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<div class="moz-cite-prefix">On 4/3/2018 9:25 AM, Kevin Neal via
llvm-dev wrote:<br>
</div>
<blockquote type="cite"
cite="mid:ddee3953eeac4e15acd3e4955d8dc9da@MERCMBX46D.na.SAS.com">
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<div>I'm working on the #pragma STDC FENV_ACCESS ON support,
specifically</div>
<div>the support for a strict version of the FP to unsigned
int conversion.</div>
<div><font face="Calibri"> </font></div>
<div>I've got a pass that runs and converts a new intrinsic
into code that </div>
<div>uses the FP to signed int conversion code similar to how
SelectionDAG</div>
<div>handles this now. Except that SelectionDAG will let the
target handle</div>
<div>it if the target says it will.</div>
<div> </div>
<div>How do I, from an "optimization" pass, query the target
to see if it</div>
<div>already has a better way of handling exactly this case? I
grepped around</div>
<div>and I didn't see anything in a pass that looked like what
I need.</div>
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<br>
TargetTransformInfo is probably what you're looking for.<br>
<br>
-Eli<br>
<pre class="moz-signature" cols="72">--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project</pre>
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