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<p class="MsoNormal"><span style="color:#1F497D">Hi Joe & Michael,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">In rev. 151382 you have changed the fptoui implementation of the x86 codegen for win32.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Before the change fptoui was lowered to
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">flds 16(%esp)<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:0in;text-indent:.5in;text-autospace:none">
<span style="font-size:9.5pt;font-family:Consolas"> fisttpll 8(%esp)<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in"><span style="font-size:9.5pt;font-family:Consolas">movl 8(%esp), %eax<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">After the change fptoui is lowered to
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas">flds 40(%esp)<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in;text-indent:.5in"><span style="font-size:9.5pt;font-family:Consolas">calll _ftol2<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Please note that the assumption that _ftol2 doesn’t modify ECX isn’t true on sandybridge platform.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Could you share with me the reasons behind this change? Did you get better performance after this change?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Asaf<o:p></o:p></span></p>
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