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<body class='hmmessage'><div dir='ltr'><div>Thanks, David. <span style="font-size: 12pt;">The build type is Debug. Today I tried removing the debug info (-g), the size of the executable could be cut 90%, to around 100MB, which looks not bad. Do you know whether there is a way to separate debug info file from the executable file on Linux? </span><span style="font-size: 12pt;">Mainly our code is already there, refactoring might require big effort.. Also, does clang support -fno-implicit-templates? if yes, maybe we could use it to eliminate duplicate template instances to control the final size. </span></div><div><br><div><hr id="stopSpelling">Date: Wed, 23 Sep 2015 16:59:04 -0700<br>Subject: Re: [cfe-users] optimize template-heavy project with duplicate code removal<br>From: dblaikie@gmail.com<br>To: chenxuz@outlook.com<br>CC: cfe-users@lists.llvm.org<br><br><div dir="ltr">debug or non-debug build?<div><br></div><div>& no, for a full release build, measuring the final executable size, there's not much you can do with the compiler.<br><br>you can try to factor common portions out of your templates (eg: remove template parameters where possible - if, for example, a member function of a class template doesn't need all the template parameters - pull it out into a standalone function template that takes fewer template parameters, and call it from the member one)</div></div><div class="ecxgmail_extra"><br><div class="ecxgmail_quote">On Wed, Sep 23, 2015 at 4:43 PM, chen xu via cfe-users <span dir="ltr"><<a href="mailto:cfe-users@lists.llvm.org" target="_blank">cfe-users@lists.llvm.org</a>></span> wrote:<br><blockquote class="ecxgmail_quote" style="border-left:1px #ccc solid;padding-left:1ex;">
<div><div dir="ltr">Hi, our project heavily uses c++ template, and the resulting executable is almost 1.5G Bytes, which is too big to be acceptable. Adding -O2 or -Os does not seem helping. Is there any way (like link option, etc) to reduce the size? </div></div>
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