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da681cc578
This is the simplest form of bit-math based blending which only fires when we are blending with zero and is relatively profitable. I've only enabled this path on very specific lowering strategies. I'm planning to widen its applicability in subsequent patches, but so far you'll notice that even though we get fewer shufps instructions, we *still* do the bit math in the FP execution port. I'm looking into why this is still happening. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228124 91177308-0d34-0410-b5e6-96231b3b80d8
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