Re: Compiler Design + feedback

Pertti Kellomaki <pertti.kellomaki@tut.fi>
Fri, 24 Apr 2009 15:44:16 +0300

          From comp.compilers

Related articles
Compiler Design + feedback herron.philip@googlemail.com (Philip Herron) (2009-04-21)
Re: Compiler Design + feedback cfc@shell01.TheWorld.com (Chris F Clark) (2009-04-21)
Re: Compiler Design + feedback herron.philip@googlemail.com (Philip Herron) (2009-04-22)
Re: Compiler Design + feedback kym@svalbard.freeshell.org (russell kym horsell) (2009-04-23)
Re: Compiler Design + feedback pertti.kellomaki@tut.fi (Pertti Kellomaki) (2009-04-24)
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From: Pertti Kellomaki <pertti.kellomaki@tut.fi>
Newsgroups: comp.compilers
Date: Fri, 24 Apr 2009 15:44:16 +0300
Organization: Compilers Central
References: 09-04-044 09-04-046 09-04-048
Keywords: GCC
Posted-Date: 24 Apr 2009 08:52:17 EDT

Philip Herron wrote:
> I read that gcc's intermediate language is gimple and this is how llvm
> plugs into gcc. Is this the main approach onto plugging in custom
> front ends into gcc's back-end or have a read it wrong?


You probably have it the wrong way around. The way gcc and LLVM interact
is that llvm-gcc produces files that contain LLVM bitcode (the LLVM IR).
LLVM then reads the bitcode files and does optimization and code
generation. In other words, neither LLVM or gcc plugs into each other.
--
Petrti



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