mutable unsigned CachedFieldIndex : 31;
/// \brief An InClassInitStyle value, and either a bit width expression (if
- /// the InClassInitStyle value is ICIS_NoInit), or a pointer to the in-class
- /// initializer for this field (otherwise).
+ /// the InClassInitStyle value is ICIS_NoInit) in struct/class, or a captured
+ /// variable length array bound in a lambda expression, or a pointer to the
+ /// in-class initializer for this field (otherwise).
///
/// We can safely combine these two because in-class initializers are not
/// permitted for bit-fields.
/// If the InClassInitStyle is not ICIS_NoInit and the initializer is null,
/// then this field has an in-class initializer which has not yet been parsed
/// and attached.
- llvm::PointerIntPair<Expr *, 2, unsigned> InitializerOrBitWidth;
+ llvm::PointerIntPair<void *, 2, unsigned> InitializerOrBitWidth;
protected:
FieldDecl(Kind DK, DeclContext *DC, SourceLocation StartLoc,
SourceLocation IdLoc, IdentifierInfo *Id,
/// isMutable - Determines whether this field is mutable (C++ only).
bool isMutable() const { return Mutable; }
- /// isBitfield - Determines whether this field is a bitfield.
- bool isBitField() const {
- return getInClassInitStyle() == ICIS_NoInit &&
- InitializerOrBitWidth.getPointer();
- }
+ /// \brief Determines whether this field is a bitfield.
+ bool isBitField() const;
/// @brief Determines whether this is an unnamed bitfield.
bool isUnnamedBitfield() const { return isBitField() && !getDeclName(); }
bool isAnonymousStructOrUnion() const;
Expr *getBitWidth() const {
- return isBitField() ? InitializerOrBitWidth.getPointer() : nullptr;
+ return isBitField()
+ ? static_cast<Expr *>(InitializerOrBitWidth.getPointer())
+ : nullptr;
}
unsigned getBitWidthValue(const ASTContext &Ctx) const;
/// in-class initializer, but this returns null, then we have not parsed and
/// attached it yet.
Expr *getInClassInitializer() const {
- return hasInClassInitializer() ? InitializerOrBitWidth.getPointer()
- : nullptr;
+ return hasInClassInitializer()
+ ? static_cast<Expr *>(InitializerOrBitWidth.getPointer())
+ : nullptr;
}
/// setInClassInitializer - Set the C++11 in-class initializer for this
/// member.
InitializerOrBitWidth.setInt(ICIS_NoInit);
}
+ /// \brief Determine whether this member captures the variable length array
+ /// type.
+ bool hasCapturedVLAType() const;
+ /// \brief Get the captured variable length array type.
+ const VariableArrayType *getCapturedVLAType() const {
+ return hasCapturedVLAType() ? static_cast<const VariableArrayType *>(
+ InitializerOrBitWidth.getPointer())
+ : nullptr;
+ }
+ /// \brief Set the captured variable length array type for this field.
+ void setCapturedVLAType(const VariableArrayType *VLAType);
+
/// getParent - Returns the parent of this field declaration, which
/// is the struct in which this method is defined.
const RecordDecl *getParent() const {
/// \endcode
bool isInjectedClassName() const;
+ /// \brief Determine whether this record is a class describing a lambda
+ /// function object.
+ bool isLambda() const;
+
/// getDefinition - Returns the RecordDecl that actually defines
/// this struct/union/class. When determining whether or not a
/// struct/union/class is completely defined, one should use this
/// \brief Determine whether this capture handles the C++ \c this
/// pointer.
- bool capturesThis() const { return DeclAndBits.getPointer() == nullptr; }
+ bool capturesThis() const {
+ return (DeclAndBits.getPointer() == nullptr) &&
+ !(DeclAndBits.getInt() & Capture_ByCopy);
+ }
/// \brief Determine whether this capture handles a variable.
bool capturesVariable() const {
return dyn_cast_or_null<VarDecl>(DeclAndBits.getPointer());
}
+ /// \brief Determine whether this captures a variable length array bound
+ /// expression.
+ bool capturesVLAType() const {
+ return (DeclAndBits.getPointer() == nullptr) &&
+ (DeclAndBits.getInt() & Capture_ByCopy);
+ }
+
/// \brief Determine whether this is an init-capture.
bool isInitCapture() const {
return capturesVariable() && getCapturedVar()->isInitCapture();
"'this' cannot be %select{implicitly |}0captured in this context">;
def err_lambda_capture_anonymous_var : Error<
"unnamed variable cannot be implicitly captured in a lambda expression">;
- def err_lambda_capture_vm_type : Error<
- "variable %0 with variably modified type cannot be captured in "
- "a lambda expression">;
def err_lambda_capture_flexarray_type : Error<
"variable %0 with flexible array member cannot be captured in "
"a lambda expression">;
enum LambdaCaptureKind {
LCK_This, ///< Capturing the \c this pointer
LCK_ByCopy, ///< Capturing by copy (a.k.a., by value)
- LCK_ByRef ///< Capturing by reference
+ LCK_ByRef, ///< Capturing by reference
+ LCK_VLAType ///< Capturing variable-length array type
};
} // end namespace clang
/// capture (if this is a capture and not an init-capture). The expression
/// is only required if we are capturing ByVal and the variable's type has
/// a non-trivial copy constructor.
