The Intel® Advanced Vector Extensions (Intel® AVX) intrinsics are assembly-coded functions that call on Intel® AVX instructions, which are new vector SIMD instruction extensions for the IA-32 and Intel® 64 architectures. The Intel® Advanced Vector Extensions are architecturally similar to the Intel® Streaming SIMD Extensions (Intel® SSE) and double-precision floating-point portions of Intel® SSE2.
The prototypes for the Intel® AVX intrinsics are available in the immintrin.h file.
The Intel® AVX intrinsics are supported on the IA-32 and Intel® 64 architectures built from 32nm process technology. They map directly to the Intel® AVX new instructions and other enhanced 128-bit SIMD instructions.
The Intel® Advanced Vector Extensions (Intel® AVX) introduces 256-bit vector processing capability and includes components on the Intel processor generations built from 32nm process and beyond:
The first generation Intel® AVX provides 256-bit SIMD register support, 256-bit vector floating-point instructions, enhancements to 128-bit SIMD instructions, and support for three and four operand syntax.
Intel® AVX provide comprehensive functional improvements over previous generations of SIMD instruction extensions. The functional improvements include:
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