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9d91f9059d
VSX has instructions lxsiwax/lxsdx that can load 32/64 bit value into VSX register cheaply. That patch makes it known to memory cost model, so the vectorization of the test case in pr30990 is beneficial. Differential Revision: https://reviews.llvm.org/D26713 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288560 91177308-0d34-0410-b5e6-96231b3b80d8