[LLVMdev] Sparc back end problem

[Timothy M Jones]

Hi everyone,

I'm trying to make a cross-compiler based on llvm to target sparc  
(solaris) from x86_64 (linux).  I couldn't compile llvm-gcc on my system  
so have to use the precompiled binaries from the website, but already have  
a gcc cross-compiler so can use this.  So far, my compilation steps are  
these:

1) Preprocess the (C) sources using gcc cross-compiler
2) Use llvm-gcc to transform to llvm IR
3) Run llc to emit sparc assembly
4) Assemble and link using gcc cross-compiler

This works for a simple 'Hello World' program, but I'm getting problems  
when trying more complicated things.  One thing in particular is with a  
simple printf that I want to write that prints out the size of an  
integer.  I've attached an example program source, preprocessed source,  
llvm code and assembly.  Instead of printing 'Value is 4' I get 'Value is  
0'!  I don't know sparc assembly at all, but a quick scan over the code  
shows that the value '4' is definitely used in an instruction near the  
printf call.  Anyone know why this isn't working or point out where I'm  
going wrong?  I'm using llvm 2.8.

Cheers
Tim


-- 
Timothy M. Jones
http://homepages.inf.ed.ac.uk/tjones1
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

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