1; REQUIRES: asserts
2; RUN: opt -regions -analyze < %s | FileCheck %s
3; RUN: opt -regions -stats < %s 2>&1 | FileCheck -check-prefix=STAT %s
4; RUN: opt -regions -print-region-style=bb  -analyze < %s 2>&1 | FileCheck -check-prefix=BBIT %s
5; RUN: opt -regions -print-region-style=rn  -analyze < %s 2>&1 | FileCheck -check-prefix=RNIT %s
6
7define internal fastcc zeroext i8 @handle_compress() nounwind {
8entry:
9  br label %outer
10
11outer:
12  br label %body
13
14body:
15  br i1 1, label %body.i, label %if.end
16
17body.i:
18  br i1 1, label %end, label %if.end
19
20if.end:
21  br label %if.then64
22
23if.then64:
24  br label %outer
25
26end:
27  ret i8 1
28}
29; CHECK-NOT: =>
30; CHECK: [0] entry => <Function Return>
31; CHECK-NEXT: [1] outer => end
32; STAT: 2 region - The # of regions
33; STAT: 1 region - The # of simple regions
34
35; BBIT: entry, outer, body, body.i, end, if.end, if.then64,
36; BBIT: outer, body, body.i, if.end, if.then64,
37
38; RNIT: entry, outer => end, end,
39; RNIT: outer, body, body.i, if.end, if.then64,
40