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1// RUN: %clang_cc1 -triple i686-windows-msvc -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=MS %s2// RUN: %clang_cc1 -triple x86_64-windows-msvc -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=MS %s3// RUN: %clang_cc1 -triple i686-windows-gnu -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GNU %s4// RUN: %clang_cc1 -triple x86_64-windows-gnu -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GNU %s5// RUN: %clang_cc1 -triple i686-pc-cygwin -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GNU %s6// RUN: %clang_cc1 -triple x86_64-pc-cygwin -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GNU %s7// RUN: %clang_cc1 -triple i686-windows-msvc -fms-extensions -emit-llvm -std=c11 -O1 -fno-inline -o - %s | FileCheck --check-prefix=O1 --check-prefix=MO1 %s8// RUN: %clang_cc1 -triple i686-windows-gnu -fms-extensions -emit-llvm -std=c11 -O1 -fno-inline -o - %s | FileCheck --check-prefix=O1 --check-prefix=GO1 %s9// RUN: %clang_cc1 -triple i686-pc-cygwin -fms-extensions -emit-llvm -std=c11 -O1 -fno-inline -o - %s | FileCheck --check-prefix=O1 --check-prefix=GO1 %s10 11#define JOIN2(x, y) x##y12#define JOIN(x, y) JOIN2(x, y)13#define USEVAR(var) int JOIN(use, __LINE__)(void) { return var; }14#define USE(func) void JOIN(use, __LINE__)(void) { func(); }15 16 17 18//===----------------------------------------------------------------------===//19// Globals20//===----------------------------------------------------------------------===//21 22// Import declaration.23// CHECK: @ExternGlobalDecl = external dllimport global i3224__declspec(dllimport) extern int ExternGlobalDecl;25USEVAR(ExternGlobalDecl)26 27// dllimport implies a declaration.28// CHECK: @GlobalDecl = external dllimport global i3229__declspec(dllimport) int GlobalDecl;30USEVAR(GlobalDecl)31 32// Redeclarations33// CHECK: @GlobalRedecl1 = external dllimport global i3234__declspec(dllimport) extern int GlobalRedecl1;35__declspec(dllimport) extern int GlobalRedecl1;36USEVAR(GlobalRedecl1)37 38// CHECK: @GlobalRedecl2 = external dllimport global i3239__declspec(dllimport) int GlobalRedecl2;40__declspec(dllimport) int GlobalRedecl2;41USEVAR(GlobalRedecl2)42 43// NB: MSVC issues a warning and makes GlobalRedecl3 dllexport. We follow GCC44// and drop the dllimport with a warning.45// MS: @GlobalRedecl3 = external dso_local global i3246// GNU: @GlobalRedecl3 = external global i3247__declspec(dllimport) extern int GlobalRedecl3;48 extern int GlobalRedecl3; // dllimport ignored49USEVAR(GlobalRedecl3)50 51// Make sure this works even if the decl has been used before it's defined (PR20792).52// MS: @GlobalRedecl4 = dso_local dllexport global i3253// GNU: @GlobalRedecl4 = dso_local global i3254__declspec(dllimport) extern int GlobalRedecl4;55USEVAR(GlobalRedecl4)56 int GlobalRedecl4; // dllimport ignored57 58// FIXME: dllimport is dropped in the AST; this should be reflected in codegen (PR02803).59// CHECK: @GlobalRedecl5 = external dllimport global i3260__declspec(dllimport) extern int GlobalRedecl5;61USEVAR(GlobalRedecl5)62 extern int GlobalRedecl5; // dllimport ignored63 64// Redeclaration in local context.65// CHECK: @GlobalRedecl6 = external dllimport global i3266__declspec(dllimport) int GlobalRedecl6;67int functionScope(void) {68 extern int GlobalRedecl6; // still dllimport69 return GlobalRedecl6;70}71 72 73 74//===----------------------------------------------------------------------===//75// Functions76//===----------------------------------------------------------------------===//77 78// Import function declaration.79// CHECK-DAG: declare dllimport void @decl()80__declspec(dllimport) void decl(void);81 82// Initialize use_decl with the address of the thunk.83// CHECK-DAG: @use_decl = dso_local global ptr @decl84void (*use_decl)(void) = &decl;85 86// Import inline function.87// MS-DAG: declare dllimport void @inlineFunc()88// MO1-DAG: declare dllimport void @inlineFunc()89// GNU-DAG: declare dso_local void @inlineFunc()90// GO1-DAG: declare dso_local void @inlineFunc()91__declspec(dllimport) inline void inlineFunc(void) {}92USE(inlineFunc)93 94// inline attributes95// MS-DAG: declare dllimport void @noinline()96// MO1-DAG: declare dllimport void @noinline()97// GNU-DAG: declare dso_local void @noinline()98// GO1-DAG: declare dso_local void @noinline()99// CHECK-NOT: @alwaysInline()100// O1-NOT: @alwaysInline()101__declspec(dllimport) __attribute__((noinline)) inline void noinline(void) {}102__declspec(dllimport) __attribute__((always_inline)) inline void alwaysInline(void) {}103USE(noinline)104USE(alwaysInline)105 106// Redeclarations107// CHECK-DAG: declare dllimport void @redecl1()108__declspec(dllimport) void redecl1(void);109__declspec(dllimport) void redecl1(void);110USE(redecl1)111 112// NB: MSVC issues a warning and makes redecl2/redecl3 dllexport. We follow GCC113// and drop the dllimport with a warning.114// CHECK-DAG: declare dso_local void @redecl2()115__declspec(dllimport) void redecl2(void);116 void redecl2(void);117USE(redecl2)118 119// MS: define dso_local dllexport void @redecl3()120// GNU: define dso_local void @redecl3()121__declspec(dllimport) void redecl3(void);122 void redecl3(void) {} // dllimport ignored123USE(redecl3)124 125// Make sure this works even if the decl is used before it's defined (PR20792).126// MS: define dso_local dllexport void @redecl4()127// GNU: define dso_local void @redecl4()128__declspec(dllimport) void redecl4(void);129USE(redecl4)130 void redecl4(void) {} // dllimport ignored131 132// FIXME: dllimport is dropped in the AST; this should be reflected in codegen (PR20803).133// CHECK-DAG: declare dllimport134__declspec(dllimport) void redecl5(void);135USE(redecl5)136 void redecl5(void); // dllimport ignored137