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255 Discussions

Intel compiler generates error / gcc is ok

GoGetEM
Beginner
357 Views

I just installed oneApi on my Ubuntu 20.04 machine.  My gcc compiler successfully compiles this native on Ubuntu:

 

void mullo_epi8(__m256i a, __m256i b, __m256i& result)
{
// convert to 16bit and combine
__m256i tmp0 = _mm256_cvtepi8_epi16(((__m128i*)&a[0])[0]);
__m256i tmp1 = _mm256_cvtepi8_epi16(((__m128i*)&b[0])[0]);
__m256i tmp2 = _mm256_cvtepi8_epi16(((__m128i*)&a[0])[1]);
__m256i tmp3 = _mm256_cvtepi8_epi16(((__m128i*)&b[0])[1]);

// do the multiply
__m256i res1 = _mm256_mullo_epi16(tmp0, tmp1);
__m256i res2 = _mm256_mullo_epi16(tmp2, tmp3);

// convert back to 8bit
result = _mm256_permute4x64_epi64(
_mm256_packs_epi16(res1, res2),
0xD8 // 3,1,2,0
);
}

With the intel compiler I get errors:

 __m256i tmp0 = _mm256_cvtepi8_epi16(((__m128i*)&(a.data()))[0]);
~^~~~~
./turbo_coder.h:120:52: error: address of vector element requested
__m256i tmp1 = _mm256_cvtepi8_epi16(((__m128i*)&b[0])[0]);
^~~~~
./turbo_coder.h:121:52: error: address of vector element requested
__m256i tmp2 = _mm256_cvtepi8_epi16(((__m128i*)&a[0])[1]);
^~~~~

0 Kudos
3 Replies
NoorjahanSk_Intel
Moderator
333 Views

Hi,

Thanks for reaching out to us.

 

could you please try using &a instead of &a[0].

If the issue still persists, please let us know.

 

Thanks & regards

Noorjahan

 

NoorjahanSk_Intel
Moderator
307 Views

Hi,

 

Reminder:

Could you please confirm whether your issue is resolved. If yes, let us know if we can close this thread from our end.

 

Thanks & Regards

Noorjahan.

 

 

NoorjahanSk_Intel
Moderator
259 Views

Hi,

We are closing this thread assuming your issue has been resolved.

We will no longer respond to this thread. If you require additional assistance from Intel, please start a new thread.

Any further interaction in this thread will be considered community only..

 

Thanks & Regards

Noorjahan

 

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