- llvm::PointerIntPair<Expr*, 2, CaptureKind> InitExprAndCaptureKind;
+ llvm::PointerIntPair<void *, 2, CaptureKind> InitExprAndCaptureKind;
/// \brief The source location at which the first capture occurred.
SourceLocation Loc;
return InitExprAndCaptureKind.getInt() == Cap_This;
}
bool isVariableCapture() const {
- return InitExprAndCaptureKind.getInt() != Cap_This;
+ return InitExprAndCaptureKind.getInt() != Cap_This && !isVLATypeCapture();
}
bool isCopyCapture() const {
- return InitExprAndCaptureKind.getInt() == Cap_ByCopy;
+ return InitExprAndCaptureKind.getInt() == Cap_ByCopy &&
+ !isVLATypeCapture();
}
bool isReferenceCapture() const {
return InitExprAndCaptureKind.getInt() == Cap_ByRef;
bool isBlockCapture() const {
return InitExprAndCaptureKind.getInt() == Cap_Block;
}
- bool isNested() { return VarAndNested.getInt(); }
+ bool isVLATypeCapture() const {
+ return InitExprAndCaptureKind.getInt() == Cap_ByCopy &&
+ getVariable() == nullptr;
+ }
+ bool isNested() const { return VarAndNested.getInt(); }
VarDecl *getVariable() const {
return VarAndNested.getPointer();
QualType getCaptureType() const { return CaptureType; }
Expr *getInitExpr() const {
- return InitExprAndCaptureKind.getPointer();
+ assert(!isVLATypeCapture() && "no init expression for type capture");
+ return static_cast<Expr *>(InitExprAndCaptureKind.getPointer());
}
};
CaptureMap[Var] = Captures.size();
}
+ void addVLATypeCapture(SourceLocation Loc, QualType CaptureType) {
+ Captures.push_back(Capture(/*Var*/ nullptr, /*isBlock*/ false,
+ /*isByref*/ false, /*isNested*/ false, Loc,
+ /*EllipsisLoc*/ SourceLocation(), CaptureType,
+ /*Cpy*/ nullptr));
+ }
+
void addThisCapture(bool isNested, SourceLocation Loc, QualType CaptureType,
Expr *Cpy);
bool isCaptured(VarDecl *Var) const {
return CaptureMap.count(Var);
}
-
+
+ /// \brief Determine whether the given variable-array type has been captured.
+ bool isVLATypeCaptured(const VariableArrayType *VAT) const;
+
/// \brief Retrieve the capture of the given variable, if it has been
/// captured already.
Capture &getCapture(VarDecl *Var) {
return false;
}
+bool FieldDecl::isBitField() const {
+ if (getInClassInitStyle() == ICIS_NoInit &&
+ InitializerOrBitWidth.getPointer()) {
+ assert(getDeclContext() && "No parent context for FieldDecl");
+ return !getDeclContext()->isRecord() || !getParent()->isLambda();
+ }
+ return false;
+}
+
unsigned FieldDecl::getBitWidthValue(const ASTContext &Ctx) const {
assert(isBitField() && "not a bitfield");
- Expr *BitWidth = InitializerOrBitWidth.getPointer();
+ Expr *BitWidth = static_cast<Expr *>(InitializerOrBitWidth.getPointer());
return BitWidth->EvaluateKnownConstInt(Ctx).getZExtValue();
}
}
SourceRange FieldDecl::getSourceRange() const {
- if (const Expr *E = InitializerOrBitWidth.getPointer())
+ if (const Expr *E =
+ static_cast<const Expr *>(InitializerOrBitWidth.getPointer()))
return SourceRange(getInnerLocStart(), E->getLocEnd());
return DeclaratorDecl::getSourceRange();
}
void FieldDecl::setBitWidth(Expr *Width) {
assert(!InitializerOrBitWidth.getPointer() && !hasInClassInitializer() &&
- "bit width or initializer already set");
+ "bit width, initializer or captured type already set");
InitializerOrBitWidth.setPointer(Width);
}
void FieldDecl::setInClassInitializer(Expr *Init) {
assert(!InitializerOrBitWidth.getPointer() && hasInClassInitializer() &&
- "bit width or initializer already set");
+ "bit width, initializer or captured expr already set");
InitializerOrBitWidth.setPointer(Init);
}
+bool FieldDecl::hasCapturedVLAType() const {
+ return getDeclContext()->isRecord() && getParent()->isLambda() &&
+ InitializerOrBitWidth.getPointer();
+}
+
+void FieldDecl::setCapturedVLAType(const VariableArrayType *VLAType) {
+ assert(getParent()->isLambda() && "capturing type in non-lambda.");
