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<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Sep 1, 2011, at 5:23 AM, Cesare Di Mauro wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: 'Bitstream Vera Sans Mono'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div>A simple solution: when tracing is enabled, the new instruction format will never be executed (and information tracking disabled as well).</div></span></blockquote><br></div><div>Correct me if I'm wrong: doesn't this mean that no profiler will accurately be able to measure the performance impact of the new instruction format, and therefore one may get incorrect data when on is trying to make a CPU optimization for real-world performance?</div><div><br></div><div><br></div></body></html>
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