[Bug debug/54177] [4.8 Regression]: Segfault in cselib_lookup due to NULL_RTX passed from vt_add_function_parameter

[ubizjak at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54177

--- Comment #4 from Uros Bizjak <ubizjak at gmail dot com> 2012-08-07 21:07:53 UTC ---
Author: uros
Date: Tue Aug  7 20:57:56 2012
New Revision: 190212

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190212
Log:
    * var-tracking.c (var_lowpart): Exit early for matched modes.


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