[LLVMdev] Dynamic Optimization Infrastructure
evan.cheng at apple.com
Fri Oct 3 15:21:12 PDT 2008
On Oct 3, 2008, at 3:14 PM, Yale Zhang wrote:
> Does anyone know if LLVM will soon have a dynamic optimization
> infrastructure, namely support to generate trampolines back to the
> JIT/execution manager that get run when a piece of code's frequency
> exceeds a threshold? I see that there already is a
> relinkAndRecompileFunction in the JIT, which will be useful. Rather
> than roll my own mechanisms and have to worry about jumping back to
> code that gets replaced, are there already works in progress?
Not that I am aware of. Although there appears to be considerable
interests in this. Patches welcome.
> Also, is there a way to generate platform independent trampolines
> (e.g. generate IR that calls a function pointer to the execution
> engine I want to go to). LLVM seems to be pretty strict about type
> casts, so I was afraid I wouldn't be able to generate a function
> pointer initialized to arbitrary data.
Not sure if this is what you are looking for:
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> LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu
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