[LLVMdev] Writing a dataflow analysis

[Silken Tiger]

Hi

I have just taken a look at the LLVM-compiler and i am trying to write a pass 
which analyses the dataflow and sideeffects.

So far i have written my own pass which works and i can traverse the blocks, 
functions and instructions. Currently i am using the "runOnFunction" function 
and iterate over the functions and blocks. But this seems to be not optimal 
since the instructions itself seem to be organized as a tree...

I suspect there is a more sensible way to get the dataflow start and endpoints 
out of the structure? 

Thanks for any directions or hints
ST