[Bug debug/47881] [4.6 Regression] -fcompare-debug failure (length) with -O -fno-dce -funroll-loops -fno-web

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47881

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-08 
15:51:18 UTC ---
Author: jakub
Date: Tue Mar  8 15:51:12 2011
New Revision: 170780

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170780
Log:
    PR debug/47881
    * ira.c (ira): Call df_analyze again if delete_trivially_dead_insns
    removed anything.

    * gcc.dg/pr47881.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr47881.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cp/ChangeLog
    trunk/gcc/ira.c
    trunk/gcc/testsuite/ChangeLog