gcc/testsuite/gcc.dg/tree-ssa/assoc-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-gimple-raw -fdump-tree-optimized-raw" } */
   3
   4 int f0(int a, int b){
   5   return a * 33 * b * 55;
   6 }
   7
   8 int f1(int a){
   9   a *= 33;
  10   return a * 55;
  11 }
  12
  13 int f2(int a, int b){
  14   a *= 33;
  15   return a * b * 55;
  16 }
  17
  18 /* { dg-final { scan-tree-dump-times "mult_expr" 7 "gimple" } } */
  19 /* { dg-final { scan-tree-dump-times "mult_expr" 5 "optimized" } } */