gcc/testsuite/gcc.dg/tree-ssa/pr35286.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fno-code-hoisting -fno-tree-cselim -fdump-tree-pre-stats" } */
   3 int g2;
   4 struct A {
   5     int a; int b;
   6 }g1;
   7 int foo(int a, int b)
   8 {
   9   if (a > 0)
  10     {
  11       g1.a = a+ b;
  12     }
  13   else
  14     g1.a = b;
  15
  16   g2 = a+b;
  17
  18   return g1.a;
  19 }
  20 /* We will eliminate the g1.a from the return statement as fully redundant,
  21    and remove one calculation of a + b. */
  22 /* { dg-final { scan-tree-dump-times "Eliminated: 2" 1 "pre"} } */