<div dir="auto"><div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">J. Gareth Moreton <<a href="mailto:gareth@moreton-family.com">gareth@moreton-family.com</a>> schrieb am Mi., 27. Nov. 2019, 18:08:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi everyone,<br>
<br>
Specifically to Florian, Jonas and Pierre, I would like to remove the <br>
"movz-> and" family of optimisations from the x86 peephole optimiser <br>
because the zero-extension commands no longer have the performance <br>
penalty that they had back in the 90s. Both instructions have a <br>
read/write dependency, but movzx uses fewer bytes.<br></blockquote></div></div><div dir="auto"><br></div><div dir="auto">In my opinion that should depend on the selected optimization processor (-OpX) as one might still want generate code for older processors. </div><div dir="auto"><br></div><div dir="auto">Regards, </div><div dir="auto">Sven </div><div dir="auto"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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