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| author | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
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| committer | alk3pInjection <webmaster@raspii.tech> | 2024-02-04 16:16:35 +0800 |
| commit | abdaadbcae30fe0c9a66c7516798279fdfd97750 (patch) | |
| tree | 00a54a6e25601e43876d03c1a4a12a749d4a914c /share/doc/gccint/Vector-Operations.html | |
https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads
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diff --git a/share/doc/gccint/Vector-Operations.html b/share/doc/gccint/Vector-Operations.html new file mode 100644 index 0000000..7b0c3e2 --- /dev/null +++ b/share/doc/gccint/Vector-Operations.html @@ -0,0 +1,142 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 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 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>GNU Compiler Collection (GCC) Internals: Vector Operations</title> + +<meta name="description" content="GNU Compiler Collection (GCC) Internals: Vector Operations"> +<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Vector Operations"> +<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="RTL.html#RTL" rel="up" title="RTL"> +<link href="Conversions.html#Conversions" rel="next" title="Conversions"> +<link href="Bit_002dFields.html#Bit_002dFields" rel="previous" title="Bit-Fields"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +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.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Vector-Operations"></a> +<div class="header"> +<p> +Next: <a href="Conversions.html#Conversions" accesskey="n" rel="next">Conversions</a>, Previous: <a href="Bit_002dFields.html#Bit_002dFields" accesskey="p" rel="previous">Bit-Fields</a>, Up: <a href="RTL.html#RTL" accesskey="u" rel="up">RTL</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="Vector-Operations-1"></a> +<h3 class="section">14.12 Vector Operations</h3> +<a name="index-vector-operations"></a> + +<p>All normal RTL expressions can be used with vector modes; they are +interpreted as operating on each part of the vector independently. +Additionally, there are a few new expressions to describe specific vector +operations. +</p> +<dl compact="compact"> +<dd><a name="index-vec_005fmerge"></a> +</dd> +<dt><code>(vec_merge:<var>m</var> <var>vec1</var> <var>vec2</var> <var>items</var>)</code></dt> +<dd><p>This describes a merge operation between two vectors. The result is a vector +of mode <var>m</var>; its elements are selected from either <var>vec1</var> or +<var>vec2</var>. Which elements are selected is described by <var>items</var>, which +is a bit mask represented by a <code>const_int</code>; a zero bit indicates the +corresponding element in the result vector is taken from <var>vec2</var> while +a set bit indicates it is taken from <var>vec1</var>. +</p> +<a name="index-vec_005fselect"></a> +</dd> +<dt><code>(vec_select:<var>m</var> <var>vec1</var> <var>selection</var>)</code></dt> +<dd><p>This describes an operation that selects parts of a vector. <var>vec1</var> is +the source vector, and <var>selection</var> is a <code>parallel</code> that contains a +<code>const_int</code> (or another expression, if the selection can be made at +runtime) for each of the subparts of the result vector, giving the number of +the source subpart that should be stored into it. The result mode <var>m</var> is +either the submode for a single element of <var>vec1</var> (if only one subpart is +selected), or another vector mode with that element submode (if multiple +subparts are selected). +</p> +<a name="index-vec_005fconcat"></a> +</dd> +<dt><code>(vec_concat:<var>m</var> <var>x1</var> <var>x2</var>)</code></dt> +<dd><p>Describes a vector concat operation. The result is a concatenation of the +vectors or scalars <var>x1</var> and <var>x2</var>; its length is the sum of the +lengths of the two inputs. +</p> +<a name="index-vec_005fduplicate"></a> +</dd> +<dt><code>(vec_duplicate:<var>m</var> <var>x</var>)</code></dt> +<dd><p>This operation converts a scalar into a vector or a small vector into a +larger one by duplicating the input values. The output vector mode must have +the same submodes as the input vector mode or the scalar modes, and the +number of output parts must be an integer multiple of the number of input +parts. +</p> +<a name="index-vec_005fseries"></a> +</dd> +<dt><code>(vec_series:<var>m</var> <var>base</var> <var>step</var>)</code></dt> +<dd><p>This operation creates a vector in which element <var>i</var> is equal to +‘<samp><var>base</var> + <var>i</var>*<var>step</var></samp>’. <var>m</var> must be a vector integer mode. +</p></dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="Conversions.html#Conversions" accesskey="n" rel="next">Conversions</a>, Previous: <a href="Bit_002dFields.html#Bit_002dFields" accesskey="p" rel="previous">Bit-Fields</a>, Up: <a href="RTL.html#RTL" accesskey="u" rel="up">RTL</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> |