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<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">Dear Community,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">I need a help/advice how to go with the following problem.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">There are two independently created patches
<a href="https://reviews.llvm.org/D111114">https://reviews.llvm.org/D111114</a> and
<a href="https://reviews.llvm.org/D107301">https://reviews.llvm.org/D107301</a> which actually handle the same problem.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">There is pseudo instruction STATEPOINT and it is platform-independent.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">However the list of implicit-defs is different on different platforms. Specifically on aarch64 it has implicit def of link register.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">I failed to find a way how to override the list of implicit defs of pseudo instruction for some specific platform.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">So I wonder
<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">whether it is possible?<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">How and how difficult will be to extend td files support to allow this overriding if it is not possible?<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">Does it make sense to extend the support complicating things or it is better to go with workaround implemented
in patches above?<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">Thanks in advance,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Avenir Next LT Pro",sans-serif">Serguei.<br>
<br>
<o:p></o:p></span></p>
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