[Bug rtl-optimization/47157] [4.6 Regression] ICE: in calc_dfs_tree, at dominance.c:395 with -O

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47157

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-03 
20:59:25 UTC ---
Author: jakub
Date: Mon Jan  3 20:59:20 2011
New Revision: 168439

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168439
Log:
    PR rtl-optimization/47157
    * combine.c (try_combine): If undobuf.other_insn becomes
    (set (pc) (pc)) jump, call update_cfg_for_uncondjump on it
    and set *new_direct_jump_p too.

    * gcc.c-torture/compile/pr47157.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr47157.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c
    trunk/gcc/testsuite/ChangeLog