publish two Intel extensions:
cl_intel_subgroups_char
cl_intel_subgroups_long
diff --git a/extensions/clext.php b/extensions/clext.php
index 5846c5d..39280b8 100644
--- a/extensions/clext.php
+++ b/extensions/clext.php
@@ -115,4 +115,8 @@
</li>
<li value=58><a href="extensions/arm/cl_arm_job_slot_selection.txt">cl_arm_job_slot_selection</a>
</li>
+<li value=59><a href="extensions/intel/cl_intel_subgroups_char.html">cl_intel_subgroups_char</a>
+</li>
+<li value=60><a href="extensions/intel/cl_intel_subgroups_long.html">cl_intel_subgroups_long</a>
+</li>
</ol>
diff --git a/extensions/intel/cl_intel_subgroups_char.html b/extensions/intel/cl_intel_subgroups_char.html
new file mode 100644
index 0000000..2ac37c5
--- /dev/null
+++ b/extensions/intel/cl_intel_subgroups_char.html
@@ -0,0 +1,1551 @@
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+<html lang="en">
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+<title>cl_intel_subgroups_char</title>
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+<body class="book">
+<div id="header">
+<h1>cl_intel_subgroups_char</h1>
+<div class="details">
+<span id="revnumber">version V2.2-11-93-g2eccabe,</span>
+<span id="revdate">Fri, 13 Mar 2020 20:13:55 +0000</span>
+<br><span id="revremark">from git branch: cl_intel_subgroups_char_long commit: 2eccabe9a2ee707c76ba080b99c0edfe95f199a1</span>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_name_strings">Name Strings</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><code>cl_intel_subgroups_char</code></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contact">Contact</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Ben Ashbaugh, Intel (ben 'dot' ashbaugh 'at' intel 'dot' com)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contributors">Contributors</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Ben Ashbaugh, Intel<br>
+Fangwen Fu, Intel<br>
+Sabareesh Ganapathy, Intel<br>
+Junjie Gu, Intel<br>
+Konrad Trifunovic, Intel</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_notice">Notice</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Copyright (c) 2020 Intel Corporation. All rights reserved.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_status">Status</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Final Draft</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_version">Version</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Built On: 2020-03-13<br>
+Revision: 1</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_dependencies">Dependencies</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>OpenCL 1.2 and support for <code>cl_intel_subgroups</code> is required.
+This extension is written against the OpenCL API Specification Version 2.2 (revision v2.2-7), against the OpenCL C Language Specification Version 2.0 (revision v2.2-7), and against version 4 of the <code>cl_intel_subgroups</code> specification.</p>
+</div>
+<div class="paragraph">
+<p>This extension requires OpenCL support for SPIR-V, either via OpenCL 2.1 or via the <code>cl_khr_il_program</code> extension.</p>
+</div>
+<div class="paragraph">
+<p>This extension interacts with the <code>cl_intel_spirv_subgroups</code> extension.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_overview">Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The goal of this extension is to allow programmers to improve the performance of applications operating on 8-bit data types by extending the subgroup functions described in the <code>cl_intel_subgroups</code> extension to support 8-bit integer data types (<code>chars</code> and <code>uchars</code>).
+Specifically, the extension:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Extends the subgroup broadcast function to allow 8-bit integer values to be broadcast from one work item to all other work items in the subgroup.</p>
+</li>
+<li>
+<p>Extends the subgroup scan and reduction functions to operate on 8-bit integer data types.</p>
+</li>
+<li>
+<p>Extends the Intel subgroup shuffle functions to allow arbitrarily exchanging 8-bit integer values among work items in the subgroup.</p>
+</li>
+<li>
+<p>Extends the Intel subgroup block read and write functions to allow reading and writing 8-bit integer data from images and buffers.</p>
+</li>
+</ul>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_functions">New API Functions</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_enums">New API Enums</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_opencl_c_functions">New OpenCL C Functions</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add <code>char</code> and <code>uchar</code> to the list of supported data types for the subgroup broadcast, scan, and reduction functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="listingblock">
+<div class="content">
+<pre class="highlight"><code>char intel_sub_group_broadcast( char x, uint sub_group_local_id )
+uchar intel_sub_group_broadcast( uchar x, uint sub_group_local_id )
+
+char intel_sub_group_reduce_add( char x )
+uchar intel_sub_group_reduce_add( uchar x )
+char intel_sub_group_reduce_min( char x )
+uchar intel_sub_group_reduce_min( uchar x )
+char intel_sub_group_reduce_max( char x )
+uchar intel_sub_group_reduce_max( uchar x )
+
+char intel_sub_group_scan_exclusive_add( char x )
+uchar intel_sub_group_scan_exclusive_add( uchar x )
+char intel_sub_group_scan_exclusive_min( char x )
+uchar intel_sub_group_scan_exclusive_min( uchar x )
+char intel_sub_group_scan_exclusive_max( char x )
+uchar intel_sub_group_scan_exclusive_max( uchar x )
+
+char intel_sub_group_scan_inclusive_add( char x )
+uchar intel_sub_group_scan_inclusive_add( uchar x )
+char intel_sub_group_scan_inclusive_min( char x )
+uchar intel_sub_group_scan_inclusive_min( uchar x )
+char intel_sub_group_scan_inclusive_max( char x )
+uchar intel_sub_group_scan_inclusive_max( uchar x )</code></pre>
+</div>
+</div>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">Add <code>char</code>, <code>char2</code>, <code>char4</code>, <code>char8</code>, <code>char16</code>, <code>uchar</code>, <code>uchar2</code>, <code>uchar4</code>, <code>uchar8</code>, and <code>uchar16</code> to the list of <code>gentype</code> data types supported by the <code>sub_group_shuffle</code>, <code>sub_group_shuffle_down</code>, <code>sub_group_shuffle_up</code>, and <code>sub_group_shuffle_xor</code> functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="listingblock">
+<div class="content">
+<pre class="highlight"><code>gentype intel_sub_group_shuffle( gentype data, uint c )
+gentype intel_sub_group_shuffle_down(
+ gentype current, gentype next, uint delta )
+gentype intel_sub_group_shuffle_up(
+ gentype previous, gentype current, uint delta )
+gentype intel_sub_group_shuffle_xor( gentype data, uint value )</code></pre>
+</div>
+</div>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">Add <code>uchar</code> variants of the subgroup block read and write functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="listingblock">
+<div class="content">
+<pre class="highlight"><code>uchar intel_sub_group_block_read_uc( const __global uchar* p )
+uchar2 intel_sub_group_block_read_uc2( const __global uchar* p )
+uchar4 intel_sub_group_block_read_uc4( const __global uchar* p )
+uchar8 intel_sub_group_block_read_uc8( const __global uchar* p )
+uchar16 intel_sub_group_block_read_uc16( const __global uchar* p )
+uchar intel_sub_group_block_read_uc( image2d_t image, int2 byte_coord )
+uchar2 intel_sub_group_block_read_uc2( image2d_t image, int2 byte_coord )
+uchar4 intel_sub_group_block_read_uc4( image2d_t image, int2 byte_coord )
+uchar8 intel_sub_group_block_read_uc8( image2d_t image, int2 byte_coord )
+uchar16 intel_sub_group_block_read_uc16( image1d_t image, int2 byte_coord )
+
+void intel_sub_group_block_write_uc( __global uchar* p, uchar data )
+void intel_sub_group_block_write_uc2( __global uchar* p, uchar2 data )
+void intel_sub_group_block_write_uc4( __global uchar* p, uchar4 data )
+void intel_sub_group_block_write_uc8( __global uchar* p, uchar8 data )
+void intel_sub_group_block_write_uc16( __global uchar* p, uchar16 data )
+void intel_sub_group_block_write_uc( image2d_t image, int2 byte_coord, uchar data )
+void intel_sub_group_block_write_uc2( image2d_t image, int2 byte_coord, uchar2 data )
+void intel_sub_group_block_write_uc4( image2d_t image, int2 byte_coord, uchar4 data )
+void intel_sub_group_block_write_uc8( image2d_t image, int2 byte_coord, uchar8 data )
+void intel_sub_group_block_write_uc16( image2d_t image, int2 byte_coord, uchar16 data )</code></pre>
+</div>
+</div>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">For naming consistency, also add suffixed aliases of the <code>uint</code> subgroup block read and write functions described in the <code>cl_intel_subgroups</code> extension: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="listingblock">
+<div class="content">
+<pre class="highlight"><code>uint intel_sub_group_block_read_ui( const __global uint* p )
+uint2 intel_sub_group_block_read_ui2( const __global uint* p )
+uint4 intel_sub_group_block_read_ui4( const __global uint* p )
+uint8 intel_sub_group_block_read_ui8( const __global uint* p )
+uint intel_sub_group_block_read_ui( image2d_t image, int2 byte_coord )
+uint2 intel_sub_group_block_read_ui2( image2d_t image, int2 byte_coord )
+uint4 intel_sub_group_block_read_ui4( image2d_t image, int2 byte_coord )
+uint8 intel_sub_group_block_read_ui8( image2d_t image, int2 byte_coord )
+
+void intel_sub_group_block_write_ui( __global uint* p, uint data )
+void intel_sub_group_block_write_ui2( __global uint* p, uint2 data )
+void intel_sub_group_block_write_ui4( __global uint* p, uint4 data )
+void intel_sub_group_block_write_ui8( __global uint* p, uint8 data )
+void intel_sub_group_block_write_ui( image2d_t image, int2 byte_coord, uint data )
+void intel_sub_group_block_write_ui2( image2d_t image, int2 byte_coord, uint2 data )
+void intel_sub_group_block_write_ui4( image2d_t image, int2 byte_coord, uint4 data )
+void intel_sub_group_block_write_ui8( image2d_t image, int2 byte_coord, uint8 data )</code></pre>
+</div>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_c_specification">Modifications to the OpenCL C Specification</h2>
+<div class="sectionbody">
+<div class="sect2">
+<h3 id="_additions_to_section_6_13_15_work_group_functions">Additions to Section 6.13.15 - "Work Group Functions"</h3>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add <code>char</code> and <code>uchar</code> to the list of supported data types for the subgroup broadcast, scan, and reduction functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 66.6666%;">
+<col style="width: 33.3334%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top"><strong>Function</strong></th>
+<th class="tableblock halign-left valign-top"><strong>Description</strong></th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">gentype sub_group_broadcast(
+ gentype x,
+ uint sub_group_local_id )
+
+char intel_sub_group_broadcast(
+ char x,
+ uint sub_group_local_id )
+uchar intel_sub_group_broadcast(
+ uchar x,
+ uint sub_group_local_id )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Broadcasts the value of <em>x</em> for work item identified by <em>sub_group_local_id</em> (value returned by <strong>get_sub_group_local_id</strong>) to all work items in the subgroup.
