[Bug optimization/13799] [tree-ssa] consecutive stores to static vars not removed

[law at gcc dot gnu dot org]

------- Additional Comments From law at gcc dot gnu dot org  2004-02-16 22:05 -------
Totally eliminating local1 is for real world code a waste of time -- what would be
the point in having the static variable if it was always set before it was used.

While it would be possible to detect that local1 is 100% totally useless, it's
simply not work the programming effort or compile-time cost.

Now it certainly is worth the cost to eliminate the clearly dead "local1 = 0"
statement as well as the "local2 += c" statement, which is precisely what the
DSE code I checked in earlier today does.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13799