1*9880d681SAndroid Build Coastguard Worker; RUN: opt -S < %s -loop-unroll -block-freq | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; Crasher from PR20987. 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; CHECK: define void @update_loop_info_in_subloops 5*9880d681SAndroid Build Coastguard Worker; CHECK: entry: 6*9880d681SAndroid Build Coastguard Worker; CHECK: L: 7*9880d681SAndroid Build Coastguard Worker; CHECK: L.inner: 8*9880d681SAndroid Build Coastguard Worker; CHECK: L.inner.latch: 9*9880d681SAndroid Build Coastguard Worker; CHECK: L.latch: 10*9880d681SAndroid Build Coastguard Worker; CHECK: L.inner.1: 11*9880d681SAndroid Build Coastguard Worker; CHECK: L.inner.latch.1: 12*9880d681SAndroid Build Coastguard Worker; CHECK: L.latch.1: 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Workerdefine void @update_loop_info_in_subloops() { 15*9880d681SAndroid Build Coastguard Workerentry: 16*9880d681SAndroid Build Coastguard Worker br label %L 17*9880d681SAndroid Build Coastguard Worker 18*9880d681SAndroid Build Coastguard WorkerL: 19*9880d681SAndroid Build Coastguard Worker %0 = phi i64 [ 1, %entry ], [ %1, %L.latch ] 20*9880d681SAndroid Build Coastguard Worker br label %L.inner 21*9880d681SAndroid Build Coastguard Worker 22*9880d681SAndroid Build Coastguard WorkerL.inner: 23*9880d681SAndroid Build Coastguard Worker br label %L.inner.latch 24*9880d681SAndroid Build Coastguard Worker 25*9880d681SAndroid Build Coastguard WorkerL.inner.latch: 26*9880d681SAndroid Build Coastguard Worker br i1 false, label %L.latch, label %L.inner 27*9880d681SAndroid Build Coastguard Worker 28*9880d681SAndroid Build Coastguard WorkerL.latch: 29*9880d681SAndroid Build Coastguard Worker %1 = add i64 %0, 1 30*9880d681SAndroid Build Coastguard Worker %2 = icmp eq i64 %1, 3 31*9880d681SAndroid Build Coastguard Worker br i1 %2, label %exit, label %L 32*9880d681SAndroid Build Coastguard Worker 33*9880d681SAndroid Build Coastguard Workerexit: 34*9880d681SAndroid Build Coastguard Worker ret void 35*9880d681SAndroid Build Coastguard Worker} 36