[Bug tree-optimization/29716] [4.2/4.3 Regression] Wrong code with arrays

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2006-11-04 22:10 -------
Starting with DOM we have

<bb 2>:
  #   SFT.3_3 = V_MUST_DEF <SFT.3_2>;
  a[0] = 0;
  #   SFT.2_5 = V_MUST_DEF <SFT.2_4>;
  a[1] = 1;
  #   SFT.1_7 = V_MUST_DEF <SFT.1_6>;
  a[2] = 2;

...

<L2>:;
  #   VUSE <SFT.2_5>;
  D.1621_14 = a[1];
  t.0_15 = t.0_11;
  D.1620_16 = t.0_15 + 1;
  if (D.1621_14 != D.1620_16) goto <L3>; else goto <L4>;

which is wrong.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29716