+<em>sub_group_local_id</em> must be the same value for all work items in the subgroup.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">gentype sub_group_reduce_add( gentype x )
+gentype sub_group_reduce_min( gentype x )
+gentype sub_group_reduce_max( gentype x )
+
+char intel_sub_group_reduce_add( char x )
+uchar intel_sub_group_reduce_add( uchar x )
+char intel_sub_group_reduce_min( char x )
+uchar intel_sub_group_reduce_min( uchar x )
+char intel_sub_group_reduce_max( char x )
+uchar intel_sub_group_reduce_max( uchar x )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Returns the result of the specified reduction operation for all values of <em>x</em> specified by work items in a subgroup.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">gentype sub_group_scan_exclusive_add( gentype x )
+gentype sub_group_scan_exclusive_min( gentype x )
+gentype sub_group_scan_exclusive_max( gentype x )
+
+char intel_sub_group_scan_exclusive_add( char x )
+uchar intel_sub_group_scan_exclusive_add( uchar x )
+char intel_sub_group_scan_exclusive_min( char x )
+uchar intel_sub_group_scan_exclusive_min( uchar x )
+char intel_sub_group_scan_exclusive_max( char x )
+uchar intel_sub_group_scan_exclusive_max( uchar x )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Performs the specified exclusive scan operation of all values <em>x</em> specified by work items in a subgroup.
+The scan results are returned for each work item.</p>
+<p class="tableblock">The scan order is defined by increasing subgroup local ID within the subgroup.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">gentype sub_group_scan_inclusive_add( gentype x)
+gentype sub_group_scan_inclusive_min( gentype x)
+gentype sub_group_scan_inclusive_max( gentype x)
+
+char intel_sub_group_scan_inclusive_add( char x )
+uchar intel_sub_group_scan_inclusive_add( uchar x )
+char intel_sub_group_scan_inclusive_min( char x )
+uchar intel_sub_group_scan_inclusive_min( uchar x )
+char intel_sub_group_scan_inclusive_max( char x )
+uchar intel_sub_group_scan_inclusive_max( uchar x )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Performs the specified inclusive scan operation of all values <em>x</em> specified by work items in a subgroup.
+The scan results are returned for each work item.</p>
+<p class="tableblock">The scan order is defined by increasing subgroup local ID within the subgroup.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_additions_to_section_6_13_x_sub_group_shuffle_functions">Additions to Section 6.13.X - "Sub Group Shuffle Functions"</h3>
+<div class="paragraph">
+<p>This section was added by the <code>cl_intel_subgroups</code> extension.</p>
+</div>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add <code>char</code>, <code>char2</code>, <code>char4</code>, <code>char8</code>, <code>char16</code>, <code>uchar</code>, <code>uchar2</code>, <code>uchar4</code>, <code>uchar8</code>, and <code>uchar16</code> to the list of data types supported by the <code>sub_group_shuffle</code>, <code>sub_group_shuffle_down</code>, <code>sub_group_shuffle_up</code>, and <code>sub_group_shuffle_xor</code> functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p>The OpenCL C programming language implements the following built-in functions to allow data to be exchanged among work items in a subgroup.
+These built-in functions need not be encountered by all work items in a subgroup executing the kernel, however, data may only be shuffled among work items encountering the subgroup shuffle function.
+Shuffling data from a work item that does not encounter the subgroup shuffle function will produce undefined results.
+For these functions, <code>gentype</code> is <code>float</code>, <code>float2</code>, <code>float4</code>, <code>float8</code>, <code>float16</code>, <code>char</code>, <code>char2</code>, <code>char4</code>, <code>char8</code>, <code>char16</code>, <code>uchar</code>, <code>uchar2</code>, <code>uchar4</code>, <code>uchar8</code>, <code>uchar16</code>, <code>int</code>, <code>int2</code>, <code>int4</code>, <code>int8</code>, <code>int16</code>, <code>uint</code>, <code>uint2</code>, <code>uint4</code>, <code>uint8</code>, <code>uint16</code>, <code>long</code>, or <code>ulong</code>.</p>
+</div>
+<div class="paragraph">
+<p>If <code>cl_khr_fp16</code> is supported, <code>gentype</code> also includes <code>half</code>.</p>
+</div>
+<div class="paragraph">
+<p>If <code>cl_khr_fp64</code> or doubles are supported, <code>gentype</code> also includes <code>double</code>.</p>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_modifications_to_section_6_13_x_sub_group_read_and_write_functions">Modifications to Section 6.13.X "Sub Group Read and Write Functions"</h3>
+<div class="paragraph">
+<p>This section was added by the <code>cl_intel_subgroups</code> extension.</p>
+</div>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add suffixed aliases of the previously un-suffixed 32-bit block read and write functions. There is no change to the description or behavior of these functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 55.5555%;">
+<col style="width: 44.4445%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top"><strong>Function</strong></th>
+<th class="tableblock halign-left valign-top"><strong>Description</strong></th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">uint intel_sub_group_block_read(
+ const __global uint* p )
+uint2 intel_sub_group_block_read2(
+ const __global uint* p )
+uint4 intel_sub_group_block_read4(
+ const __global uint* p )
+uint8 intel_sub_group_block_read8(
+ const __global uint* p )
+
+uint intel_sub_group_block_read_ui(
+ const __global uint* p )
+uint2 intel_sub_group_block_read_ui2(
+ const __global uint* p )
+uint4 intel_sub_group_block_read_ui4(
+ const __global uint* p )
+uint8 intel_sub_group_block_read_ui8(
+ const __global uint* p )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, or 8 uints of data for each work item in the subgroup from the specified pointer as a block operation…​</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">uint intel_sub_group_block_read(
+ image2d_t image,
+ int2 byte_coord )
+uint2 intel_sub_group_block_read2(
+ image2d_t image,
+ int2 byte_coord )
+uint4 intel_sub_group_block_read4(
+ image2d_t image,
+ int2 byte_coord )
+uint8 intel_sub_group_block_read8(
+ image2d_t image,
+ int2 byte_coord )
+
+uint intel_sub_group_block_read_ui(
+ image2d_t image,
+ int2 byte_coord )
+uint2 intel_sub_group_block_read_ui2(
+ image2d_t image,
+ int2 byte_coord )
+uint4 intel_sub_group_block_read_ui4(
+ image2d_t image,
+ int2 byte_coord )
+uint8 intel_sub_group_block_read_ui8(
+ image2d_t image,
+ int2 byte_coord )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, or 8 uints of data for each work item in the subgroup from the specified image at the specified coordinate as a block operation…​</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write(
+ __global uint* p, uint data )
+void intel_sub_group_block_write2(
+ __global uint* p, uint2 data )
+void intel_sub_group_block_write4(
+ __global uint* p, uint4 data )
+void intel_sub_group_block_write8(
+ __global uint* p, uint8 data )
+
+void intel_sub_group_block_write_ui(
+ __global uint* p, uint data )
+void intel_sub_group_block_write_ui2(
+ __global uint* p, uint2 data )
+void intel_sub_group_block_write_ui4(
+ __global uint* p, uint4 data )
+void intel_sub_group_block_write_ui8(
+ __global uint* p, uint8 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, or 8 uints of data for each work item in the subgroup to the specified pointer as a block operation…​</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write(
+ image2d_t image,
+ int2 byte_coord, uint data )
+void intel_sub_group_block_write2(
+ image2d_t image,
+ int2 byte_coord, uint2 data )
+void intel_sub_group_block_write4(
+ image2d_t image,
+ int2 byte_coord, uint4 data )
+void intel_sub_group_block_write8(
+ image2d_t image,
+ int2 byte_coord, uint8 data )
+
+void intel_sub_group_block_write_ui(
+ image2d_t image,
+ int2 byte_coord, uint data )
+void intel_sub_group_block_write_ui2(
+ image2d_t image,
+ int2 byte_coord, uint2 data )
+void intel_sub_group_block_write_ui4(
+ image2d_t image,
+ int2 byte_coord, uint4 data )
+void intel_sub_group_block_write_ui8(
+ image2d_t image,
+ int2 byte_coord, uint8 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, or 8 uints of data for each work item in the subgroup to the specified image at the specified coordinate as a block operation…​</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">Also, add <code>uchar</code> variants of the block read and write functions. In the descriptions of these functions, the "note below describing out-of-bounds behavior" is in the <code>cl_intel_subgroups</code> extension specification: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 55.5555%;">
+<col style="width: 44.4445%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top"><strong>Function</strong></th>
+<th class="tableblock halign-left valign-top"><strong>Description</strong></th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">uchar intel_sub_group_block_read_uc(
+ const __global uchar* p )
+uchar2 intel_sub_group_block_read_uc2(
+ const __global uchar* p )
+uchar4 intel_sub_group_block_read_uc4(
+ const __global uchar* p )
+uchar8 intel_sub_group_block_read_uc8(
+ const __global uchar* p )
+uchar16 intel_sub_group_block_read_uc16(
+ const __global uchar* p )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, 8, or 16 uchars of data for each work item in the subgroup from the specified pointer as a block operation.
