
that every declaration lives inside a DeclContext. Moved several things that don't have names but were ScopedDecls (and, therefore, NamedDecls) to inherit from Decl rather than NamedDecl, including ObjCImplementationDecl and LinkageSpecDecl. Now, we don't store empty DeclarationNames for these things, nor do we try to insert them into DeclContext's lookup structure. The serialization tests are temporarily disabled. We'll re-enable them once we've sorted out the remaining ownership/serialiazation issues between DeclContexts and TranslationUnion, DeclGroups, etc. llvm-svn: 62562
560 lines
22 KiB
C++
560 lines
22 KiB
C++
//===---- 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/ASTContext.h"
|
|
#include "clang/AST/DeclObjC.h"
|
|
#include "clang/Basic/Diagnostic.h"
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include "llvm/Target/TargetData.h"
|
|
|
|
using namespace clang;
|
|
using namespace CodeGen;
|
|
|
|
/// Emits an instance of NSConstantString representing the object.
|
|
llvm::Value *CodeGenFunction::EmitObjCStringLiteral(const ObjCStringLiteral *E)
|
|
{
|
|
std::string String(E->getString()->getStrData(),
|
|
E->getString()->getByteLength());
|
|
llvm::Constant *C = CGM.getObjCRuntime().GenerateConstantString(String);
|
|
// FIXME: This bitcast should just be made an invariant on the Runtime.
|
|
return llvm::ConstantExpr::getBitCast(C, ConvertType(E->getType()));
|
|
}
|
|
|
|
/// 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::EmitObjCProtocolExpr(const ObjCProtocolExpr *E) {
|
|
// FIXME: This should pass the Decl not the name.
|
|
return CGM.getObjCRuntime().GenerateProtocolRef(Builder, E->getProtocol());
|
|
}
|
|
|
|
|
|
RValue 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;
|
|
bool isClassMessage = false;
|
|
// Find the receiver
|
|
llvm::Value *Receiver;
|
|
if (!ReceiverExpr) {
|
|
const ObjCInterfaceDecl *OID = E->getClassInfo().first;
|
|
|
|
// Very special case, super send in class method. The receiver is
|
|
// self (the class object) and the send uses super semantics.
|
|
if (!OID) {
|
|
assert(E->getClassName()->isStr("super") &&
|
|
"Unexpected missing class interface in message send.");
|
|
isSuperMessage = true;
|
|
Receiver = LoadObjCSelf();
|
|
} else {
|
|
Receiver = Runtime.GetClass(Builder, OID);
|
|
}
|
|
|
|
isClassMessage = true;
|
|
} else if (isa<ObjCSuperExpr>(E->getReceiver())) {
|
|
isSuperMessage = true;
|
|
Receiver = LoadObjCSelf();
|
|
} else {
|
|
Receiver = EmitScalarExpr(E->getReceiver());
|
|
}
|
|
|
|
CallArgList Args;
|
|
for (CallExpr::const_arg_iterator i = E->arg_begin(), e = E->arg_end();
|
|
i != e; ++i)
|
|
Args.push_back(std::make_pair(EmitAnyExprToTemp(*i), (*i)->getType()));
|
|
|
|
if (isSuperMessage) {
|
|
// super is only valid in an Objective-C method
|
|
const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CurFuncDecl);
|
|
return Runtime.GenerateMessageSendSuper(*this, E->getType(),
|
|
E->getSelector(),
|
|
OMD->getClassInterface(),
|
|
Receiver,
|
|
isClassMessage,
|
|
Args);
|
|
}
|
|
return Runtime.GenerateMessageSend(*this, E->getType(), E->getSelector(),
|
|
Receiver, isClassMessage, Args);
|
|
}
|
|
|
|
/// StartObjCMethod - Begin emission of an ObjCMethod. This generates
|
|
/// the LLVM function and sets the other context used by
|
|
/// CodeGenFunction.
