md.texi (Standard Pattern Names For Generation): Document sincos pattern.
* doc/md.texi (Standard Pattern Names For Generation): Document sincos pattern. From-SVN: r188219
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2012-06-04 Oleg Endo <olegendo@gcc.gnu.org>
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* doc/md.texi (Standard Pattern Names For Generation): Document
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sincos pattern.
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2012-06-04 H.J. Lu <hongjiu.lu@intel.com>
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2012-06-04 H.J. Lu <hongjiu.lu@intel.com>
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PR bootstrap/53555
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PR bootstrap/53555
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@ -4795,6 +4795,22 @@ corresponds to the C data type @code{double} and the @code{sinf}
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built-in function uses the mode which corresponds to the C data
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built-in function uses the mode which corresponds to the C data
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type @code{float}.
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type @code{float}.
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@cindex @code{sincos@var{m}3} instruction pattern
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@item @samp{sincos@var{m}3}
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Store the sine of operand 2 into operand 0 and the cosine of
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operand 2 into operand 1.
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The @code{sin} and @code{cos} built-in functions of C always use the
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mode which corresponds to the C data type @code{double} and the
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@code{sinf} and @code{cosf} built-in function use the mode which
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corresponds to the C data type @code{float}.
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Targets that can calculate the sine and cosine simultaneously can
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implement this pattern as opposed to implementing individual
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@code{sin@var{m}2} and @code{cos@var{m}2} patterns. The @code{sin}
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and @code{cos} built-in functions will then be expanded to the
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@code{sincos@var{m}3} pattern, with one of the output values
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left unused.
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@cindex @code{exp@var{m}2} instruction pattern
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@cindex @code{exp@var{m}2} instruction pattern
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@item @samp{exp@var{m}2}
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@item @samp{exp@var{m}2}
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Store the exponential of operand 1 into operand 0.
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Store the exponential of operand 1 into operand 0.
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