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7f583a4201
terribly complex partial blend logic. This code path was one of the more complex and bug prone when it first went in and it hasn't faired much better. Ultimately, with the simpler basis for unpack lowering and support bit-math blending, this is completely obsolete. In the worst case without this we generate different but equivalent instructions. However, in many cases we generate much better code. This is especially true when blends or pshufb is available. This does expose one (minor) weakness of the unpack lowering that I'll try to address. In case you were wondering, this is actually a big part of what I've been trying to pull off in the recent string of commits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229853 91177308-0d34-0410-b5e6-96231b3b80d8