+ assert(!InitializerOrBitWidth.getPointer() && !hasInClassInitializer() &&
+ "bit width, initializer or captured type already set");
+ InitializerOrBitWidth.setPointer(const_cast<VariableArrayType *>(VLAType));
+}
+
//===----------------------------------------------------------------------===//
// TagDecl Implementation
//===----------------------------------------------------------------------===//
cast<RecordDecl>(getDeclContext())->getDeclName() == getDeclName();
}
+bool RecordDecl::isLambda() const {
+ if (auto RD = dyn_cast<CXXRecordDecl>(this))
+ return RD->isLambda();
+ return false;
+}
+
RecordDecl::field_iterator RecordDecl::field_begin() const {
if (hasExternalLexicalStorage() && !LoadedFieldsFromExternalStorage)
LoadFieldsFromExternalStorage();
case LCK_ByRef:
assert(Var && "capture must have a variable!");
break;
+ case LCK_VLAType:
+ assert(!Var && "VLA type capture cannot have a variable!");
+ Bits |= Capture_ByCopy;
+ break;
}
DeclAndBits.setInt(Bits);
}
LambdaCaptureKind LambdaCapture::getCaptureKind() const {
Decl *D = DeclAndBits.getPointer();
+ bool CapByCopy = DeclAndBits.getInt() & Capture_ByCopy;
if (!D)
- return LCK_This;
+ return CapByCopy ? LCK_VLAType : LCK_This;
- return (DeclAndBits.getInt() & Capture_ByCopy) ? LCK_ByCopy : LCK_ByRef;
+ return CapByCopy ? LCK_ByCopy : LCK_ByRef;
}
LambdaExpr::LambdaExpr(QualType T,
case LCK_ByCopy:
OS << C->getCapturedVar()->getName();
break;
+ case LCK_VLAType:
+ llvm_unreachable("VLA type in explicit captures.");
}
if (C->isInitCapture())
VisitDecl(C->getCapturedVar());
ID.AddBoolean(C->isPackExpansion());
break;
+ case LCK_VLAType:
+ llvm_unreachable("VLA type in explicit captures.");
}
}
// Note: If we actually needed to be able to match lambda
C.getLocation(), Field->getAccess(),
layout.getFieldOffset(fieldno), VUnit, RecordTy);
elements.push_back(fieldType);
- } else {
+ } else if (C.capturesThis()) {
// TODO: Need to handle 'this' in some way by probably renaming the
// this of the lambda class and having a field member of 'this' or
// by using AT_object_pointer for the function and having that be
// used as 'this' for semantic references.
- assert(C.capturesThis() && "Field that isn't captured and isn't this?");
FieldDecl *f = *Field;
llvm::DIFile VUnit = getOrCreateFile(f->getLocation());
QualType type = f->getType();
void CodeGenFunction::EmitLambdaExpr(const LambdaExpr *E, AggValueSlot Slot) {
RunCleanupsScope Scope(*this);
- LValue SlotLV = MakeAddrLValue(Slot.getAddr(), E->getType(),
- Slot.getAlignment());
+ LValue SlotLV =
+ MakeAddrLValue(Slot.getAddr(), E->getType(), Slot.getAlignment());
CXXRecordDecl::field_iterator CurField = E->getLambdaClass()->field_begin();
for (LambdaExpr::capture_init_iterator i = E->capture_init_begin(),
e = E->capture_init_end();
i != e; ++i, ++CurField) {
// Emit initialization
-
LValue LV = EmitLValueForFieldInitialization(SlotLV, *CurField);
- ArrayRef<VarDecl *> ArrayIndexes;
- if (CurField->getType()->isArrayType())
- ArrayIndexes = E->getCaptureInitIndexVars(i);
- EmitInitializerForField(*CurField, LV, *i, ArrayIndexes);
+ if (CurField->hasCapturedVLAType()) {
+ auto VAT = CurField->getCapturedVLAType();
+ EmitStoreThroughLValue(RValue::get(VLASizeMap[VAT->getSizeExpr()]), LV);
+ } else {
+ ArrayRef<VarDecl *> ArrayIndexes;
+ if (CurField->getType()->isArrayType())
+ ArrayIndexes = E->getCaptureInitIndexVars(i);
+ EmitInitializerForField(*CurField, LV, *i, ArrayIndexes);
+ }
}
}
CXXThisValue = EmitLoadOfLValue(ThisLValue,
SourceLocation()).getScalarVal();
}
+ for (auto *FD : MD->getParent()->fields()) {
+ if (FD->hasCapturedVLAType()) {
+ auto *ExprArg = EmitLoadOfLValue(EmitLValueForLambdaField(FD),
+ SourceLocation()).getScalarVal();
+ auto VAT = FD->getCapturedVLAType();
+ VLASizeMap[VAT->getSizeExpr()] = ExprArg;
+ }
+ }
} else {
// Not in a lambda; just use 'this' from the method.
