[Bug debug/46375] [4.6 Regression] -fcompare-debug failure (length) with -O -fgcse -fno-tree-dominator-opts

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46375

--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-11-11 
15:56:09 UTC ---
This patchlet is sufficient but I wonder how it will fare...

Index: emit-rtl.c
===================================================================
--- emit-rtl.c  (revision 166490)
+++ emit-rtl.c  (working copy)
@@ -3867,7 +3867,7 @@ remove_insn (rtx insn)
   if (!BARRIER_P (insn)
       && (bb = BLOCK_FOR_INSN (insn)))
     {
-      if (INSN_P (insn))
+      if (NONDEBUG_INSN_P (insn))
        df_set_bb_dirty (bb);
       if (BB_HEAD (bb) == insn)
        {