You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
262 lines
12 KiB
HTML
262 lines
12 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Copyright (C) 1988-2018 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
|
any later version published by the Free Software Foundation; with the
|
|
Invariant Sections being "Funding Free Software", the Front-Cover
|
|
Texts being (a) (see below), and with the Back-Cover Texts being (b)
|
|
(see below). A copy of the license is included in the section entitled
|
|
"GNU Free Documentation License".
|
|
|
|
(a) The FSF's Front-Cover Text is:
|
|
|
|
A GNU Manual
|
|
|
|
(b) The FSF's Back-Cover Text is:
|
|
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
|
software. Copies published by the Free Software Foundation raise
|
|
funds for GNU development. -->
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>MIPS-3D Built-in Functions (Using the GNU Compiler Collection (GCC))</title>
|
|
|
|
<meta name="description" content="MIPS-3D Built-in Functions (Using the GNU Compiler Collection (GCC))">
|
|
<meta name="keywords" content="MIPS-3D Built-in Functions (Using the GNU Compiler Collection (GCC))">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="MIPS-Loongson-Built_002din-Functions.html#MIPS-Loongson-Built_002din-Functions" rel="up" title="MIPS Loongson Built-in Functions">
|
|
<link href="MIPS-SIMD-Architecture-_0028MSA_0029-Support.html#MIPS-SIMD-Architecture-_0028MSA_0029-Support" rel="next" title="MIPS SIMD Architecture (MSA) Support">
|
|
<link href="Paired_002dSingle-Built_002din-Functions.html#Paired_002dSingle-Built_002din-Functions" rel="prev" title="Paired-Single Built-in Functions">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.indentedblock {margin-right: 0em}
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smalllisp {margin-left: 3.2em}
|
|
kbd {font-style: oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nolinebreak {white-space: nowrap}
|
|
span.roman {font-family: initial; font-weight: normal}
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en">
|
|
<a name="MIPS_002d3D-Built_002din-Functions"></a>
|
|
<div class="header">
|
|
<p>
|
|
Previous: <a href="Paired_002dSingle-Built_002din-Functions.html#Paired_002dSingle-Built_002din-Functions" accesskey="p" rel="prev">Paired-Single Built-in Functions</a>, Up: <a href="MIPS-Loongson-Built_002din-Functions.html#MIPS-Loongson-Built_002din-Functions" accesskey="u" rel="up">MIPS Loongson Built-in Functions</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="MIPS_002d3D-Built_002din-Functions-1"></a>
|
|
<h4 class="subsubsection">6.59.15.3 MIPS-3D Built-in Functions</h4>
|
|
|
|
<p>The MIPS-3D Application-Specific Extension (ASE) includes additional
|
|
paired-single instructions that are designed to improve the performance
|
|
of 3D graphics operations. Support for these instructions is controlled
|
|
by the <samp>-mips3d</samp> command-line option.
|
|
</p>
|
|
<p>The functions listed below map directly to a particular MIPS-3D
|
|
instruction. Please refer to the architecture specification for
|
|
more details on what each instruction does.
|
|
</p>
|
|
<dl compact="compact">
|
|
<dt><code>v2sf __builtin_mips_addr_ps (v2sf, v2sf)</code></dt>
|
|
<dd><p>Reduction add (<code>addr.ps</code>).
|
|
</p>
|
|
</dd>
|
|
<dt><code>v2sf __builtin_mips_mulr_ps (v2sf, v2sf)</code></dt>
|
|
<dd><p>Reduction multiply (<code>mulr.ps</code>).
|
|
</p>
|
|
</dd>
|
|
<dt><code>v2sf __builtin_mips_cvt_pw_ps (v2sf)</code></dt>
|
|
<dd><p>Convert paired single to paired word (<code>cvt.pw.ps</code>).
|
|
</p>
|
|
</dd>
|
|
<dt><code>v2sf __builtin_mips_cvt_ps_pw (v2sf)</code></dt>
|
|
<dd><p>Convert paired word to paired single (<code>cvt.ps.pw</code>).
|
|
</p>
|
|
</dd>
|
|
<dt><code>float __builtin_mips_recip1_s (float)</code></dt>
|
|
<dt><code>double __builtin_mips_recip1_d (double)</code></dt>
|
|
<dt><code>v2sf __builtin_mips_recip1_ps (v2sf)</code></dt>
|
|
<dd><p>Reduced-precision reciprocal (sequence step 1) (<code>recip1.<var>fmt</var></code>).
