[LLVMdev] loop fusion

[Devang Patel]

Andrew,

There is not any transformation in LLVM that does loop fusion. I do not of anyone who is working on this. If you're interested to work on it then it'd be great!
-
Devang
On Sep 8, 2010, at 9:34 AM, Andrew Clinton wrote:

> I did find this note from 2004 that references a LoopFusion pass, but I 
> can't find it in the source code:
> http://nondot.org/sabre/LLVMNotes/LoopOptimizerNotes.txt
> 
> A little background - I'm working on a SIMD runtime, where I have a 
> scalar program but need to execute it on multiple independent data 
> elements.  One approach is to generate a loop for each operation, then 
> rely on the optimizer to merge the loops so that I get good locality.  
> Does this sound like a reasonable approach in LLVM?  If you're familiar 
> with CUDA, I'm after something quite similar where the program is scalar 
> but the runtime is vectorized.  Any pointers in the right direction 
> would be appreciated!
> 
> Andrew
>