// FIXME: Should we generate a new load for each use of 'this'? The
#include "clang/Sema/ScopeInfo.h"
#include "clang/AST/Decl.h"
+#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
return BaseInfoTy(D, IsExact);
}
+bool CapturingScopeInfo::isVLATypeCaptured(const VariableArrayType *VAT) const {
+ if (auto *LSI = dyn_cast<LambdaScopeInfo>(this))
+ for (auto *FD : LSI->Lambda->fields()) {
+ if (FD->hasCapturedVLAType() && FD->getCapturedVLAType() == VAT)
+ return true;
+ }
+ return false;
+}
+
FunctionScopeInfo::WeakObjectProfileTy::WeakObjectProfileTy(
const ObjCPropertyRefExpr *PropE)
: Base(nullptr, true), Property(getBestPropertyDecl(PropE)) {
// Add the captures to the LSI so they can be noted as already
// captured within tryCaptureVar.
+ auto I = LambdaClass->field_begin();
for (const auto &C : LambdaClass->captures()) {
if (C.capturesVariable()) {
VarDecl *VD = C.getCapturedVar();
} else if (C.capturesThis()) {
LSI->addThisCapture(/*Nested*/ false, C.getLocation(),
S.getCurrentThisType(), /*Expr*/ nullptr);
+ } else {
+ LSI->addVLATypeCapture(C.getLocation(), I->getType());
}
+ ++I;
}
}
return false;
}
- // Prohibit variably-modified types; they're difficult to deal with.
- if (Var->getType()->isVariablyModifiedType() && (IsBlock || IsLambda)) {
+ // Prohibit variably-modified types in blocks; they're difficult to deal with.
+ if (Var->getType()->isVariablyModifiedType() && IsBlock) {
if (Diagnose) {
- if (IsBlock)
- S.Diag(Loc, diag::err_ref_vm_type);
- else
- S.Diag(Loc, diag::err_lambda_capture_vm_type) << Var->getDeclName();
+ S.Diag(Loc, diag::err_ref_vm_type);
S.Diag(Var->getLocation(), diag::note_previous_decl)
<< Var->getDeclName();
}
return true;
}
-
bool Sema::tryCaptureVariable(VarDecl *Var, SourceLocation ExprLoc,
TryCaptureKind Kind, SourceLocation EllipsisLoc,
bool BuildAndDiagnose,
break;
case Type::VariableArray: {
// Losing element qualification here is fine.
- const VariableArrayType *Vat = cast<VariableArrayType>(Ty);
+ const VariableArrayType *VAT = cast<VariableArrayType>(Ty);
// Unknown size indication requires no size computation.
// Otherwise, evaluate and record it.
- if (Expr *Size = Vat->getSizeExpr()) {
- MarkDeclarationsReferencedInExpr(Size);
+ if (auto Size = VAT->getSizeExpr()) {
+ if (auto LSI = dyn_cast<LambdaScopeInfo>(CSI)) {
+ if (!LSI->isVLATypeCaptured(VAT)) {
+ auto ExprLoc = Size->getExprLoc();
+ auto SizeType = Context.getSizeType();
+ auto Lambda = LSI->Lambda;
+
+ // Build the non-static data member.
+ auto Field = FieldDecl::Create(
+ Context, Lambda, ExprLoc, ExprLoc,
+ /*Id*/ nullptr, SizeType, /*TInfo*/ nullptr,
+ /*BW*/ nullptr, /*Mutable*/ false,
+ /*InitStyle*/ ICIS_NoInit);
+ Field->setImplicit(true);
+ Field->setAccess(AS_private);
+ Field->setCapturedVLAType(VAT);
+ Lambda->addDecl(Field);
+
+ LSI->addVLATypeCapture(ExprLoc, SizeType);
+ }
+ } else {
+ // Immediately mark all referenced vars for CapturedStatements,
+ // they all are captured by reference.
