1 // RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s 2 // RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s 3 // RUN: %clang_cc1 -triple i686-windows-gnu -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s 4 // RUN: %clang_cc1 -triple x86_64-windows-gnu -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s 5 // RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -std=c11 -O1 -o - %s | FileCheck --check-prefix=O1 %s 6 // RUN: %clang_cc1 -triple i686-windows-gnu -emit-llvm -std=c11 -O1 -o - %s | FileCheck --check-prefix=O1 %s 7 8 #define JOIN2(x, y) x##y 9 #define JOIN(x, y) JOIN2(x, y) 10 #define USEVAR(var) int JOIN(use, __LINE__)() { return var; } 11 #define USE(func) void JOIN(use, __LINE__)() { func(); } 12 13 14 15 //===----------------------------------------------------------------------===// 16 // Globals 17 //===----------------------------------------------------------------------===// 18 19 // Import declaration. 20 // CHECK: @ExternGlobalDecl = external dllimport global i32 21 __declspec(dllimport) extern int ExternGlobalDecl; 22 USEVAR(ExternGlobalDecl) 23 24 // dllimport implies a declaration. 25 // CHECK: @GlobalDecl = external dllimport global i32 26 __declspec(dllimport) int GlobalDecl; 27 USEVAR(GlobalDecl) 28 29 // Redeclarations 30 // CHECK: @GlobalRedecl1 = external dllimport global i32 31 __declspec(dllimport) extern int GlobalRedecl1; 32 __declspec(dllimport) extern int GlobalRedecl1; 33 USEVAR(GlobalRedecl1) 34 35 // CHECK: @GlobalRedecl2 = external dllimport global i32 36 __declspec(dllimport) int GlobalRedecl2; 37 __declspec(dllimport) int GlobalRedecl2; 38 USEVAR(GlobalRedecl2) 39 40 // NB: MSVC issues a warning and makes GlobalRedecl3 dllexport. We follow GCC 41 // and drop the dllimport with a warning. 42 // CHECK: @GlobalRedecl3 = external global i32 43 __declspec(dllimport) extern int GlobalRedecl3; 44 extern int GlobalRedecl3; // dllimport ignored 45 USEVAR(GlobalRedecl3) 46 47 48 49 //===----------------------------------------------------------------------===// 50 // Functions 51 //===----------------------------------------------------------------------===// 52 53 // Import function declaration. 54 // CHECK-DAG: declare dllimport void @decl() 55 __declspec(dllimport) void decl(void); 56 57 // Initialize use_decl with the address of the thunk. 58 // CHECK-DAG: @use_decl = global void ()* @decl 59 void (*use_decl)(void) = &decl; 60 61 // Import inline function. 62 // CHECK-DAG: declare dllimport void @inlineFunc() 63 // O1-DAG: define available_externally dllimport void @inlineFunc() 64 __declspec(dllimport) inline void inlineFunc(void) {} 65 USE(inlineFunc) 66 67 // inline attributes 68 // CHECK-DAG: declare dllimport void @noinline() 69 // O1-DAG: define available_externally dllimport void @noinline() 70 // CHECK-NOT: @alwaysInline() 71 // O1-NOT: @alwaysInline() 72 __declspec(dllimport) __attribute__((noinline)) inline void noinline(void) {} 73 __declspec(dllimport) __attribute__((always_inline)) inline void alwaysInline(void) {} 74 USE(noinline) 75 USE(alwaysInline) 76 77 // Redeclarations 78 // CHECK-DAG: declare dllimport void @redecl1() 79 __declspec(dllimport) void redecl1(void); 80 __declspec(dllimport) void redecl1(void); 81 USE(redecl1) 82 83 // NB: MSVC issues a warning and makes redecl2/redecl3 dllexport. We follow GCC 84 // and drop the dllimport with a warning. 85 // CHECK-DAG: declare void @redecl2() 86 __declspec(dllimport) void redecl2(void); 87 void redecl2(void); 88 USE(redecl2) 89 90 // CHECK-DAG: define void @redecl3() 91 __declspec(dllimport) void redecl3(void); 92 void redecl3(void) {} // dllimport ignored 93 USE(redecl3) 94
