------- Comment #1 from baggett dot patrick at gmail dot com 2010-08-22 12:31
-------
I can confirm that is a problem on GCC 4.4.3, though I was using the
Intel-style intrinsic found in the SSE4 manual.
Smallest testcase:
gcc -msse4 -m64
--------------------
#include <smmintrin.h>
/* Read four bytes and extend to 4 ints in xmm reg. */
__m128i vint_zx8_32(unsigned char* m)
{
return _mm_cvtepu8_epi32( *((__m128i*)m) );
}
--------------------
Generated Code:
--------------------
vint_zx8_32:
movdqa (%rdi), %xmm0
pmovzxbd %xmm0, %xmm0
ret
--------------------
Expected Code:
--------------------
vint_zx8_32:
pmovzxbd (%rdi), %xmm0
ret
--
baggett dot patrick at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |baggett dot patrick at gmail
| |dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41484