|
|
void CodeGenFunction::StartObjCMethod(const ObjCMethodDecl *OMD,
|
|
const ObjCContainerDecl *CD) {
|
|
FunctionArgList Args;
|
|
llvm::Function *Fn = CGM.getObjCRuntime().GenerateMethod(OMD, CD);
|
|
|
|
CGM.SetMethodAttributes(OMD, Fn);
|
|
|
|
Args.push_back(std::make_pair(OMD->getSelfDecl(),
|
|
OMD->getSelfDecl()->getType()));
|
|
Args.push_back(std::make_pair(OMD->getCmdDecl(),
|
|
OMD->getCmdDecl()->getType()));
|
|
|
|
for (unsigned i = 0, e = OMD->getNumParams(); i != e; ++i) {
|
|
ParmVarDecl *IPD = OMD->getParamDecl(i);
|
|
Args.push_back(std::make_pair(IPD, IPD->getType()));
|
|
}
|
|
|
|
StartFunction(OMD, OMD->getResultType(), Fn, Args, OMD->getLocEnd());
|
|
}
|
|
|
|
/// 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) {
|
|
StartObjCMethod(OMD, OMD->getClassInterface());
|
|
EmitStmt(OMD->getBody());
|
|
FinishFunction(cast<CompoundStmt>(OMD->getBody())->getRBracLoc());
|
|
}
|
|
|
|
// FIXME: I wasn't sure about the synthesis approach. If we end up
|
|
// generating an AST for the whole body we can just fall back to
|
|
// having a GenerateFunction which takes the body Stmt.
|
|
|
|
/// GenerateObjCGetter - Generate an Objective-C property getter
|
|
/// function. The given Decl must be an ObjCImplementationDecl. @synthesize
|
|
/// is illegal within a category.
|
|
void CodeGenFunction::GenerateObjCGetter(ObjCImplementationDecl *IMP,
|
|
const ObjCPropertyImplDecl *PID) {
|
|
ObjCIvarDecl *Ivar = PID->getPropertyIvarDecl();
|
|
const ObjCPropertyDecl *PD = PID->getPropertyDecl();
|
|
ObjCMethodDecl *OMD = PD->getGetterMethodDecl();
|
|
assert(OMD && "Invalid call to generate getter (empty method)");
|
|
// FIXME: This is rather murky, we create this here since they will
|
|
// not have been created by Sema for us.
|
|
OMD->createImplicitParams(getContext(), IMP->getClassInterface());
|
|
StartObjCMethod(OMD, IMP->getClassInterface());
|
|
|
|
// Determine if we should use an objc_getProperty call for
|
|
// this. Non-atomic properties are directly evaluated.
|
|
// atomic 'copy' and 'retain' properties are also directly
|
|
// evaluated in gc-only mode.
|
|
if (CGM.getLangOptions().getGCMode() != LangOptions::GCOnly &&
|
|
!(PD->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_nonatomic) &&
|
|
(PD->getSetterKind() == ObjCPropertyDecl::Copy ||
|
|
PD->getSetterKind() == ObjCPropertyDecl::Retain)) {
|
|
llvm::Value *GetPropertyFn =
|
|
CGM.getObjCRuntime().GetPropertyGetFunction();
|
|
|
|
if (!GetPropertyFn) {
|
|
CGM.ErrorUnsupported(PID, "Obj-C getter requiring atomic copy");
|
|
FinishFunction();
|
|
return;
|
|
}
|
|
|
|
// Return (ivar-type) objc_getProperty((id) self, _cmd, offset, true).
|
|
// FIXME: Can't this be simpler? This might even be worse than the
|
|
// corresponding gcc code.
|
|
CodeGenTypes &Types = CGM.getTypes();
|
|
ValueDecl *Cmd = OMD->getCmdDecl();
|
|
llvm::Value *CmdVal = Builder.CreateLoad(LocalDeclMap[Cmd], "cmd");
|
|
QualType IdTy = getContext().getObjCIdType();
|
|
llvm::Value *SelfAsId =
|
|
Builder.CreateBitCast(LoadObjCSelf(), Types.ConvertType(IdTy));
|
|
llvm::Value *Offset = EmitIvarOffset(IMP->getClassInterface(), Ivar);
|
|
llvm::Value *True =
|
|
llvm::ConstantInt::get(Types.ConvertTypeForMem(getContext().BoolTy), 1);
|
|
CallArgList Args;
|
|
Args.push_back(std::make_pair(RValue::get(SelfAsId), IdTy));
|
|
Args.push_back(std::make_pair(RValue::get(CmdVal), Cmd->getType()));
|
|
Args.push_back(std::make_pair(RValue::get(Offset), getContext().LongTy));
|
|
Args.push_back(std::make_pair(RValue::get(True), getContext().BoolTy));
|
|
RValue RV = EmitCall(GetPropertyFn, PD->getType(), Args);
|
|
// We need to fix the type here. Ivars with copy & retain are
|
|
// always objects so we don't need to worry about complex or
|
|
// aggregates.
