1 // Build PCH without object file, then use it.
2 // RUN: %clang_cc1 -triple i686-pc-win32 -fms-extensions -emit-pch -o %t %s
3 // RUN: %clang_cc1 -triple i686-pc-win32 -fms-extensions -emit-obj -emit-llvm -include-pch %t -o - %s | FileCheck -check-prefix=PCH %s
4 
5 // Build PCH with object file, then use it.
6 // RUN: %clang_cc1 -triple i686-pc-win32 -fms-extensions -emit-pch -building-pch-with-obj -o %t %s
7 // RUN: %clang_cc1 -triple i686-pc-win32 -fms-extensions -emit-obj -emit-llvm -include-pch %t -building-pch-with-obj -o - %s | FileCheck -check-prefix=OBJ %s
8 // RUN: %clang_cc1 -triple i686-pc-win32 -fms-extensions -emit-obj -emit-llvm -include-pch %t -o - %s | FileCheck -check-prefix=PCHWITHOBJ %s
9 
10 // Check for vars separately to avoid having to reorder the check statements.
11 // RUN: %clang_cc1 -triple i686-pc-win32 -fms-extensions -emit-obj -emit-llvm -include-pch %t -o - %s | FileCheck -check-prefix=PCHWITHOBJVARS %s
12 
13 #ifndef IN_HEADER
14 #define IN_HEADER
15 
16 inline void __declspec(dllexport) foo() {}
17 // OBJ: define weak_odr dso_local dllexport void @"?foo@@YAXXZ"
18 // PCH: define weak_odr dso_local dllexport void @"?foo@@YAXXZ"
19 // PCHWITHOBJ-NOT: define {{.*}}foo
20 
21 
22 // This function is referenced, so gets emitted as usual.
23 inline void __declspec(dllexport) baz() {}
24 // OBJ: define weak_odr dso_local dllexport void @"?baz@@YAXXZ"
25 // PCH: define weak_odr dso_local dllexport void @"?baz@@YAXXZ"
26 // PCHWITHOBJ: define weak_odr dso_local dllexport void @"?baz@@YAXXZ"
27 
28 
29 struct __declspec(dllexport) S {
30   void bar() {}
31 // OBJ: define weak_odr dso_local dllexport x86_thiscallcc void @"?bar@S@@QAEXXZ"
32 // PCH: define weak_odr dso_local dllexport x86_thiscallcc void @"?bar@S@@QAEXXZ"
33 // PCHWITHOBJ-NOT: define {{.*}}bar
34 };
35 
36 // This isn't dllexported, attribute((used)) or referenced, so not emitted.
37 inline void quux() {}
38 // OBJ-NOT: define {{.*}}quux
39 // PCH-NOT: define {{.*}}quux
40 // PCHWITHOBJ-NOT: define {{.*}}quux
41 
42 // Referenced non-dllexport function.
43 inline void referencedNonExported() {}
44 // OBJ: define {{.*}}referencedNonExported
45 // PCH: define {{.*}}referencedNonExported
46 // PCHWITHOBJ: define {{.*}}referencedNonExported
47 
48 template <typename T> void __declspec(dllexport) implicitInstantiation(T) {}
49 
50 template <typename T> inline void __declspec(dllexport) explicitSpecialization(T) {}
51 
52 template <typename T> void __declspec(dllexport) explicitInstantiationDef(T) {}
53 
54 template <typename T> void __declspec(dllexport) explicitInstantiationDefAfterDecl(T) {}
55 extern template void explicitInstantiationDefAfterDecl<int>(int);
56 
57 template <typename T> T __declspec(dllexport) variableTemplate;
58 extern template int variableTemplate<int>;
59 
60 namespace pr38934 {
61 template <typename T> struct S {};
62 extern template struct S<int>;
63 // The use here causes the S<int>::operator= decl to go into the PCH.
64 inline void use(S<int> *a, S<int> *b) { *a = *b; };
65 }
66 
67 #else
68 
69 void use() {
70   baz();
71   referencedNonExported();
72 }
73 
74 // Templates can be tricky. None of the definitions below come from the PCH.
75 
76 void useTemplate() { implicitInstantiation(42); }
77 // PCHWITHOBJ: define weak_odr dso_local dllexport void @"??$implicitInstantiation@H@@YAXH@Z"
78 
79 template<> inline void __declspec(dllexport) explicitSpecialization<int>(int) {}
80 // PCHWITHOBJ: define weak_odr dso_local  dllexport void @"??$explicitSpecialization@H@@YAXH@Z"
81 
82 template void __declspec(dllexport) explicitInstantiationDef<int>(int);
83 // PCHWITHOBJ: define weak_odr dso_local dllexport void @"??$explicitInstantiationDef@H@@YAXH@Z"
84 
85 template void __declspec(dllexport) explicitInstantiationDefAfterDecl<int>(int);
86 // PCHWITHOBJ: define weak_odr dso_local dllexport void @"??$explicitInstantiationDefAfterDecl@H@@YAXH@Z"(i32 %0)
87 
88 template int __declspec(dllexport) variableTemplate<int>;
89 // PCHWITHOBJVARS: @"??$variableTemplate@H@@3HA" = weak_odr dso_local dllexport global
90 
91 // PR38934: Make sure S<int>::operator= gets emitted. While it itself isn't a
92 // template specialization, its parent is.
93 template struct __declspec(dllexport) pr38934::S<int>;
94 // PCHWITHOBJ: define weak_odr dso_local dllexport x86_thiscallcc dereferenceable(1) %"struct.pr38934::S"* @"??4?$S@H@pr38934@@QAEAAU01@ABU01@@Z"
95 
96 #endif
97