3.14 Generating and Using Performance Advice

The compiler can do better optimization in some cases, if the user aids the compiler by providing additional information in the code. The compiler can prompt you to take certain actions to improve performance, by emitting "Advice". To get this Advice, use the --advice:performance option:

cl6x --advice:performance -o3 filename.c

This Performance Advice is of 3 different types :

• Advice to use correct compiler options
• Advice to prevent software pipeline disqualification
• Advice to improve loop performance

For more details on Using Performance Advice to Optimize your Code, see Section 4.15