gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-11.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3
   4 /* Test for CPROP across a DAG. */
   5
   6 int test111 (int param)
   7 {
   8   int a, b, c;
   9   if (param) {
  10     a = 3;
  11     b = 2;
  12   }
  13   else {
  14     a = 2;
  15     b = 3;
  16   }
  17   c = a + b;
  18   if (c != 5)
  19     return 2;
  20   return 0;
  21 }
  22
  23 int test1111 (int param)
  24 {
  25   _Bool a, b, c;
  26   if (param) {
  27     a = 1;
  28     b = 0;
  29   }
  30   else {
  31     a = 0;
  32     b = 1;
  33   }
  34   c = a && b;
  35   if (c)
  36     return 2;
  37   return 0;
  38 }
  39
  40 /* All ifs should be eliminated. */
  41 /* { dg-final { scan-tree-dump-times "if " 0 "optimized" } } */
  42 /* { dg-final { cleanup-tree-dump "optimized" } } */