1  /* { dg-do compile } */
       2  /* { dg-require-effective-target arm_arch_v6m_ok } */
       3  /* { dg-add-options arm_arch_v6m } */
       4  /* { dg-additional-options "-O2" } */
       5  /* { dg-final { scan-assembler-not "orr\[ \t\]" } } */
       6  
       7  #include "builtin-bswap16.x"