[Bug tree-optimization/27799] adding unused char field inhibits optimization

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2008-03-04 21:22 -------
Actually RTL alias is just using the same routines. The IL difference is

  # SMT.4_6 = VDEF <SMT.4_4(D)>
  # SMT.5_7 = VDEF <SMT.5_5(D)>
  x_1(D)->x = 0;
  # SMT.5_8 = VDEF <SMT.5_7>
  y_2(D)->y = 1;

vs.

  # SMT.18_5 = VDEF <SMT.18_4(D)>
  x_1(D)->x = 0;
  # SMT.19_7 = VDEF <SMT.19_6(D)>
  y_2(D)->y = 1;


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27799