[LLVMdev] [PATCH] Add simple cross-block DSE.

[Gianluca Guida]

Hello,

This patch implements cross-block dead store elimination for a simple
scenario -- which was somehow important in my case --, i.e. when a
store has only one memory dependence in a function.

This patch is a bit narrow-minded (e..g, only store instructions are
checked for memory dependencies), but I can always make it more
generic, if you give me pointers *and* my code is correct.

Cheers,
Gianluca

-- 
It was a type of people I did not know, I found them very strange and
they did not inspire confidence at all. Later I learned that I had been
introduced to electronic engineers.
                                                  E. W. Dijkstra
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