+ MarkDeclarationsReferencedInExpr(Size);
+ }
}
- QTy = Vat->getElementType();
+ QTy = VAT->getElementType();
break;
}
case Type::FunctionProto:
/*isImplicit=*/true));
continue;
}
+ if (From.isVLATypeCapture()) {
+ Captures.push_back(
+ LambdaCapture(From.getLocation(), IsImplicit, LCK_VLAType));
+ CaptureInits.push_back(nullptr);
+ continue;
+ }
VarDecl *Var = From.getVariable();
LambdaCaptureKind Kind = From.isCopyCapture()? LCK_ByCopy : LCK_ByRef;
getSema().CheckCXXThisCapture(C->getLocation(), C->isExplicit());
continue;
}
+ // Captured expression will be recaptured during captured variables
+ // rebuilding.
+ if (C->capturesVLAType())
+ continue;
// Rebuild init-captures, including the implied field declaration.
if (C->isInitCapture()) {
FD->Mutable = Record[Idx++];
if (int BitWidthOrInitializer = Record[Idx++]) {
FD->InitializerOrBitWidth.setInt(BitWidthOrInitializer - 1);
- FD->InitializerOrBitWidth.setPointer(Reader.ReadExpr(F));
+ if (FD->getDeclContext()->isRecord() && FD->getParent()->isLambda()) {
+ // Read captured variable length array.
+ FD->InitializerOrBitWidth.setPointer(
+ Reader.readType(F, Record, Idx).getAsOpaquePtr());
+ } else {
+ FD->InitializerOrBitWidth.setPointer(Reader.ReadExpr(F));
+ }
}
if (!FD->getDeclName()) {
if (FieldDecl *Tmpl = ReadDeclAs<FieldDecl>(Record, Idx))
LambdaCaptureKind Kind = static_cast<LambdaCaptureKind>(Record[Idx++]);
switch (Kind) {
case LCK_This:
+ case LCK_VLAType:
*ToCapture++ = Capture(Loc, IsImplicit, Kind, nullptr,SourceLocation());
break;
case LCK_ByCopy:
Record.push_back(Capture.getCaptureKind());
switch (Capture.getCaptureKind()) {
case LCK_This:
+ case LCK_VLAType:
break;
case LCK_ByCopy:
case LCK_ByRef:
void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
VisitDeclaratorDecl(D);
Record.push_back(D->isMutable());
- if (D->InitializerOrBitWidth.getInt() != ICIS_NoInit ||
- D->InitializerOrBitWidth.getPointer()) {
+ if ((D->InitializerOrBitWidth.getInt() != ICIS_NoInit ||
+ D->InitializerOrBitWidth.getPointer()) &&
+ !D->hasCapturedVLAType()) {
Record.push_back(D->InitializerOrBitWidth.getInt() + 1);
- Writer.AddStmt(D->InitializerOrBitWidth.getPointer());
+ Writer.AddStmt(static_cast<Expr *>(D->InitializerOrBitWidth.getPointer()));
+ } else if (D->hasCapturedVLAType()) {
+ Record.push_back(D->InitializerOrBitWidth.getInt() + 1);
+ Writer.AddTypeRef(
+ QualType(static_cast<Type *>(D->InitializerOrBitWidth.getPointer()), 0),
+ Record);
} else {
Record.push_back(0);
}
--- /dev/null
+// RUN: %clang_cc1 %s -std=c++11 -emit-llvm -o - | FileCheck %s
+// RUN: %clang_cc1 %s -std=c++11 -emit-pch -o %t
+// RUN: %clang_cc1 %s -std=c++11 -include-pch %t -emit-llvm -o - | FileCheck %s
+
+#ifndef HEADER
+#define HEADER
+
+typedef __INTPTR_TYPE__ intptr_t;
+
+// CHECK-DAG: [[CAP_TYPE1:%.+]] = type { [[INTPTR_T:i.+]], [[INTPTR_T]]*, [[INTPTR_T]]* }
+// CHECK-DAG: [[CAP_TYPE2:%.+]] = type { [[INTPTR_T]], [[INTPTR_T]]* }
+// CHECK-DAG: [[CAP_TYPE3:%.+]] = type { [[INTPTR_T]]*, [[INTPTR_T]], [[INTPTR_T]], [[INTPTR_T]]*, [[INTPTR_T]]* }
+// CHECK-DAG: [[CAP_TYPE4:%.+]] = type { [[INTPTR_T]]*, [[INTPTR_T]], [[INTPTR_T]]*, [[INTPTR_T]], [[INTPTR_T]]* }
