- Intrinsics are assembly-coded functions that let you use C++ function calls and variables in place of assembly instructions.
- Intrinsics can be used only on the host.
- Intrinsics are expanded inline eliminating function call overhead. Providing the same benefit as using inline assembly, intrinsics improve code readability, assist instruction scheduling, and help reduce debugging.
- Intrinsics provide access to instructions that cannot be generated using the standard constructs of the C and C++ languages.
- Specify compiler optionmarchso that the compiler recognizes the processor-specific or architecture-specific intrinsic.
- Include the immintrin.h header file that comes with the intrinsic declarations.