gcc/testsuite/gcc.c-torture/compile/20020604-1.c

   1 /* The array is too big. */
   2 /* { dg-xfail-if "The array too big" { "h8300-*-*" } { "-mno-h" "-mn" } { "" } } */
   3 /* { dg-do assemble { xfail m6811-*-* m6812-*-* } } */
   4
   5 /* PR c/6957
   6    This testcase ICEd at -O2 on IA-32, because
   7    (insn 141 139 142 (set (subreg:SF (reg:QI 72) 0)
   8            (plus:SF (reg:SF 73)
   9                (reg:SF 76))) 525 {*fop_sf_comm_nosse} (insn_list 134 (nil))
  10        (expr_list:REG_DEAD (reg:SF 73) (nil)))
  11    couldn't be reloaded. */
  12
  13 void
  14 foo (unsigned int n, int x, int y, unsigned char *z)
  15 {
  16   int a, b;
  17   float c[2048][4];
  18
  19   switch (x)
  20     {
  21     case 0x1906:
  22       a = b = -1;
  23       break;
  24     case 0x190A:
  25       a = b = -1;
  26       break;
  27     case 0x8049:
  28       a = b = -1;
  29       break;
  30     case 0x1907:
  31       a = 1;
  32       b = 2;
  33       break;
  34     default:
  35       return;
  36     }
  37
  38   if (a >= 0)
  39     {
  40       unsigned char *d = z;
  41       unsigned int i;
  42       for (i = 0; i < n; i++)
  43         {
  44           do
  45             {
  46               union
  47               {
  48                 float r;
  49                 unsigned int i;
  50               }
  51               e;
  52               e.r = c[i][1];
  53               d[a] =
  54                 ((e.i >= 0x3f7f0000) ? ((int) e.i <
  55                                             0) ? (unsigned char) 0
  56                  : (unsigned char) 255 : (e.r =
  57                                           e.r * (255.0F / 256.0F) +
  58                                           32768.0F, (unsigned char) e.i));
  59             }
  60           while (0);
  61           d += y;
  62         }
  63     }
  64
  65   if (b >= 0)
  66     {
  67       unsigned char *d = z;
  68       unsigned int i;
  69       for (i = 0; i < n; i++)
  70         {
  71           do
  72             {
  73               union
  74               {
  75                 float r;
  76                 unsigned int i;
  77               }
  78               e;
  79               e.r = c[i][2];
  80               d[b] =
  81                 ((e.i >= 0x3f7f0000) ? ((int) e.i <
  82                                             0) ? (unsigned char) 0
  83                  : (unsigned char) 255 : (e.r =
  84                                           e.r * (255.0F / 256.0F) +
  85                                           32768.0F, (unsigned char) e.i));
  86             }
  87           while (0);
  88           d += y;
  89         }
  90     }
  91 }