Compiler Directives Related to Performance

Certain compiler source directives (cDEC$ prefix) can be used in place of some performance-related compiler options and provide more control of certain optimizations, as discussed in the following sections:

• Using the cDEC$ OPTIONS Directive
• Using the cDEC$ UNROLL Directive to Control Loop Unrolling
• Using the cDEC$ IVDEP Directive to Control Certain Loop Optimizations