xref: /llvm-project/clang/test/CodeGen/inline.c (revision 0f1c1be1968076d6f96f8a7bcc4a15cf195ecd97)
1 // REQUIRES: x86-registered-target
2 //
3 // RUN: echo "GNU89 tests:"
4 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -Wno-strict-prototypes -O1 -disable-llvm-passes -emit-llvm -o - -std=gnu89 | FileCheck %s --check-prefix=CHECK1
5 // CHECK1-LABEL: define{{.*}} i32 @foo()
6 // CHECK1-LABEL: define{{.*}} i32 @bar()
7 // CHECK1-LABEL: define{{.*}} void @unreferenced1()
8 // CHECK1-NOT: unreferenced2
9 // CHECK1-LABEL: define{{.*}} void @gnu_inline()
10 // CHECK1-LABEL: define{{.*}} i32 @test1
11 // CHECK1-LABEL: define{{.*}} i32 @test2
12 // CHECK1-LABEL: define{{.*}} void @test3()
13 // CHECK1-LABEL: define available_externally i32 @test4
14 // CHECK1-LABEL: define available_externally i32 @test5
15 // CHECK1-LABEL: define{{.*}} i32 @test6
16 // CHECK1-LABEL: define{{.*}} void @test7
17 // CHECK1: define{{.*}} i{{..}} @strlcpy
18 // CHECK1-NOT: test9
19 // CHECK1-LABEL: define{{.*}} void @testA
20 // CHECK1-LABEL: define{{.*}} void @testB
21 // CHECK1-LABEL: define{{.*}} void @testC
22 // CHECK1-LABEL: define available_externally i32 @ei()
23 // CHECK1-LABEL: define available_externally void @gnu_ei_inline()
24 
25 // RUN: echo "C99 tests:"
26 // RUN: %clang_cc1 %s -triple i386-unknown-unknown -Wno-strict-prototypes -O1 -disable-llvm-passes -emit-llvm -o - -std=gnu99 | FileCheck %s --check-prefix=CHECK2
27 // CHECK2-LABEL: define{{.*}} i32 @ei()
28 // CHECK2-LABEL: define{{.*}} i32 @bar()
29 // CHECK2-NOT: unreferenced1
30 // CHECK2-LABEL: define{{.*}} void @unreferenced2()
31 // CHECK2-LABEL: define{{.*}} void @gnu_inline()
32 // CHECK2-LABEL: define{{.*}} i32 @test1
33 // CHECK2-LABEL: define{{.*}} i32 @test2
34 // CHECK2-LABEL: define{{.*}} void @test3
35 // CHECK2-LABEL: define available_externally i32 @test4
36 // CHECK2-LABEL: define available_externally i32 @test5
37 // CHECK2-LABEL: define{{.*}} i32 @test6
38 // CHECK2-LABEL: define{{.*}} void @test7
39 // CHECK2: define available_externally i{{..}} @strlcpy
40 // CHECK2-LABEL: define{{.*}} void @test9
41 // CHECK2-LABEL: define{{.*}} void @testA
42 // CHECK2-LABEL: define{{.*}} void @testB
43 // CHECK2-LABEL: define{{.*}} void @testC
44 // CHECK2-LABEL: define available_externally i32 @foo()
45 // CHECK2-LABEL: define available_externally void @gnu_ei_inline()
46 
47 // RUN: echo "C++ tests:"
48 // 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
49 // CHECK3-LABEL: define{{.*}} i32 @_Z3barv()
50 // CHECK3-LABEL: define linkonce_odr noundef i32 @_Z3foov()
51 // CHECK3-NOT: unreferenced
52 // CHECK3-LABEL: define available_externally void @_Z10gnu_inlinev()
53 // CHECK3-LABEL: define available_externally void @_Z13gnu_ei_inlinev()
54 // CHECK3-NOT: @_Z5testCv
55 // CHECK3-LABEL: define linkonce_odr noundef i32 @_Z2eiv()
56 
57 // RUN: echo "MS C Mode tests:"
58 // RUN: %clang_cc1 %s -triple i386-pc-win32 -Wno-strict-prototypes -O1 -disable-llvm-passes -emit-llvm -o - -std=c99 | FileCheck %s --check-prefix=CHECK4
59 // CHECK4-NOT: define weak_odr void @_Exit(
60 // CHECK4-LABEL: define weak_odr dso_local i32 @ei()
61 // CHECK4-LABEL: define dso_local i32 @bar()
62 // CHECK4-NOT: unreferenced1
63 // CHECK4-LABEL: define weak_odr dso_local void @unreferenced2()
64 // CHECK4-LABEL: define dso_local void @gnu_inline()
65 // CHECK4-LABEL: define linkonce_odr dso_local i32 @foo()
66 // CHECK4-LABEL: define available_externally dso_local void @gnu_ei_inline()
67 
68 __attribute__((noreturn)) void __cdecl _exit(int _Code);
_Exit(int status)69 __inline void __cdecl _Exit(int status) { _exit(status); }
70 
ei()71 extern __inline int ei() { return 123; }
72 
foo()73 __inline int foo() {
74   return ei();
75 }
76 
bar()77 int bar() { return foo(); }
78 
79 
unreferenced1()80 __inline void unreferenced1() {}
unreferenced2()81 extern __inline void unreferenced2() {}
82 
gnu_inline()83 __inline __attribute((__gnu_inline__)) void gnu_inline() {}
84 void (*P1)() = gnu_inline;
85 
86 // PR3988
gnu_ei_inline()87 extern __inline __attribute__((gnu_inline)) void gnu_ei_inline() {}
88 void (*P)() = gnu_ei_inline;
89 
90 int test1();
test1()91 __inline int test1() { return 4; }
test2()92 __inline int test2() { return 5; }
93 __inline int test2();
94 int test2();
95 
test_test1()96 void test_test1() { test1(); }
test_test2()97 void test_test2() { test2(); }
98 
99 // PR3989
100 extern __inline void test3() __attribute__((gnu_inline));
test3()101 __inline void __attribute__((gnu_inline)) test3() {}
102 
103 extern int test4(void);
test4(void)104 extern __inline __attribute__ ((__gnu_inline__)) int test4(void)
105 {
106   return 0;
107 }
108 
test_test4()109 void test_test4() { test4(); }
110 
111 extern __inline int test5(void)  __attribute__ ((__gnu_inline__));
test5(void)112 extern __inline int __attribute__ ((__gnu_inline__)) test5(void)
113 {
114   return 0;
115 }
116 
test_test5()117 void test_test5() { test5(); }
118 
119 // PR10233
120 
test6()121 __inline int test6() { return 0; }
122 extern int test6();
123 
124 
125 // No PR#, but this once crashed clang in C99 mode due to buggy extern inline
126 // redeclaration detection.
test7()127 void test7() { }
128 void test7();
129 
130 // PR11062; the fact that the function is named strlcpy matters here.
strlcpy(char * dest,const char * src,__typeof(sizeof (int)) size)131 inline __typeof(sizeof(int)) strlcpy(char *dest, const char *src, __typeof(sizeof(int)) size) { return 3; }
test8()132 void test8() { strlcpy(0,0,0); }
133 
134 // PR10657; the test crashed in C99 mode
test9()135 extern inline void test9() { }
136 void test9();
137 
testA()138 inline void testA() {}
139 void testA();
140 
141 void testB();
testB()142 inline void testB() {}
143 extern void testB();
144 
testC()145 extern inline void testC() {}
146 inline void testC();
147