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<div style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif">Hi,<br>
<br>
Fully in agreement, but you can't put metadata on function declarations :)<br>
<br>
Sent from my Windows Phone</div>
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<span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif; FONT-WEIGHT: bold">From:
</span><span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif"><a href="mailto:listmail@philipreames.com">Philip Reames</a></span><br>
<span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif; FONT-WEIGHT: bold">Sent:
</span><span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif">ý17/ý12/ý2013 19:15</span><br>
<span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif; FONT-WEIGHT: bold">To:
</span><span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif"><a href="mailto:James.Molloy@arm.com">James Molloy</a>;
<a href="mailto:llvm-commits@cs.uiuc.edu">llvm-commits@cs.uiuc.edu</a></span><br>
<span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif; FONT-WEIGHT: bold">Subject:
</span><span style="FONT-SIZE: 11pt; FONT-FAMILY: Calibri,sans-serif">Re: RFC: Enable vectorization of call instructions in the loop vectorizer</span><br>
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<div class="moz-cite-prefix">On 12/16/13 9:08 AM, James Molloy wrote:<br>
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<p class="MsoNormal">So the version attached reads metadata attached to CallInsts. The schema for the metadata is detailed in the proposed LangRef addition, but basically it describes a list of potential vectorization candidates. Each candidate has a vector
width, a llvm::Function* (or MDString) giving the target function and a string describing how the function arguments need to be handled.</p>
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Specifically with regards to metadata, why is the metadata on the call site not the function declaration? I would expect that a call to "cos" would always vectorize to the same "cos4". Is supporting different vectorizations at different points of the program
a key goal?<br>
<br>
Ignoring most of the discussion since it seems like a good conclusion has been reached.<br>
<br>
Yours,<br>
Philip Reames<br>
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