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 internal fastcc void @compress() nounwind { 9end33: 10 br i1 1, label %end124, label %lor.lhs.false95 11 12lor.lhs.false95: 13 br i1 1, label %then107, label %end172 14 15then107: 16 br i1 1, label %end124, label %then113 17 18then113: 19 br label %end124 20 21end124: 22 br label %exit 23 24end172: 25 br label %exit 26 27 28exit: 29 unreachable 30 31 32} 33; CHECK-NOT: => 34; CHECK: [0] end33 => <Function Return> 35; CHECK-NEXT: [1] end33 => exit 36; CHECK-NEXT: [2] then107 => end124 37 38; STAT: 3 region - The # of regions 39 40; BBIT: end33, end124, exit, lor.lhs.false95, then107, then113, end172, 41; BBIT: end33, end124, lor.lhs.false95, then107, then113, end172, 42; BBIT: then107, then113, 43 44; RNIT: end33 => exit, exit, 45; RNIT: end33, end124, lor.lhs.false95, then107 => end124, end172, 46; RNIT: then107, then113, 47