[Bug target/70083] [6 Regression] ICE: in assign_stack_local_1, at function.c:409 with -fschedule-insns -mavx512* @ i686

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70083

--- Comment #5 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Mon Mar 14 15:08:54 2016
New Revision: 234184

URL: https://gcc.gnu.org/viewcvs?rev=234184&root=gcc&view=rev
Log:
LRA: identify biggest access mode for hard_regs and use it in split_reg

        PR target/70083
        * lra-lives.c (process_bb_lives): Also update biggest mode for hard
        regs.
        (lra_create_live_ranges_1): initialize hard register biggest_mode to
        VOIDmode.
        * lra-constraints.c (split_reg): For hard regs, try to find the
        biggest single-register mode used in the function.

testsuite/
        PR target/70083
        * gcc.dg/torture/pr70083.c: New test.
        * gcc.target/i386/pr70083.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr70083.c
    trunk/gcc/testsuite/gcc.target/i386/pr70083.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/lra-constraints.c
    trunk/gcc/lra-lives.c
    trunk/gcc/testsuite/ChangeLog