[Bug target/65510] target-tic6x: unrecognizable insn with -O(1,2,3,s).

[gang.chen.5i5j at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65510

--- Comment #5 from Chen Gang <gang.chen.5i5j at gmail dot com> ---
After remove clobber (match_scratch ...), it will generate the correct assembly
code (I guess it is):

        .file   "test.i"
        .c6xabi_attribute Tag_ABI_array_object_alignment, 0
        .c6xabi_attribute Tag_ABI_array_object_align_expected, 0
        .c6xabi_attribute Tag_ABI_stack_align_needed, 0
        .c6xabi_attribute Tag_ABI_stack_align_preserved, 0
        .c6xabi_attribute Tag_ABI_conformance, "1.0"
.text;
        .align  2
        .global oxu_driver_init
        .type   oxu_driver_init, @function
oxu_driver_init:
                mvk     .d1     11, A4
                ldnw    .d1t1   *A4, A3
                nop     4
                stnw    .d1t1   A3, *A4
                ret     .s2     B3
                nop     5
        .size   oxu_driver_init, .-oxu_driver_init
        .ident  "GCC: (GNU) 5.0.0 20150321 (experimental)"

And also can cross building Linux kernel with allmodconfig successfully.

I shall send patch for it, next.