gcc/testsuite/gcc.dg/builtin-bswap-6.c

   1 /* { dg-do compile { target arm*-*-* alpha*-*-* i?86-*-* powerpc*-*-* rs6000-*-* x86_64-*-* s390*-*-* } } */
   2 /* { dg-require-effective-target stdint_types } */
   3 /* { dg-options "-O -fdump-rtl-combine" } */
   4
   5 /* The branch cost setting prevents the return value from being
   6    calculated with arithmetic instead of doing a compare.  */
   7 /* { dg-additional-options "-march=z900 -mbranch-cost=0" { target s390*-*-* } } */
   8
   9 #include <stdint.h>
  10
  11 #define BS(X) __builtin_bswap32(X)
  12
  13 int foo1 (uint32_t a)
  14 {
  15   if (BS (a) == 0xA0000)
  16     return 1;
  17   return 0;
  18 }
  19
  20 int foo2 (uint32_t a)
  21 {
  22   if (BS (a) != 0xA0000)
  23     return 1;
  24   return 0;
  25 }
  26
  27 int foo3 (uint32_t a, uint32_t b)
  28 {
  29   if (BS (a) == BS (b))
  30     return 1;
  31   return 0;
  32 }
  33
  34 int foo4 (uint32_t a, uint32_t b)
  35 {
  36   if (BS (a) != BS (b))
  37     return 1;
  38   return 0;
  39 }
  40
  41 /* { dg-final { scan-rtl-dump-not "bswapsi" "combine" } } */
  42 /* { dg-final { cleanup-rtl-dump "combine" } } */