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Regards,
Lai Jian-Xin

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Content-Transfer-Encoding: quoted-printable <div dir="ltr">Using option &quot;-WOPT:icopy=off:copy=off&quot; to disable all copy-propagation?<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/6/28 Yiran Wang <span dir="ltr">&lt;<a href="mailto:***@gmail.com" target="_blank">***@gmail.com</a>&gt;</span><br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thanks for your comments.<div><br></div><div>No, the assembly looks the same.<div><br></div><div>Good or bad, the compiler is able to clean up the temporary completely, say, copy propagation and DSE.</div> <div> <br></div><div>Regards,</div><div>Yiran<br><div><br></div></div></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Jun 27, 2013 at 12:26 AM, Jian-Xin Lai <span dir="ltr">&lt;<a href="mailto:***@gmail.com" target="_blank">***@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>