gcc/testsuite/gcc.dg/loop-3.c

   1 /* PR optimization/13985 */
   2 /* Copied from gcc.c-torture/compile/930621-1.c */
   3
   4 /* { dg-do compile } */
   5 /* { dg-options "-O3" } */
   6 /* { dg-options "-O3 -mtune=i386" { target i?86-*-* } } */
   7
   8 #if defined(STACK_SIZE) && (STACK_SIZE < 65536)
   9 # define BYTEMEM_SIZE 10000L
  10 #endif
  11
  12 #ifndef BYTEMEM_SIZE
  13 # define BYTEMEM_SIZE 45000L
  14 #endif
  15
  16 int bytestart[5000 + 1];
  17 unsigned char modtext[400 + 1];
  18 unsigned char bytemem[2][BYTEMEM_SIZE + 1];
  19
  20 long
  21 modlookup (int l)
  22 {
  23   signed char c;
  24   long j;
  25   long k;
  26   signed char w;
  27   long p;
  28   while (p != 0)
  29     {
  30       while ((k < bytestart[p + 2]) && (j <= l) && (modtext[j] == bytemem[w][k]))
  31         {
  32           k = k + 1;
  33           j = j + 1;
  34         }
  35       if (k == bytestart[p + 2])
  36         if (j > l)
  37           c = 1;
  38         else c = 4;
  39       else if (j > l)
  40         c = 3;
  41       else if (modtext[j] < bytemem[w][k])
  42         c = 0;
  43       else c = 2;
  44     }
  45 }