[Bug debug/52001] [4.7 Regression] Huge compile-time regression with var-tracking

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52001

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-27 
09:26:53 UTC ---
Author: jakub
Date: Fri Jan 27 09:26:48 2012
New Revision: 183608

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183608
Log:
    PR debug/52001
    * var-tracking.c (reverse_op): Don't add any reverse operation
    if V already has any constant locations.

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