CodeGen: tweak CFString emission for COFF targets
The `isa' member was previously not given the correct DLL Storage. Ensure that we give the `isa' constant `__CFConstantStringClassReference' the correct DLL storage. Default to dllimport unless an explicit specification gives it a dllexport storage. llvm-svn: 271361
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@ -3099,6 +3099,27 @@ CodeGenModule::GetAddrOfConstantCFString(const StringLiteral *Literal) {
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Ty = llvm::ArrayType::get(Ty, 0);
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llvm::Constant *GV =
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CreateRuntimeVariable(Ty, "__CFConstantStringClassReference");
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if (getTarget().getTriple().isOSBinFormatCOFF()) {
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IdentifierInfo &II = getContext().Idents.get(GV->getName());
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TranslationUnitDecl *TUDecl = getContext().getTranslationUnitDecl();
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DeclContext *DC = TranslationUnitDecl::castToDeclContext(TUDecl);
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llvm::GlobalValue *CGV = cast<llvm::GlobalValue>(GV);
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const VarDecl *VD = nullptr;
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for (const auto &Result : DC->lookup(&II))
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if ((VD = dyn_cast<VarDecl>(Result)))
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break;
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if (!VD || !VD->hasAttr<DLLExportAttr>()) {
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CGV->setDLLStorageClass(llvm::GlobalValue::DLLImportStorageClass);
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CGV->setLinkage(llvm::GlobalValue::ExternalLinkage);
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} else {
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CGV->setDLLStorageClass(llvm::GlobalValue::DLLExportStorageClass);
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CGV->setLinkage(llvm::GlobalValue::ExternalLinkage);
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}
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}
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// Decay array -> ptr
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V = llvm::ConstantExpr::getGetElementPtr(Ty, GV, Zeros);
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CFConstantStringClassRef = V;
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@ -0,0 +1,40 @@
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// RUN: %clang_cc1 -triple thumbv7-windows -fdeclspec -DCF_BUILDING_CF -DDECL -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-IN-CF-DECL
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// RUN: %clang_cc1 -triple thumbv7-windows -fdeclspec -DCF_BUILDING_CF -DDEFN -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-IN-CF-DEFN
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// RUN: %clang_cc1 -triple thumbv7-windows -fdeclspec -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF
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// RUN: %clang_cc1 -triple thumbv7-windows -fdeclspec -DEXTERN -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-EXTERN
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// RUN: %clang_cc1 -triple thumbv7-windows -fdeclspec -DEXTERN_DLLIMPORT -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-EXTERN-DLLIMPORT
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// RUN: %clang_cc1 -triple thumbv7-windows -fdeclspec -DDLLIMPORT -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-DLLIMPORT
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// RUN: %clang_cc1 -Os -triple thumbv7-windows -fdeclspec -DCF_BUILDING_CF -DDECL -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-IN-CF-DECL
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// RUN: %clang_cc1 -Os -triple thumbv7-windows -fdeclspec -DCF_BUILDING_CF -DDEFN -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-IN-CF-DEFN
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// RUN: %clang_cc1 -Os -triple thumbv7-windows -fdeclspec -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF
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// RUN: %clang_cc1 -Os -triple thumbv7-windows -fdeclspec -DEXTERN -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-EXTERN
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// RUN: %clang_cc1 -Os -triple thumbv7-windows -fdeclspec -DEXTERN_DLLIMPORT -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-EXTERN-DLLIMPORT
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// RUN: %clang_cc1 -Os -triple thumbv7-windows -fdeclspec -DDLLIMPORT -S -emit-llvm %s -o - | FileCheck %s -check-prefix CHECK-CF-DLLIMPORT
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#if defined(CF_BUILDING_CF)
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#if defined(DECL)
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extern __declspec(dllexport) long __CFConstantStringClassReference[];
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#elif defined(DEFN)
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__declspec(dllexport) long __CFConstantStringClassReference[32];
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#endif
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#else
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#if defined(EXTERN)
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extern long __CFConstantStringClassReference[];
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#elif defined(EXTERN_DLLIMPORT)
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extern __declspec(dllimport) long __CFConstantStringClassReference[];
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#elif defined(DLLIMPORT)
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__declspec(dllimport) long __CFConstantStringClassReference[];
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#endif
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#endif
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typedef struct __CFString *CFStringRef;
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const CFStringRef string = (CFStringRef)__builtin___CFStringMakeConstantString("string");
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// CHECK-CF-IN-CF-DECL: @__CFConstantStringClassReference = external dllexport global [0 x i32]
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// CHECK-CF-IN-CF-DEFN: @__CFConstantStringClassReference = common dllexport global [32 x i32]
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// CHECK-CF: @__CFConstantStringClassReference = external dllimport global [0 x i32]
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// CHECK-CF-EXTERN: @__CFConstantStringClassReference = external dllimport global [0 x i32]
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// CHECK-CF-EXTERN-DLLIMPORT: @__CFConstantStringClassReference = external dllimport global [0 x i32]
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// CHECK-CF-DLLIMPORT: @__CFConstantStringClassReference = external dllimport global [0 x i32]
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