gcc/testsuite/gcc.dg/builtin-bswap-1.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target stdint_types } */
   3 /* { dg-options "" } */
   4 /* { dg-final { scan-assembler-not "__builtin_" } } */
   5
   6 #include <stdint.h>
   7
   8 uint16_t foo16 (uint16_t a)
   9 {
  10   uint16_t b;
  11
  12   b = __builtin_bswap16 (a);
  13
  14   return b;
  15 }
  16
  17 uint32_t foo32 (uint32_t a)
  18 {
  19   uint32_t b;
  20
  21   b = __builtin_bswap32 (a);
  22
  23   return b;
  24 }
  25
  26 uint64_t foo64 (uint64_t a)
  27 {
  28   uint64_t b;
  29
  30   b = __builtin_bswap64 (a);
  31
  32   return b;
  33 }