gcc/testsuite/gcc.dg/pr21643.c

   1 /* PR tree-optimization/21643 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-reassoc1-details" } */
   4
   5 int
   6 f1 (unsigned char c)
   7 {
   8   if (c == 0x22 || c == 0x20 || c < 0x20)
   9     return 1;
  10   return 0;
  11 }
  12
  13 int
  14 f2 (unsigned char c)
  15 {
  16   if (c == 0x22 || c <= 0x20)
  17     return 1;
  18   return 0;
  19 }
  20
  21 int
  22 f3 (unsigned char c)
  23 {
  24   if (c == 0x22)
  25     return 1;
  26   if (c == 0x20)
  27     return 1;
  28   if (c < 0x20)
  29     return 1;
  30   return 0;
  31 }
  32
  33 int
  34 f4 (unsigned char c)
  35 {
  36   if (c == 0x22 || c == 0x20 || c < 0x20)
  37     return 2;
  38   return 0;
  39 }
  40
  41 int
  42 f5 (unsigned char c)
  43 {
  44   if (c == 0x22 || c <= 0x20)
  45     return 2;
  46   return 0;
  47 }
  48
  49 int
  50 f6 (unsigned char c)
  51 {
  52   if (c == 0x22)
  53     return 2;
  54   if (c == 0x20)
  55     return 2;
  56   if (c < 0x20)
  57     return 2;
  58   return 0;
  59 }
  60
  61 int
  62 f7 (unsigned char c)
  63 {
  64   if (c != 0x22 && c != 0x20 && c >= 0x20)
  65     return 0;
  66   return 1;
  67 }
  68
  69 int
  70 f8 (unsigned char c)
  71 {
  72   if (c == 0x22 && c <= 0x20)
  73     return 0;
  74   return 1;
  75 }
  76
  77 int
  78 f9 (unsigned char c)
  79 {
  80   if (c == 0x22)
  81     return 0;
  82   if (c == 0x20)
  83     return 0;
  84   if (c < 0x20)
  85     return 0;
  86   return 1;
  87 }
  88
  89 /* { dg-final { scan-tree-dump-times "Optimizing range tests c_\[0-9\]*.D. -.0, 31. and -.32, 32.\[\n\r\]* into" 6 "reassoc1" } } */