|
|
RV = RValue::get(Builder.CreateBitCast(RV.getScalarVal(),
|
|
Types.ConvertType(PD->getType())));
|
|
EmitReturnOfRValue(RV, PD->getType());
|
|
} else {
|
|
FieldDecl *Field =
|
|
IMP->getClassInterface()->lookupFieldDeclForIvar(getContext(), Ivar);
|
|
LValue LV = EmitLValueForIvar(LoadObjCSelf(), Ivar, Field, 0);
|
|
if (hasAggregateLLVMType(Ivar->getType())) {
|
|
EmitAggregateCopy(ReturnValue, LV.getAddress(), Ivar->getType());
|
|
}
|
|
else
|
|
EmitReturnOfRValue(EmitLoadOfLValue(LV, Ivar->getType()),
|
|
PD->getType());
|
|
}
|
|
|
|
FinishFunction();
|
|
}
|
|
|
|
/// GenerateObjCSetter - Generate an Objective-C property setter
|
|
/// function. The given Decl must be an ObjCImplementationDecl. @synthesize
|
|
/// is illegal within a category.
|
|
void CodeGenFunction::GenerateObjCSetter(ObjCImplementationDecl *IMP,
|
|
const ObjCPropertyImplDecl *PID) {
|
|
ObjCIvarDecl *Ivar = PID->getPropertyIvarDecl();
|
|
const ObjCPropertyDecl *PD = PID->getPropertyDecl();
|
|
ObjCMethodDecl *OMD = PD->getSetterMethodDecl();
|
|
assert(OMD && "Invalid call to generate setter (empty method)");
|
|
// FIXME: This is rather murky, we create this here since they will
|
|
// not have been created by Sema for us.
|
|
OMD->createImplicitParams(getContext(), IMP->getClassInterface());
|
|
StartObjCMethod(OMD, IMP->getClassInterface());
|
|
|
|
bool IsCopy = PD->getSetterKind() == ObjCPropertyDecl::Copy;
|
|
bool IsAtomic =
|
|
!(PD->getPropertyAttributes() & ObjCPropertyDecl::OBJC_PR_nonatomic);
|
|
|
|
// Determine if we should use an objc_setProperty call for
|
|
// this. Properties with 'copy' semantics always use it, as do
|
|
// non-atomic properties with 'release' semantics as long as we are
|
|
// not in gc-only mode.
|
|
if (IsCopy ||
|
|
(CGM.getLangOptions().getGCMode() != LangOptions::GCOnly &&
|
|
PD->getSetterKind() == ObjCPropertyDecl::Retain)) {
|
|
llvm::Value *SetPropertyFn =
|
|
CGM.getObjCRuntime().GetPropertySetFunction();
|
|
|
|
if (!SetPropertyFn) {
|
|
CGM.ErrorUnsupported(PID, "Obj-C getter requiring atomic copy");
|
|
FinishFunction();
|
|
return;
|
|
}
|
|
|
|
// Emit objc_setProperty((id) self, _cmd, offset, arg,
|
|
// <is-atomic>, <is-copy>).
|
|
// FIXME: Can't this be simpler? This might even be worse than the
|
|
// corresponding gcc code.
