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...registers being typed with EVTs instead of register classes and the greater flexibility in what is a "legal" type, the ABI lowering should become significantly easier for weird targets. Will LowerFormalArguments and friends still only see legal types, or will they see the raw LLVM IR or unlegalized EVT types? [snip] Legalization > > SelectionDAG's concept of legal types isn't clearly defined. It seems to > be a bit random which operations must be supported before a type can be > considered legal. We'll define legal types precisely: > > A type is considere...

Chris Lattner wrote: > On Fri, 11 Mar 2005, Morten Ofstad wrote: >> 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