[Bug rtl-optimization/56117] [4.8 Regression] ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch()

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56117

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-01-28 16:50:39 UTC ---
Author: jakub
Date: Mon Jan 28 16:50:22 2013
New Revision: 195513

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195513
Log:
    PR rtl-optimization/56117
    * sched-deps.c (sched_analyze_2) <case PREFETCH>: For use_cselib
    call cselib_lookup_from_insn on the MEM before calling
    add_insn_mem_dependence.

    * gcc.dg/pr56117.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr56117.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/sched-deps.c
    trunk/gcc/testsuite/ChangeLog