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<p class="MsoNormal"><span style="font-size:12.0pt">Hi Vicente,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Yes, you are right.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Thanks a lot for noticing the incorrect address.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Sorry for the issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">-Evgeny<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Vicente Romero <vicente.romero@oracle.com><br>
<b>Date: </b>Wednesday, 22 May 2024 at 22:07<br>
<b>To: </b>"Astigeevich, Evgeny" <eastig@amazon.co.uk>, "compiler-dev@openjdk.org" <compiler-dev@openjdk.org><br>
<b>Subject: </b>RE: [EXTERNAL] Preventing bugs with register usage and ABI compliance in hand-written assembly</span><span style="font-size:12.0pt;color:black;mso-ligatures:none;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt">
Hi Evgeny,<br>
<br>
I think you intended to post to: <a href="mailto:hotspot-compiler-dev@openjdk.org">
hotspot-compiler-dev@openjdk.org</a><br>
<br>
Thanks,<br>
Vicente<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">On 5/22/24 16:59, Astigeevich, Evgeny wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">Hello,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">I’d like to discuss what options we have to prevent bugs like <a href="https://bugs.openjdk.org/browse/JDK-8324874">https://bugs.openjdk.org/browse/JDK-8324874</a>
“AArch64: crypto pmull based CRC32/CRC32C intrinsics clobber V8-V15 registers”.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">I am thinking about something like:</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">“</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">{
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> ABIVerifier abi_verifier(masm);</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> …</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> Some assembly code</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">} // When we leave the block abi_verifier will check ABI compliance
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">“</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">An alternative way might to enable ABI verification via StubCodeMark.</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">Kind regrads,</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:12.0pt">Evgeny Astigeevich</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:12.0pt;margin-left:36.0pt">
<span style="mso-ligatures:none;mso-fareast-language:EN-GB"><br>
<br>
<br>
Amazon Development Centre (London) Ltd.Registered in England and Wales with registration number 04543232 with its registered office at 1 Principal Place, Worship Street, London EC2A 2FA, United Kingdom.<br>
<br>
<o:p></o:p></span></p>
</blockquote>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-ligatures:none;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
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<br><br><br>Amazon Development Centre (London) Ltd.Registered in England and Wales with registration number 04543232 with its registered office at 1 Principal Place, Worship Street, London EC2A 2FA, United Kingdom.<br><br><br>
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