[LLVMdev] datalayout optimization question

[Sebastien DELDON-GNB]

Hi all,

We are developing our own compiler front-end and use LLVM as back-end. We generate .ll files and use opt/llc to generate target specific code. When I generate datalayout information in my .ll file it seems that it enables more optimization from LLVM opt. How can I determine which optimization are driven by datalayout information generation ?
In other words, when I don't generate target specific datalayout information, what are the optimizations that are turned off ?

Thanks for answers
Best Regards
Seb
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