1 // RUN: %clang_cc1 -O1 %s -S -emit-llvm -o - | FileCheck %s
2 // RUN: %clang_cc1 -O1 %s -S -emit-llvm -o - | opt -ipconstprop -S | FileCheck --check-prefix=IPCP %s
3 
4 // CHECK: declare !callback ![[cid:[0-9]+]] {{.*}}i32 @pthread_create
5 // CHECK: ![[cid]] = !{![[cidb:[0-9]+]]}
6 // CHECK: ![[cidb]] = !{i64 2, i64 3, i1 false}
7 
8 // Taken from test/Analysis/retain-release.m
9 //{
10 struct _opaque_pthread_t {};
11 struct _opaque_pthread_attr_t {};
12 typedef struct _opaque_pthread_t *__darwin_pthread_t;
13 typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
14 typedef __darwin_pthread_t pthread_t;
15 typedef __darwin_pthread_attr_t pthread_attr_t;
16 
17 int pthread_create(pthread_t *, const pthread_attr_t *,
18                    void *(*)(void *), void *);
19 //}
20 
21 const int GlobalVar = 0;
22 
23 static void *callee0(void *payload) {
24 // IPCP:      define internal i8* @callee0
25 // IPCP:        ret i8* null
26   return payload;
27 }
28 
29 static void *callee1(void *payload) {
30 // IPCP:      define internal i8* @callee1
31 // IPCP:        ret i8* bitcast (i32* @GlobalVar to i8*)
32   return payload;
33 }
34 
35 void foo() {
36   pthread_t MyFirstThread;
37   pthread_create(&MyFirstThread, 0, callee0, 0);
38 
39   pthread_t MySecondThread;
40   pthread_create(&MySecondThread, 0, callee1, (void *)&GlobalVar);
41 }
42