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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-12283] Use gcc atomic builtins if available on IA-32 and x86_64</title>
                <link>https://jira.mongodb.org/browse/SERVER-12283</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Follow-on to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12064&quot; title=&quot;AtomicIntrinsics is not portable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12064&quot;&gt;&lt;del&gt;SERVER-12064&lt;/del&gt;&lt;/a&gt;. Robie Basak of Canonical submitted a pull request to improve our portability, particularly on ARM.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/pull/582&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/pull/582&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;We merged two of his three commits for 2.5.5. The third changes the codepath on IA-32 and x86_64 to use GCC atomic builtins if available rather than the inline assembler of &lt;tt&gt;mongo/platform/atomic_intrinsics_gcc_intel.h&lt;/tt&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="105012">SERVER-12283</key>
            <summary>Use gcc atomic builtins if available on IA-32 and x86_64</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="benety.goh@mongodb.com">Benety Goh</assignee>
                                    <reporter username="matt.kangas">Matt Kangas</reporter>
                        <labels>
                            <label>community-team</label>
                    </labels>
                <created>Tue, 7 Jan 2014 20:18:39 +0000</created>
                <updated>Mon, 11 Jul 2016 17:19:23 +0000</updated>
                            <resolved>Fri, 9 May 2014 19:43:36 +0000</resolved>
                                                    <fixVersion>2.7.1</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="578609" author="xgen-internal-githook" created="Fri, 9 May 2014 19:42:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;name&apos;: u&apos;Robie Basak&apos;, u&apos;email&apos;: u&apos;robie.basak@canonical.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12064&quot; title=&quot;AtomicIntrinsics is not portable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12064&quot;&gt;&lt;del&gt;SERVER-12064&lt;/del&gt;&lt;/a&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-12283&quot; title=&quot;Use gcc atomic builtins if available on IA-32 and x86_64&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-12283&quot;&gt;&lt;del&gt;SERVER-12283&lt;/del&gt;&lt;/a&gt; Use gcc atomic builtins if available&lt;/p&gt;

&lt;p&gt;Switch to using gcc atomic builtins for atomic operations if using a new&lt;br/&gt;
enough gcc and clang and support is available. Otherwise, fall back to&lt;br/&gt;
the old behaviour of existing non-portable inline assembly to continue&lt;br/&gt;
to support builds on older versions of gcc.&lt;/p&gt;

&lt;p&gt;Signed-off-by: Benety Goh &amp;lt;benety@mongodb.com&amp;gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/19cceceb780ab13104d5a4e44c373472ac5f430d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/19cceceb780ab13104d5a4e44c373472ac5f430d&lt;/a&gt;&lt;/p&gt;</comment>
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