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 uint32_t foo (uint32_t a)
   9 {
  10   int b;
  11
  12   b = __builtin_bswap32 (a);
  13
  14   return b;
  15 }