[Bug rtl-optimization/59890] var-tracking.c:val_reset segfaults

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59890

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jan 28 13:13:54 2014
New Revision: 207182

URL: http://gcc.gnu.org/viewcvs?rev=207182&root=gcc&view=rev
Log:
2014-01-28  Richard Biener  <rguenther@suse.de>

    Revert
    2014-01-28  Richard Biener  <rguenther@suse.de>

    PR rtl-optimization/45364
    PR rtl-optimization/59890
    * var-tracking.c (local_get_addr_clear_given_value): Handle
    already cleared slot.
    (val_reset): Handle not allocated local_get_addr_cache.
    (vt_find_locations): Use post-order on the inverted CFG.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/var-tracking.c