gcc/testsuite/gcc.dg/fold-eqbswap-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 int test1(int x, int y)
   5 {
   6 #if __SIZEOF_INT__ == 4
   7   return __builtin_bswap32(x) == __builtin_bswap32(y);
   8 #else
   9   return x == y;
  10 #endif
  11 }
  12
  13 int test2(int x, int y)
  14 {
  15 #if __SIZEOF_INT__ == 4
  16   return __builtin_bswap32(x) != __builtin_bswap32(y);
  17 #else
  18   return x != y;
  19 #endif
  20 }
  21
  22 int test3(int x)
  23 {
  24 #if __SIZEOF_INT__ == 4
  25   return __builtin_bswap32(x) == 12345;
  26 #else
  27   return x;
  28 #endif
  29 }
  30
  31 int test4(int x)
  32 {
  33 #if __SIZEOF_INT__ == 4
  34   return __builtin_bswap32(x) != 12345;
  35 #else
  36   return x;
  37 #endif
  38 }
  39
  40 int test1ll(long long x, long long y)
  41 {
  42 #if __SIZEOF_LONG_LONG__ == 8
  43   return __builtin_bswap64(x) == __builtin_bswap64(y);
  44 #else
  45   return x == y;
  46 #endif
  47 }
  48
  49 int test2ll(long long x, long long y)
  50 {
  51 #if __SIZEOF_LONG_LONG__ == 8
  52   return __builtin_bswap64(x) != __builtin_bswap64(y);
  53 #else
  54   return x != y;
  55 #endif
  56 }
  57
  58 int test3ll(long long x)
  59 {
  60 #if __SIZEOF_LONG_LONG__ == 8
  61   return __builtin_bswap64(x) == 12345;
  62 #else
  63   return (int)x;
  64 #endif
  65 }
  66
  67 int test4ll(long long x)
  68 {
  69 #if __SIZEOF_LONG_LONG__ == 8
  70   return __builtin_bswap64(x) != 12345;
  71 #else
  72   return (int)x;
  73 #endif
  74 }
  75
  76 int test1s(short x, short y)
  77 {
  78 #if __SIZEOF_SHORT__ == 2
  79   return __builtin_bswap16(x) == __builtin_bswap16(y);
  80 #else
  81   return x == y;
  82 #endif
  83 }
  84
  85 int test2s(short x, short y)
  86 {
  87 #if __SIZEOF_SHORT__ == 2
  88   return __builtin_bswap16(x) != __builtin_bswap16(y);
  89 #else
  90   return x != y;
  91 #endif
  92 }
  93
  94 int test3s(short x)
  95 {
  96 #if __SIZEOF_SHORT__ == 2
  97   return __builtin_bswap16(x) == 12345;
  98 #else
  99   return (int)x;
 100 #endif
 101 }
 102
 103 int test4s(short x)
 104 {
 105 #if __SIZEOF_SHORT__ == 2
 106   return __builtin_bswap16(x) != 12345;
 107 #else
 108   return (int)x;
 109 #endif
 110 }
 111
 112 /* { dg-final { scan-tree-dump-times "__builtin_bswap" 0 "optimized" } } */
 113