+The data is read strided, so the first value read is:</p>
+<p class="tableblock"><code>p[ sub_group_local_id ]</code></p>
+<p class="tableblock">and the second value read is:</p>
+<p class="tableblock"><code>p[ sub_group_local_id + max_sub_group_size ]</code></p>
+<p class="tableblock">etc.</p>
+<p class="tableblock"><em>p</em> must be aligned to a 32-bit (4-byte) boundary.</p>
+<p class="tableblock">There is no defined out-of-range behavior for these functions.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">uchar intel_sub_group_block_read_uc(
+ image2d_t image,
+ int2 byte_coord )
+uchar2 intel_sub_group_block_read_uc2(
+ image2d_t image,
+ int2 byte_coord )
+uchar4 intel_sub_group_block_read_uc4(
+ image2d_t image,
+ int2 byte_coord )
+uchar8 intel_sub_group_block_read_uc8(
+ image2d_t image,
+ int2 byte_coord )
+uchar16 intel_sub_group_block_read_uc16(
+ image2d_t image,
+ int2 byte_coord )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, 8, or 16 uchars of data for each work item in the subgroup from the specified <em>image</em> at the specified coordinate as a block operation.
+Note that the coordinate is a byte coordinate, not an image element coordinate.
+Also note that the image data is read without format conversion, so each work item may read multiple image elements
+(for images with element size smaller than 8-bits).</p>
+<p class="tableblock">The data is read row-by-row, so the first value read is from the row specified in the y-component of the provided <em>byte_coord</em>, the second value is read from the y-component of the provided <em>byte_coord</em> plus one, etc.</p>
+<p class="tableblock">Please see the note below describing out-of-bounds behavior for these functions.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write_uc(
+ __global uchar* p, uchar data )
+void intel_sub_group_block_write_uc2(
+ __global uchar* p, uchar2 data )
+void intel_sub_group_block_write_uc4(
+ __global uchar* p, uchar4 data )
+void intel_sub_group_block_write_uc8(
+ __global uchar* p, uchar8 data )
+void intel_sub_group_block_write_uc16(
+ __global uchar* p, uchar16 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, 8, or 16 uchars of data for each work item in the subgroup to the specified pointer as a block operation.
+The data is written strided, so the first value is written to:</p>
+<p class="tableblock"><code>p[ sub_group_local_id ]</code></p>
+<p class="tableblock">and the second value is written to:</p>
+<p class="tableblock"><code>p[ sub_group_local_id + max_sub_group_size ]</code></p>
+<p class="tableblock">etc.</p>
+<p class="tableblock"><em>p</em> must be aligned to a 128-bit (16-byte) boundary.</p>
+<p class="tableblock">There is no defined out-of-range behavior for these functions.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write_uc(
+ image2d_t image,
+ int2 byte_coord, uchar data )
+void intel_sub_group_block_write_uc2(
+ image2d_t image,
+ int2 byte_coord, uchar2 data )
+void intel_sub_group_block_write_uc4(
+ image2d_t image,
+ int2 byte_coord, uchar4 data )
+void intel_sub_group_block_write_uc8(
+ image2d_t image,
+ int2 byte_coord, uchar8 data )
+void intel_sub_group_block_write_uc16(
+ image2d_t image,
+ int2 byte_coord, uchar16 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, 8, or 16 uchars of data for each work item in the subgroup to the specified <em>image</em> at the specified coordinate as a block operation.
+Note that the coordinate is a byte coordinate, not an image element coordinate.
+Unlike the image block read function, which may read from any arbitrary byte offset, the x-component of the byte coordinate for the image block write functions must be a multiple of four;
+in other words, the write must begin at 32-bit boundary.
+There is no restriction on the y-component of the coordinate.