+
+// CHECK: define void [[G:@.+]](
+// CHECK: [[N_ADDR:%.+]] = alloca [[INTPTR_T]]
+// CHECK: store [[INTPTR_T]] %{{.+}}, [[INTPTR_T]]* [[N_ADDR]]
+// CHECK: [[N_VAL:%.+]] = load [[INTPTR_T]]* [[N_ADDR]]
+// CHECK: [[CAP_EXPR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE1]]* [[CAP_ARG:%.+]], i{{.+}} 0, i{{.+}} 0
+// CHECK: store [[INTPTR_T]] [[N_VAL]], [[INTPTR_T]]* [[CAP_EXPR_REF]]
+// CHECK: [[CAP_BUFFER_ADDR:%.+]] = getelementptr inbounds [[CAP_TYPE1]]* [[CAP_ARG]], i{{.+}} 0, i{{.+}} 1
+// CHECK: store [[INTPTR_T]]* %{{.+}}, [[INTPTR_T]]** [[CAP_BUFFER_ADDR]]
+// CHECK: [[CAP_N_REF:%.+]] = getelementptr inbounds [[CAP_TYPE1]]* [[CAP_ARG:%.+]], i{{.+}} 0, i{{.+}} 2
+// CHECK: store [[INTPTR_T]]* [[N_ADDR]], [[INTPTR_T]]** [[CAP_N_REF]]
+// CHECK: call void [[G_LAMBDA:@.+]]([[CAP_TYPE1]]* [[CAP_ARG]])
+// CHECK: ret void
+void g(intptr_t n) {
+ intptr_t buffer[n];
+ [&buffer, &n]() {
+ __typeof(buffer) x;
+ }();
+}
+
+// CHECK: void [[G_LAMBDA]]([[CAP_TYPE1]]*
+// CHECK: [[THIS:%.+]] = load [[CAP_TYPE1]]**
+// CHECK: [[N_ADDR:%.+]] = getelementptr inbounds [[CAP_TYPE1]]* [[THIS]], i{{.+}} 0, i{{.+}} 0
+// CHECK: [[N:%.+]] = load [[INTPTR_T]]* [[N_ADDR]]
+// CHECK: [[BUFFER_ADDR:%.+]] = getelementptr inbounds [[CAP_TYPE1]]* [[THIS]], i{{.+}} 0, i{{.+}} 1
+// CHECK: [[BUFFER:%.+]] = load [[INTPTR_T]]** [[BUFFER_ADDR]]
+// CHECK: call i{{.+}}* @llvm.stacksave()
+// CHECK: alloca [[INTPTR_T]], [[INTPTR_T]] [[N]]
+// CHECK: call void @llvm.stackrestore(
+// CHECK: ret void
+
+template <typename T>
+void f(T n, T m) {
+ intptr_t buffer[n + m];
+ [&buffer]() {
+ __typeof(buffer) x;
+ }();
+}
+
+template <typename T>
+intptr_t getSize(T);
+
+template <typename T>
+void b(intptr_t n, T arg) {
+ typedef intptr_t ArrTy[getSize(arg)];
+ ArrTy buffer2;
+ ArrTy buffer1[n + arg];
+ intptr_t a;
+ [&]() {
+ n = sizeof(buffer1[n]);
+ [&](){
+ n = sizeof(buffer2);
+ n = sizeof(buffer1);
+ }();
+ }();
+}
+
+// CHECK-LABEL: @main
+int main() {
+ // CHECK: call void [[G]]([[INTPTR_T]] 1)
+ g((intptr_t)1);
+ // CHECK: call void [[F_INT:@.+]]([[INTPTR_T]] 1, [[INTPTR_T]] 2)
+ f((intptr_t)1, (intptr_t)2);
+ // CHECK: call void [[B_INT:@.+]]([[INTPTR_T]] 12, [[INTPTR_T]] 13)
+ b((intptr_t)12, (intptr_t)13);
+ // CHECK: ret i32 0
+ return 0;
+}
+
+// CHECK: void [[F_INT]]([[INTPTR_T]]
+// CHECK: [[SIZE:%.+]] = add
+// CHECK: call i{{.+}}* @llvm.stacksave()
+// CHECK: [[BUFFER_ADDR:%.+]] = alloca [[INTPTR_T]], [[INTPTR_T]] [[SIZE]]
+// CHECK: [[CAP_SIZE_REF:%.+]] = getelementptr inbounds [[CAP_TYPE2]]* [[CAP_ARG:%.+]], i{{.+}} 0, i{{.+}} 0
+// CHECK: store [[INTPTR_T]] [[SIZE]], [[INTPTR_T]]* [[CAP_SIZE_REF]]
+// CHECK: [[CAP_BUFFER_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE2]]* [[CAP_ARG]], i{{.+}} 0, i{{.+}} 1
+// CHECK: store [[INTPTR_T]]* [[BUFFER_ADDR]], [[INTPTR_T]]** [[CAP_BUFFER_ADDR_REF]]
+// CHECK: call void [[F_INT_LAMBDA:@.+]]([[CAP_TYPE2]]* [[CAP_ARG]])
+// CHECK: call void @llvm.stackrestore(
+// CHECK: ret void
+// CHECK: void [[B_INT]]([[INTPTR_T]]
+// CHECK: [[N_ADDR:%.+]] = alloca [[INTPTR_T]]
+// CHECK: [[SIZE1:%.+]] = call [[INTPTR_T]]
