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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 {
10end165:
11  br i1 1, label %false239, label %true181
12
13true181:
14  br i1 1, label %then187, label %else232
15
16then187:
17  br label %end265
18
19else232:
20  br i1 1, label %false239, label %then245
21
22false239:
23  br i1 1, label %then245, label %else259
24
25then245:
26  br i1 1, label %then251, label %end253
27
28then251:
29  br label %end253
30
31end253:
32  br label %end265
33
34else259:
35  br label %end265
36
37end265:
38  br i1 1, label %then291, label %end298
39
40then291:
41  br label %end298
42
43end298:
44  ret i8 1
45}
46
47; CHECK-NOT: =>
48; CHECK: [0] end165 => <Function Return>
49; CHECK-NEXT: [1] end165 => end265
50; CHECK-NEXT: [2] then245 => end253
51; CHECK-NEXT: [1] end265 => end298
52
53; STAT: 4 region - The # of regions
54
55; BBIT: end165, false239, then245, then251, end253, end265, then291, end298, else259, true181, then187, else232,
56; BBIT: end165, false239, then245, then251, end253, else259, true181, then187, else232,
57; BBIT: then245, then251,
58; BBIT: end265, then291,
59
60; RNIT: end165 => end265, end265 => end298, end298,
61; RNIT: end165, false239, then245 => end253, end253, else259, true181, then187, else232,
62; RNIT: then245, then251,
63; RNIT: end265, then291,
64