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<div class="moz-cite-prefix">On 08/15/2013 09:13 PM, Craig Topper
wrote:<br>
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cite="mid:CAF7ks-MZUb_eDkQY9VQtxHw007jXBZebLume6soFw-XSY91sTA@mail.gmail.com"
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<div dir="ltr">Are you looking for something other than calling
__builtin_clz from c++ or calling @llvm.ctlz.* instrinsic from
IR?
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That's good enough. Thanks.<br>
<br>
On Mips16 I don't have an instruction for that so I think I need to
ask that it be expanded,<br>
so I will try that tomorrow but I will need a small test case to put
it back.<br>
<br>
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cite="mid:CAF7ks-MZUb_eDkQY9VQtxHw007jXBZebLume6soFw-XSY91sTA@mail.gmail.com"
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<div>I don't think we have anything that will auto converting a
loop to ctlz or anything like that. We only seem to have a
detection for popcount loops.</div>
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<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Thu, Aug 15, 2013 at 9:01 PM, reed
kotler <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:rkotler@mips.com" target="_blank">rkotler@mips.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Does
anyone know some simple c/c++ code or .ll code which will
cause this ctlz pattern to be emitted?<br>
<br>
Tia.<br>
<br>
Reed<br>
<br>
<br>
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-- <br>
~Craig
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