IRGen: Add more tests for dll attributes

llvm-svn: 209596

1 files changed, 112 insertions, 5 deletions

diff --git a/clang/test/CodeGen/dllexport.c b/clang/test/CodeGen/dllexport.c
index 10f8546bcc3..43899949437 100644
--- a/clang/test/CodeGen/dllexport.c
+++ b/clang/test/CodeGen/dllexport.c
@@ -1,8 +1,115 @@
-// RUN: %clang_cc1 -triple i686-pc-win32 -std=c99 -emit-llvm < %s | FileCheck %s
+// RUN: %clang_cc1 -triple i686-windows-msvc   -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple i686-windows-gnu    -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-windows-gnu  -emit-llvm -std=c11 -O0 -o - %s | FileCheck %s
 
-#define DLLEXPORT __declspec(dllexport)
 
-inline void DLLEXPORT f() {}
-extern void DLLEXPORT f();
 
-// CHECK: define weak_odr dllexport void @f()
+//===----------------------------------------------------------------------===//
+// Globals
+//===----------------------------------------------------------------------===//
+
+// Declarations are not exported.
+// CHECK-NOT: @ExternGlobalDecl
+__declspec(dllexport) extern int ExternGlobalDecl;
+
+// dllexport implies a definition.
+// CHECK-DAG: @GlobalDef = common dllexport global i32 0, align 4
+__declspec(dllexport) int GlobalDef;
+
+// Export definition.
+// CHECK-DAG: @GlobalInit = dllexport global i32 1, align 4
+__declspec(dllexport) int GlobalInit = 1;
+
+// Declare, then export definition.
+// CHECK-DAG: @GlobalDeclInit = dllexport global i32 1, align 4
+__declspec(dllexport) extern int GlobalDeclInit;
+int GlobalDeclInit = 1;
+
+// Redeclarations
+// CHECK-DAG: @GlobalRedecl1 = common dllexport global i32 0, align 4
+__declspec(dllexport) extern int GlobalRedecl1;
+__declspec(dllexport)        int GlobalRedecl1;
+
+// CHECK-DAG: @GlobalRedecl2 = common dllexport global i32 0, align 4
+__declspec(dllexport) extern int GlobalRedecl2;
+                             int GlobalRedecl2;
+
+
+
+//===----------------------------------------------------------------------===//
+// Functions
+//===----------------------------------------------------------------------===//
+
+// Declarations are not exported.
+
+// Export function definition.
+// CHECK-DAG: define dllexport void @def()
+__declspec(dllexport) void def(void) {}
+
+// Export inline function.
+// CHECK-DAG: define weak_odr dllexport void @inlineFunc()
+// CHECK-DAG: define weak_odr dllexport void @externInlineFunc()
+__declspec(dllexport) inline void inlineFunc(void) {}
+__declspec(dllexport) inline void externInlineFunc(void) {}
+extern void externInlineFunc(void);
+
+// Redeclarations
+// CHECK-DAG: define dllexport void @redecl1()
+__declspec(dllexport) void redecl1(void);
+__declspec(dllexport) void redecl1(void) {}
+
+// CHECK-DAG: define dllexport void @redecl2()
+__declspec(dllexport) void redecl2(void);
+                      void redecl2(void) {}
+
+
+
+//===----------------------------------------------------------------------===//
+// Precedence
+//===----------------------------------------------------------------------===//
+
+// dllexport takes precedence over the dllimport if both are specified.
+// CHECK-DAG: @PrecedenceGlobal1A = common dllexport global i32 0, align 4
+// CHECK-DAG: @PrecedenceGlobal1B = common dllexport global i32 0, align 4
+__attribute__((dllimport, dllexport))       int PrecedenceGlobal1A;
+__declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B;
+
+// CHECK-DAG: @PrecedenceGlobal2A = common dllexport global i32 0, align 4
+// CHECK-DAG: @PrecedenceGlobal2B = common dllexport global i32 0, align 4
+__attribute__((dllexport, dllimport))       int PrecedenceGlobal2A;
+__declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B;
+
+// CHECK-DAG: @PrecedenceGlobalRedecl1 = dllexport global i32 0, align 4
+__declspec(dllexport) extern int PrecedenceGlobalRedecl1;
+__declspec(dllimport)        int PrecedenceGlobalRedecl1 = 0;
+
+// CHECK-DAG: @PrecedenceGlobalRedecl2 = common dllexport global i32 0, align 4
+__declspec(dllimport) extern int PrecedenceGlobalRedecl2;
+__declspec(dllexport)        int PrecedenceGlobalRedecl2;
+
+// CHECK-DAG: @PrecedenceGlobalMixed1 = dllexport global i32 1, align 4
+__attribute__((dllexport)) extern int PrecedenceGlobalMixed1;
+__declspec(dllimport)             int PrecedenceGlobalMixed1 = 1;
+
+// CHECK-DAG: @PrecedenceGlobalMixed2 = common dllexport global i32 0, align 4
+__attribute__((dllimport)) extern int PrecedenceGlobalMixed2;
+__declspec(dllexport)             int PrecedenceGlobalMixed2;
+
+// CHECK-DAG: define dllexport void @precedence1A()
+// CHECK-DAG: define dllexport void @precedence1B()
+void __attribute__((dllimport, dllexport))       precedence1A(void) {}
+void __declspec(dllimport) __declspec(dllexport) precedence1B(void) {}
+
+// CHECK-DAG: define dllexport void @precedence2A()
+// CHECK-DAG: define dllexport void @precedence2B()
+void __attribute__((dllexport, dllimport))       precedence2A(void) {}
+void __declspec(dllexport) __declspec(dllimport) precedence2B(void) {}
+
+// CHECK-DAG: define dllexport void @precedenceRedecl1()
+void __declspec(dllimport) precedenceRedecl1(void);
+void __declspec(dllexport) precedenceRedecl1(void) {}
+
+// CHECK-DAG: define dllexport void @precedenceRedecl2()
+void __declspec(dllexport) precedenceRedecl2(void);
+void __declspec(dllimport) precedenceRedecl2(void) {}