__m128i
Microsoft Specific
The __m128i
data type, for use with the Streaming SIMD Extensions 2 (SSE2) instructions intrinsics, is defined in <emmintrin.h>.
// data_types__m128i.cpp
#include <emmintrin.h>
int main() {
__m128i x;
}
Remarks
You should not access the __m128i
fields directly. You can, however, see these types in the debugger. A variable of type __m128i
maps to the XMM[0-7] registers.
Variables of type __m128i
are automatically aligned on 16-byte boundaries.
Note
Using variables of type __m128i
will cause the compiler to generate the SSE2 movdqa
instruction. This instruction does not cause a fault on Pentium III processors but will result in silent failure, with possible side effects caused by whatever instructions movdqa
translates into on Pentium III processors.
The __m128i
data type is not supported on ARM processors.
END Microsoft Specific
See also
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