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invoke.texi (RS/6000 and PowerPC Options): Tidy formatting of -mrecip= documentation.

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2015-01-06  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* doc/invoke.texi (RS/6000 and PowerPC Options): Tidy formatting
	of -mrecip= documentation.

From-SVN: r219277
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Sandra Loosemore 2015-01-06 20:28:04 -05:00 committed by Sandra Loosemore
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@ -1,3 +1,8 @@
2015-01-06 Sandra Loosemore <sandra@codesourcery.com>
* doc/invoke.texi (RS/6000 and PowerPC Options): Tidy formatting
of -mrecip= documentation.
2015-01-06 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/64505

42
gcc/doc/invoke.texi
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@ -20630,15 +20630,39 @@ roots.
This option controls which reciprocal estimate instructions
may be used. @var{opt} is a comma-separated list of options, which may
be preceded by a @code{!} to invert the option:
@code{all}: enable all estimate instructions,
@code{default}: enable the default instructions, equivalent to @option{-mrecip},
@code{none}: disable all estimate instructions, equivalent to @option{-mno-recip};
@code{div}: enable the reciprocal approximation instructions for both single and double precision;
@code{divf}: enable the single-precision reciprocal approximation instructions;
@code{divd}: enable the double-precision reciprocal approximation instructions;
@code{rsqrt}: enable the reciprocal square root approximation instructions for both single and double precision;
@code{rsqrtf}: enable the single-precision reciprocal square root approximation instructions;
@code{rsqrtd}: enable the double-precision reciprocal square root approximation instructions;
@table @samp
@item all
Enable all estimate instructions.
@item default
Enable the default instructions, equivalent to @option{-mrecip}.
@item none
Disable all estimate instructions, equivalent to @option{-mno-recip}.
@item div
Enable the reciprocal approximation instructions for both
single and double precision.
@item divf
Enable the single-precision reciprocal approximation instructions.
@item divd
Enable the double-precision reciprocal approximation instructions.
@item rsqrt
Enable the reciprocal square root approximation instructions for both
single and double precision.
@item rsqrtf
Enable the single-precision reciprocal square root approximation instructions.
@item rsqrtd
Enable the double-precision reciprocal square root approximation instructions.
@end table
So, for example, @option{-mrecip=all,!rsqrtd} enables
all of the reciprocal estimate instructions, except for the