|
|
</p>
|
|
</dd>
|
|
<dt><code>float __builtin_mips_recip2_s (float, float)</code></dt>
|
|
<dt><code>double __builtin_mips_recip2_d (double, double)</code></dt>
|
|
<dt><code>v2sf __builtin_mips_recip2_ps (v2sf, v2sf)</code></dt>
|
|
<dd><p>Reduced-precision reciprocal (sequence step 2) (<code>recip2.<var>fmt</var></code>).
|
|
</p>
|
|
</dd>
|
|
<dt><code>float __builtin_mips_rsqrt1_s (float)</code></dt>
|
|
<dt><code>double __builtin_mips_rsqrt1_d (double)</code></dt>
|
|
<dt><code>v2sf __builtin_mips_rsqrt1_ps (v2sf)</code></dt>
|
|
<dd><p>Reduced-precision reciprocal square root (sequence step 1)
|
|
(<code>rsqrt1.<var>fmt</var></code>).
|
|
</p>
|
|
</dd>
|
|
<dt><code>float __builtin_mips_rsqrt2_s (float, float)</code></dt>
|
|
<dt><code>double __builtin_mips_rsqrt2_d (double, double)</code></dt>
|
|
<dt><code>v2sf __builtin_mips_rsqrt2_ps (v2sf, v2sf)</code></dt>
|
|
<dd><p>Reduced-precision reciprocal square root (sequence step 2)
|
|
(<code>rsqrt2.<var>fmt</var></code>).
|
|
</p></dd>
|
|
</dl>
|
|
|
|
<p>The following multi-instruction functions are also available.
|
|
In each case, <var>cond</var> can be any of the 16 floating-point conditions:
|
|
<code>f</code>, <code>un</code>, <code>eq</code>, <code>ueq</code>, <code>olt</code>, <code>ult</code>,
|
|
<code>ole</code>, <code>ule</code>, <code>sf</code>, <code>ngle</code>, <code>seq</code>,
|
|
<code>ngl</code>, <code>lt</code>, <code>nge</code>, <code>le</code> or <code>ngt</code>.
|
|
</p>
|
|
<dl compact="compact">
|
|
<dt><code>int __builtin_mips_cabs_<var>cond</var>_s (float <var>a</var>, float <var>b</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_cabs_<var>cond</var>_d (double <var>a</var>, double <var>b</var>)</code></dt>
|
|
<dd><p>Absolute comparison of two scalar values (<code>cabs.<var>cond</var>.<var>fmt</var></code>,
|
|
<code>bc1t</code>/<code>bc1f</code>).
|
|
</p>
|
|
<p>These functions compare <var>a</var> and <var>b</var> using <code>cabs.<var>cond</var>.s</code>
|
|
or <code>cabs.<var>cond</var>.d</code> and return the result as a boolean value.
|
|
For example:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">float a, b;
|
|
if (__builtin_mips_cabs_eq_s (a, b))
|
|
true ();
|
|
else
|
|
false ();
|
|
</pre></div>
|
|
|
|
</dd>
|
|
<dt><code>int __builtin_mips_upper_cabs_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_lower_cabs_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>)</code></dt>
|
|
<dd><p>Absolute comparison of two paired-single values (<code>cabs.<var>cond</var>.ps</code>,
|
|
<code>bc1t</code>/<code>bc1f</code>).
|
|
</p>
|
|
<p>These functions compare <var>a</var> and <var>b</var> using <code>cabs.<var>cond</var>.ps</code>
|
|
and return either the upper or lower half of the result. For example:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">v2sf a, b;
|
|
if (__builtin_mips_upper_cabs_eq_ps (a, b))
|
|
upper_halves_are_equal ();
|
|
else
|
|
upper_halves_are_unequal ();
|
|
|
|
if (__builtin_mips_lower_cabs_eq_ps (a, b))
|
|
lower_halves_are_equal ();
|
|
else
|
|
lower_halves_are_unequal ();
|
|
</pre></div>
|
|
|
|
</dd>
|
|
<dt><code>v2sf __builtin_mips_movt_cabs_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>, v2sf <var>c</var>, v2sf <var>d</var>)</code></dt>
|
|
<dt><code>v2sf __builtin_mips_movf_cabs_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>, v2sf <var>c</var>, v2sf <var>d</var>)</code></dt>
|
|
<dd><p>Conditional move based on absolute comparison (<code>cabs.<var>cond</var>.ps</code>,
|
|
<code>movt.ps</code>/<code>movf.ps</code>).
