[Bug target/59787] New: [ARM] mmx-2.c causes ICE when GCC is configured for cortex-a5/vfpv3-d16-fp16

[Bug target/59787] New: [ARM] mmx-2.c causes ICE when GCC is configured for cortex-a5/vfpv3-d16-fp16

[christophe.lyon at st dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59787

            Bug ID: 59787
           Summary: [ARM] mmx-2.c causes ICE when GCC is configured for
                    cortex-a5/vfpv3-d16-fp16
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: christophe.lyon at st dot com

I've noticed that gcc.target/arm/mmx-2 causes GCC to crash when GCC is
configured as:
--target=arm-none-linux-gnueabihf
--with-cpu=cortex-a5
--with-fpu=vfpv3-d16-fp16

testsuite/gcc.target/arm/mmx-2.c:166:1: internal compiler error: Max. number of
generated reload insns per insn is achieved (90)

0x9a5a32 lra_constraints(bool)
        /aci-gcc-fsf/sources/gcc-fsf/trunk/gcc/lra-constraints.c:4017
0x98e1f2 lra(_IO_FILE*)
        /aci-gcc-fsf/sources/gcc-fsf/trunk/gcc/lra.c:2339
0x9322b7 do_reload
        /aci-gcc-fsf/sources/gcc-fsf/trunk/gcc/ira.c:5455
0x932496 rest_of_handle_reload
        /aci-gcc-fsf/sources/gcc-fsf/trunk/gcc/ira.c:5584
0x9324ae execute
        /aci-gcc-fsf/sources/gcc-fsf/trunk/gcc/ira.c:5613

[Bug target/59787] [ARM] mmx-2.c causes ICE when GCC is configured for cortex-a5/vfpv3-d16-fp16

[renlin.li at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59787

Renlin Li <renlin.li at arm dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |renlin.li at arm dot com,
                   |                            |yufeng at gcc dot gnu.org

--- Comment #1 from Renlin Li <renlin.li at arm dot com> ---
Confirm that, gcc.target/arm/mmx-2.c cause an ICE with the following
configuration.
--target=arm-none-linux-gnueabihf
--with-arch=armv7-a
--with-fpu=vfpv3-d16
--with-float=softfp


(insn 51 50 52 2 (set (reg:DI 534 [orig:139 D.4720 ] [139])
        (mem/v/c:DI (plus:SI (reg/f:SI 102 sfp)
                (const_int -20 [0xffffffffffffffec])) [0 llsink+0 S8 A64]))
mmx-2.c:4
2 447 {*iwmmxt_arm_movdi}
     (nil))

(insn 573 0 0 (set (reg:DI 139 [ D.4720 ])
        (reg:DI 534 [orig:139 D.4720 ] [139])) -1
     (nil))

lra_constraints() keeps reloading <reg 139> until Max. number of reload insns
is reached.

[Bug target/59787] [ARM] mmx-2.c causes ICE when GCC is configured for cortex-a5/vfpv3-d16-fp16

[vmakarov at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59787

--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Tue Jan 14 19:07:01 2014
New Revision: 206605

URL: http://gcc.gnu.org/viewcvs?rev=206605&root=gcc&view=rev
Log:
2014-01-14  Vladimir Makarov  <vmakarov@redhat.com>

    PR target/59787
    * config/arm/arm.c (arm_coproc_mem_operand): Add lra_in_progress.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arm/arm.c

[Bug target/59787] [ARM] mmx-2.c causes ICE when GCC is configured for cortex-a5/vfpv3-d16-fp16

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59787

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |arm

--- Comment #4 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Is this fixed now?

[Bug target/59787] [ARM] mmx-2.c causes ICE when GCC is configured for cortex-a5/vfpv3-d16-fp16

[renlin.li at arm dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59787

--- Comment #5 from Renlin Li <renlin.li at arm dot com> ---
(In reply to Richard Earnshaw from comment #4)
> Is this fixed now?

Yes, and the patch has already been committed

[Bug target/59787] [ARM] mmx-2.c causes ICE when GCC is configured for cortex-a5/vfpv3-d16-fp16

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59787

Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |4.9.0

--- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
fixed