[Bug rtl-optimization/49941] [4.7 Regression] segmentation fault in redirect_jump_2

[amodra at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49941

--- Comment #8 from Alan Modra <amodra at gcc dot gnu.org> 2011-08-03 11:48:24 UTC ---
Author: amodra
Date: Wed Aug  3 11:48:21 2011
New Revision: 177268

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177268
Log:
    PR rtl-optimization/49941
    * jump.c (mark_jump_label): Comment.
    (mark_jump_label_1): Set JUMP_LABEL for return jumps.
    * emit-rtl.c (copy_rtx_if_shared_1, copy_insn_1): Leave RETURN shared.
    (mark_used_flags): Don't mark RETURN.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/emit-rtl.c
    trunk/gcc/jump.c