gcc/testsuite/gcc.target/s390/bswaphi-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -march=z900 -mzarch" } */
   3
   4 #include <stdint.h>
   5
   6 uint16_t u16;
   7
   8 uint16_t
   9 foo16a (uint16_t a)
  10 {
  11   return __builtin_bswap16 (a);
  12 }
  13 /* { dg-final { scan-assembler-times "lrvr\t%r2,%r\[0-9\]*" 1 } } */
  14
  15 uint16_t
  16 foo16b ()
  17 {
  18   return __builtin_bswap16 (u16);
  19 }
  20 /* { dg-final { scan-assembler-times "lrvh\t%r2,0\\(%r\[0-9\]*\\)" 1 } } */
  21
  22 void
  23 foo16c (uint16_t a)
  24 {
  25   u16 = __builtin_bswap16 (a);
  26 }
  27 /* { dg-final { scan-assembler-times "strvh\t%r2,0\\(%r\[0-9\]*\\)" 1 } } */