gcc/testsuite/gcc.dg/tree-ssa/pr23294.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-vars" } */
   3
   4 int f1(int a)
   5 {
   6   return a*6-a;
   7 }
   8
   9 int f2(int a)
  10 {
  11   return a*4+a;
  12 }
  13
  14 int f3(int a)
  15 {
  16   return 2*a + 3*a;
  17 }
  18
  19 int f4(int a, int b)
  20 {
  21   return 2*a + 6*b;
  22 }
  23
  24 int f5(int a, int b)
  25 {
  26   return 2*a - 6*b;
  27 }
  28
  29 int f6(int a, int b)
  30 {
  31   return 6*a - 2*b;
  32 }
  33
  34 /* { dg-final { scan-tree-dump-times "a \\\* 5" 3 "vars" } } */
  35 /* { dg-final { scan-tree-dump "\\\(b \\\* 3 \\\+ a\\\) \\\* 2" "vars" } } */
  36 /* { dg-final { scan-tree-dump "\\\(a - b \\\* 3\\\) \\\* 2" "vars" } } */
  37 /* { dg-final { scan-tree-dump "\\\(a \\\* 3 - b\\\) \\\* 2" "vars" } } */
  38 /* { dg-final { cleanup-tree-dump "vars" } } */