[Bug tree-optimization/32919] [4.3 Regression] SSA corruption because of abnormal edges and PRE

Sat Jul 28 00:05:00 GMT 2007

------- Comment #1 from pinskia at gcc dot gnu dot org  2007-07-28 00:05 -------

Value numbering spec_28(ab) stmt = spec_28(ab) = PHI <spec_7(ab)(3)>
Setting value number of spec_28(ab) to spec_7(ab)

We should not value number this PHI node, yes it is a copy but a needed copy
for abnormal edges.

Note the reduced testcase is missing an optimization but that is already filed
as PR 32810.

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dberlin at gcc dot gnu dot
                   |                            |org
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |4.3.0

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32919