Inquiry about SGX's Support for SIMD Instruction Sets and Access to XMM or YMM Registers

[li0926]

Hello, I would like to inquire about SGX's support for SIMD instruction sets. Specifically, can programs running within SGX use all SIMD instructions supported by the processor? Is it possible to access all XMM or YMM registers?

[adrianlut]

Hi @li0926,

yes, this is possible. The compiler uses all optimizations it knows regarding SIMD. If you include the AVX headers in your project (they are not in the include path for SGX projects by default), you can also program with the intrinsics available on your platform.