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<p class="MsoNormal">This won’t happen with volatile load/store<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-Matt <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">llvm-dev <llvm-dev-bounces@lists.llvm.org> on behalf of llvm-dev <llvm-dev@lists.llvm.org><br>
<b>Reply-To: </b>Neil Ryan <neilryan@cs.washington.edu><br>
<b>Date: </b>Tuesday, April 16, 2019 at 9:01 PM<br>
<b>To: </b>llvm-dev <llvm-dev@lists.llvm.org><br>
<b>Subject: </b>[llvm-dev] Disable combining of loads and stores in instcombine<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> LLVM's optimizer combines stores to consecutive characters into a write of a single word. For instance, if I have char A[4] and I write some static value to each element, these
writes would be combined into a single 32-bit word write. I found <a href="http://llvm.1065342.n5.nabble.com/disabling-combining-load-stores-in-optimizer-td37560.html" target="_top">
this thread</a> from 2009 -- it seems like it wasn't possible then. Has anything changed since? <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><br>
Neil<o:p></o:p></span></p>
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