gcc/testsuite/gcc.dg/pr38245-2.c

   1 /* PR rtl-optimization/38245 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-optimized" } */
   4
   5 extern void link_error (void);
   6
   7 void
   8 f1 (unsigned int a)
   9 {
  10   if (a != 28)
  11     {
  12       if (4 / a == 5)
  13         link_error ();
  14     }
  15 }
  16
  17 void
  18 f2 (unsigned int a)
  19 {
  20   if (4 / a == 5)
  21     link_error ();
  22 }
  23
  24 void
  25 f3 (unsigned int a)
  26 {
  27   if (4 / (a & 0xff) == 5)
  28     link_error ();
  29 }
  30
  31 void
  32 f4 (unsigned int a, unsigned int b)
  33 {
  34   if ((b & 3) / ((a & 0xff) + 1) == 5)
  35     link_error ();
  36 }
  37
  38 void
  39 f5 (int a)
  40 {
  41   if (a != 28)
  42     {
  43       if (4 / a == 5)
  44         link_error ();
  45     }
  46 }
  47
  48 void
  49 f6 (int a)
  50 {
  51   if (4 / a == 5)
  52     link_error ();
  53 }
  54
  55 void
  56 f7 (int a)
  57 {
  58   if (4 / (a & 0xff) == 5)
  59     link_error ();
  60 }
  61
  62 void
  63 f8 (int a, int b)
  64 {
  65   if ((b & 3) / ((a & 0xff) + 1) == 5)
  66     link_error ();
  67 }
  68
  69 void
  70 f9 (int a, int b)
  71 {
  72   if (b >= 4)
  73     if ((a / b) == __INT_MAX__ / 2)
  74       link_error ();
  75 }
  76
  77 void
  78 f10 (unsigned int a, unsigned int b)
  79 {
  80   if (b >= 16)
  81     if ((a / b) == __INT_MAX__ / 4)
  82       link_error ();
  83 }
  84
  85 void
  86 f11 (int a, int b)
  87 {
  88   if (b <= -32)
  89     if ((a / b) == -__INT_MAX__ / 16)
  90       link_error ();
  91 }
  92
  93 void
  94 f12 (int a, int b)
  95 {
  96   if (a >= -6 && a <= 4)
  97     if ((a / b) == -7 || (a / b) == 7)
  98       link_error ();
  99 }
 100
 101 void
 102 f13 (unsigned int a, unsigned int b)
 103 {
 104   if (a <= 4)
 105     if ((a / b) == 5)
 106       link_error ();
 107 }
 108
 109 /* { dg-final { scan-tree-dump-not "link_error" "optimized" } } */