> On 10 October 2014 16:19, Alan Hayward <alan.hayw...@arm.com> wrote:
> > This patch is dependant on "[AArch64] [BE] [1/2] Make large opaque
> > integer modes endianness-safe.”
> >
> > It fixes up movoi/ci/xi for Big Endian, so that we end up with the lsb
> > of a big-endian integer to be in the low byte of the highest-numbered
> > register.
> >
> > movoi uses stp/ldp
> > movxi needs a split version (which is shared with register->register
> > movxi), which just splits to two new movs movci can then split to
> > three movs. A future patch will instead split to an movoi and a movti.
> >
> >
> > There are no changes for LE.
> >
> > Ran whole of check with both parts of "Make large opaque integer modes
> > endianness-safe”. No regressions.
> >
> >
> > ChangeLog:
> >
> > gcc/:
> > 2014-10-10 Alan Hayward <alan.hayw...@arm.com>
> > * config/aarch64/aarch64.c
> > (aarch64_classify_address): Allow extra addressing modes for BE.
> > (aarch64_print_operand): new operand for printing a q register+1.
> > (aarch64_simd_emit_reg_reg_move): replacement for
> > aarch64_simd_disambiguate_copy that plants the required mov.
> > * config/aarch64/aarch64-protos.h
> > (aarch64_simd_emit_reg_reg_move): replacement for
> > aarch64_simd_disambiguate_copy.
> > * config/aarch64/aarch64-simd.md
> > (define_split) Use new aarch64_simd_emit_reg_reg_move.
> > (define_expand "mov<mode>") less restrictive predicates.
> > (define_insn "*aarch64_mov<mode>") Simplify and only allow for LE.
> > (define_insn "*aarch64_be_movoi") New. BE only. Plant ldp or
> stp.
> > (define_insn "*aarch64_be_movci") New. BE only. No
> instructions.
> > (define_insn "*aarch64_be_movxi") New. BE only. No
> instructions.
> > (define_split) OI mov. Use new
> aarch64_simd_emit_reg_reg_move.
> > (define_split) CI mov. Use new
> aarch64_simd_emit_reg_reg_move.
> > On BE
> > plant movs for reg to/from mem case.
> > (define_split) XI mov. Use new
> aarch64_simd_emit_reg_reg_move.
> > On BE
> > plant movs for reg to/from mem case.
> >
>
> OK /Marcus
Hello,
It seems that this patch breaks the compile of some testcases under
big-endian.
On example: testsuite/gcc.target/aarch64/advsimd-intrinsics/ vldX.c
Any thing I missed? Please confirm. Thanks.
$ aarch64_be-linux-gnu-gcc vldX.c
vldX.c: In function 'exec_vldX':
vldX.c:686:1: internal compiler error: in change_address_1, at emit-rtl.c:2096
}
^
0x73b18c change_address_1
/home/jjj/p660/p660_build_dir_be/src/trunk/gcc/emit-rtl.c:2096
0xdbd278 gen_split_2991(rtx_insn*, rtx_def**)
/home/jjj/p660/p660_build_dir_be/src/trunk/gcc/config/aarch64/aarch64-simd.md:4436
0x743aa1 try_split(rtx_def*, rtx_def*, int)
/home/jjj/p660/p660_build_dir_be/src/trunk/gcc/emit-rtl.c:3639
0x9b8c93 split_insn
/home/jjj/p660/p660_build_dir_be/src/trunk/gcc/recog.c:2901
0x9b8ee7 split_all_insns_noflow()
/home/jjj/p660/p660_build_dir_be/src/trunk/gcc/recog.c:3042
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