+// CHECK: call i{{.+}}* @llvm.stacksave()
+// CHECK: [[BUFFER2_ADDR:%.+]] = alloca [[INTPTR_T]], [[INTPTR_T]] [[SIZE1]]
+// CHECK: [[SIZE2:%.+]] = add
+// CHECK: [[BUFFER1_ADDR:%.+]] = alloca [[INTPTR_T]], [[INTPTR_T]]
+// CHECK: [[CAP_N_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[CAP_ARG:%.+]], i{{.+}} 0, i{{.+}} 0
+// CHECK: store [[INTPTR_T]]* [[N_ADDR]], [[INTPTR_T]]** [[CAP_N_ADDR_REF]]
+// CHECK: [[CAP_SIZE2_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[CAP_ARG]], i{{.+}} 0, i{{.+}} 1
+// CHECK: store i{{[0-9]+}} [[SIZE2]], i{{[0-9]+}}* [[CAP_SIZE2_REF]]
+// CHECK: [[CAP_SIZE1_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[CAP_ARG]], i{{.+}} 0, i{{.+}} 2
+// CHECK: store i{{[0-9]+}} [[SIZE1]], i{{[0-9]+}}* [[CAP_SIZE1_REF]]
+// CHECK: [[CAP_BUFFER1_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[CAP_ARG]], i{{.+}} 0, i{{.+}} 3
+// CHECK: store [[INTPTR_T]]* [[BUFFER1_ADDR]], [[INTPTR_T]]** [[CAP_BUFFER1_ADDR_REF]]
+// CHECK: [[CAP_BUFFER2_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[CAP_ARG]], i{{.+}} 0, i{{.+}} 4
+// CHECK: store [[INTPTR_T]]* [[BUFFER2_ADDR]], [[INTPTR_T]]** [[CAP_BUFFER2_ADDR_REF]]
+// CHECK: call void [[B_INT_LAMBDA:@.+]]([[CAP_TYPE3]]* [[CAP_ARG]])
+// CHECK: call void @llvm.stackrestore(
+// CHECK: ret void
+
+// CHECK: define {{.*}} void [[B_INT_LAMBDA]]([[CAP_TYPE3]]*
+// CHECK: [[SIZE2_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS:%.+]], i{{[0-9]+}} 0, i{{[0-9]+}} 1
+// CHECK: [[SIZE2:%.+]] = load i{{[0-9]+}}* [[SIZE2_REF]]
+// CHECK: [[SIZE1_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 2
+// CHECK: [[SIZE1:%.+]] = load i{{[0-9]+}}* [[SIZE1_REF]]
+// CHECK: [[N_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
+// CHECK: [[N_ADDR:%.+]] = load [[INTPTR_T]]** [[N_ADDR_REF]]
+// CHECK: [[N:%.+]] = load [[INTPTR_T]]* [[N_ADDR]]
+// CHECK: [[BUFFER1_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 3
+// CHECK: [[BUFFER1_ADDR:%.+]] = load [[INTPTR_T]]** [[BUFFER1_ADDR_REF]]
+// CHECK: [[ELEM_OFFSET:%.+]] = mul {{.*}} i{{[0-9]+}} [[N]], [[SIZE1]]
+// CHECK: [[ELEM_ADDR:%.+]] = getelementptr inbounds [[INTPTR_T]]* [[BUFFER1_ADDR]], i{{[0-9]+}} [[ELEM_OFFSET]]
+// CHECK: [[SIZEOF:%.+]] = mul {{.*}} i{{[0-9]+}} {{[0-9]+}}, [[SIZE1]]
+// CHECK: [[N_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
+// CHECK: [[N_ADDR:%.+]] = load [[INTPTR_T]]** [[N_ADDR_REF]]
+// CHECK: store [[INTPTR_T]] {{%.+}}, [[INTPTR_T]]* [[N_ADDR]]
+// CHECK: [[N_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[CAP:%.+]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
+// CHECK: [[N_ADDR_REF_ORIG:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 0
+// CHECK: [[N_ADDR_ORIG:%.+]] = load [[INTPTR_T]]** [[N_ADDR_REF_ORIG]]
+// CHECK: store [[INTPTR_T]]* [[N_ADDR_ORIG]], [[INTPTR_T]]** [[N_ADDR_REF]]
+// CHECK: [[SIZE1_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[CAP]], i{{[0-9]+}} 0, i{{[0-9]+}} 1
+// CHECK: store i{{[0-9]+}} [[SIZE1]], i{{[0-9]+}}* [[SIZE1_REF]]
+// CHECK: [[BUFFER2_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[CAP]], i{{[0-9]+}} 0, i{{[0-9]+}} 2
