[Bug rtl-optimization/69886] ICE: in process_insert_insn, at gcse.c:1976 with --param=gcse-unrestricted-cost=0 @ aarch64

["ktkachov at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69886

--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Wed Feb 24 13:00:10 2016
New Revision: 233662

URL: https://gcc.gnu.org/viewcvs?rev=233662&root=gcc&view=rev
Log:
[gcse] PR rtl-optimization/69886: Check target mode in
can_assign_to_reg_without_clobbers_p

        PR rtl-optimization/69886
        * gcse.c (can_assign_to_reg_without_clobbers_p): Accept mode
        argument.  Use it when checking validity of set instructions.
        (want_to_gcse_p): Pass mode to can_assign_to_reg_without_clobbers_p.
        (compute_ld_motion_mems): Update can_assign_to_reg_without_clobbers_p
        callsite.
        * rtl.h (can_assign_to_reg_without_clobbers_p): Update prototype.
        * store-motion.c (find_moveable_store): Update
        can_assign_to_reg_without_clobbers_p callsite.

        * gcc.dg/torture/pr69886.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr69886.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gcse.c
    trunk/gcc/rtl.h
    trunk/gcc/store-motion.c
    trunk/gcc/testsuite/ChangeLog