1// REQUIRES: arm-registered-target
2// RUN: %clang_cc1 -triple arm-unknown-linux-gnueabi -emit-llvm -o - %s | FileCheck %s
3
4// CHECK: declare i32 @printf(i8*, ...)
5void f0() {
6  printf("a\n");
7}
8
9// CHECK: call void @exit
10// CHECK: unreachable
11void f1() {
12  exit(1);
13}
14
15// CHECK: call i8* @strstr{{.*}} [[NUW:#[0-9]+]]
16char* f2(char* a, char* b) {
17  return __builtin_strstr(a, b);
18}
19
20// frexp is NOT readnone. It writes to its pointer argument.
21// <rdar://problem/10070234>
22//
23// CHECK: f3
24// CHECK: call double @frexp(double %
25// CHECK-NOT: readnone
26// CHECK: call float @frexpf(float %
27// CHECK-NOT: readnone
28// CHECK: call double @frexpl(double %
29// CHECK-NOT: readnone
30//
31// Same thing for modf and friends.
32//
33// CHECK: call double @modf(double %
34// CHECK-NOT: readnone
35// CHECK: call float @modff(float %
36// CHECK-NOT: readnone
37// CHECK: call double @modfl(double %
38// CHECK-NOT: readnone
39//
40// CHECK: call double @remquo(double %
41// CHECK-NOT: readnone
42// CHECK: call float @remquof(float %
43// CHECK-NOT: readnone
44// CHECK: call double @remquol(double %
45// CHECK-NOT: readnone
46// CHECK: ret
47int f3(double x) {
48  int e;
49  __builtin_frexp(x, &e);
50  __builtin_frexpf(x, &e);
51  __builtin_frexpl(x, &e);
52  __builtin_modf(x, &e);
53  __builtin_modff(x, &e);
54  __builtin_modfl(x, &e);
55  __builtin_remquo(x, x, &e);
56  __builtin_remquof(x, x, &e);
57  __builtin_remquol(x, x, &e);
58  return e;
59}
60
61// CHECK: attributes [[NUW]] = { nounwind{{.*}} }
62