[Bug rtl-optimization/64688] [4.9 Regression] internal compiler error: Max. number of generated reload insns per insn is achieved (90)

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64688

--- Comment #19 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Fri Mar 27 19:23:15 2015
New Revision: 221743

URL: https://gcc.gnu.org/viewcvs?rev=221743&root=gcc&view=rev
Log:
2015-03-27  Vladimir Makarov  <vmakarov@redhat.com>

    Backport from mainline
    2015-01-30  Vladimir Makarov  <vmakarov@redhat.com>

    PR target/64688
    * lra-constraints.c (original_subreg_reg_mode): New.
    (simplify_operand_subreg): Try to simplify subreg of const.  Use
    original_subreg_reg_mode for it.
    (swap_operands): Update original_subreg_reg_mode.
    (curr_insn_transform): Set up original_subreg_reg_mode.

2015-03-27  Vladimir Makarov  <vmakarov@redhat.com>

    Backport from mainline
    2015-01-30  Vladimir Makarov  <vmakarov@redhat.com>

    PR target/64688
    * g++.dg/pr64688-2.C: New.


Added:
    branches/gcc-4_9-branch/gcc/testsuite/g++.dg/pr64688-2.C
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/lra-constraints.c
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog