On Mon, 28 Mar 2005, Wei Qin wrote: > Hello GCC developers, > > I am avid user of gcc and have 5 cross-gcc's installed on my machine. > Thanks for your great work. Recently I want to do some compiler work > that involves analyzing low level intermediate representation. I > thought about using research compilers such as SUIF or SUIF II but > those lack maintenance and cannot even be built without much hacking. > So I am now considering using gcc. But since I am not familiar with > its source code structure, I am not comfortable to work directly on > it. Instead, I am thinking of dumping the MIPS RTL prior to the first > scheduling pass and then use an RTL parser to read it into another > compiler such as mach-SUIF. But the document says that RTL does not > contain all information of a source program, e.g. global variables. So > I wonder if there is a way for me to get complete low level MIPS IR > that is largely optimized but not register allocated. Or should I give > up this thought? Expert please advise. > > Thanks in advance, > > Wei
This topic arises every so often, and should become part of a FAQ somewhere. The reading/writing of RTL is deliberately not supported so GCC cannot be used as the front-end or back-end of a non-free compiler, as I recall. Toshi
