;
llvm::Function *MemCpyFn;
llvm::DenseMap<const Decl*, llvm::Constant*> GlobalDeclMap;
+
+ llvm::StringMap<llvm::Constant*> CFConstantStringMap;
+ llvm::Constant *CFConstantStringClassRef;
public:
CodeGenModule(ASTContext &C, llvm::Module &M);
CodeGenTypes &getTypes() { return Types; }
llvm::Constant *GetAddrOfGlobalDecl(const Decl *D);
-
+ llvm::Constant *GetAddrOfConstantCFString(const std::string& str);
llvm::Function *getMemCpyFn();
void EmitFunction(const FunctionDecl *FD);
case Type::Tagged:
const TagType &TT = cast<TagType>(Ty);
const TagDecl *TD = TT.getDecl();
- llvm::Type *ResultType;
+ llvm::Type *&ResultType = TagDeclTypes[TD];
+ if (ResultType)
+ return ResultType;
+
if (!TD->isDefinition()) {
ResultType = llvm::OpaqueType::get();
} else {
#ifndef CODEGEN_CODEGENTYPES_H
#define CODEGEN_CODEGENTYPES_H
+#include "llvm/ADT/DenseMap.h"
#include <vector>
namespace llvm {
namespace clang {
class ASTContext;
+ class TagDecl;
class TargetInfo;
class QualType;
class FunctionTypeProto;
ASTContext &Context;
TargetInfo &Target;
llvm::Module& TheModule;
+
+ llvm::DenseMap<const TagDecl*, llvm::Type*> TagDeclTypes;
public:
CodeGenTypes(ASTContext &Ctx, llvm::Module &M);
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DE928B7E0C0A615600231DA4 /* CodeGenModule.cpp */,
DEEBC3BB0C2363BC00A9FE82 /* CodeGenTypes.cpp */,
DEEBC3B90C2363B800A9FE82 /* CodeGenTypes.h */,
+ 1ABC36930C7A4BDC006DB0AB /* CGBuiltin.cpp */,
DE4264FB0C113592005A861D /* CGDecl.cpp */,
DEF2EFF20C6CDD74000C4259 /* CGAggExpr.cpp */,
DE4772FB0C10EAEC002239E8 /* CGExpr.cpp */,
08FB7793FE84155DC02AAC07 /* Project object */ = {
isa = PBXProject;
buildConfigurationList = 1DEB923508733DC60010E9CD /* Build configuration list for PBXProject "clang" */;
+ compatibilityVersion = "Xcode 2.4";
hasScannedForEncodings = 1;
mainGroup = 08FB7794FE84155DC02AAC07 /* clang */;
projectDirPath = "";
+ projectRoot = "";
targets = (
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);
DEF2EDA70C6A4252000C4259 /* StmtDumper.cpp in Sources */,
DEF2EFF30C6CDD74000C4259 /* CGAggExpr.cpp in Sources */,
DEF2F0100C6CFED5000C4259 /* SemaChecking.cpp in Sources */,
+ 1ABC36940C7A4BDC006DB0AB /* CGBuiltin.cpp in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
};