1; REQUIRES: asserts 2; RUN: opt -regions -analyze -enable-new-pm=0 < %s | FileCheck %s 3; RUN: opt -regions -stats -disable-output < %s 2>&1 | FileCheck -check-prefix=STAT %s 4 5; RUN: opt -regions -print-region-style=bb -analyze -enable-new-pm=0 < %s 2>&1 | FileCheck -check-prefix=BBIT %s 6; RUN: opt -regions -print-region-style=rn -analyze -enable-new-pm=0 < %s 2>&1 | FileCheck -check-prefix=RNIT %s 7 8; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s 9; RUN: opt < %s -passes='print<regions>' -stats 2>&1 | FileCheck -check-prefix=STAT %s 10; RUN: opt -passes='print<regions>' -print-region-style=bb < %s 2>&1 | FileCheck -check-prefix=BBIT %s 11; RUN: opt -passes='print<regions>' -print-region-style=rn < %s 2>&1 | FileCheck -check-prefix=RNIT %s 12 13define void @a_linear_impl_fig_1() nounwind { 14"0": 15 16 br i1 1, label %"1", label %"15" 17"1": 18 switch i32 0, label %"2" [ i32 0, label %"3" 19 i32 1, label %"7"] 20"2": 21 br label %"4" 22"3": 23 br label %"5" 24"4": 25 br label %"6" 26"5": 27 br label %"6" 28"6": 29 br label %"7" 30"7": 31 br label %"15" 32"15": 33 br label %"8" 34"8": 35 br label %"16" 36"16": 37 br label %"9" 38"9": 39 br i1 1, label %"10", label %"11" 40"11": 41 br i1 1, label %"13", label %"12" 42"13": 43 br label %"14" 44"12": 45 br label %"14" 46"14": 47 br label %"8" 48"10": 49 br label %"17" 50"17": 51 br label %"18" 52"18": 53 ret void 54} 55 56; CHECK-NOT: => 57; CHECK: [0] 0 => <Function Return> 58; CHECK-NEXT: [1] 0 => 15 59; CHECK-NEXT: [2] 1 => 7 60; CHECK-NEXT: [1] 8 => 10 61; CHECK-NEXT: [2] 11 => 14 62; STAT: 5 region - The # of regions 63; STAT: 1 region - The # of simple regions 64 65; BBIT: 0, 1, 2, 4, 6, 7, 15, 8, 16, 9, 10, 17, 18, 11, 13, 14, 12, 3, 5, 66; BBIT: 0, 1, 2, 4, 6, 7, 3, 5, 67; BBIT: 1, 2, 4, 6, 3, 5, 68; BBIT: 8, 16, 9, 11, 13, 14, 12, 69; BBIT: 11, 13, 12, 70 71; RNIT: 0 => 15, 15, 8 => 10, 10, 17, 18, 72; RNIT: 0, 1 => 7, 7, 73; RNIT: 1, 2, 4, 6, 3, 5, 74; RNIT: 8, 16, 9, 11 => 14, 14, 75; RNIT: 11, 13, 12, 76