Intel has published Core 2 Duo Optimization Reference Manual. I will check in this patch to update wwwdocs.
H.J. ---- 2006-11-10 H.J. Lu <[EMAIL PROTECTED]> * readings.html: Update Intel64 and IA32 SDM website. Index: readings.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/readings.html,v retrieving revision 1.160 diff -u -p -r1.160 readings.html --- readings.html 23 Oct 2006 16:17:21 -0000 1.160 +++ readings.html 10 Nov 2006 17:32:21 -0000 @@ -133,8 +133,8 @@ names. <li>i386 (i486, i586, i686, i786) <br />Manufacturer: Intel - <br /><a href="http://developer.intel.com/design/pentium4/manuals/index_new.htm"> - IA-32 Intel Architecture Software Developer's Manuals</a> + <br /><a href="http://developer.intel.com/products/processor/manuals/index.htm"> +Intel®64 and IA-32 Architectures Software Developer's Manuals</a> <br />Some information about optimizing for x86 processors, links to x86 manuals and documentation: