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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fno-tree-sra -fdump-tree-fre1-details" } */
   3
   4 union U {
   5   float f;
   6   int i;
   7 };
   8
   9 int foo (union U *p)
  10 {
  11   union U u;
  12   p->f = 0.0;
  13   u = *p;
  14   return u.i;
  15 }
  16
  17 /* avr has 16 bit int and 32 bit float */
  18 /* { dg-final { scan-tree-dump "Replaced u.i with 0 in" "fre1" {xfail avr-*-* } } } */