[Bug target/84876] [8 Regression] ICE on invalid code in lra_assign at gcc/lra-assigns.c:1601 since r258504

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84876

--- Comment #4 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Fri Mar 16 18:48:26 2018
New Revision: 258602

URL: https://gcc.gnu.org/viewcvs?rev=258602&root=gcc&view=rev
Log:
2018-03-16  Vladimir Makarov  <vmaka...@redhat.com>

        PR target/84876
        * lra-assigns.c (lra_split_hard_reg_for): Don't use
        regno_allocno_class_array and sorted_pseudos.
        * lra-constraints.c (spill_hard_reg_in_range): Ignore hard regs in
        insns where regno is used.

2018-03-16  Vladimir Makarov  <vmaka...@redhat.com>

        PR target/84876
        * gcc.target/i386/pr84876.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr84876.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-assigns.c
    trunk/gcc/lra-constraints.c
    trunk/gcc/testsuite/ChangeLog