gcc/testsuite/gcc.dg/tree-ssa/minmax-26.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized -fdump-tree-original" } */
   3 /* PR tree-optimization/111348 */
   4
   5 int test1(int a, int b, int c)
   6 {
   7         return (a > b) ? ((a > c) ? a : c) : ((b > c) ? b : c);
   8 }
   9
  10
  11 int test1_(int a, int b, int c)
  12 {
  13         return (b < a) ? ((a > c) ? a : c) : ((b > c) ? b : c);
  14 }
  15
  16 /* test1 and test1_ should be able to optimize to `MAX_EXPR <MAX_EXPR <a, b>, c>;` during fold.  */
  17 /* { dg-final { scan-tree-dump-times "MAX_EXPR <MAX_EXPR <a, b>, c>" 2 "original" } } */
  18 /* { dg-final { scan-tree-dump-not "b > a" "original" } } */
  19 /* { dg-final { scan-tree-dump-not "a > b" "original" } } */
  20 /* { dg-final { scan-tree-dump-times "MAX_EXPR " 4 "optimized" } } */
  21 /* { dg-final { scan-tree-dump-not "if " "optimized" } } */
  22