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<a href="https://gitlab.rtems.org/sebhub">Sebastian Huber</a> created a merge request: <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/106">!106</a>
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Project:Branches: sebhub/rtems:fix-dhrystone-build to rtems/rtos/rtems:main
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Author: Sebastian Huber
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Assignee: Sebastian Huber
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Reviewers:
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<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #333238; margin: 0 0 16px;" align="initial">
<a href="#summary" aria-hidden="true" class="anchor" id="user-content-summary" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Summary</h2>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">dhrystone: Prevent procedure merging</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">From the Dhrystone RATIONALE:</p>
<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">o No procedure merging</p>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style='display: block; font-size: 14px; color: #333238; line-height: 1.6em; overflow-x: auto; border-radius: 4px; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 16px; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: 4px; white-space: pre; margin-top: 0; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; vertical-align: bottom; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">Although Dhrystone contains some very short procedures where execution would</span>
<span id="LC2" class="line" lang="plaintext">benefit from procedure merging (inlining, macro expansion of procedures),</span>
<span id="LC3" class="line" lang="plaintext">procedure merging is not to be used. The reason is that the percentage of</span>
<span id="LC4" class="line" lang="plaintext">procedure and function calls is part of the "Dhrystone distribution" of</span>
<span id="LC5" class="line" lang="plaintext">statements contained in [1]. This restriction does not hold for the string</span>
<span id="LC6" class="line" lang="plaintext">functions of the C version since ANSI C allows an implementation to use</span>
<span id="LC7" class="line" lang="plaintext">inline code for these functions.</span></code></pre>
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<p dir="auto" style="color: #333238; margin: 0;" align="initial">Close <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5058" data-reference-type="issue" data-original="#5058" data-link="false" data-link-reference="false" data-project="26" data-issue="28451" data-project-path="rtems/rtos/rtems" data-iid="5058" data-issue-type="issue" data-container="body" data-placement="top" title="dhrystone: Prevent procedure merging" class="gfm gfm-issue" style="margin-top: 0;">#5058</a>.</p>
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