gas/doc/c-xtensa.texi

36 @item --density | --no-density
37 @kindex --density
38 @kindex --no-density
39 @cindex Xtensa density option
40 @cindex density option, Xtensa
41 Enable or disable use of the Xtensa code density option (16-bit
43 Instructions}.  If the processor is configured with the density option,
193 generation of density instructions where appropriate and automatic
203 @cindex density instructions
205 The Xtensa instruction set has a code density option that provides
210 density option.  This translation can be disabled by using specific
212 @samp{--no-density} command-line option (@pxref{Xtensa Options, ,Command
213 Line Options}), or by using the @code{no-density} directive
214 (@pxref{Density Directive, ,density}).
216 It is a good idea @emph{not} to use the density instructions directly.
218 possible.  If you later need to avoid using the code density option, you
235 to widen density instructions preceding a branch target so that the
238 instruction.  If there are not enough preceding safe density
301 density option is available.  Otherwise, @code{BNEZ} would be used.)
406 instruction (or the equivalent @code{OR} instruction if the code density
459     .begin no-density
461     .begin density
463     .end density
465     .end no-density
469 @code{no-density} region both result in @code{ADD} machine instructions,
471 @code{ADD} at @code{M} in the inner @code{density} region.
481 the code density option is available, the default is to select density
483 @samp{--no-density} flag, which overrides the default, all the generic
485 assembled with the @samp{--density} flag, which is already the default,
486 the @code{no-density} directive takes precedence and only one of
505 @subsection density
506 @cindex @code{density} directive
507 @cindex @code{no-density} directive
509 The @code{density} and @code{no-density} directives enable or disable
510 optimization of generic instructions into density instructions within
514     .begin [no-]density
515     .end [no-]density
519 does not support the code density option or the @samp{--no-density}