gcc/testsuite/gcc.target/mips/bswap-1.c

   1 /* { dg-options "isa_rev>=2" } */
   2 /* { dg-skip-if "bswap recognition needs expensive optimizations" { *-*-* } { "-O0" "-O1" } { "" } } */
   3
   4 NOMIPS16 unsigned short
   5 foo (unsigned short x)
   6 {
   7   return ((x << 8) & 0xff00) | ((x >> 8) & 0xff);
   8 }
   9
  10 /* { dg-final { scan-assembler "\twsbh\t" } } */