[Bug target/56979] New: ICE in output_operand: invalid operand for code 'P'

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56979

             Bug #: 56979
           Summary: ICE in output_operand: invalid operand for code 'P'
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: mgretton@gcc.gnu.org


Created attachment 29882
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29882
Reduced testcase

The attached testcase causes the following ICE when compiled as shown:

$ arm-none-linux-gnueabi-g++ -fsigned-char -march=armv7-a -mfloat-abi=hard
-mfpu=neon -ftree-vectorize -fPIC besttry.c
besttry.c: In function âfloat2 operator-(float, float2)â:
besttry.c:7:1: internal compiler error: output_operand: invalid operand for
code 'P'
 }
 ^
0x86acde output_operand_lossage(char const*, ...)
        /work/sources/gcc-fsf/master/gcc/final.c:3303
0xcdf7ba arm_print_operand
        /work/sources/gcc-fsf/master/gcc/config/arm/arm.c:18336
0x86ad2e output_operand(rtx_def*, int)
        /work/sources/gcc-fsf/master/gcc/final.c:3725
0x86b70b output_asm_insn
        /work/sources/gcc-fsf/master/gcc/final.c:3604
0x86b70b output_asm_insn(char const*, rtx_def**)
        /work/sources/gcc-fsf/master/gcc/final.c:3493
0xcd6864 output_move_vfp(rtx_def**)
        /work/sources/gcc-fsf/master/gcc/config/arm/arm.c:15383
0x86c6e8 final_scan_insn(rtx_def*, _IO_FILE*, int, int, int*)
        /work/sources/gcc-fsf/master/gcc/final.c:2853
0x86da15 final(rtx_def*, _IO_FILE*, int)
        /work/sources/gcc-fsf/master/gcc/final.c:1957
0x86de29 rest_of_handle_final
        /work/sources/gcc-fsf/master/gcc/final.c:4332

Issue also seen on 4.7, and 4.8.

arm-none-linux-g++ -v: 
Using built-in specs.
COLLECT_GCC=/work/builds/gcc-fsf-master/tools/bin/arm-none-linux-gnueabi-g++
COLLECT_LTO_WRAPPER=/work/builds/gcc-fsf-master/tools/libexec/gcc/arm-none-linux-gnueabi/4.9.0/lto-wrapper
Target: arm-none-linux-gnueabi
Configured with: /work/sources/gcc-fsf/master/configure
--target=arm-none-linux-gnueabi --prefix=/work/builds/gcc-fsf-master/tools
--with-sysroot=/work/builds/gcc-fsf-master/sysroot-arm-none-linux-gnueabi
--disable-libssp --disable-libgomp --disable-libmudflap
--enable-languages=c,c++ --with-arch=armv7-a --with-fpu=vfpv3-d16
--with-float=softfp --with-thumb : (reconfigured)
/work/sources/gcc-fsf/master/configure --target=arm-none-linux-gnueabi
--prefix=/work/builds/gcc-fsf-master/tools
--with-sysroot=/work/builds/gcc-fsf-master/sysroot-arm-none-linux-gnueabi
--disable-libssp --disable-libgomp --disable-libmudflap --with-arch=armv7-a
--with-fpu=vfpv3-d16 --with-float=softfp --with-thumb
target_alias=arm-none-linux-gnueabi CC=gcc --enable-languages=c,c++,lto
--no-create --no-recursion
Thread model: posix
gcc version 4.9.0 20130416 (experimental) (GCC)