+Also, note that the image <em>data</em> is written without format conversion, so each work item may write multiple image elements (for images with element size smaller than 8-bits).</p>
+<p class="tableblock">The data is written row-by-row, so the first value written is from the row specified by the y-component of the provided <em>byte_coord</em>, the second value is written from the y-component of the provided <em>byte_coord</em> plus one, etc.</p>
+<p class="tableblock">Please see the note below describing out-of-bounds behavior for these functions.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_spir_v_environment_specification">Modifications to the OpenCL SPIR-V Environment Specification</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The section numbers below refer to sections added by the <code>cl_intel_spirv_subgroups</code> extension.</p>
+</div>
+<div class="paragraph">
+<p>Note that the restrictions described in Section 7.1.X.3 - <em>Notes and Restrictions</em> in the <code>cl_intel_spirv_subgroups</code> extension are unchanged and continue to apply for this extension.</p>
+</div>
+<div class="sect2">
+<h3 id="_add_to_section_7_1_x_cl_intel_spirv_subgroups">Add to Section 7.1.X - <code>cl_intel_spirv_subgroups</code></h3>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add to the end of this section: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p>If the OpenCL environment supports the extension <code>cl_intel_subgroups_char</code>, then additional types are valid for the following <strong>Groups</strong> instructions with <em>Scope</em> for <em>Execution</em> equal to <strong>Subgroup</strong>:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p><strong>OpGroupBroadcast</strong></p>
+</li>
+<li>
+<p><strong>OpGroupIAdd</strong></p>
+</li>
+<li>
+<p><strong>OpGroupSMin</strong>, <strong>OpGroupUMin</strong></p>
+</li>
+<li>
+<p><strong>OpGroupSMax</strong>, <strong>OpGroupUMax</strong></p>
+</li>
+</ul>
+</div>
+<div class="paragraph">
+<p>For these instructions, valid types for <em>Value</em> are:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Scalars of <strong>OpTypeInt</strong> with a <em>Width</em> of 8 bits and <em>Signedness</em> of 0 (equivalent to <code>char</code> and <code>uchar</code>)</p>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_add_to_section_7_1_x_1_shuffle_instruction">Add to Section 7.1.X.1 - Shuffle Instruction</h3>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add to the end of this section: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p>Additionally, if the OpenCL environment supports the extension <code>cl_intel_subgroups_char</code>:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Scalars and <strong>OpTypeVectors</strong> with 2, 3, 4, 8, or 16 <em>Component Count</em> components of the following <em>Component Type</em> types:</p>
+<div class="ulist">
+<ul>
+<li>
+<p><strong>OpTypeInt</strong> with a <em>Width</em> of 8 bits and <em>Signedness</em> of 0 (equivalent to <code>char</code> and <code>uchar</code>)</p>
+</li>
+</ul>
+</div>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_add_to_section_7_1_x_2_block_io_instructions">Add to Section 7.1.X.2 - Block IO Instructions</h3>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add to the description of supported types in this section: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p>Additionally, if the OpenCL environment supports the extension <code>cl_intel_subgroups_char</code>:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Scalars and <strong>OpTypeVectors</strong> with 2, 4, 8, or 16 <em>Component Count</em> components of the following <em>Component Type</em> types:</p>
+<div class="ulist">
+<ul>
+<li>
+<p><strong>OpTypeInt</strong> with a <em>Width</em> of 8 bits and <em>Signedness</em> of 0 (equivalent to <code>char</code> and <code>uchar</code>)</p>
+</li>
+</ul>
+</div>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_issues">Issues</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_revision_history">Revision History</h2>
+<div class="sectionbody">
+<table class="tableblock frame-all grid-rows stretch">
+<colgroup>
+<col style="width: 4.7619%;">
+<col style="width: 14.2857%;">
+<col style="width: 14.2857%;">
+<col style="width: 66.6667%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Rev</th>
+<th class="tableblock halign-left valign-top">Date</th>
+<th class="tableblock halign-left valign-top">Author</th>
+<th class="tableblock halign-left valign-top">Changes</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">1</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2020-03-13</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Ben Ashbaugh</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><strong>First public revision.</strong></p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Version V2.2-11-93-g2eccabe<br>
+Last updated 2020-03-13 13:09:47 -0700
+</div>
+</div>
+
+<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.4/MathJax.js?config=TeX-MML-AM_HTMLorMML"></script>
+</body>
+</html>
\ No newline at end of file
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+.vcard .fn { font-weight: bold; font-size: 0.9375em; }
+
+.vevent .summary { font-weight: bold; }
+.vevent abbr { cursor: auto; text-decoration: none; font-weight: bold; border: none; padding: 0 0.0625em; }
+
+@media only screen and (min-width: 768px) { h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { line-height: 1.4; }
+ h1 { font-size: 2.75em; }
+ h2 { font-size: 2.3125em; }
+ h3, #toctitle, .sidebarblock > .content > .title { font-size: 1.6875em; }
+ h4 { font-size: 1.4375em; } }
+/* Tables */
+table { background: white; margin-bottom: 1.25em; border: solid 1px #d8d8ce; }
+table thead, table tfoot { background: -webkit-linear-gradient(top, #add386, #90b66a); font-weight: bold; }
+table thead tr th, table thead tr td, table tfoot tr th, table tfoot tr td { padding: 0.5em 0.625em 0.625em; font-size: inherit; color: white; text-align: left; }
+table tr th, table tr td { padding: 0.5625em 0.625em; font-size: inherit; color: #6d6e71; }
+table tr.even, table tr.alt, table tr:nth-of-type(even) { background: #edf2f2; }
+table thead tr th, table tfoot tr th, table tbody tr td, table tr td, table tfoot tr td { display: table-cell; line-height: 1.4; }
+
+body { -moz-osx-font-smoothing: grayscale; -webkit-font-smoothing: antialiased; tab-size: 4; }
+
+h1, h2, h3, #toctitle, .sidebarblock > .content > .title, h4, h5, h6 { line-height: 1.4; }
+
+a:hover, a:focus { text-decoration: underline; }
+
+.clearfix:before, .clearfix:after, .float-group:before, .float-group:after { content: " "; display: table; }
+.clearfix:after, .float-group:after { clear: both; }
+
+*:not(pre) > code { font-size: inherit; font-style: normal !important; letter-spacing: 0; padding: 0; background-color: white; -webkit-border-radius: 0; border-radius: 0; line-height: inherit; word-wrap: break-word; }
+*:not(pre) > code.nobreak { word-wrap: normal; }
+*:not(pre) > code.nowrap { white-space: nowrap; }
+
+pre, pre > code { line-height: 1.6; color: #264357; font-family: Consolas, "Liberation Mono", Courier, monospace; font-weight: normal; }
+
+em em { font-style: normal; }
+
+strong strong { font-weight: normal; }
+
+.keyseq { color: #333333; }
+
+kbd { font-family: Consolas, "Liberation Mono", Courier, monospace; display: inline-block; color: black; font-size: 0.65em; line-height: 1.45; background-color: #f7f7f7; border: 1px solid #ccc; -webkit-border-radius: 3px; border-radius: 3px; -webkit-box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; box-shadow: 0 1px 0 rgba(0, 0, 0, 0.2), 0 0 0 0.1em white inset; margin: 0 0.15em; padding: 0.2em 0.5em; vertical-align: middle; position: relative; top: -0.1em; white-space: nowrap; }
+
+.keyseq kbd:first-child { margin-left: 0; }
+
+.keyseq kbd:last-child { margin-right: 0; }
+
+.menuseq, .menuref { color: #000; }
+
+.menuseq b:not(.caret), .menuref { font-weight: inherit; }
+
+.menuseq { word-spacing: -0.02em; }
+.menuseq b.caret { font-size: 1.25em; line-height: 0.8; }
+.menuseq i.caret { font-weight: bold; text-align: center; width: 0.45em; }
+
+b.button:before, b.button:after { position: relative; top: -1px; font-weight: normal; }
+
+b.button:before { content: "["; padding: 0 3px 0 2px; }
+
+b.button:after { content: "]"; padding: 0 2px 0 3px; }
+
+#header, #content, #footnotes, #footer { width: 100%; margin-left: auto; margin-right: auto; margin-top: 0; margin-bottom: 0; max-width: 62.5em; *zoom: 1; position: relative; padding-left: 1.5em; padding-right: 1.5em; }
+#header:before, #header:after, #content:before, #content:after, #footnotes:before, #footnotes:after, #footer:before, #footer:after { content: " "; display: table; }
+#header:after, #content:after, #footnotes:after, #footer:after { clear: both; }
+
+#content { margin-top: 1.25em; }
+
+#content:before { content: none; }
+
+#header > h1:first-child { color: black; margin-top: 2.25rem; margin-bottom: 0; }
+#header > h1:first-child + #toc { margin-top: 8px; border-top: 1px solid #dddddd; }
+#header > h1:only-child, body.toc2 #header > h1:nth-last-child(2) { border-bottom: 1px solid #dddddd; padding-bottom: 8px; }
