1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; PR13228 4*9880d681SAndroid Build Coastguard Workerdefine void @f() nounwind uwtable readnone { 5*9880d681SAndroid Build Coastguard Workerentry: 6*9880d681SAndroid Build Coastguard Worker br label %for.cond 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Workerfor.cond: ; preds = %for.cond, %entry 9*9880d681SAndroid Build Coastguard Worker %c.0 = phi i8 [ 1, %entry ], [ 0, %for.cond ] 10*9880d681SAndroid Build Coastguard Worker %i.0 = phi i8 [ 0, %entry ], [ %inc, %for.cond ] 11*9880d681SAndroid Build Coastguard Worker %lnot = icmp eq i8 %i.0, 0 12*9880d681SAndroid Build Coastguard Worker %inc = add i8 %i.0, 1 13*9880d681SAndroid Build Coastguard Worker br i1 %lnot, label %for.cond, label %while.cond 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Workerwhile.cond: ; preds = %while.body, %for.cond 16*9880d681SAndroid Build Coastguard Worker %b.2 = phi i8 [ %add, %while.body ], [ 0, %for.cond ] 17*9880d681SAndroid Build Coastguard Worker br i1 undef, label %while.end, label %while.body 18*9880d681SAndroid Build Coastguard Worker 19*9880d681SAndroid Build Coastguard Workerwhile.body: ; preds = %while.cond 20*9880d681SAndroid Build Coastguard Worker %add = add i8 %b.2, %c.0 21*9880d681SAndroid Build Coastguard Worker %tobool7 = icmp eq i8 %add, 0 22*9880d681SAndroid Build Coastguard Worker br i1 %tobool7, label %while.end, label %while.cond 23*9880d681SAndroid Build Coastguard Worker 24*9880d681SAndroid Build Coastguard Workerwhile.end: ; preds = %while.body, %while.cond 25*9880d681SAndroid Build Coastguard Worker ret void 26*9880d681SAndroid Build Coastguard Worker} 27*9880d681SAndroid Build Coastguard Worker;CHECK: Loop %while.cond: <multiple exits> Unpredictable backedge-taken count. 28