https://svn.boost.org/trac10/ticket/9232 <p> With integers of size N powm() will instantiate divide_unsigned_helper&lt;&gt; for N and N*2, since this is a very large function this leads to classical template bloat. Examining the codegen it appears that both instantiations are nearly identical save for immediate constants -&gt; this would suggest that you could refactor divide_unsigned_helper&lt;&gt; (and probably the rest of the library) so that it separates functionality that actually depends on template parameters from template-parameter independent code into separate functions (in this case divide_unsigned_helper would probably call a helper function that takes the size of the number as a runtime parameter). </p> <p> ps. even when different function template instantiations result in identical code there are _still_ lousy compilers&amp;linkers that will not merge them (Clang we are looking at you: <a class="ext-link" href="http://llvm.org/bugs/show_bug.cgi?id=11633"><span class="icon">​</span>http://llvm.org/bugs/show_bug.cgi?id=11633</a>)... </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/9232 Trac 1.4.3 John Maddock Sat, 12 Oct 2013 10:07:21 GMT