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

   1 /* PR middle-end/29749 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-original" } */
   4
   5 #if __SCHAR_MAX__ == 127
   6
   7 unsigned char
   8 e1 (unsigned char a)
   9 {
  10   return a >> 5 | a << 3;
  11 }
  12
  13 unsigned char
  14 e2 (unsigned char a)
  15 {
  16   return (a & 0xe0) >> 5 | (a & 0x1f) << 3;
  17 }
  18
  19 unsigned char
  20 e3 (unsigned char a)
  21 {
  22   return ((a >> 5) & 0x07) | ((a << 3) & 0xf8);
  23 }
  24
  25 #endif
  26
  27 #if __SHRT_MAX__ == 32767
  28
  29 unsigned short
  30 f1 (unsigned short a)
  31 {
  32   return a >> 8 | a << 8;
  33 }
  34
  35 unsigned short
  36 f2 (unsigned short a)
  37 {
  38   return (a & 0xff00) >> 8 | (a & 0x00ff) << 8;
  39 }
  40
  41 unsigned short
  42 f3 (unsigned short a)
  43 {
  44   return ((a >> 8) & 0x00ff) | ((a << 8) & 0xff00);
  45 }
  46
  47 #endif
  48
  49 #if __INT_MAX__ == 2147483647
  50
  51 unsigned int
  52 g1 (unsigned int a)
  53 {
  54   return a >> 24 | a << 8;
  55 }
  56
  57 unsigned int
  58 g2 (unsigned int a)
  59 {
  60   return (a & 0xff000000) >> 24 | (a & 0x00ffffff) << 8;
  61 }
  62
  63 unsigned int
  64 g3 (unsigned int a)
  65 {
  66   return ((a >> 24) & 0x000000ff) | ((a << 8) & 0xffffff00U);
  67 }
  68
  69 #endif
  70
  71 int i;
  72
  73 /* { dg-final { scan-tree-dump-times "&" 0 "original" } } */
  74 /* { dg-final { cleanup-tree-dump "original" } } */