1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -indvars -S | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; It is okay to do LFTR on this loop even though the trip count is a 6*9880d681SAndroid Build Coastguard Worker; division because in this case the division can be optimized to a 7*9880d681SAndroid Build Coastguard Worker; shift. 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdefine void @foo(i8* %a, i8 %n) nounwind uwtable ssp { 10*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @foo( 11*9880d681SAndroid Build Coastguard Worker entry: 12*9880d681SAndroid Build Coastguard Worker %e = icmp sgt i8 %n, 3 13*9880d681SAndroid Build Coastguard Worker br i1 %e, label %loop, label %exit 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Worker loop: 16*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: loop: 17*9880d681SAndroid Build Coastguard Worker %i = phi i8 [ 0, %entry ], [ %i.inc, %loop ] 18*9880d681SAndroid Build Coastguard Worker %i1 = phi i8 [ 0, %entry ], [ %i1.inc, %loop ] 19*9880d681SAndroid Build Coastguard Worker %i.inc = add nsw i8 %i, 4 20*9880d681SAndroid Build Coastguard Worker %i1.inc = add i8 %i1, 1 21*9880d681SAndroid Build Coastguard Worker store volatile i8 0, i8* %a 22*9880d681SAndroid Build Coastguard Worker %c = icmp slt i8 %i, %n 23*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: %exitcond = icmp ne i8 %i1.inc 24*9880d681SAndroid Build Coastguard Worker br i1 %c, label %loop, label %exit 25*9880d681SAndroid Build Coastguard Worker 26*9880d681SAndroid Build Coastguard Worker exit: 27*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: exit: 28*9880d681SAndroid Build Coastguard Worker ret void 29*9880d681SAndroid Build Coastguard Worker} 30