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      1 ; RUN: llc -mtriple=thumbv6-apple-ios -mcpu=cortex-m0 < %s | FileCheck %s
      2 ; Cortex-M0 doesn't have 32-bit Thumb2 instructions (except for dmb, mrs, etc.)
      3 ; rdar://11331541
      4 
      5 define i32 @t(i32 %a) nounwind {
      6 ; CHECK-LABEL: t:
      7 ; CHECK: asrs [[REG1:(r[0-9]+)]], [[REG2:(r[0-9]+)]], #31
      8 ; CHECK: eors [[REG1]], [[REG2]]
      9   %tmp0 = ashr i32 %a, 31
     10   %tmp1 = xor i32 %tmp0, %a
     11   ret i32 %tmp1
     12 }
     13