+#header .details { border-bottom: 1px solid #dddddd; line-height: 1.45; padding-top: 0.25em; padding-bottom: 0.25em; padding-left: 0.25em; color: #5e93b8; display: -ms-flexbox; display: -webkit-flex; display: flex; -ms-flex-flow: row wrap; -webkit-flex-flow: row wrap; flex-flow: row wrap; }
+#header .details span:first-child { margin-left: -0.125em; }
+#header .details span.email a { color: #333333; }
+#header .details br { display: none; }
+#header .details br + span:before { content: "\00a0\2013\00a0"; }
+#header .details br + span.author:before { content: "\00a0\22c5\00a0"; color: #333333; }
+#header .details br + span#revremark:before { content: "\00a0|\00a0"; }
+#header #revnumber { text-transform: capitalize; }
+#header #revnumber:after { content: "\00a0"; }
+
+#content > h1:first-child:not([class]) { color: black; border-bottom: 1px solid #dddddd; padding-bottom: 8px; margin-top: 0; padding-top: 1rem; margin-bottom: 1.25rem; }
+
+#toc { border-bottom: 0 solid #dddddd; padding-bottom: 0.5em; }
+#toc > ul { margin-left: 0.125em; }
+#toc ul.sectlevel0 > li > a { font-style: italic; }
+#toc ul.sectlevel0 ul.sectlevel1 { margin: 0.5em 0; }
+#toc ul { font-family: Noto, sans-serif; list-style-type: none; }
+#toc li { line-height: 1.3334; margin-top: 0.3334em; }
+#toc a { text-decoration: none; }
+#toc a:active { text-decoration: underline; }
+
+#toctitle { color: black; font-size: 1.2em; }
+
+@media only screen and (min-width: 768px) { #toctitle { font-size: 1.375em; }
+ body.toc2 { padding-left: 15em; padding-right: 0; }
+ #toc.toc2 { margin-top: 0 !important; background-color: white; position: fixed; width: 15em; left: 0; top: 0; border-right: 1px solid #dddddd; border-top-width: 0 !important; border-bottom-width: 0 !important; z-index: 1000; padding: 1.25em 1em; height: 100%; overflow: auto; }
+ #toc.toc2 #toctitle { margin-top: 0; margin-bottom: 0.8rem; font-size: 1.2em; }
+ #toc.toc2 > ul { font-size: 0.9em; margin-bottom: 0; }
+ #toc.toc2 ul ul { margin-left: 0; padding-left: 1em; }
+ #toc.toc2 ul.sectlevel0 ul.sectlevel1 { padding-left: 0; margin-top: 0.5em; margin-bottom: 0.5em; }
+ body.toc2.toc-right { padding-left: 0; padding-right: 15em; }
+ body.toc2.toc-right #toc.toc2 { border-right-width: 0; border-left: 1px solid #dddddd; left: auto; right: 0; } }
+@media only screen and (min-width: 1280px) { body.toc2 { padding-left: 20em; padding-right: 0; }
+ #toc.toc2 { width: 20em; }
+ #toc.toc2 #toctitle { font-size: 1.375em; }
+ #toc.toc2 > ul { font-size: 0.95em; }
+ #toc.toc2 ul ul { padding-left: 1.25em; }
+ body.toc2.toc-right { padding-left: 0; padding-right: 20em; } }
+#content #toc { border-style: solid; border-width: 1px; border-color: #e6e6e6; margin-bottom: 1.25em; padding: 1.25em; background: white; -webkit-border-radius: 0; border-radius: 0; }
+#content #toc > :first-child { margin-top: 0; }
+#content #toc > :last-child { margin-bottom: 0; }
+
+#footer { max-width: 100%; background-color: none; padding: 1.25em; }
+
+#footer-text { color: black; line-height: 1.44; }
+
+#content { margin-bottom: 0.625em; }
+
+.sect1 { padding-bottom: 0.625em; }
+
+@media only screen and (min-width: 768px) { #content { margin-bottom: 1.25em; }
+ .sect1 { padding-bottom: 1.25em; } }
+.sect1:last-child { padding-bottom: 0; }
+
+.sect1 + .sect1 { border-top: 0 solid #dddddd; }
+
+#content h1 > a.anchor, h2 > a.anchor, h3 > a.anchor, #toctitle > a.anchor, .sidebarblock > .content > .title > a.anchor, h4 > a.anchor, h5 > a.anchor, h6 > a.anchor { position: absolute; z-index: 1001; width: 1.5ex; margin-left: -1.5ex; display: block; text-decoration: none !important; visibility: hidden; text-align: center; font-weight: normal; }
+#content h1 > a.anchor:before, h2 > a.anchor:before, h3 > a.anchor:before, #toctitle > a.anchor:before, .sidebarblock > .content > .title > a.anchor:before, h4 > a.anchor:before, h5 > a.anchor:before, h6 > a.anchor:before { content: "\00A7"; font-size: 0.85em; display: block; padding-top: 0.1em; }
+#content h1:hover > a.anchor, #content h1 > a.anchor:hover, h2:hover > a.anchor, h2 > a.anchor:hover, h3:hover > a.anchor, #toctitle:hover > a.anchor, .sidebarblock > .content > .title:hover > a.anchor, h3 > a.anchor:hover, #toctitle > a.anchor:hover, .sidebarblock > .content > .title > a.anchor:hover, h4:hover > a.anchor, h4 > a.anchor:hover, h5:hover > a.anchor, h5 > a.anchor:hover, h6:hover > a.anchor, h6 > a.anchor:hover { visibility: visible; }
+#content h1 > a.link, h2 > a.link, h3 > a.link, #toctitle > a.link, .sidebarblock > .content > .title > a.link, h4 > a.link, h5 > a.link, h6 > a.link { color: black; text-decoration: none; }
+#content h1 > a.link:hover, h2 > a.link:hover, h3 > a.link:hover, #toctitle > a.link:hover, .sidebarblock > .content > .title > a.link:hover, h4 > a.link:hover, h5 > a.link:hover, h6 > a.link:hover { color: black; }
+
+.audioblock, .imageblock, .literalblock, .listingblock, .stemblock, .videoblock { margin-bottom: 1.25em; }
+
+.admonitionblock td.content > .title, .audioblock > .title, .exampleblock > .title, .imageblock > .title, .listingblock > .title, .literalblock > .title, .stemblock > .title, .openblock > .title, .paragraph > .title, .quoteblock > .title, table.tableblock > .title, .verseblock > .title, .videoblock > .title, .dlist > .title, .olist > .title, .ulist > .title, .qlist > .title, .hdlist > .title { text-rendering: optimizeLegibility; text-align: left; }
+
+table.tableblock > caption.title { white-space: nowrap; overflow: visible; max-width: 0; }
+
+.paragraph.lead > p, #preamble > .sectionbody > .paragraph:first-of-type p { color: black; }
+
+table.tableblock #preamble > .sectionbody > .paragraph:first-of-type p { font-size: inherit; }
+
+.admonitionblock > table { border-collapse: separate; border: 0; background: none; width: 100%; }
+.admonitionblock > table td.icon { text-align: center; width: 80px; }
+.admonitionblock > table td.icon img { max-width: initial; }
+.admonitionblock > table td.icon .title { font-weight: bold; font-family: Noto, sans-serif; text-transform: uppercase; }
+.admonitionblock > table td.content { padding-left: 1.125em; padding-right: 1.25em; border-left: 1px solid #dddddd; color: #5e93b8; }
+.admonitionblock > table td.content > :last-child > :last-child { margin-bottom: 0; }
+
+.exampleblock > .content { border-style: solid; border-width: 1px; border-color: #e6e6e6; margin-bottom: 1.25em; padding: 1.25em; background: white; -webkit-border-radius: 0; border-radius: 0; }
+.exampleblock > .content > :first-child { margin-top: 0; }
+.exampleblock > .content > :last-child { margin-bottom: 0; }
+
+.sidebarblock { border-style: solid; border-width: 1px; border-color: #e6e6e6; margin-bottom: 1.25em; padding: 1.25em; background: white; -webkit-border-radius: 0; border-radius: 0; }
+.sidebarblock > :first-child { margin-top: 0; }
+.sidebarblock > :last-child { margin-bottom: 0; }
+.sidebarblock > .content > .title { color: black; margin-top: 0; }
+
+.exampleblock > .content > :last-child > :last-child, .exampleblock > .content .olist > ol > li:last-child > :last-child, .exampleblock > .content .ulist > ul > li:last-child > :last-child, .exampleblock > .content .qlist > ol > li:last-child > :last-child, .sidebarblock > .content > :last-child > :last-child, .sidebarblock > .content .olist > ol > li:last-child > :last-child, .sidebarblock > .content .ulist > ul > li:last-child > :last-child, .sidebarblock > .content .qlist > ol > li:last-child > :last-child { margin-bottom: 0; }
+
+.literalblock pre, .listingblock pre:not(.highlight), .listingblock pre[class="highlight"], .listingblock pre[class^="highlight "], .listingblock pre.CodeRay, .listingblock pre.prettyprint { background: #eeeeee; }
+.sidebarblock .literalblock pre, .sidebarblock .listingblock pre:not(.highlight), .sidebarblock .listingblock pre[class="highlight"], .sidebarblock .listingblock pre[class^="highlight "], .sidebarblock .listingblock pre.CodeRay, .sidebarblock .listingblock pre.prettyprint { background: #f2f1f1; }
+
+.literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { border: 1px hidden #666666; -webkit-border-radius: 0; border-radius: 0; word-wrap: break-word; padding: 1.25em 1.5625em 1.125em 1.5625em; font-size: 0.8125em; }
+.literalblock pre.nowrap, .literalblock pre[class].nowrap, .listingblock pre.nowrap, .listingblock pre[class].nowrap { overflow-x: auto; white-space: pre; word-wrap: normal; }
+@media only screen and (min-width: 768px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 0.90625em; } }
+@media only screen and (min-width: 1280px) { .literalblock pre, .literalblock pre[class], .listingblock pre, .listingblock pre[class] { font-size: 1em; } }
+
+.literalblock.output pre { color: #eeeeee; background-color: #264357; }
+
+.listingblock pre.highlightjs { padding: 0; }
+.listingblock pre.highlightjs > code { padding: 1.25em 1.5625em 1.125em 1.5625em; -webkit-border-radius: 0; border-radius: 0; }
+
+.listingblock > .content { position: relative; }
+
+.listingblock code[data-lang]:before { display: none; content: attr(data-lang); position: absolute; font-size: 0.75em; top: 0.425rem; right: 0.5rem; line-height: 1; text-transform: uppercase; color: #999; }
