[LLVMdev] loop fusion in LLVM

[Krzysztof Parzyszek]

On 11/12/2013 8:08 PM, Qi Liao wrote:
> Thanks a lot for your input. We will look more into the legality and
> profitability checks you've mentioned.

Identify some motivating cases where the performance benefits will be 
fairly obvious, and restrict the fusion to handle these.  This will save 
you some work for the project and you can still extend it later.  I'm 
thinking about cases like array contraction, or situations where one 
loop initializes some array, and then the next loop updates some of the 
elements again (overwriting previous values).

-Krzysztof

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