[Bug debug/47684] -fcompare-debug failure with -O3

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47684

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-02-11 
14:24:30 UTC ---
Author: jakub
Date: Fri Feb 11 14:24:26 2011
New Revision: 170051

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170051
Log:
    PR debug/47684
    * tree-predcom.c (single_nonlooparound_use): Ignore debug uses.

    * gcc.dg/pr47684.c: New test.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog