On Tue, Nov 29, 2016 at 9:14 PM, Christophe Lyon
<christophe.l...@linaro.org> wrote:
> On 29 November 2016 at 20:38, Uros Bizjak <ubiz...@gmail.com> wrote:
>>> 2016-11-26 Segher Boessenkool <seg...@kernel.crashing.org>
>>>
>>> * combine.c (change_zero_ext): Also handle extends from a subreg
>>> to a mode bigger than that of the operand of the subreg.
>>
>> This patch introduced:
>>
>> FAIL: gcc.target/i386/pr44578.c (internal compiler error)
>>
>> on i686 (or x86_64 32bit multi-lib).
>>
>> ./cc1 -O2 -mtune=athlon64 -m32 -quiet pr44578.c
>> pr44578.c: In function ‘test’:
>> pr44578.c:18:1: internal compiler error: in gen_rtx_SUBREG, at emit-rtl.c:908
>> }
>> ^
>> 0x81493b gen_rtx_SUBREG(machine_mode, rtx_def*, int)
>> /home/uros/gcc-svn/trunk/gcc/emit-rtl.c:908
>> 0x122609f change_zero_ext
>> /home/uros/gcc-svn/trunk/gcc/combine.c:11260
>> 0x1226207 recog_for_combine
>> /home/uros/gcc-svn/trunk/gcc/combine.c:11346
>> 0x1236db3 try_combine
>> /home/uros/gcc-svn/trunk/gcc/combine.c:3501
>> 0x123a3e0 combine_instructions
>> /home/uros/gcc-svn/trunk/gcc/combine.c:1265
>> 0x123a3e0 rest_of_handle_combine
>> /home/uros/gcc-svn/trunk/gcc/combine.c:14581
>> 0x123a3e0 execute
>> /home/uros/gcc-svn/trunk/gcc/combine.c:14626
>>
>> Uros.
>
> Hi,
>
> I'm seeing a similar error on aarch64:
> FAIL: gcc.target/aarch64/advsimd-intrinsics/vduph_lane.c -O1
> (internal compiler error)
> with the same backtrace.
Hi,
I also saw the same failure for below tests on aarch64.
/tmp/.../src/gcc/gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vget_lane.c:
In function 'exec_vget_lane':
/tmp/.../src/gcc/gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vget_lane.c:136:1:
internal compiler error: in gen_rtx_SUBREG, at emit-rtl.c:908
0x7d9cd1 gen_rtx_SUBREG(machine_mode, rtx_def*, int)
/tmp/.../src/gcc/gcc/emit-rtl.c:908
0x7d9d25 gen_lowpart_SUBREG(machine_mode, rtx_def*)
/tmp/.../src/gcc/gcc/emit-rtl.c:924
0x1112562 change_zero_ext
/tmp/.../src/gcc/gcc/combine.c:11260
0x1112b47 recog_for_combine
/tmp/.../src/gcc/gcc/combine.c:11346
Thanks,
bin
>
> Christophe
