5.7.4.3 xc-dsc-gcc - Optimization Category

Table 5-7. Optimization Options
Option	Description	Command Line
Optimization Level	Select an optimization level. Equivalent to `-On` option, where `n` is an option. See 6.7.6 Options for Controlling Optimization.	`-On`
Unroll loops	Check to perform the optimization of loop unrolling. This is only done for loops whose number of iterations can be determined at compile time or run time. Uncheck to not unroll loops.	`-funroll-loops`
Omit frame pointer	Check to not keep the Frame Pointer in a register for functions that don’t need one. Uncheck to keep the Frame Pointer.	`-fomit-frame-pointer`
Unlimited procedural abstraction	Enable the procedure abstraction optimization. There is no limit on the nesting level.	`-mpa`
Procedural abstraction level	Enable the procedure abstraction optimization up to level `n`. 0 - Optimization is disabled. 1 - The first level of abstraction is allowed; that is, instruction sequences in the source code may be abstracted into a subroutine. 2 or greater - A second level of abstraction is allowed; that is, instructions that were put into a subroutine in the first level may be abstracted into a subroutine one level deeper. This pattern continues for larger values of `n`. The net effect is to limit the subroutine call nesting depth to a maximum of `n`.	`-mpa=n`

Optimization Level

Select an optimization level. Equivalent to -On option, where n is an option. See 6.7.6 Options for Controlling Optimization.

-On

Unroll loops

Check to perform the optimization of loop unrolling. This is only done for loops whose number of iterations can be determined at compile time or run time.

Uncheck to not unroll loops.

-funroll-loops

Omit frame pointer

Check to not keep the Frame Pointer in a register for functions that don’t need one.

Uncheck to keep the Frame Pointer.

-fomit-frame-pointer

Unlimited procedural abstraction

Enable the procedure abstraction optimization. There is no limit on the nesting level.

-mpa

Procedural abstraction level

Enable the procedure abstraction optimization up to level n.

0 - Optimization is disabled.
1 - The first level of abstraction is allowed; that is, instruction sequences in the source code may be abstracted into a subroutine.
2 or greater - A second level of abstraction is allowed; that is, instructions that were put into a subroutine in the first level may be abstracted into a subroutine one level deeper. This pattern continues for larger values of n. The net effect is to limit the subroutine call nesting depth to a maximum of n.

-mpa=n