[Bug debug/52048] [4.7 Regression] -fcompare-debug failure with -O2 -fcompare-debug -fnon-call-exceptions -fno-tree-dominator-opts

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52048

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-30 
13:47:42 UTC ---
Author: jakub
Date: Mon Jan 30 13:47:38 2012
New Revision: 183723

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183723
Log:
    PR debug/52048
    * tree-ssa-tail-merge.c (local_def): Ignore debug uses.

    * g++.dg/other/pr52048.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/other/pr52048.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-tail-merge.c