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References: <bug-27799-1008@http.gcc.gnu.org/bugzilla/>
Subject: [Bug tree-optimization/27799] adding unused char field inhibits optimization
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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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------- 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;


-- 


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