|
|
CodeGenTypes &Types = CGM.getTypes();
|
|
ValueDecl *Cmd = OMD->getCmdDecl();
|
|
llvm::Value *CmdVal = Builder.CreateLoad(LocalDeclMap[Cmd], "cmd");
|
|
QualType IdTy = getContext().getObjCIdType();
|
|
llvm::Value *SelfAsId =
|
|
Builder.CreateBitCast(LoadObjCSelf(), Types.ConvertType(IdTy));
|
|
llvm::Value *Offset = EmitIvarOffset(IMP->getClassInterface(), Ivar);
|
|
llvm::Value *Arg = LocalDeclMap[OMD->getParamDecl(0)];
|
|
llvm::Value *ArgAsId =
|
|
Builder.CreateBitCast(Builder.CreateLoad(Arg, "arg"),
|
|
Types.ConvertType(IdTy));
|
|
llvm::Value *True =
|
|
llvm::ConstantInt::get(Types.ConvertTypeForMem(getContext().BoolTy), 1);
|
|
llvm::Value *False =
|
|
llvm::ConstantInt::get(Types.ConvertTypeForMem(getContext().BoolTy), 0);
|
|
CallArgList Args;
|
|
Args.push_back(std::make_pair(RValue::get(SelfAsId), IdTy));
|
|
Args.push_back(std::make_pair(RValue::get(CmdVal), Cmd->getType()));
|
|
Args.push_back(std::make_pair(RValue::get(Offset), getContext().LongTy));
|
|
Args.push_back(std::make_pair(RValue::get(ArgAsId), IdTy));
|
|
Args.push_back(std::make_pair(RValue::get(IsAtomic ? True : False),
|
|
getContext().BoolTy));
|
|
Args.push_back(std::make_pair(RValue::get(IsCopy ? True : False),
|
|
getContext().BoolTy));
|
|
EmitCall(SetPropertyFn, PD->getType(), Args);
|
|
} else {
|
|
SourceLocation Loc = PD->getLocation();
|
|
ValueDecl *Self = OMD->getSelfDecl();
|
|
ObjCIvarDecl *Ivar = PID->getPropertyIvarDecl();
|
|
DeclRefExpr Base(Self, Self->getType(), Loc);
|
|
ParmVarDecl *ArgDecl = OMD->getParamDecl(0);
|
|
DeclRefExpr Arg(ArgDecl, ArgDecl->getType(), Loc);
|
|
ObjCInterfaceDecl *OI = IMP->getClassInterface();
|
|
ObjCIvarRefExpr IvarRef(Ivar, Ivar->getType(), Loc, &Base,
|
|
true, true);
|
|
getContext().setFieldDecl(OI, Ivar, &IvarRef);
|
|
BinaryOperator Assign(&IvarRef, &Arg, BinaryOperator::Assign,
|
|
Ivar->getType(), Loc);
|
|
EmitStmt(&Assign);
|
|
}
|
|
|
|
FinishFunction();
|
|
}
|
|
|
|
llvm::Value *CodeGenFunction::LoadObjCSelf() {
|
|
const ObjCMethodDecl *OMD = cast<ObjCMethodDecl>(CurFuncDecl);
|
|
return Builder.CreateLoad(LocalDeclMap[OMD->getSelfDecl()], "self");
|
|
}
|
|
|
|
RValue CodeGenFunction::EmitObjCPropertyGet(const Expr *Exp) {
|
|
// FIXME: Split it into two separate routines.
|
|
if (const ObjCPropertyRefExpr *E = dyn_cast<ObjCPropertyRefExpr>(Exp)) {
|
|
Selector S = E->getProperty()->getGetterName();
|
|
return CGM.getObjCRuntime().
|
|
GenerateMessageSend(*this, Exp->getType(), S,
|
|
EmitScalarExpr(E->getBase()),
|
|
false, CallArgList());
|
|
}
|
|
else {
|
|
const ObjCKVCRefExpr *KE = cast<ObjCKVCRefExpr>(Exp);
|
|
Selector S = KE->getGetterMethod()->getSelector();
|
|
return CGM.getObjCRuntime().
|
|
GenerateMessageSend(*this, Exp->getType(), S,
|
|
EmitScalarExpr(KE->getBase()),
|
|
false, CallArgList());
|
|
}
|
|
}
|
|
|
|
void CodeGenFunction::EmitObjCPropertySet(const Expr *Exp,
|
|
RValue Src) {
|
|
// FIXME: Split it into two separate routines.