+
+.listingblock:hover code[data-lang]:before { display: block; }
+
+.listingblock.terminal pre .command:before { content: attr(data-prompt); padding-right: 0.5em; color: #999; }
+
+.listingblock.terminal pre .command:not([data-prompt]):before { content: "$"; }
+
+table.pyhltable { border-collapse: separate; border: 0; margin-bottom: 0; background: none; }
+
+table.pyhltable td { vertical-align: top; padding-top: 0; padding-bottom: 0; line-height: 1.6; }
+
+table.pyhltable td.code { padding-left: .75em; padding-right: 0; }
+
+pre.pygments .lineno, table.pyhltable td:not(.code) { color: #999; padding-left: 0; padding-right: .5em; border-right: 1px solid #dddddd; }
+
+pre.pygments .lineno { display: inline-block; margin-right: .25em; }
+
+table.pyhltable .linenodiv { background: none !important; padding-right: 0 !important; }
+
+.quoteblock { margin: 0 1em 0.75em 1.5em; display: table; }
+.quoteblock > .title { margin-left: -1.5em; margin-bottom: 0.75em; }
+.quoteblock blockquote, .quoteblock blockquote p { color: #333333; font-size: 1.15rem; line-height: 1.75; word-spacing: 0.1em; letter-spacing: 0; font-style: italic; text-align: justify; }
+.quoteblock blockquote { margin: 0; padding: 0; border: 0; }
+.quoteblock blockquote:before { content: "\201c"; float: left; font-size: 2.75em; font-weight: bold; line-height: 0.6em; margin-left: -0.6em; color: black; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1); }
+.quoteblock blockquote > .paragraph:last-child p { margin-bottom: 0; }
+.quoteblock .attribution { margin-top: 0.5em; margin-right: 0.5ex; text-align: right; }
+.quoteblock .quoteblock { margin-left: 0; margin-right: 0; padding: 0.5em 0; border-left: 3px solid #5e93b8; }
+.quoteblock .quoteblock blockquote { padding: 0 0 0 0.75em; }
+.quoteblock .quoteblock blockquote:before { display: none; }
+
+.verseblock { margin: 0 1em 0.75em 1em; }
+.verseblock pre { font-family: "Open Sans", "DejaVu Sans", sans; font-size: 1.15rem; color: #333333; font-weight: 300; text-rendering: optimizeLegibility; }
+.verseblock pre strong { font-weight: 400; }
+.verseblock .attribution { margin-top: 1.25rem; margin-left: 0.5ex; }
+
+.quoteblock .attribution, .verseblock .attribution { font-size: 0.8125em; line-height: 1.45; font-style: italic; }
+.quoteblock .attribution br, .verseblock .attribution br { display: none; }
+.quoteblock .attribution cite, .verseblock .attribution cite { display: block; letter-spacing: -0.025em; color: #5e93b8; }
+
+.quoteblock.abstract { margin: 0 0 0.75em 0; display: block; }
+.quoteblock.abstract blockquote, .quoteblock.abstract blockquote p { text-align: left; word-spacing: 0; }
+.quoteblock.abstract blockquote:before, .quoteblock.abstract blockquote p:first-of-type:before { display: none; }
+
+table.tableblock { max-width: 100%; border-collapse: separate; }
+table.tableblock td > .paragraph:last-child p > p:last-child, table.tableblock th > p:last-child, table.tableblock td > p:last-child { margin-bottom: 0; }
+
+table.tableblock, th.tableblock, td.tableblock { border: 0 solid #d8d8ce; }
+
+table.grid-all > thead > tr > .tableblock, table.grid-all > tbody > tr > .tableblock { border-width: 0 1px 1px 0; }
+
+table.grid-all > tfoot > tr > .tableblock { border-width: 1px 1px 0 0; }
+
+table.grid-cols > * > tr > .tableblock { border-width: 0 1px 0 0; }
+
+table.grid-rows > thead > tr > .tableblock, table.grid-rows > tbody > tr > .tableblock { border-width: 0 0 1px 0; }
+
+table.grid-rows > tfoot > tr > .tableblock { border-width: 1px 0 0 0; }
+
+table.grid-all > * > tr > .tableblock:last-child, table.grid-cols > * > tr > .tableblock:last-child { border-right-width: 0; }
+
+table.grid-all > tbody > tr:last-child > .tableblock, table.grid-all > thead:last-child > tr > .tableblock, table.grid-rows > tbody > tr:last-child > .tableblock, table.grid-rows > thead:last-child > tr > .tableblock { border-bottom-width: 0; }
+
+table.frame-all { border-width: 1px; }
+
+table.frame-sides { border-width: 0 1px; }
+
+table.frame-topbot { border-width: 1px 0; }
+
+th.halign-left, td.halign-left { text-align: left; }
+
+th.halign-right, td.halign-right { text-align: right; }
+
+th.halign-center, td.halign-center { text-align: center; }
+
+th.valign-top, td.valign-top { vertical-align: top; }
+
+th.valign-bottom, td.valign-bottom { vertical-align: bottom; }
+
+th.valign-middle, td.valign-middle { vertical-align: middle; }
+
+table thead th, table tfoot th { font-weight: bold; }
+
+tbody tr th { display: table-cell; line-height: 1.4; background: -webkit-linear-gradient(top, #add386, #90b66a); }
+
+tbody tr th, tbody tr th p, tfoot tr th, tfoot tr th p { color: white; font-weight: bold; }
+
+p.tableblock > code:only-child { background: none; padding: 0; }
+
+p.tableblock { font-size: 1em; }
+
+td > div.verse { white-space: pre; }
+
+ol { margin-left: 1.75em; }
+
+ul li ol { margin-left: 1.5em; }
+
+dl dd { margin-left: 1.125em; }
+
+dl dd:last-child, dl dd:last-child > :last-child { margin-bottom: 0; }
+
+ol > li p, ul > li p, ul dd, ol dd, .olist .olist, .ulist .ulist, .ulist .olist, .olist .ulist { margin-bottom: 0.375em; }
+
+ul.checklist, ul.none, ol.none, ul.no-bullet, ol.no-bullet, ol.unnumbered, ul.unstyled, ol.unstyled { list-style-type: none; }
+
+ul.no-bullet, ol.no-bullet, ol.unnumbered { margin-left: 0.625em; }
+
+ul.unstyled, ol.unstyled { margin-left: 0; }
+
+ul.checklist { margin-left: 0.625em; }
+
+ul.checklist li > p:first-child > .fa-square-o:first-child, ul.checklist li > p:first-child > .fa-check-square-o:first-child { width: 1.25em; font-size: 0.8em; position: relative; bottom: 0.125em; }
+
+ul.checklist li > p:first-child > input[type="checkbox"]:first-child { margin-right: 0.25em; }
+
+ul.inline { display: -ms-flexbox; display: -webkit-box; display: flex; -ms-flex-flow: row wrap; -webkit-flex-flow: row wrap; flex-flow: row wrap; list-style: none; margin: 0 0 0.375em -0.75em; }
+
+ul.inline > li { margin-left: 0.75em; }
+
+.unstyled dl dt { font-weight: normal; font-style: normal; }
+
+ol.arabic { list-style-type: decimal; }
+
+ol.decimal { list-style-type: decimal-leading-zero; }
+
+ol.loweralpha { list-style-type: lower-alpha; }
+
+ol.upperalpha { list-style-type: upper-alpha; }
+
+ol.lowerroman { list-style-type: lower-roman; }
+
+ol.upperroman { list-style-type: upper-roman; }
+
+ol.lowergreek { list-style-type: lower-greek; }
+
+.hdlist > table, .colist > table { border: 0; background: none; }
+.hdlist > table > tbody > tr, .colist > table > tbody > tr { background: none; }
+
+td.hdlist1, td.hdlist2 { vertical-align: top; padding: 0 0.625em; }
+
+td.hdlist1 { font-weight: bold; padding-bottom: 0.75em; }
+
+.literalblock + .colist, .listingblock + .colist { margin-top: -0.5em; }
+
+.colist > table tr > td:first-of-type { padding: 0.4em 0.75em 0 0.75em; line-height: 1; vertical-align: top; }
+.colist > table tr > td:first-of-type img { max-width: initial; }
+.colist > table tr > td:last-of-type { padding: 0.25em 0; }
+
+.thumb, .th { line-height: 0; display: inline-block; border: solid 4px white; -webkit-box-shadow: 0 0 0 1px #dddddd; box-shadow: 0 0 0 1px #dddddd; }
+
+.imageblock.left, .imageblock[style*="float: left"] { margin: 0.25em 0.625em 1.25em 0; }
+.imageblock.right, .imageblock[style*="float: right"] { margin: 0.25em 0 1.25em 0.625em; }
+.imageblock > .title { margin-bottom: 0; }
+.imageblock.thumb, .imageblock.th { border-width: 6px; }
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+</script></head>
+<body class="book">
+<div id="header">
+<h1>cl_intel_subgroups_long</h1>
+<div class="details">
+<span id="revnumber">version V2.2-11-93-g2eccabe,</span>
+<span id="revdate">Fri, 13 Mar 2020 20:13:54 +0000</span>
+<br><span id="revremark">from git branch: cl_intel_subgroups_char_long commit: 2eccabe9a2ee707c76ba080b99c0edfe95f199a1</span>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_name_strings">Name Strings</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><code>cl_intel_subgroups_long</code></p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contact">Contact</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Ben Ashbaugh, Intel (ben 'dot' ashbaugh 'at' intel 'dot' com)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_contributors">Contributors</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Ben Ashbaugh, Intel<br>
+Konrad Trifunovic, Intel</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_notice">Notice</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Copyright (c) 2020 Intel Corporation. All rights reserved.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_status">Status</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Final Draft</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_version">Version</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Built On: 2020-03-13<br>
+Revision: 1</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_dependencies">Dependencies</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>OpenCL 1.2 and support for <code>cl_intel_subgroups</code> is required.
