1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=thumbv7-apple-darwin10 -relocation-model=pic -disable-fp-elim -mcpu=cortex-a8 | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; subs r4, #1 4*9880d681SAndroid Build Coastguard Worker; cmp r4, 0 5*9880d681SAndroid Build Coastguard Worker; bgt 6*9880d681SAndroid Build Coastguard Worker; cmp cannot be optimized away since it will clear the overflow bit. 7*9880d681SAndroid Build Coastguard Worker; gt / ge, lt, le conditions all depend on V bit. 8*9880d681SAndroid Build Coastguard Worker; rdar://9172742 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Workerdefine i32 @t() nounwind { 11*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: t: 12*9880d681SAndroid Build Coastguard Workerentry: 13*9880d681SAndroid Build Coastguard Worker br label %bb2 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Workerbb: ; preds = %bb2 16*9880d681SAndroid Build Coastguard Worker %0 = tail call i32 @rand() nounwind 17*9880d681SAndroid Build Coastguard Worker %1 = icmp eq i32 %0, 50 18*9880d681SAndroid Build Coastguard Worker br i1 %1, label %bb3, label %bb1 19*9880d681SAndroid Build Coastguard Worker 20*9880d681SAndroid Build Coastguard Workerbb1: ; preds = %bb 21*9880d681SAndroid Build Coastguard Worker %tmp = tail call i32 @puts() nounwind 22*9880d681SAndroid Build Coastguard Worker %indvar.next = add i32 %indvar, 1 23*9880d681SAndroid Build Coastguard Worker br label %bb2 24*9880d681SAndroid Build Coastguard Worker 25*9880d681SAndroid Build Coastguard Workerbb2: ; preds = %bb1, %entry 26*9880d681SAndroid Build Coastguard Worker; CHECK: bb2 27*9880d681SAndroid Build Coastguard Worker; CHECK: subs [[REG:r[0-9]+]], #1 28*9880d681SAndroid Build Coastguard Worker; CHECK: cmp [[REG]], #0 29*9880d681SAndroid Build Coastguard Worker; CHECK: ble 30*9880d681SAndroid Build Coastguard Worker %indvar = phi i32 [ %indvar.next, %bb1 ], [ 0, %entry ] 31*9880d681SAndroid Build Coastguard Worker %tries.0 = sub i32 2147483647, %indvar 32*9880d681SAndroid Build Coastguard Worker %tmp1 = icmp sgt i32 %tries.0, 0 33*9880d681SAndroid Build Coastguard Worker br i1 %tmp1, label %bb, label %bb3 34*9880d681SAndroid Build Coastguard Worker 35*9880d681SAndroid Build Coastguard Workerbb3: ; preds = %bb2, %bb 36*9880d681SAndroid Build Coastguard Worker ret i32 0 37*9880d681SAndroid Build Coastguard Worker} 38*9880d681SAndroid Build Coastguard Worker 39*9880d681SAndroid Build Coastguard Workerdeclare i32 @rand() 40*9880d681SAndroid Build Coastguard Worker 41*9880d681SAndroid Build Coastguard Workerdeclare i32 @puts() nounwind 42