Enable use of instructions found on processors that support enhanced instruction sets, e.g., the SSE, SSE2, and AVX enhancements ...

Enable use of instructions found on processors that support enhanced instruction sets, e.g., the SSE, SSE2, and AVX enhancements to the IA-32 and AVX enhancements to x64. Currently /arch:SSE and /arch:SSE2 are only available when building for the x86 architecture. If no option is specified, the compiler will use instructions found on processors that support SSE2. Use of enhanced instructions can be disabled with /arch:IA32.   (/arch:SSE, /arch:SSE2, /arch:AVX, /arch:IA32)