gcc/testsuite/gcc.dg/tree-ssa/complex-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-optimized" } */
   3
   4 typedef _Complex float COMPLEX_FLOAT;
   5 float real_part(COMPLEX_FLOAT a)
   6 {
   7   return *(float*)(&a);
   8 }
   9
  10 float real_part_2(COMPLEX_FLOAT a)
  11 {
  12   return ((float*)(&a))[0];
  13 }
  14
  15
  16 float imag_part(COMPLEX_FLOAT a)
  17 {
  18   return ((float*)(&a))[1];
  19 }
  20
  21 /* Test that the above gets optimized to REALPART_EXPR and IMAGPART_EXPR
  22    respectively. */
  23
  24 /* { dg-final { scan-tree-dump-times "REALPART_EXPR" 2 "optimized" } } */
  25 /* { dg-final { scan-tree-dump-times "IMAGPART_EXPR" 1 "optimized" } } */
  26