This option controls usage of FXU instructions.
If -Xcpu=g4mh is specified, it is regarded that -Xfxu=on is specified.
If an option other than -Xcpu=g4mh is specified, it is regarded that -Xfxu=off is specified.
If off is specified, FXU instructions are regarded not to be used in the program.
If the specification of this option is changed for each source file, registers may not be correctly managed in exception handlers. The specification must be the same for all source files. |
If an option other than -Xcpu=g4mh is specified, this option is ignored. A warning is output in this case. |
In V2.00.00, FXU instructions are not generated even if this option is specified. Only codes generated by exception handlers will be affected by this option.