|
|
</p>
|
|
<p>The <code>movt</code> functions return the value <var>x</var> computed by:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">cabs.<var>cond</var>.ps <var>cc</var>,<var>a</var>,<var>b</var>
|
|
mov.ps <var>x</var>,<var>c</var>
|
|
movt.ps <var>x</var>,<var>d</var>,<var>cc</var>
|
|
</pre></div>
|
|
|
|
<p>The <code>movf</code> functions are similar but use <code>movf.ps</code> instead
|
|
of <code>movt.ps</code>.
|
|
</p>
|
|
</dd>
|
|
<dt><code>int __builtin_mips_any_c_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_all_c_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_any_cabs_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_all_cabs_<var>cond</var>_ps (v2sf <var>a</var>, v2sf <var>b</var>)</code></dt>
|
|
<dd><p>Comparison of two paired-single values
|
|
(<code>c.<var>cond</var>.ps</code>/<code>cabs.<var>cond</var>.ps</code>,
|
|
<code>bc1any2t</code>/<code>bc1any2f</code>).
|
|
</p>
|
|
<p>These functions compare <var>a</var> and <var>b</var> using <code>c.<var>cond</var>.ps</code>
|
|
or <code>cabs.<var>cond</var>.ps</code>. The <code>any</code> forms return true if either
|
|
result is true and the <code>all</code> forms return true if both results are true.
|
|
For example:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">v2sf a, b;
|
|
if (__builtin_mips_any_c_eq_ps (a, b))
|
|
one_is_true ();
|
|
else
|
|
both_are_false ();
|
|
|
|
if (__builtin_mips_all_c_eq_ps (a, b))
|
|
both_are_true ();
|
|
else
|
|
one_is_false ();
|
|
</pre></div>
|
|
|
|
</dd>
|
|
<dt><code>int __builtin_mips_any_c_<var>cond</var>_4s (v2sf <var>a</var>, v2sf <var>b</var>, v2sf <var>c</var>, v2sf <var>d</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_all_c_<var>cond</var>_4s (v2sf <var>a</var>, v2sf <var>b</var>, v2sf <var>c</var>, v2sf <var>d</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_any_cabs_<var>cond</var>_4s (v2sf <var>a</var>, v2sf <var>b</var>, v2sf <var>c</var>, v2sf <var>d</var>)</code></dt>
|
|
<dt><code>int __builtin_mips_all_cabs_<var>cond</var>_4s (v2sf <var>a</var>, v2sf <var>b</var>, v2sf <var>c</var>, v2sf <var>d</var>)</code></dt>
|
|
<dd><p>Comparison of four paired-single values
|
|
(<code>c.<var>cond</var>.ps</code>/<code>cabs.<var>cond</var>.ps</code>,
|
|
<code>bc1any4t</code>/<code>bc1any4f</code>).
|
|
</p>
|
|
<p>These functions use <code>c.<var>cond</var>.ps</code> or <code>cabs.<var>cond</var>.ps</code>
|
|
to compare <var>a</var> with <var>b</var> and to compare <var>c</var> with <var>d</var>.
|
|
The <code>any</code> forms return true if any of the four results are true
|
|
and the <code>all</code> forms return true if all four results are true.
|
|
For example:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">v2sf a, b, c, d;
|
|
if (__builtin_mips_any_c_eq_4s (a, b, c, d))
|
|
some_are_true ();
|
|
else
|
|
all_are_false ();
|
|
|
|
if (__builtin_mips_all_c_eq_4s (a, b, c, d))
|
|
all_are_true ();
|
|
else
|
|
some_are_false ();
|
|
</pre></div>
|
|
</dd>
|
|
</dl>
|
|
|
|
<hr>
|
|
<div class="header">
|
|
<p>
|
|
Previous: <a href="Paired_002dSingle-Built_002din-Functions.html#Paired_002dSingle-Built_002din-Functions" accesskey="p" rel="prev">Paired-Single Built-in Functions</a>, Up: <a href="MIPS-Loongson-Built_002din-Functions.html#MIPS-Loongson-Built_002din-Functions" accesskey="u" rel="up">MIPS Loongson Built-in Functions</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|