1; RUN: opt -S -instcombine <%s | FileCheck %s
2; rdar://problem/16165191
3; llvm.compiler.used functions should not be renamed
4
5target triple = "x86_64-apple-darwin11"
6
7@llvm.compiler.used = appending global [1 x i8*] [
8  i8* bitcast (i32(i8*)* @puts to i8*)
9  ], section "llvm.metadata"
10@llvm.used = appending global [1 x i8*] [
11  i8* bitcast (i32(i32)* @uses_printf to i8*)
12  ], section "llvm.metadata"
13
14@str = private unnamed_addr constant [13 x i8] c"hello world\0A\00"
15
16define i32 @uses_printf(i32 %i) {
17entry:
18  %s = getelementptr [13 x i8], [13 x i8]* @str, i64 0, i64 0
19  call i32 (i8*, ...) @printf(i8* %s)
20  ret i32 0
21}
22
23define internal i32 @printf(i8* readonly nocapture %fmt, ...) {
24entry:
25  %ret = call i32 @bar(i8* %fmt)
26  ret i32 %ret
27}
28
29; CHECK: define {{.*}} @puts(
30define internal i32 @puts(i8* %s) {
31entry:
32  %ret = call i32 @bar(i8* %s)
33  ret i32 %ret
34}
35
36declare i32 @bar(i8*)
37