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...ectionDAG isels, and > lib/CodeGen/IntrinsicLowering.cpp for other isels. Why not do it in SelectionDAGLowering::visitCall? The way I have implemented it now, this calls TLI.hasNativeSupportForOperation to see if it (for example FP_SQRT) is a legal operation on the target, and if not it sets RenameFn to "sin" and simply goes ahead with generating the call. This is a lot less code than doing it in LegalizeDAG, and also more efficient since it's not first lowered to an instruction and then expanded to a call. m.

On Fri, 11 Mar 2005, Morten Ofstad wrote: > Hello, > > I am trying to make the FP intrinsics (abs, sin, cos, sqrt) I've added work > with the X86ISelPattern, but I'm having some difficulties understanding what > needs to be done. Cool. Here are a couple of requests: 1. I don't think we need an "llvm.abs" intrinsic at the llvm level. This can be

Hello, I am trying to make the FP intrinsics (abs, sin, cos, sqrt) I've added work with the X86ISelPattern, but I'm having some difficulties understanding what needs to be done. I assume I have to add new nodetypes for the FP instructions to SelectionDAGNodes.h, and make nodes for these in SelectionDAGLowering::visitCall when I find the intrinsic... The part I don't quite