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<p class="MsoNormal"><span style="color:#1F497D">Hi,<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">| </span>The question is:<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">|</span> * is this a problem with the test, that shouldn't be expecting values below FLT_MIN, or<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">|</span> * is it a bug in the lowering, that should only be lowering to NEON's VMUL when unsafe-math is on, or<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">|</span> * neither, and people should disable that when they want correctness?<span style="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"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Note that if you go for the second option, IMO unsafe-math is _far_ too "aggressive" an option to control this whether multiplies should be allowed produce
denormals. I can imagine plenty of cases where I wouldn't care about denormals, but wouldn't want some of the other fast-math semantics applied. Does llvm/clang have any option like strict-iee754 that users can toggle to control things like this?<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"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dave<o:p></o:p></span></p>
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