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
5; RUN: opt -regions -print-region-style=bb  -analyze < %s 2>&1 | FileCheck -check-prefix=BBIT %s
6; RUN: opt -regions -print-region-style=rn  -analyze < %s 2>&1 | FileCheck -check-prefix=RNIT %s
7
8define void @a_linear_impl_fig_1() nounwind {
90:
10
11	br i1 1, label %"1", label %"15"
121:
13 	switch i32 0, label %"2" [ i32 0, label %"3"
14                                  i32 1, label %"7"]
152:
16	br label %"4"
173:
18	br label %"5"
194:
20	br label %"6"
215:
22	br label %"6"
236:
24	br label %"7"
257:
26	br label %"15"
2715:
28	br label %"8"
298:
30	br label %"16"
3116:
32        br label %"9"
339:
34	br i1 1, label %"10", label %"11"
3511:
36	br i1 1, label %"13", label %"12"
3713:
38	br label %"14"
3912:
40	br label %"14"
4114:
42	br label %"8"
4310:
44        br label %"17"
4517:
46        br label %"18"
4718:
48        ret void
49}
50
51; CHECK-NOT: =>
52; CHECK: [0] 0 => <Function Return>
53; CHECK-NEXT: [1] 0 => 15
54; CHECK-NEXT:  [2] 1 => 7
55; CHECK-NEXT: [1] 8 => 10
56; CHECK-NEXT:  [2] 11 => 14
57; STAT: 5 region - The # of regions
58; STAT: 1 region - The # of simple regions
59
60; BBIT: 0, 1, 2, 4, 6, 7, 15, 8, 16, 9, 10, 17, 18, 11, 13, 14, 12, 3, 5,
61; BBIT: 0, 1, 2, 4, 6, 7, 3, 5,
62; BBIT: 1, 2, 4, 6, 3, 5,
63; BBIT: 8, 16, 9, 11, 13, 14, 12,
64; BBIT: 11, 13, 12,
65
66; RNIT: 0 => 15, 15, 8 => 10, 10, 17, 18,
67; RNIT: 0, 1 => 7, 7,
68; RNIT: 1, 2, 4, 6, 3, 5,
69; RNIT: 8, 16, 9, 11 => 14, 14,
70; RNIT: 11, 13, 12,
71