[LLVMdev] conditionally reduced intrinsics

[Brian R. Gaeke]

> Ok, I am developing an intrinsic instruction and I have the codegen
> working (and tested).  However, some of the more complex cases of the
> intrinsic are reducable to LLVM + simpler cases of the intrinsic.  How
> would I go about conditionally reducing the intrinsic?  I could deal
> with the issue in the codegen, but that gets ugly quickly.
> 
> Andrew

I suppose you could do an LLVM->LLVM lowering pass which reduces the
complex cases to the simple cases. This would then allow you to use
the redundancy-elimination passes like LICM to clean up the resulting
code.

-Brian

-- 
gaeke at uiuc.edu