MATLAB Compiler

Optimization Bundles

All optimizations are controlled separately, and you can enable or disable any of the optimizations. To simplify the process, you can use the provided bundles of Compiler settings that allow you to select the most common optimization options. For more information on bundles, see -B <filename>:[<a1>,<a2>,...,<an>] (Bundle of Compiler Settings).

Turn On All Optimizations

To turn on all optimizations, use

• -O all
  

This bundle is stored in <matlab>/toolbox/compiler/bundles/opt_bundle_all. By default, all optimizations, except speculate, are on unless you specifically disable them or use the -g option for debugging. The -g option disables all optimizations.

Turn Off All Optimizations

To turn off all optimizations, use

• -O none
  

This bundle is stored in <matlab>/toolbox/compiler/bundles/opt_bundle_none. This optimization setting is used whenever you use -g for debugging.

Turn On Individual Optimizations

You can enable or disable each individual optimization. To enable/disable an optimization, use

• -O <optimization option>:[on|off]
  

where <optimization option> is

• array_indexing
• fold_mxarrays
• fold_non_scalar_mxarrays
• fold_scalar_mxarrays
• optimize_conditionals
• optimize_integer_for_loops
• percolate_simple_types
• speculate

List All Optimizations

To list all available optimizations, use

• -O list
  

Optimizing Performance

Optimizing Arrays