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 void @gnu_ei_inline()
21// CHECK1-LABEL: define available_externally i32 @ei()
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 void @gnu_ei_inline()
43// CHECK2-LABEL: define available_externally i32 @foo()
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-LABEL: define linkonce_odr i32 @_Z2eiv()
53
54// RUN: echo "MS C Mode tests:"
55// RUN: %clang_cc1 %s -triple i386-unknown-unknown -O1 -disable-llvm-optzns -emit-llvm -o - -std=c99 -fms-compatibility | FileCheck %s --check-prefix=CHECK4
56// CHECK4-LABEL: define weak_odr i32 @ei()
57// CHECK4-LABEL: define i32 @bar()
58// CHECK4-NOT: unreferenced1
59// CHECK4-LABEL: define weak_odr void @unreferenced2()
60// CHECK4-LABEL: define void @gnu_inline()
61// CHECK4-LABEL: define available_externally void @gnu_ei_inline()
62// CHECK4-LABEL: define linkonce_odr i32 @foo()
63
64extern __inline int ei() { return 123; }
65
66__inline int foo() {
67  return ei();
68}
69
70int bar() { return foo(); }
71
72
73__inline void unreferenced1() {}
74extern __inline void unreferenced2() {}
75
76__inline __attribute((__gnu_inline__)) void gnu_inline() {}
77
78// PR3988
79extern __inline __attribute__((gnu_inline)) void gnu_ei_inline() {}
80void (*P)() = gnu_ei_inline;
81
82// <rdar://problem/6818429>
83int test1();
84__inline int test1() { return 4; }
85__inline int test2() { return 5; }
86__inline int test2();
87int test2();
88
89void test_test1() { test1(); }
90void test_test2() { test2(); }
91
92// PR3989
93extern __inline void test3() __attribute__((gnu_inline));
94__inline void __attribute__((gnu_inline)) test3() {}
95
96extern int test4(void);
97extern __inline __attribute__ ((__gnu_inline__)) int test4(void)
98{
99  return 0;
100}
101
102void test_test4() { test4(); }
103
104extern __inline int test5(void)  __attribute__ ((__gnu_inline__));
105extern __inline int __attribute__ ((__gnu_inline__)) test5(void)
106{
107  return 0;
108}
109
110void test_test5() { test5(); }
111
112// PR10233
113
114__inline int test6() { return 0; }
115extern int test6();
116
117
118// No PR#, but this once crashed clang in C99 mode due to buggy extern inline
119// redeclaration detection.
120void test7() { }
121void test7();
122
123// PR11062; the fact that the function is named strlcpy matters here.
124inline __typeof(sizeof(int)) strlcpy(char *dest, const char *src, __typeof(sizeof(int)) size) { return 3; }
125void test8() { strlcpy(0,0,0); }
126
127// PR10657; the test crashed in C99 mode
128extern inline void test9() { }
129void test9();
130
131inline void testA() {}
132void testA();
133
134void testB();
135inline void testB() {}
136extern void testB();
137
138extern inline void testC() {}
139inline void testC();
140