1// RUN: echo "GNU89 tests:"
2// RUN: %clang_cc1 %s -triple i386-unknown-unknown -O1 -disable-llvm-optzns -emit-llvm -o - -std=gnu89 | FileCheck %s --check-prefix=CHECK1
3// CHECK1-LABEL: define i32 @foo()
4// CHECK1-LABEL: define i32 @bar()
5// CHECK1-LABEL: define void @unreferenced1()
6// CHECK1-NOT: unreferenced2
7// CHECK1-LABEL: define void @gnu_inline()
8// CHECK1-LABEL: define i32 @test1
9// CHECK1-LABEL: define i32 @test2
10// CHECK1-LABEL: define void @test3()
11// CHECK1-LABEL: define available_externally i32 @test4
12// CHECK1-LABEL: define available_externally i32 @test5
13// CHECK1-LABEL: define i32 @test6
14// CHECK1-LABEL: define void @test7
15// CHECK1: define i{{..}} @strlcpy
16// CHECK1-NOT: test9
17// CHECK1-LABEL: define void @testA
18// CHECK1-LABEL: define void @testB
19// CHECK1-LABEL: define void @testC
20// CHECK1-LABEL: define available_externally i32 @ei()
21// CHECK1-LABEL: define available_externally void @gnu_ei_inline()
22
23// RUN: echo "C99 tests:"
24// RUN: %clang_cc1 %s -triple i386-unknown-unknown -O1 -disable-llvm-optzns -emit-llvm -o - -std=gnu99 | FileCheck %s --check-prefix=CHECK2
25// CHECK2-LABEL: define i32 @ei()
26// CHECK2-LABEL: define i32 @bar()
27// CHECK2-NOT: unreferenced1
28// CHECK2-LABEL: define void @unreferenced2()
29// CHECK2-LABEL: define void @gnu_inline()
30// CHECK2-LABEL: define i32 @test1
31// CHECK2-LABEL: define i32 @test2
32// CHECK2-LABEL: define void @test3
33// CHECK2-LABEL: define available_externally i32 @test4
34// CHECK2-LABEL: define available_externally i32 @test5
35// CHECK2-LABEL: define i32 @test6
36// CHECK2-LABEL: define void @test7
37// CHECK2: define available_externally i{{..}} @strlcpy
38// CHECK2-LABEL: define void @test9
39// CHECK2-LABEL: define void @testA
40// CHECK2-LABEL: define void @testB
41// CHECK2-LABEL: define void @testC
42// CHECK2-LABEL: define available_externally i32 @foo()
43// CHECK2-LABEL: define available_externally void @gnu_ei_inline()
44
45// RUN: echo "C++ tests:"
46// RUN: %clang_cc1 -x c++ %s -triple i386-unknown-unknown -O1 -disable-llvm-optzns -emit-llvm -o - -std=c++98 | FileCheck %s --check-prefix=CHECK3
47// CHECK3-LABEL: define i32 @_Z3barv()
48// CHECK3-LABEL: define linkonce_odr i32 @_Z3foov()
49// CHECK3-NOT: unreferenced
50// CHECK3-LABEL: define void @_Z10gnu_inlinev()
51// CHECK3-LABEL: define available_externally void @_Z13gnu_ei_inlinev()
52// CHECK3-NOT: @_Z5testCv
53// CHECK3-LABEL: define linkonce_odr i32 @_Z2eiv()
54
55// RUN: echo "MS C Mode tests:"
56// RUN: %clang_cc1 %s -triple i386-pc-win32 -O1 -disable-llvm-optzns -emit-llvm -o - -std=c99 | FileCheck %s --check-prefix=CHECK4
57// CHECK4-NOT: define weak_odr void @_Exit(
58// CHECK4-LABEL: define weak_odr i32 @ei()
59// CHECK4-LABEL: define i32 @bar()
60// CHECK4-NOT: unreferenced1
61// CHECK4-LABEL: define weak_odr void @unreferenced2()
62// CHECK4-LABEL: define void @gnu_inline()
63// CHECK4-LABEL: define linkonce_odr i32 @foo()
64// CHECK4-LABEL: define available_externally void @gnu_ei_inline()
65
66__attribute__((noreturn)) void __cdecl _exit(int _Code);
67__inline void __cdecl _Exit(int status) { _exit(status); }
68
69extern __inline int ei() { return 123; }
70
71__inline int foo() {
72  return ei();
73}
74
75int bar() { return foo(); }
76
77
78__inline void unreferenced1() {}
79extern __inline void unreferenced2() {}
80
81__inline __attribute((__gnu_inline__)) void gnu_inline() {}
82
83// PR3988
84extern __inline __attribute__((gnu_inline)) void gnu_ei_inline() {}
85void (*P)() = gnu_ei_inline;
86
87// <rdar://problem/6818429>
88int test1();
89__inline int test1() { return 4; }
90__inline int test2() { return 5; }
91__inline int test2();
92int test2();
93
94void test_test1() { test1(); }
95void test_test2() { test2(); }
96
97// PR3989
98extern __inline void test3() __attribute__((gnu_inline));
99__inline void __attribute__((gnu_inline)) test3() {}
100
101extern int test4(void);
102extern __inline __attribute__ ((__gnu_inline__)) int test4(void)
103{
104  return 0;
105}
106
107void test_test4() { test4(); }
108
109extern __inline int test5(void)  __attribute__ ((__gnu_inline__));
110extern __inline int __attribute__ ((__gnu_inline__)) test5(void)
111{
112  return 0;
113}
114
115void test_test5() { test5(); }
116
117// PR10233
118
119__inline int test6() { return 0; }
120extern int test6();
121
122
123// No PR#, but this once crashed clang in C99 mode due to buggy extern inline
124// redeclaration detection.
125void test7() { }
126void test7();
127
128// PR11062; the fact that the function is named strlcpy matters here.
129inline __typeof(sizeof(int)) strlcpy(char *dest, const char *src, __typeof(sizeof(int)) size) { return 3; }
130void test8() { strlcpy(0,0,0); }
131
132// PR10657; the test crashed in C99 mode
133extern inline void test9() { }
134void test9();
135
136inline void testA() {}
137void testA();
138
139void testB();
140inline void testB() {}
141extern void testB();
142
143extern inline void testC() {}
144inline void testC();
145