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[Bug lto/54231] LTO generates code for the wrong CPU if different options used
- From: "thiago at kde dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 13 Aug 2012 09:44:51 +0000
- Subject: [Bug lto/54231] LTO generates code for the wrong CPU if different options used
- Auto-submitted: auto-generated
- References: <bug-54231-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54231
--- Comment #9 from Thiago Macieira <thiago at kde dot org> 2012-08-13 09:44:51 UTC ---
(In reply to comment #8)
> If you do something like
>
> gcc -c t1.c -mavx -flto
> gcc -c t2.c -msse2 -flto
> gcc t1.o t2.o -flto
>
> then the link step will use -mavx -msse2, that is, target options are
> concatenated.
Indeed.
What I'm asking for is that each source file be compiled with its own target
options. I realise this is a request for enhancement, though.