gcc/testsuite/gcc.dg/fold-popcount-8a.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 int foo1(unsigned int x, unsigned int y)
   5 {
   6   int t = __builtin_popcount (x&y);
   7   int t1 = __builtin_popcount (x|y);
   8   return t + t1;
   9 }
  10
  11 int foo2(unsigned int x, unsigned int y)
  12 {
  13   int t1 = __builtin_popcount (x|y);
  14   int t = __builtin_popcount (x&y);
  15   return t + t1;
  16 }
  17
  18 int foo3(unsigned int y, unsigned int x)
  19 {
  20   int t = __builtin_popcount (x&y);
  21   int t1 = __builtin_popcount (x|y);
  22   return t + t1;
  23 }
  24
  25 int foo4(unsigned int y, unsigned int x)
  26 {
  27   int t1 = __builtin_popcount (x|y);
  28   int t = __builtin_popcount (x&y);
  29   return t + t1;
  30 }
  31
  32 /* { dg-final { scan-tree-dump-not " & " "optimized" } } */
  33 /* { dg-final { scan-tree-dump-not " \\| " "optimized" } } */