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69d2b2aa5a
Sequences of insertelement/extractelements are sometimes used to build vectorsr; this code tries to put them back together into shuffles, but could only produce a completely uniform shuffle types (<N x T> from two <N x T> sources). This should allow shuffles with different numbers of elements on the input and output sides as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203229 91177308-0d34-0410-b5e6-96231b3b80d8
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