[Bug tree-optimization/17528] [4.0 Regression] tree optimization incorrectly optimizes away entire function (incorrect aliasing detection?)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-09-16 22:10 -------
hmm, DCE is removing a COND_EXPR and some BB for some reason:
  if (D.19406_5 != 0B) goto <L0>; else goto <L2>;

I cannot figure out why yet.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |critical
            Summary|tree optimization           |[4.0 Regression] tree
                   |incorrectly optimizes away  |optimization incorrectly
                   |entire function (incorrect  |optimizes away entire
                   |aliasing detection?)        |function (incorrect aliasing
                   |                            |detection?)
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17528