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