as.info: D10V-Opts

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D10V Options

   The Mitsubishi D10V version of `as' has a few machine dependent
options.
`-O'
     The D10V 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.
`--nowarnswap'
     To optimize execution performance, `as' will sometimes swap the
     order of instructions. Normally this generates a warning. When
     this option is used, no warning will be generated when
     instructions are swapped.
`--gstabs-packing'
`--no-gstabs-packing'
     `as' packs adjacent short instructions into a single packed
     instruction. `--no-gstabs-packing' turns instruction packing off if
     `--gstabs' is specified as well; `--gstabs-packing' (the default)
     turns instruction packing on even when `--gstabs' is specified.