+This extension is written against the OpenCL API Specification Version 2.2 (revision v2.2-7), against the OpenCL C Language Specification Version 2.0 (revision v2.2-7), and against version 4 of the <code>cl_intel_subgroups</code> specification.</p>
+</div>
+<div class="paragraph">
+<p>This extension requires OpenCL support for SPIR-V, either via OpenCL 2.1 or via the <code>cl_khr_il_program</code> extension.</p>
+</div>
+<div class="paragraph">
+<p>This extension interacts with the <code>cl_intel_spirv_subgroups</code> extension.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_overview">Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The goal of this extension is to allow programmers to improve the performance of applications operating on 64-bit data types by extending the subgroup functions described in the <code>cl_intel_subgroups</code> extension to support 64-bit integer data types (<code>longs</code> and <code>ulongs</code>).
+Specifically, the extension:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Extends the Intel subgroup block read and write functions to allow reading and writing 64-bit integer data from images and buffers.</p>
+</li>
+</ul>
+</div>
+<div class="paragraph">
+<p>Note that <code>cl_intel_subgroups</code> and <code>cl_khr_subgroups</code> already support broadcasts, scans, and reductions for 64-bit integer types, and that <code>cl_intel_subgroups</code> already supports shuffles for 64-bit integer types.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_functions">New API Functions</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_api_enums">New API Enums</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_new_opencl_c_functions">New OpenCL C Functions</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add <code>ulong</code> variants of the subgroup block read and write functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="listingblock">
+<div class="content">
+<pre class="highlight"><code>ulong intel_sub_group_block_read_ul( const __global ulong* p )
+ulong2 intel_sub_group_block_read_ul2( const __global ulong* p )
+ulong4 intel_sub_group_block_read_ul4( const __global ulong* p )
+ulong8 intel_sub_group_block_read_ul8( const __global ulong* p )
+ulong intel_sub_group_block_read_ul( image2d_t image, int2 byte_coord )
+ulong2 intel_sub_group_block_read_ul2( image2d_t image, int2 byte_coord )
+ulong4 intel_sub_group_block_read_ul4( image2d_t image, int2 byte_coord )
+ulong8 intel_sub_group_block_read_ul8( image2d_t image, int2 byte_coord )
+
+void intel_sub_group_block_write_ul( __global ulong* p, ulong data )
+void intel_sub_group_block_write_ul2( __global ulong* p, ulong2 data )
+void intel_sub_group_block_write_ul4( __global ulong* p, ulong4 data )
+void intel_sub_group_block_write_ul8( __global ulong* p, ulong8 data )
+void intel_sub_group_block_write_ul( image2d_t image, int2 byte_coord, ulong data )
+void intel_sub_group_block_write_ul2( image2d_t image, int2 byte_coord, ulong2 data )
+void intel_sub_group_block_write_ul4( image2d_t image, int2 byte_coord, ulong4 data )
+void intel_sub_group_block_write_ul8( image2d_t image, int2 byte_coord, ulong8 data )</code></pre>
+</div>
+</div>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">For naming consistency, also add suffixed aliases of the <code>uint</code> subgroup block read and write functions described in the <code>cl_intel_subgroups</code> extension: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="listingblock">
+<div class="content">
+<pre class="highlight"><code>uint intel_sub_group_block_read_ui( const __global uint* p )
+uint2 intel_sub_group_block_read_ui2( const __global uint* p )
+uint4 intel_sub_group_block_read_ui4( const __global uint* p )
+uint8 intel_sub_group_block_read_ui8( const __global uint* p )
+uint intel_sub_group_block_read_ui( image2d_t image, int2 byte_coord )
+uint2 intel_sub_group_block_read_ui2( image2d_t image, int2 byte_coord )
+uint4 intel_sub_group_block_read_ui4( image2d_t image, int2 byte_coord )
+uint8 intel_sub_group_block_read_ui8( image2d_t image, int2 byte_coord )
+
+void intel_sub_group_block_write_ui( __global uint* p, uint data )
+void intel_sub_group_block_write_ui2( __global uint* p, uint2 data )
+void intel_sub_group_block_write_ui4( __global uint* p, uint4 data )
+void intel_sub_group_block_write_ui8( __global uint* p, uint8 data )
+void intel_sub_group_block_write_ui( image2d_t image, int2 byte_coord, uint data )
+void intel_sub_group_block_write_ui2( image2d_t image, int2 byte_coord, uint2 data )
+void intel_sub_group_block_write_ui4( image2d_t image, int2 byte_coord, uint4 data )
+void intel_sub_group_block_write_ui8( image2d_t image, int2 byte_coord, uint8 data )</code></pre>
+</div>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_c_specification">Modifications to the OpenCL C Specification</h2>
+<div class="sectionbody">
+<div class="sect2">
+<h3 id="_modifications_to_section_6_13_x_sub_group_read_and_write_functions">Modifications to Section 6.13.X "Sub Group Read and Write Functions"</h3>
+<div class="paragraph">
+<p>This section was added by the <code>cl_intel_subgroups</code> extension.</p>
+</div>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add suffixed aliases of the previously un-suffixed 32-bit block read and write functions. There is no change to the description or behavior of these functions: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 55.5555%;">
+<col style="width: 44.4445%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top"><strong>Function</strong></th>
+<th class="tableblock halign-left valign-top"><strong>Description</strong></th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">uint intel_sub_group_block_read(
+ const __global uint* p )
+uint2 intel_sub_group_block_read2(
+ const __global uint* p )
+uint4 intel_sub_group_block_read4(
+ const __global uint* p )
+uint8 intel_sub_group_block_read8(
+ const __global uint* p )
+
+uint intel_sub_group_block_read_ui(
+ const __global uint* p )
+uint2 intel_sub_group_block_read_ui2(
+ const __global uint* p )
+uint4 intel_sub_group_block_read_ui4(
+ const __global uint* p )
+uint8 intel_sub_group_block_read_ui8(
+ const __global uint* p )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, or 8 uints of data for each work item in the subgroup from the specified pointer as a block operation…​</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">uint intel_sub_group_block_read(
+ image2d_t image,
+ int2 byte_coord )
+uint2 intel_sub_group_block_read2(
+ image2d_t image,
+ int2 byte_coord )
+uint4 intel_sub_group_block_read4(
+ image2d_t image,
+ int2 byte_coord )
+uint8 intel_sub_group_block_read8(
+ image2d_t image,
+ int2 byte_coord )
+
+uint intel_sub_group_block_read_ui(
+ image2d_t image,
+ int2 byte_coord )
+uint2 intel_sub_group_block_read_ui2(
+ image2d_t image,
+ int2 byte_coord )
+uint4 intel_sub_group_block_read_ui4(
+ image2d_t image,
+ int2 byte_coord )
+uint8 intel_sub_group_block_read_ui8(
+ image2d_t image,
+ int2 byte_coord )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, or 8 uints of data for each work item in the subgroup from the specified image at the specified coordinate as a block operation…​</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write(
+ __global uint* p, uint data )
+void intel_sub_group_block_write2(
+ __global uint* p, uint2 data )
+void intel_sub_group_block_write4(
+ __global uint* p, uint4 data )
+void intel_sub_group_block_write8(
+ __global uint* p, uint8 data )
+
+void intel_sub_group_block_write_ui(
+ __global uint* p, uint data )
+void intel_sub_group_block_write_ui2(
+ __global uint* p, uint2 data )
+void intel_sub_group_block_write_ui4(
+ __global uint* p, uint4 data )
+void intel_sub_group_block_write_ui8(
+ __global uint* p, uint8 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, or 8 uints of data for each work item in the subgroup to the specified pointer as a block operation…​</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write(
+ image2d_t image,
+ int2 byte_coord, uint data )
+void intel_sub_group_block_write2(
+ image2d_t image,
+ int2 byte_coord, uint2 data )
+void intel_sub_group_block_write4(
+ image2d_t image,
+ int2 byte_coord, uint4 data )
+void intel_sub_group_block_write8(
+ image2d_t image,
+ int2 byte_coord, uint8 data )
+
+void intel_sub_group_block_write_ui(
+ image2d_t image,
+ int2 byte_coord, uint data )
+void intel_sub_group_block_write_ui2(
+ image2d_t image,
+ int2 byte_coord, uint2 data )
+void intel_sub_group_block_write_ui4(
+ image2d_t image,
+ int2 byte_coord, uint4 data )
+void intel_sub_group_block_write_ui8(
+ image2d_t image,
+ int2 byte_coord, uint8 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, or 8 uints of data for each work item in the subgroup to the specified image at the specified coordinate as a block operation…​</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</dd>
+<dt class="hdlist1">Also, add <code>ulong</code> variants of the block read and write functions. In the descriptions of these functions, the "note below describing out-of-bounds behavior" is in the <code>cl_intel_subgroups</code> extension specification: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<table class="tableblock frame-all grid-all stretch">
+<colgroup>
+<col style="width: 55.5555%;">
+<col style="width: 44.4445%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top"><strong>Function</strong></th>
+<th class="tableblock halign-left valign-top"><strong>Description</strong></th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">ulong intel_sub_group_block_read_ul(
+ const __global ulong* p )
+ulong2 intel_sub_group_block_read_ul2(
+ const __global ulong* p )
+ulong4 intel_sub_group_block_read_ul4(
+ const __global ulong* p )
+ulong8 intel_sub_group_block_read_ul8(
+ const __global ulong* p )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, or 8 ulongs of data for each work item in the subgroup from the specified pointer as a block operation.
