gcc/testsuite/gcc.dg/tree-ssa/muldiv-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O3 -fdump-tree-optimized-raw" } */
   3
   4 // ldist produces (((q-p-4)/4)&...+1)*4
   5 // Make sure we remove at least the division
   6 // Eventually this should just be n*4
   7
   8 void foo(int*p, __SIZE_TYPE__ n){
   9   for(int*q=p+n;p!=q;++p)*p=0;
  10 }
  11
  12 /* { dg-final { scan-tree-dump "builtin_memset" "optimized" } } */
  13 /* { dg-final { scan-tree-dump-not "div" "optimized" } } */