[Bug tree-optimization/26304] [4.2 Regression] 25_algorithms/prev_permutation/1.cc on powerpc{64,}-linux and powerpc-darwin

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-02-15 15:18 -------
-O2 -fno-tree-vrp cures the wrong code which either means VRP is messing up or
some other pass is messing up after VRP.  Though I should note:
-  ivtmp.209 = ivtmp.209 - 1;
+  ivtmp.211 = ivtmp.211 - 1;
   ivtmp.214 = ivtmp.214 + 4B;
-  goto <bb 11> (<L22>);
+  if (ivtmp.211 != 4294967295) goto <L9>; else goto <L13>;

Which looks more like VRP messing up.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |law at gcc dot gnu dot org
          Component|target                      |tree-optimization


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26304