as: D30V-Opts
9.11.1 D30V Options
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The Mitsubishi D30V version of 'as' has a few machine dependent options.
'-O'
The D30V can often execute two sub-instructions in parallel. When
this option is used, 'as' will attempt to optimize its output by
detecting when instructions can be executed in parallel.
'-n'
When this option is used, 'as' will issue a warning every time it
adds a nop instruction.
'-N'
When this option is used, 'as' will issue a warning if it needs to
insert a nop after a 32-bit multiply before a load or 16-bit
multiply instruction.