|
|
if (const ObjCPropertyRefExpr *E = dyn_cast<ObjCPropertyRefExpr>(Exp)) {
|
|
Selector S = E->getProperty()->getSetterName();
|
|
CallArgList Args;
|
|
Args.push_back(std::make_pair(Src, E->getType()));
|
|
CGM.getObjCRuntime().GenerateMessageSend(*this, getContext().VoidTy, S,
|
|
EmitScalarExpr(E->getBase()),
|
|
false, Args);
|
|
}
|
|
else if (const ObjCKVCRefExpr *E = dyn_cast<ObjCKVCRefExpr>(Exp)) {
|
|
Selector S = E->getSetterMethod()->getSelector();
|
|
CallArgList Args;
|
|
Args.push_back(std::make_pair(Src, E->getType()));
|
|
CGM.getObjCRuntime().GenerateMessageSend(*this, getContext().VoidTy, S,
|
|
EmitScalarExpr(E->getBase()),
|
|
false, Args);
|
|
}
|
|
else
|
|
assert (0 && "bad expression node in EmitObjCPropertySet");
|
|
}
|
|
|
|
void CodeGenFunction::EmitObjCForCollectionStmt(const ObjCForCollectionStmt &S)
|
|
{
|
|
llvm::Function *EnumerationMutationFn =
|
|
CGM.getObjCRuntime().EnumerationMutationFunction();
|
|
llvm::Value *DeclAddress;
|
|
QualType ElementTy;
|
|
|
|
if (!EnumerationMutationFn) {
|
|
CGM.ErrorUnsupported(&S, "Obj-C fast enumeration for this runtime");
|
|
return;
|
|
}
|
|
|
|
if (const DeclStmt *SD = dyn_cast<DeclStmt>(S.getElement())) {
|
|
EmitStmt(SD);
|
|
assert(HaveInsertPoint() && "DeclStmt destroyed insert point!");
|
|
const Decl* D = SD->getSolitaryDecl();
|
|
ElementTy = cast<ValueDecl>(D)->getType();
|
|
DeclAddress = LocalDeclMap[D];
|
|
} else {
|
|
ElementTy = cast<Expr>(S.getElement())->getType();
|
|
DeclAddress = 0;
|
|
}
|
|
|
|
// Fast enumeration state.
|
|
QualType StateTy = getContext().getObjCFastEnumerationStateType();
|
|
llvm::AllocaInst *StatePtr = CreateTempAlloca(ConvertType(StateTy),
|
|
"state.ptr");
|
|
StatePtr->setAlignment(getContext().getTypeAlign(StateTy) >> 3);
|
|
EmitMemSetToZero(StatePtr, StateTy);
|
|
|
|
// Number of elements in the items array.
|
|
static const unsigned NumItems = 16;
|
|
|
|
// Get selector
|
|
llvm::SmallVector<IdentifierInfo*, 3> II;
|
|
II.push_back(&CGM.getContext().Idents.get("countByEnumeratingWithState"));
|
|
II.push_back(&CGM.getContext().Idents.get("objects"));
|
|
II.push_back(&CGM.getContext().Idents.get("count"));
|
|
Selector FastEnumSel = CGM.getContext().Selectors.getSelector(II.size(),
|
|
&II[0]);
|
|
|
|
QualType ItemsTy =
|
|
getContext().getConstantArrayType(getContext().getObjCIdType(),
|
|
llvm::APInt(32, NumItems),
|
|
ArrayType::Normal, 0);
|
|
llvm::Value *ItemsPtr = CreateTempAlloca(ConvertType(ItemsTy), "items.ptr");
|
|
|
|
llvm::Value *Collection = EmitScalarExpr(S.getCollection());
|
|
|
|
CallArgList Args;
|
|
Args.push_back(std::make_pair(RValue::get(StatePtr),
|
|
getContext().getPointerType(StateTy)));
|
|
|
|
Args.push_back(std::make_pair(RValue::get(ItemsPtr),
|
|
getContext().getPointerType(ItemsTy)));
|
|
|
|
const llvm::Type *UnsignedLongLTy = ConvertType(getContext().UnsignedLongTy);
|
|
llvm::Constant *Count = llvm::ConstantInt::get(UnsignedLongLTy, NumItems);
