1 // REQUIRES: x86-registered-target
2 //
3 // RUN: echo "GNU89 tests:"
4 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -O1 -disable-llvm-passes -emit-llvm -o - -std=gnu89 | FileCheck %s --check-prefix=CHECK1
5 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -fexperimental-new-pass-manager -O1 -disable-llvm-passes -emit-llvm -o - -std=gnu89 | FileCheck %s --check-prefix=CHECK1
6 // CHECK1-LABEL: define i32 @foo()
7 // CHECK1-LABEL: define i32 @bar()
8 // CHECK1-LABEL: define void @unreferenced1()
9 // CHECK1-NOT: unreferenced2
10 // CHECK1-LABEL: define void @gnu_inline()
11 // CHECK1-LABEL: define i32 @test1
12 // CHECK1-LABEL: define i32 @test2
13 // CHECK1-LABEL: define void @test3()
14 // CHECK1-LABEL: define available_externally i32 @test4
15 // CHECK1-LABEL: define available_externally i32 @test5
16 // CHECK1-LABEL: define i32 @test6
17 // CHECK1-LABEL: define void @test7
18 // CHECK1: define i{{..}} @strlcpy
19 // CHECK1-NOT: test9
20 // CHECK1-LABEL: define void @testA
21 // CHECK1-LABEL: define void @testB
22 // CHECK1-LABEL: define void @testC
23 // CHECK1-LABEL: define available_externally i32 @ei()
24 // CHECK1-LABEL: define available_externally void @gnu_ei_inline()
25 
26 // RUN: echo "C99 tests:"
27 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -O1 -disable-llvm-passes -emit-llvm -o - -std=gnu99 | FileCheck %s --check-prefix=CHECK2
28 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -fexperimental-new-pass-manager -O1 -disable-llvm-passes -emit-llvm -o - -std=gnu99 | FileCheck %s --check-prefix=CHECK2
29 // CHECK2-LABEL: define i32 @ei()
30 // CHECK2-LABEL: define i32 @bar()
31 // CHECK2-NOT: unreferenced1
32 // CHECK2-LABEL: define void @unreferenced2()
33 // CHECK2-LABEL: define void @gnu_inline()
34 // CHECK2-LABEL: define i32 @test1
35 // CHECK2-LABEL: define i32 @test2
36 // CHECK2-LABEL: define void @test3
37 // CHECK2-LABEL: define available_externally i32 @test4
38 // CHECK2-LABEL: define available_externally i32 @test5
39 // CHECK2-LABEL: define i32 @test6
40 // CHECK2-LABEL: define void @test7
41 // CHECK2: define available_externally i{{..}} @strlcpy
42 // CHECK2-LABEL: define void @test9
43 // CHECK2-LABEL: define void @testA
44 // CHECK2-LABEL: define void @testB
45 // CHECK2-LABEL: define void @testC
46 // CHECK2-LABEL: define available_externally i32 @foo()
47 // CHECK2-LABEL: define available_externally void @gnu_ei_inline()
48 
49 // RUN: echo "C++ tests:"
50 // RUN: %clang_cc1 -x c++ %s -triple i386-unknown-unknown -O1 -disable-llvm-passes -emit-llvm -o - -std=c++98 | FileCheck %s --check-prefix=CHECK3
51 // RUN: %clang_cc1 -x c++ %s -triple i386-unknown-unknown -fexperimental-new-pass-manager -O1 -disable-llvm-passes -emit-llvm -o - -std=c++98 | FileCheck %s --check-prefix=CHECK3
52 // CHECK3-LABEL: define i32 @_Z3barv()
53 // CHECK3-LABEL: define linkonce_odr i32 @_Z3foov()
54 // CHECK3-NOT: unreferenced
55 // CHECK3-LABEL: define available_externally void @_Z10gnu_inlinev()
56 // CHECK3-LABEL: define available_externally void @_Z13gnu_ei_inlinev()
57 // CHECK3-NOT: @_Z5testCv
58 // CHECK3-LABEL: define linkonce_odr i32 @_Z2eiv()
59 
