[Bug middle-end/41264] [4.5 Regression] variable-tracking unbelievably slow

[matz at gcc dot gnu dot org]

------- Comment #3 from matz at gcc dot gnu dot org  2009-10-03 22:49 -------
Found a nice testcase for exponential explosion.  It's reduced from tree.c
(make_vector_type) when building with -fprofile-generate.  The testcase needs
simply "-O2 -g" and takes a ridiculous amount of > 4GB RAM.
It's the tree-ssa-sink pass that triggers this in this case (with slight
variations in the testcase I can also make it blow up in RTL fwprop).

This means btw. that profiledbootstrap is broken.


-- 

matz at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |matz at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-10-03 22:49:10
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41264