|
|
Args.push_back(std::make_pair(RValue::get(Count),
|
|
getContext().UnsignedLongTy));
|
|
|
|
RValue CountRV =
|
|
CGM.getObjCRuntime().GenerateMessageSend(*this,
|
|
getContext().UnsignedLongTy,
|
|
FastEnumSel,
|
|
Collection, false, Args);
|
|
|
|
llvm::Value *LimitPtr = CreateTempAlloca(UnsignedLongLTy, "limit.ptr");
|
|
Builder.CreateStore(CountRV.getScalarVal(), LimitPtr);
|
|
|
|
llvm::BasicBlock *NoElements = createBasicBlock("noelements");
|
|
llvm::BasicBlock *SetStartMutations = createBasicBlock("setstartmutations");
|
|
|
|
llvm::Value *Limit = Builder.CreateLoad(LimitPtr);
|
|
llvm::Value *Zero = llvm::Constant::getNullValue(UnsignedLongLTy);
|
|
|
|
llvm::Value *IsZero = Builder.CreateICmpEQ(Limit, Zero, "iszero");
|
|
Builder.CreateCondBr(IsZero, NoElements, SetStartMutations);
|
|
|
|
EmitBlock(SetStartMutations);
|
|
|
|
llvm::Value *StartMutationsPtr =
|
|
CreateTempAlloca(UnsignedLongLTy);
|
|
|
|
llvm::Value *StateMutationsPtrPtr =
|
|
Builder.CreateStructGEP(StatePtr, 2, "mutationsptr.ptr");
|
|
llvm::Value *StateMutationsPtr = Builder.CreateLoad(StateMutationsPtrPtr,
|
|
"mutationsptr");
|
|
|
|
llvm::Value *StateMutations = Builder.CreateLoad(StateMutationsPtr,
|
|
"mutations");
|
|
|
|
Builder.CreateStore(StateMutations, StartMutationsPtr);
|
|
|
|
llvm::BasicBlock *LoopStart = createBasicBlock("loopstart");
|
|
EmitBlock(LoopStart);
|
|
|
|
llvm::Value *CounterPtr = CreateTempAlloca(UnsignedLongLTy, "counter.ptr");
|
|
Builder.CreateStore(Zero, CounterPtr);
|
|
|
|
llvm::BasicBlock *LoopBody = createBasicBlock("loopbody");
|
|
EmitBlock(LoopBody);
|
|
|
|
StateMutationsPtr = Builder.CreateLoad(StateMutationsPtrPtr, "mutationsptr");
|
|
StateMutations = Builder.CreateLoad(StateMutationsPtr, "statemutations");
|
|
|
|
llvm::Value *StartMutations = Builder.CreateLoad(StartMutationsPtr,
|
|
"mutations");
|
|
llvm::Value *MutationsEqual = Builder.CreateICmpEQ(StateMutations,
|
|
StartMutations,
|
|
"tobool");
|
|
|
|
|
|
llvm::BasicBlock *WasMutated = createBasicBlock("wasmutated");
|
|
llvm::BasicBlock *WasNotMutated = createBasicBlock("wasnotmutated");
|
|
|
|
Builder.CreateCondBr(MutationsEqual, WasNotMutated, WasMutated);
|
|
|
|
EmitBlock(WasMutated);
|
|
llvm::Value *V =
|
|
Builder.CreateBitCast(Collection,
|
|
ConvertType(getContext().getObjCIdType()),
|
|
"tmp");
|
|
Builder.CreateCall(EnumerationMutationFn, V);
|
|
|
|
EmitBlock(WasNotMutated);
|
|
|
|
llvm::Value *StateItemsPtr =
|
|
Builder.CreateStructGEP(StatePtr, 1, "stateitems.ptr");
|
|
|
|
llvm::Value *Counter = Builder.CreateLoad(CounterPtr, "counter");
|
|
|
|
llvm::Value *EnumStateItems = Builder.CreateLoad(StateItemsPtr,
|
|
"stateitems");
|
|
|
|
llvm::Value *CurrentItemPtr =
|
|
Builder.CreateGEP(EnumStateItems, Counter, "currentitem.ptr");
|
|
|
|
llvm::Value *CurrentItem = Builder.CreateLoad(CurrentItemPtr, "currentitem");
|
|
|
|
// Cast the item to the right type.
