On Tue, Jan 3, 2012 at 11:50 AM, Uros Bizjak <ubiz...@gmail.com> wrote:
> On Mon, Jan 2, 2012 at 9:31 PM, Richard Henderson <r...@redhat.com> wrote:
>> On 01/03/2012 06:47 AM, Uros Bizjak wrote:
>>> if (d->testing_p)
>>> return true;
>>>
>>> + hi = shift < nelt ? d->op1 : d->op0;
>>> + lo = shift < nelt ? d->op0 : d->op1;
>>> +
>>> + shift %= nelt;
>>
>> This bit only works for little-endian. It's why I had that assert
>> for shift range 1-63, for one thing.
>>
>> I guess an extra check for big-endian before the loop could fix that.
>> I.e.
>>
>> shift = d->perm[0];
>> + if (BYTES_BIG_ENDIAN && shift > nelt)
>> + return false;
>
> I tried to investigate -mbig-endian a bit, but unfortunately almost
> all gcc.dg/torture/vshuf-*.c tests FAIL with -O2 on unpatched gcc.
> Tests pass with -O0, though.
ATM, we have gcc.dg/torture/vshuf*.c:
Native configuration is ia64-unknown-linux-gnu
=== gcc tests ===
Running target unix
FAIL: gcc.dg/torture/vshuf-v2si.c -O2 (internal compiler error)
FAIL: gcc.dg/torture/vshuf-v2si.c -O2 (test for excess errors)
UNRESOLVED: gcc.dg/torture/vshuf-v2si.c -O2 compilation failed to
produce executable
=== gcc Summary for unix ===
# of expected passes 30
# of unexpected failures 2
# of unresolved testcases 1
# of unsupported tests 112
Running target unix/-mbig-endian
FAIL: gcc.dg/torture/vshuf-v16hi.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v16qi.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v2sf.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v2si.c -O2 (internal compiler error)
FAIL: gcc.dg/torture/vshuf-v2si.c -O2 (test for excess errors)
UNRESOLVED: gcc.dg/torture/vshuf-v2si.c -O2 compilation failed to
produce executable
FAIL: gcc.dg/torture/vshuf-v32qi.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v4hi.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v4sf.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v4si.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v8hi.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v8qi.c -O2 execution test
FAIL: gcc.dg/torture/vshuf-v8si.c -O2 execution test
=== gcc Summary for unix/-mbig-endian ===
# of expected passes 20
# of unexpected failures 12
# of unresolved testcases 1
# of unsupported tests 112
=== gcc Summary ===
# of expected passes 50
# of unexpected failures 14
# of unresolved testcases 2
# of unsupported tests 224
/home/uros/gcc-build/gcc/xgcc version 4.7.0 20120103 (experimental)
[trunk revision 182829] (GCC)
Uros.
