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<p class="MsoNormal"><a name="_MailEndCompose">> Even then, I'd personally want to see further evidence of why the correct solution is to model the floating point IV in SCEV rather than find a more powerful way of converting the IV to an integer that models
> the non-integer values taken on by the IV. As an example, if the use case is the following code with appropriate flags to relax IEEE semantics so this looks like normal algabra etc:<o:p></o:p></a></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">> for (float f = 0.01f; f < 1.0f; f += 0.01f) <span style="font-family:Wingdings">
ç</span> *<b>A</b>*<o:p></o:p></p>
<p class="MsoNormal"> ...<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">> I'd rather see us cleverly turn it into:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">> float f = 0.01f;<o:p></o:p></p>
<p class="MsoNormal">> for (int i = 1; i < 100; i += 1, f += 0.01f) <span style="font-family:Wingdings">
ç</span> *<b>B</b>*<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I can later try to enhance <span style="font-size:11.0pt;font-family:Consolas;color:#2B91AF;background:white;mso-highlight:white">
IndVarSimplify</span><span style="font-size:11.0pt;font-family:Consolas;color:black;background:white;mso-highlight:white">::handleFloatingPointIV</span><span style="font-size:11.0pt;font-family:Consolas;color:black">()
</span><span style="color:black">in order to convert</span><span style="font-size:11.0pt;font-family:Consolas;color:black"> *<b>A</b>* to *<b>B</b>*.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Consolas;color:black">But *<b>B</b>*
</span>is exactly the case I’m starting from. The main IV “i” is integer. The variable “f” is also considered as IV in this loop.
<o:p></o:p></p>
<p class="MsoNormal">And this loop is not vectorized because “f” is floating point.<o:p></o:p></p>
<p class="MsoNormal">I don’t think that the case *<b>B</b>* is uncommon.<o:p></o:p></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"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style="font-family:"Calibri",sans-serif;color:#2F5496"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span dir="LTR"></span><b><i><span style="color:#2F5496"> Elena<o:p></o:p></span></i></b></p>
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