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91ea3e41ae
perform a load to use blendps rather than movss when it is available. For non-loads, blendps is *much* faster. It can execute on two ports in Sandy Bridge and Ivy Bridge, and *three* ports on Haswell. This fixes one of the "regressions" from aggressively taking the "insertion" path in the new vector shuffle lowering. This does highlight one problem with blendps -- it isn't commuted as heavily as it should be. That's future work though. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219022 91177308-0d34-0410-b5e6-96231b3b80d8