search for: x86vectortargettransforminfo

I know, I said a bad word -- analysis group. But it works pretty much the way I think we want here. We *always* want a TargetTransformInfo, and we have reasonable (conservative) stubs in place. We would just like the option of providing one from the target that has very clever implementations. I would propose that we make TargetTransformInfo be an analysis group, and provide