[Bug rtl-optimization/66626] [4.9/5/6 Regression] gcc.dg/torture/stackalign/non-local-goto-5.c segfaults w/ -mregparm=3 or -miamcu

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66626

--- Comment #23 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Thu Jul 16 15:26:35 2015
New Revision: 225891

URL: https://gcc.gnu.org/viewcvs?rev=225891&root=gcc&view=rev
Log:
2015-07-16  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/66626
        * ira.h (emit-rtl.h): Include.
        (non_spilled_static_chain_regno_p): New.
        * ira-color.c (setup_profitable_hard_regs): Clear profitable regs
        unless it is non spilled static chain pseudo.
        (assign_hard_rego): Spill memory profitable allocno unless it is
        non spilled static chain pseudo.
        (allocno_spill_priority_compare): Put non spilled static chain
        pseudo at the end of sorted array.
        (improve_allocation): Do nothing if we have static chain and
        non-local goto.
        (allocno__priority_compare_func): Put non spilled static chain
        pseudo at the beginning of sorted array.
        (move_spill_restore): Ignore non spilled static chain pseudo.
        * ira-costs.c (find_costs_and_classes): Don't assign class NO_REGS
        to non spilled static chain pseudo.
        * lra-assigns.c (pseudo_compare_func): Put non spilled static chain
        pseudo at the beginning of sorted array.
        (spill_for): Spill non spilled static chain pseudo last.
        * lra-constraints.c (lra_constraints): Remove static chain pseudo
        check for equivalence.

2015-07-16  Vladimir Makarov  <vmakarov@redhat.com>

        PR rtl-optimization/66626
        * gcc.target/i386/pr66626-2.c: New.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr66626-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ira-color.c
    trunk/gcc/ira-costs.c
    trunk/gcc/ira.h
    trunk/gcc/lra-assigns.c
    trunk/gcc/lra-constraints.c
    trunk/gcc/testsuite/ChangeLog