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Hi Pogo & James, Pogo, that is exactly the kind of answer I was expecting. Thanks for the time you spend on this problem. I myself did also some experimenst and found way to get what I'm expecting but I think that at least for x86 or any parameter passed on the stack for a different architecture the way LLVM handle debug information might be a problem. So here was the situation: My front-end at -O0 generates direct access to parameters and I used l...

Hi James, I fully agree with you and understand your statement about -O2. Now some questions for you: Did you try to reproduce experiments described in my previous e-mail ? Did you look at debug informations generated for 'n' parameter on x86 32-bit & x86 64-bit ? I'm working on my own front-end for LLVM and I had difficulties with debug information when they are related to x86