gcc/testsuite/gcc.dg/tree-ssa/phi-opt-same-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-phiopt1 -fdump-tree-optimized" } */
   3 /* PR tree-optimization/19832 */
   4
   5 static inline int max_(int a, int b)
   6 {
   7   if (a > b) return a;
   8   return b;
   9 }
  10 static inline int min_(int a, int b)
  11 {
  12   if (a < b) return a;
  13   return b;
  14 }
  15
  16 int f_minus(int a, int b)
  17 {
  18   if (a != b) return a - b;
  19   return a - a;
  20 }
  21 int f_xor(int a, int b)
  22 {
  23   if (a != b) return a ^ b;
  24   return a ^ a;
  25 }
  26
  27 int f_ior(int a, int b)
  28 {
  29   if (a != b) return a | b;
  30   return a | a;
  31 }
  32 int f_and(int a, int b)
  33 {
  34   if (a != b) return a & b;
  35   return a & a;
  36 }
  37 int f_max(int a, int b)
  38 {
  39   if (a != b) return max_(a,b);
  40   return max_(a,a);
  41 }
  42 int f_min(int a, int b)
  43 {
  44   if (a != b) return min_(a,b);
  45   return min_(a,a);
  46 }
  47 int f_mult(int a, int b)
  48 {
  49   if (a != b) return a * b;
  50   return a * a;
  51 }
  52 int f_plus(int a, int b)
  53 {
  54   if (a != b) return a + b;
  55   return a + a;
  56 }
  57
  58 /* All of the above function's if should have been optimized away even in phiopt1. */
  59 /* { dg-final { scan-tree-dump-not "if " "phiopt1" } } */
  60 /* { dg-final { scan-tree-dump-not "if " "optimized" } } */