1; RUN: llc < %s -mtriple=thumbv6-apple-darwin | FileCheck %s
2; RUN: llc < %s -mtriple=thumbv6-apple-darwin -regalloc=basic | FileCheck %s
3; rdar://8819685
4
5@__bar = external hidden global i8*
6@__baz = external hidden global i8*
7
8define i8* @_foo() {
9entry:
10; CHECK: foo:
11
12	%size = alloca i32, align 4
13	%0 = load i8** @__bar, align 4
14	%1 = icmp eq i8* %0, null
15	br i1 %1, label %bb1, label %bb3
16; CHECK: bne
17
18bb1:
19	store i32 1026, i32* %size, align 4
20	%2 = alloca [1026 x i8], align 1
21; CHECK: mov     [[R0:r[0-9]+]], sp
22; CHECK: adds    {{r[0-9]+}}, [[R0]], {{r[0-9]+}}
23	%3 = getelementptr inbounds [1026 x i8]* %2, i32 0, i32 0
24	%4 = call i32 @_called_func(i8* %3, i32* %size) nounwind
25	%5 = icmp eq i32 %4, 0
26	br i1 %5, label %bb2, label %bb3
27
28bb2:
29	%6 = call i8* @strdup(i8* %3) nounwind
30	store i8* %6, i8** @__baz, align 4
31	br label %bb3
32
33bb3:
34	%.0 = phi i8* [ %0, %entry ], [ %6, %bb2 ], [ %3, %bb1 ]
35; CHECK: subs    r4, #5
36; CHECK-NEXT: mov     sp, r4
37; CHECK-NEXT: pop     {r4, r5, r6, r7, pc}
38	ret i8* %.0
39}
40
41declare noalias i8* @strdup(i8* nocapture) nounwind
42declare i32 @_called_func(i8*, i32*) nounwind