|
|
CurrentItem = Builder.CreateBitCast(CurrentItem,
|
|
ConvertType(ElementTy), "tmp");
|
|
|
|
if (!DeclAddress) {
|
|
LValue LV = EmitLValue(cast<Expr>(S.getElement()));
|
|
|
|
// Set the value to null.
|
|
Builder.CreateStore(CurrentItem, LV.getAddress());
|
|
} else
|
|
Builder.CreateStore(CurrentItem, DeclAddress);
|
|
|
|
// Increment the counter.
|
|
Counter = Builder.CreateAdd(Counter,
|
|
llvm::ConstantInt::get(UnsignedLongLTy, 1));
|
|
Builder.CreateStore(Counter, CounterPtr);
|
|
|
|
llvm::BasicBlock *LoopEnd = createBasicBlock("loopend");
|
|
llvm::BasicBlock *AfterBody = createBasicBlock("afterbody");
|
|
|
|
BreakContinueStack.push_back(BreakContinue(LoopEnd, AfterBody,
|
|
ObjCEHStack.size()));
|
|
|
|
EmitStmt(S.getBody());
|
|
|
|
BreakContinueStack.pop_back();
|
|
|
|
EmitBlock(AfterBody);
|
|
|
|
llvm::BasicBlock *FetchMore = createBasicBlock("fetchmore");
|
|
|
|
Counter = Builder.CreateLoad(CounterPtr);
|
|
Limit = Builder.CreateLoad(LimitPtr);
|
|
llvm::Value *IsLess = Builder.CreateICmpULT(Counter, Limit, "isless");
|
|
Builder.CreateCondBr(IsLess, LoopBody, FetchMore);
|
|
|
|
// Fetch more elements.
|
|
EmitBlock(FetchMore);
|
|
|
|
CountRV =
|
|
CGM.getObjCRuntime().GenerateMessageSend(*this,
|
|
getContext().UnsignedLongTy,
|
|
FastEnumSel,
|
|
Collection, false, Args);
|
|
Builder.CreateStore(CountRV.getScalarVal(), LimitPtr);
|
|
Limit = Builder.CreateLoad(LimitPtr);
|
|
|
|
IsZero = Builder.CreateICmpEQ(Limit, Zero, "iszero");
|
|
Builder.CreateCondBr(IsZero, NoElements, LoopStart);
|
|
|
|
// No more elements.
|
|
EmitBlock(NoElements);
|
|
|
|
if (!DeclAddress) {
|
|
// If the element was not a declaration, set it to be null.
|
|
|
|
LValue LV = EmitLValue(cast<Expr>(S.getElement()));
|
|
|
|
// Set the value to null.
|
|
Builder.CreateStore(llvm::Constant::getNullValue(ConvertType(ElementTy)),
|
|
LV.getAddress());
|
|
}
|
|
|
|
EmitBlock(LoopEnd);
|
|
}
|
|
|
|
void CodeGenFunction::EmitObjCAtTryStmt(const ObjCAtTryStmt &S)
|
|
{
|
|
CGM.getObjCRuntime().EmitTryOrSynchronizedStmt(*this, S);
|
|
}
|
|
|
|
void CodeGenFunction::EmitObjCAtThrowStmt(const ObjCAtThrowStmt &S)
|
|
{
|
|
CGM.getObjCRuntime().EmitThrowStmt(*this, S);
|
|
}
|
|
|
|
void CodeGenFunction::EmitObjCAtSynchronizedStmt(
|
|
const ObjCAtSynchronizedStmt &S)
|
|
{
|
|
CGM.getObjCRuntime().EmitTryOrSynchronizedStmt(*this, S);
|
|
}
|
|
|
|
CGObjCRuntime::~CGObjCRuntime() {}
|