+// CHECK: [[BUFFER2_ADDR_REF_ORIG:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 4
+// CHECK: [[BUFFER2_ADDR_ORIG:%.+]] = load [[INTPTR_T]]** [[BUFFER2_ADDR_REF_ORIG]]
+// CHECK: store [[INTPTR_T]]* [[BUFFER2_ADDR_ORIG]], [[INTPTR_T]]** [[BUFFER2_ADDR_REF]]
+// CHECK: [[SIZE2_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[CAP]], i{{[0-9]+}} 0, i{{[0-9]+}} 3
+// CHECK: store i{{[0-9]+}} [[SIZE2]], i{{[0-9]+}}* [[SIZE2_REF]]
+// CHECK: [[BUFFER1_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[CAP]], i{{[0-9]+}} 0, i{{[0-9]+}} 4
+// CHECK: [[BUFFER1_ADDR_REF_ORIG:%.+]] = getelementptr inbounds [[CAP_TYPE3]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 3
+// CHECK: [[BUFFER1_ADDR_ORIG:%.+]] = load [[INTPTR_T]]** [[BUFFER1_ADDR_REF_ORIG]]
+// CHECK: store [[INTPTR_T]]* [[BUFFER1_ADDR_ORIG]], [[INTPTR_T]]** [[BUFFER1_ADDR_REF]]
+// CHECK: call void [[B_INT_LAMBDA_LAMBDA:@.+]]([[CAP_TYPE4]]* [[CAP]])
+// CHECK: ret void
+
+// CHECK: define {{.*}} void [[B_INT_LAMBDA_LAMBDA]]([[CAP_TYPE4]]*
+// CHECK: [[SIZE1_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[THIS:%.+]], i{{[0-9]+}} 0, i{{[0-9]+}} 1
+// CHECK: [[SIZE1:%.+]] = load i{{[0-9]+}}* [[SIZE1_REF]]
+// CHECK: [[SIZE2_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 3
+// CHECK: [[SIZE2:%.+]] = load i{{[0-9]+}}* [[SIZE2_REF]]
+// CHECK: [[BUFFER2_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 2
+// CHECK: [[BUFFER2_ADDR:%.+]] = load [[INTPTR_T]]** [[BUFFER2_ADDR_REF]]
+// CHECK: [[SIZEOF_BUFFER2:%.+]] = mul {{.*}} i{{[0-9]+}} {{[0-9]+}}, [[SIZE1]]
+// CHECK: [[BUFFER1_ADDR_REF:%.+]] = getelementptr inbounds [[CAP_TYPE4]]* [[THIS]], i{{[0-9]+}} 0, i{{[0-9]+}} 4
+// CHECK: [[BUFFER1_ADDR:%.+]] = load [[INTPTR_T]]** [[BUFFER1_ADDR_REF]]
+// CHECK: [[MUL:%.+]] = mul {{.*}} i{{[0-9]+}} [[SIZE2]], [[SIZE1]]
+// CHECK: mul {{.*}} i{{[0-9]+}} {{[0-9]+}}, [[MUL]]
+// CHECK: ret void
+
+// CHECK: void [[F_INT_LAMBDA]]([[CAP_TYPE2]]*
+// CHECK: [[THIS:%.+]] = load [[CAP_TYPE2]]**
+// CHECK: [[SIZE_REF:%.+]] = getelementptr inbounds [[CAP_TYPE2]]* [[THIS]], i{{.+}} 0, i{{.+}} 0
+// CHECK: [[SIZE:%.+]] = load [[INTPTR_T]]* [[SIZE_REF]]
+// CHECK: call i{{.+}}* @llvm.stacksave()
+// CHECK: alloca [[INTPTR_T]], [[INTPTR_T]] [[SIZE]]
+// CHECK: call void @llvm.stackrestore(
+// CHECK: ret void
+#endif
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
+// expected-no-diagnostics
// Make sure we correctly treat __typeof as potentially-evaluated when appropriate
template<typename T> void f(T n) {
- int buffer[n]; // expected-note {{declared here}}
- [] { __typeof(buffer) x; }(); // expected-error {{variable 'buffer' with variably modified type cannot be captured in a lambda expression}}
+ int buffer[n];
+ [&buffer] { __typeof(buffer) x; }();
}
int main() {
- f<int>(1); // expected-note {{in instantiation}}
+ f<int>(1);
}
}
bool TraverseLambdaCapture(LambdaExpr *LE, const LambdaCapture *C) {
- if (C->capturesThis())
+ if (C->capturesThis() || C->capturesVLAType())
return true;
if (C->capturesVariable() && IndexCtx.shouldIndexFunctionLocalSymbols())
projects / clang / commitdiff