; REQUIRES: asserts ; RUN: opt -regions -analyze < %s | FileCheck %s ; RUN: opt -regions -stats -analyze < %s 2>&1 | FileCheck -check-prefix=STAT %s ; RUN: opt -regions -print-region-style=bb -analyze < %s 2>&1 | FileCheck -check-prefix=BBIT %s ; RUN: opt -regions -print-region-style=rn -analyze < %s 2>&1 | FileCheck -check-prefix=RNIT %s ; RUN: opt < %s -passes='print' 2>&1 | FileCheck %s define void @BZ2_blockSort() nounwind { start: br label %while while: br label %while.body134.i.i while.body134.i.i: br i1 1, label %end, label %w w: br label %if.end140.i.i if.end140.i.i: br i1 1, label %while.end186.i.i, label %if.end183.i.i if.end183.i.i: br label %while.body134.i.i while.end186.i.i: br label %while end: ret void } ; CHECK-NOT: => ; CHECK: [0] start => ; CHECK: [1] while => end ; STAT: 2 region - The # of regions ; STAT: 1 region - The # of simple regions ; BBIT: start, while, while.body134.i.i, end, w, if.end140.i.i, while.end186.i.i, if.end183.i.i, ; BBIT: while, while.body134.i.i, w, if.end140.i.i, while.end186.i.i, if.end183.i.i, ; RNIT: start, while => end, end, ; RNIT: while, while.body134.i.i, w, if.end140.i.i, while.end186.i.i, if.end183.i.i,