Hi Brian,
Thank you! Here's the header files included:
#include <xmmintrin.h>
#include <emmintrin.h>
#include <smmintrin.h>
The compilation is okay, no error message. It's during execution that
I see the "Illegal instruction" error message.
Best regards,
LC
On Thu, Aug 20, 2009 at 1:01 PM, Brian Budge<brian.budge@xxxxxxxxx> wrote:
> Hi LC -
>
> Do you have the correct header files included? You need the
> *mmintrin.h family of headers for these functions to work.
>
> Brian
>
> On Thu, Aug 20, 2009 at 9:09 AM, Lingchuan (LC)
> Meng<lingchuanmeng@xxxxxxxxx> wrote:
>> Hi all,
>>
>> When vectorizing some of my integer code, I had this "Illegal
>> instruction" problem with SIMD intrinsics in GCC. I believe the error
>> is triggered by the instruction:
>>
>> _mm_store_si128((__m128i *)c, v2);
>>
>> where C and v2 are defined as:
>>
>> int c[4] __attribute__((aligned(16))) = {0, 0, 0, 0};
>> __m128i v2;
>>
>> And the CFLAGS is
>>
>> -I/usr/local/papi-3.6.1/include -L/usr/local/papi-3.6.1/lib/ -lpapi
>> -lm -O2 -msse4.1 -fno-inline-small-functions
>>
>> I searched around when starting with SIMD intrinsics, and didn't find
>> a complete instruction set for GCC. So I end up using something
>> similar from MSDN.
>>
>> What's the legal intrinsic function in GCC to store a __m128i vector
>> back to an integer array?
>>
>> Thanks,
>>
>> LC
>>
>
