<div dir="ltr"><div>Thanks for getting back to me.</div><div><br></div><div>So those nodes record if the type has already been expanded from a narrower type. Can you elaborate how I could use these to help? Again, I'm pretty unfamiliar with the SDNodes.</div><div><br></div><div>Thanks.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 27, 2015 at 3:22 PM, Matt Arsenault <span dir="ltr"><<a href="mailto:Matthew.Arsenault@amd.com" target="_blank">Matthew.Arsenault@amd.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>On 01/27/2015 12:16 PM, Ryan Taylor
wrote:<br>
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<blockquote type="cite">
<div dir="ltr">
<div>I have a CopyToReg that is copying from different size
types, what's the best way to change that to a zext or sext
node based on signed or unsigned? </div>
<div><br>
</div>
<div>I'm fairly unfamiliar with SelectionDAG process (outside of
the docs on llvm website).</div>
<div><br>
</div>
<div>It seems like I should be able to insert a custom hook
using the register class to identify the type, potentially in
ISelDAGToDag.cpp or is there a better place for this to be
done?</div>
<div><br>
</div>
<div>Thanks.</div>
</div>
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</blockquote>
<br></div></div>
It sounds to me like you are looking for the AssertSext / AssertZext
nodes<span class="HOEnZb"><font color="#888888"><br>
<br>
-Matt<br>
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