clang/test/CodeGen/dllexport.c

   1 // RUN: %clang_cc1 -triple i686-windows-msvc   -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
   2 // RUN: %clang_cc1 -triple x86_64-windows-msvc -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
   3 // RUN: %clang_cc1 -triple i686-windows-gnu    -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
   4 // RUN: %clang_cc1 -triple x86_64-windows-gnu  -fms-extensions -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
   5
   6
   7
   8 //===----------------------------------------------------------------------===//
   9 // Globals
  10 //===----------------------------------------------------------------------===//
  11
  12 // Declarations are not exported.
  13 // CHECK-NOT: @ExternGlobalDecl
  14 __declspec(dllexport) extern int ExternGlobalDecl;
  15
  16 // dllexport implies a definition.
  17 // CHECK-DAG: @GlobalDef = dso_local dllexport global i32 0, align 4
  18 __declspec(dllexport) int GlobalDef;
  19
  20 // Export definition.
  21 // CHECK-DAG: @GlobalInit = dso_local dllexport global i32 1, align 4
  22 __declspec(dllexport) int GlobalInit = 1;
  23
  24 // Declare, then export definition.
  25 // CHECK-DAG: @GlobalDeclInit = dso_local dllexport global i32 1, align 4
  26 __declspec(dllexport) extern int GlobalDeclInit;
  27 int GlobalDeclInit = 1;
  28
  29 // Redeclarations
  30 // CHECK-DAG: @GlobalRedecl1 = dso_local dllexport global i32 0, align 4
  31 __declspec(dllexport) extern int GlobalRedecl1;
  32 __declspec(dllexport)        int GlobalRedecl1;
  33
  34 // CHECK-DAG: @GlobalRedecl2 = dso_local dllexport global i32 0, align 4
  35 __declspec(dllexport) extern int GlobalRedecl2;
  36                              int GlobalRedecl2;
  37
  38
  39
  40 //===----------------------------------------------------------------------===//
  41 // Functions
  42 //===----------------------------------------------------------------------===//
  43
  44 // Declarations are not exported.
  45
  46 // Export function definition.
  47 // CHECK-DAG: define dso_local dllexport void @def()
  48 __declspec(dllexport) void def(void) {}
  49
  50 // Export inline function.
  51 // CHECK-DAG: define weak_odr dso_local dllexport void @inlineFunc()
  52 // CHECK-DAG: define weak_odr dso_local dllexport void @externInlineFunc()
  53 __declspec(dllexport) inline void inlineFunc(void) {}
  54 __declspec(dllexport) inline void externInlineFunc(void) {}
  55 extern void externInlineFunc(void);
  56
  57 // Redeclarations
  58 // CHECK-DAG: define dso_local dllexport void @redecl1()
  59 __declspec(dllexport) void redecl1(void);
  60 __declspec(dllexport) void redecl1(void) {}
  61
  62 // CHECK-DAG: define dso_local dllexport void @redecl2()
  63 __declspec(dllexport) void redecl2(void);
  64                       void redecl2(void) {}
  65
  66
  67
  68 //===----------------------------------------------------------------------===//
  69 // Precedence
  70 //===----------------------------------------------------------------------===//
  71
  72 // dllexport takes precedence over the dllimport if both are specified.
  73 // CHECK-DAG: @PrecedenceGlobal1A = dso_local dllexport global i32 0, align 4
  74 // CHECK-DAG: @PrecedenceGlobal1B = dso_local dllexport global i32 0, align 4
  75 __attribute__((dllimport, dllexport))       int PrecedenceGlobal1A;
  76 __declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B;
  77
  78 // CHECK-DAG: @PrecedenceGlobal2A = dso_local dllexport global i32 0, align 4
  79 // CHECK-DAG: @PrecedenceGlobal2B = dso_local dllexport global i32 0, align 4
  80 __attribute__((dllexport, dllimport))       int PrecedenceGlobal2A;
  81 __declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B;
  82
  83 // CHECK-DAG: @PrecedenceGlobalRedecl1 = dso_local dllexport global i32 0, align 4
  84 __declspec(dllexport) extern int PrecedenceGlobalRedecl1;
  85 __declspec(dllimport)        int PrecedenceGlobalRedecl1 = 0;
  86
  87 // CHECK-DAG: @PrecedenceGlobalRedecl2 = dso_local dllexport global i32 0, align 4
  88 __declspec(dllimport) extern int PrecedenceGlobalRedecl2;
  89 __declspec(dllexport)        int PrecedenceGlobalRedecl2;
  90
  91 // CHECK-DAG: @PrecedenceGlobalMixed1 = dso_local dllexport global i32 1, align 4
  92 __attribute__((dllexport)) extern int PrecedenceGlobalMixed1;
  93 __declspec(dllimport)             int PrecedenceGlobalMixed1 = 1;
  94
  95 // CHECK-DAG: @PrecedenceGlobalMixed2 = dso_local dllexport global i32 0, align 4
  96 __attribute__((dllimport)) extern int PrecedenceGlobalMixed2;
  97 __declspec(dllexport)             int PrecedenceGlobalMixed2;
  98
  99 // CHECK-DAG: define dso_local dllexport void @precedence1A()
 100 // CHECK-DAG: define dso_local dllexport void @precedence1B()
 101 void __attribute__((dllimport, dllexport))       precedence1A(void) {}
 102 void __declspec(dllimport) __declspec(dllexport) precedence1B(void) {}
 103
 104 // CHECK-DAG: define dso_local dllexport void @precedence2A()
 105 // CHECK-DAG: define dso_local dllexport void @precedence2B()
 106 void __attribute__((dllexport, dllimport))       precedence2A(void) {}
 107 void __declspec(dllexport) __declspec(dllimport) precedence2B(void) {}
 108
 109 // CHECK-DAG: define dso_local dllexport void @precedenceRedecl1()
 110 void __declspec(dllimport) precedenceRedecl1(void);
 111 void __declspec(dllexport) precedenceRedecl1(void) {}
 112
 113 // CHECK-DAG: define dso_local dllexport void @precedenceRedecl2()
 114 void __declspec(dllexport) precedenceRedecl2(void);
 115 void __declspec(dllimport) precedenceRedecl2(void) {}