Thanks, David. 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? 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.
Date: Wed, 23 Sep 2015 16:59:04 -0700
Subject: Re: [cfe-users] optimize template-heavy project with duplicate code
removal
From: dblai...@gmail.com
To: chen...@outlook.com
CC: cfe-users@lists.llvm.org
debug or non-debug build?
& no, for a full release build, measuring the final executable size, there's
not much you can do with the compiler.
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)
On Wed, Sep 23, 2015 at 4:43 PM, chen xu via cfe-users
<cfe-users@lists.llvm.org> wrote:
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?
_______________________________________________
cfe-users mailing list
cfe-users@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
_______________________________________________
cfe-users mailing list
cfe-users@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
