| ; RUN: llc -mtriple=thumbv7-apple-ios -mcpu=cortex-a8 < %s | 
 |  | 
 | ; rdar://10196296 | 
 | ; ARM target specific dag combine created a cycle in DAG. | 
 |  | 
 | define void @t() nounwind ssp { | 
 |   %1 = load i64, i64* undef, align 4 | 
 |   %2 = shl i32 5, 0 | 
 |   %3 = zext i32 %2 to i64 | 
 |   %4 = and i64 %1, %3 | 
 |   %5 = lshr i64 %4, undef | 
 |   switch i64 %5, label %8 [ | 
 |     i64 0, label %9 | 
 |     i64 1, label %6 | 
 |     i64 4, label %9 | 
 |     i64 5, label %7 | 
 |   ] | 
 |  | 
 | ; <label>:6                                       ; preds = %0 | 
 |   unreachable | 
 |  | 
 | ; <label>:7                                       ; preds = %0 | 
 |   unreachable | 
 |  | 
 | ; <label>:8                                       ; preds = %0 | 
 |   unreachable | 
 |  | 
 | ; <label>:9                                       ; preds = %0, %0 | 
 |   ret void | 
 | } |