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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I changed it to clobbersAllYmmRegs() with opposite meaning.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><i><span style="color:teal">- Elena</span></i></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Quentin Colombet [mailto:qcolombet@apple.com]
<br>
<b>Sent:</b> Tuesday, February 12, 2013 21:35<br>
<b>To:</b> Demikhovsky, Elena<br>
<b>Cc:</b> Commit Messages and Patches for LLVM<br>
<b>Subject:</b> Re: Please review: Fixed a bug in X86 vzeroupper.<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Elena,<o:p></o:p></p>
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<p class="MsoNormal">The name of the preservesYmmRegs function is confusing because one (at least, I) would expect that it returns true if the operand preserves all Ymm Regs, which is not what the function is doing.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Could you come with a better name please?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black">-Quentin<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">On Feb 12, 2013, at 7:04 AM, "Demikhovsky, Elena" <<a href="mailto:elena.demikhovsky@intel.com">elena.demikhovsky@intel.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<p class="MsoNormal">Instruction vzeroupper should not be inserted before call that preserves YMM registers, since a caller uses preserved registers across the call.<br>
<br>
Thanks.<br>
<br>
- Elena<br>
<br>
<br>
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