+The data is read strided, so the first value read is:</p>
+<p class="tableblock"><code>p[ sub_group_local_id ]</code></p>
+<p class="tableblock">and the second value read is:</p>
+<p class="tableblock"><code>p[ sub_group_local_id + max_sub_group_size ]</code></p>
+<p class="tableblock">etc.</p>
+<p class="tableblock">There is no defined out-of-range behavior for these functions.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">ulong intel_sub_group_block_read_ul(
+ image2d_t image,
+ int2 byte_coord )
+ulong2 intel_sub_group_block_read_ul2(
+ image2d_t image,
+ int2 byte_coord )
+ulong4 intel_sub_group_block_read_ul4(
+ image2d_t image,
+ int2 byte_coord )
+ulong8 intel_sub_group_block_read_ul8(
+ image2d_t image,
+ int2 byte_coord )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Reads 1, 2, 4, or 8 ulongs of data for each work item in the subgroup from the specified <em>image</em> at the specified coordinate as a block operation.
+Note that the coordinate is a byte coordinate, not an image element coordinate.
+Also note that the image data is read without format conversion, so each work item may read multiple image elements
+(for images with element size smaller than 64-bits).</p>
+<p class="tableblock">The data is read row-by-row, so the first value read is from the row specified in the y-component of the provided <em>byte_coord</em>, the second value is read from the y-component of the provided <em>byte_coord</em> plus one, etc.</p>
+<p class="tableblock">Please see the note below describing out-of-bounds behavior for these functions.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write_ul(
+ __global ulong* p, ulong data )
+void intel_sub_group_block_write_ul2(
+ __global ulong* p, ulong2 data )
+void intel_sub_group_block_write_ul4(
+ __global ulong* p, ulong4 data )
+void intel_sub_group_block_write_ul8(
+ __global ulong* p, ulong8 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, 8, or 16 ulongs of data for each work item in the subgroup to the specified pointer as a block operation.
+The data is written strided, so the first value is written to:</p>
+<p class="tableblock"><code>p[ sub_group_local_id ]</code></p>
+<p class="tableblock">and the second value is written to:</p>
+<p class="tableblock"><code>p[ sub_group_local_id + max_sub_group_size ]</code></p>
+<p class="tableblock">etc.</p>
+<p class="tableblock"><em>p</em> must be aligned to a 128-bit (16-byte) boundary.</p>
+<p class="tableblock">There is no defined out-of-range behavior for these functions.</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><div class="content"><div class="listingblock">
+<div class="content">
+<pre class="highlight"><code class="language-c" data-lang="c">void intel_sub_group_block_write_ul(
+ image2d_t image,
+ int2 byte_coord, ulong data )
+void intel_sub_group_block_write_ul2(
+ image2d_t image,
+ int2 byte_coord, ulong2 data )
+void intel_sub_group_block_write_ul4(
+ image2d_t image,
+ int2 byte_coord, ulong4 data )
+void intel_sub_group_block_write_ul8(
+ image2d_t image,
+ int2 byte_coord, ulong8 data )</code></pre>
+</div>
+</div></div></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Writes 1, 2, 4, or 8 ulongs of data for each work item in the subgroup to the specified <em>image</em> at the specified coordinate as a block operation.
+Note that the coordinate is a byte coordinate, not an image element coordinate.
+Unlike the image block read function, which may read from any arbitrary byte offset, the x-component of the byte coordinate for the image block write functions must be a multiple of four;
+in other words, the write must begin at 32-bit boundary.
+There is no restriction on the y-component of the coordinate.
+Also, note that the image <em>data</em> is written without format conversion, so each work item may write multiple image elements (for images with element size smaller than 64-bits).</p>
+<p class="tableblock">The data is written row-by-row, so the first value written is from the row specified by the y-component of the provided <em>byte_coord</em>, the second value is written from the y-component of the provided <em>byte_coord</em> plus one, etc.</p>
+<p class="tableblock">Please see the note below describing out-of-bounds behavior for these functions.</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_modifications_to_the_opencl_spir_v_environment_specification">Modifications to the OpenCL SPIR-V Environment Specification</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The section numbers below refer to sections added by the <code>cl_intel_spirv_subgroups</code> extension.</p>
+</div>
+<div class="paragraph">
+<p>Note that the restrictions described in Section 7.1.X.3 - <em>Notes and Restrictions</em> in the <code>cl_intel_spirv_subgroups</code> extension are unchanged and continue to apply for this extension.</p>
+</div>
+<div class="sect2">
+<h3 id="_add_to_section_7_1_x_2_block_io_instructions">Add to Section 7.1.X.2 - Block IO Instructions</h3>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Add to the description of supported types in this section: </dt>
+<dd>
+<div class="openblock">
+<div class="content">
+<div class="paragraph">
+<p>Additionally, if the OpenCL environment supports the extension <code>cl_intel_subgroups_long</code>:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Scalars and <strong>OpTypeVectors</strong> with 2, 4, or 8 <em>Component Count</em> components of the following <em>Component Type</em> types:</p>
+<div class="ulist">
+<ul>
+<li>
+<p><strong>OpTypeInt</strong> with a <em>Width</em> of 64 bits and <em>Signedness</em> of 0 (equivalent to <code>long</code> and <code>ulong</code>)</p>
+</li>
+</ul>
+</div>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_issues">Issues</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_revision_history">Revision History</h2>
+<div class="sectionbody">
+<table class="tableblock frame-all grid-rows stretch">
+<colgroup>
+<col style="width: 4.7619%;">
+<col style="width: 14.2857%;">
+<col style="width: 14.2857%;">
+<col style="width: 66.6667%;">
+</colgroup>
+<thead>
+<tr>
+<th class="tableblock halign-left valign-top">Rev</th>
+<th class="tableblock halign-left valign-top">Date</th>
+<th class="tableblock halign-left valign-top">Author</th>
+<th class="tableblock halign-left valign-top">Changes</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock">1</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">2020-03-13</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">Ben Ashbaugh</p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><strong>First public revision.</strong></p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Version V2.2-11-93-g2eccabe<br>
+Last updated 2020-03-13 13:09:47 -0700
+</div>
+</div>
+
+<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.4/MathJax.js?config=TeX-MML-AM_HTMLorMML"></script>
+</body>
+</html>
\ No newline at end of file
diff --git a/extensions/registry.py b/extensions/registry.py
index 38fc9ac..8c9e077 100644
--- a/extensions/registry.py
+++ b/extensions/registry.py
@@ -206,6 +206,16 @@
'flags' : { 'public' },
'url' : 'extensions/intel/cl_intel_subgroups.html',
},
+ 'cl_intel_subgroups_char' : {
+ 'number' : 59,
+ 'flags' : { 'public' },
+ 'url' : 'extensions/intel/cl_intel_subgroups_char.html',
+ },
+ 'cl_intel_subgroups_long' : {
+ 'number' : 60,
+ 'flags' : { 'public' },
+ 'url' : 'extensions/intel/cl_intel_subgroups_long.html',
+ },
'cl_intel_subgroups_short' : {
'number' : 48,
'flags' : { 'public' },
