Next: , Previous: , Up: Performance Considerations   [Contents][Index] Other Optimization Switches

Since GNAT uses the gcc back end, all the specialized gcc optimization switches are potentially usable. These switches have not been extensively tested with GNAT but can generally be expected to work. Examples of switches in this category are -funroll-loops and the various target-specific -m options (in particular, it has been observed that -march=xxx can significantly improve performance on appropriate machines). For full details of these switches, see the `Submodel Options' section in the `Hardware Models and Configurations' chapter of Using the GNU Compiler Collection (GCC).