Lets you set a level of guidance for auto-vectorization.
Linux and macOS:
- Is an optional value specifying the level of guidance to be provided.The values available are 1 through 4. Value 1 indicates a standard level of guidance. Value 4 indicates the most advanced level of guidance. Ifnis omitted, the default is 4.
- You do not receive guidance about how to improve optimizations for vectorization.
This option lets you set a level of guidance for auto-vectorization. It causes the compiler to generate messages suggesting ways to improve that optimization.