CHECK: __libunwind_Registers_x86_64_jumpto
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK:      lfence
CHECK-NEXT: popq [[REGISTER:%[a-z]+]]
CHECK-NEXT: lfence
CHECK-NEXT: popq [[REGISTER:%[a-z]+]]
CHECK-NEXT: lfence
CHECK-NEXT: jmpq *[[REGISTER]]