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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
7; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s
8
9define internal fastcc zeroext i8 @handle_compress() nounwind {
10entry:
11  br label %outer
12
13outer:
14  br label %body
15
16body:
17  br i1 1, label %body.i, label %if.end
18
19body.i:
20  br i1 1, label %end, label %if.end
21
22if.end:
23  br label %if.then64
24
25if.then64:
26  br label %outer
27
28end:
29  ret i8 1
30}
31; CHECK-NOT: =>
32; CHECK: [0] entry => <Function Return>
33; CHECK-NEXT: [1] outer => end
34; STAT: 2 region - The # of regions
35; STAT: 1 region - The # of simple regions
36
37; BBIT: entry, outer, body, body.i, end, if.end, if.then64,
38; BBIT: outer, body, body.i, if.end, if.then64,
39
40; RNIT: entry, outer => end, end,
41; RNIT: outer, body, body.i, if.end, if.then64,
42