60 // RUN: echo "MS C Mode tests:"
61 // RUN: %clang_cc1 %s -triple i386-pc-win32 -O1 -disable-llvm-passes -emit-llvm -o - -std=c99 | FileCheck %s --check-prefix=CHECK4
62 // RUN: %clang_cc1 %s -triple i386-pc-win32 -fexperimental-new-pass-manager -O1 -disable-llvm-passes -emit-llvm -o - -std=c99 | FileCheck %s --check-prefix=CHECK4
63 // CHECK4-NOT: define weak_odr void @_Exit(
64 // CHECK4-LABEL: define weak_odr dso_local i32 @ei()
65 // CHECK4-LABEL: define dso_local i32 @bar()
66 // CHECK4-NOT: unreferenced1
67 // CHECK4-LABEL: define weak_odr dso_local void @unreferenced2()
68 // CHECK4-LABEL: define dso_local void @gnu_inline()
69 // CHECK4-LABEL: define linkonce_odr dso_local i32 @foo()
70 // CHECK4-LABEL: define available_externally dso_local void @gnu_ei_inline()
71 
72 __attribute__((noreturn)) void __cdecl _exit(int _Code);
_Exit(int status)73 __inline void __cdecl _Exit(int status) { _exit(status); }
74 
ei()75 extern __inline int ei() { return 123; }
76 
foo()77 __inline int foo() {
78   return ei();
79 }
80 
bar()81 int bar() { return foo(); }
82 
83 
unreferenced1()84 __inline void unreferenced1() {}
unreferenced2()85 extern __inline void unreferenced2() {}
86 
gnu_inline()87 __inline __attribute((__gnu_inline__)) void gnu_inline() {}
88 void (*P1)() = gnu_inline;
89 
90 // PR3988
gnu_ei_inline()91 extern __inline __attribute__((gnu_inline)) void gnu_ei_inline() {}
92 void (*P)() = gnu_ei_inline;
93 
94 // <rdar://problem/6818429>
95 int test1();
test1()96 __inline int test1() { return 4; }
test2()97 __inline int test2() { return 5; }
98 __inline int test2();
99 int test2();
100 
test_test1()101 void test_test1() { test1(); }
test_test2()102 void test_test2() { test2(); }
103 
104 // PR3989
105 extern __inline void test3() __attribute__((gnu_inline));
test3()106 __inline void __attribute__((gnu_inline)) test3() {}
107 
108 extern int test4(void);
test4(void)109 extern __inline __attribute__ ((__gnu_inline__)) int test4(void)
110 {
111   return 0;
112 }
113 
test_test4()114 void test_test4() { test4(); }
115 
116 extern __inline int test5(void)  __attribute__ ((__gnu_inline__));
test5(void)117 extern __inline int __attribute__ ((__gnu_inline__)) test5(void)
118 {
119   return 0;
120 }
121 
test_test5()122 void test_test5() { test5(); }
123 
124 // PR10233
125 
test6()126 __inline int test6() { return 0; }
127 extern int test6();
128 
129 
130 // No PR#, but this once crashed clang in C99 mode due to buggy extern inline
131 // redeclaration detection.
test7()132 void test7() { }
133 void test7();
134 
135 // PR11062; the fact that the function is named strlcpy matters here.
strlcpy(char * dest,const char * src,__typeof (sizeof (int))size)136 inline __typeof(sizeof(int)) strlcpy(char *dest, const char *src, __typeof(sizeof(int)) size) { return 3; }
test8()137 void test8() { strlcpy(0,0,0); }
138 
139 // PR10657; the test crashed in C99 mode
test9()140 extern inline void test9() { }
141 void test9();
142 
testA()143 inline void testA() {}
144 void testA();
145 
146 void testB();
testB()147 inline void testB() {}
148 extern void testB();
149 
testC()150 extern inline void testC() {}
151 inline void testC();
152