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ca77e58993
vector to a zero vector for the v2 cases and fix the v4 integer cases to actually blend from a vector. There are already seprate tests for the case of inserting from a scalar. These cases cover a lot of the regressions I've seen in the regression test suite for the new vector shuffle lowering and specifically cover the reported lack of using various zext-ing instruction patterns. My next patch should fix a big chunk of this, but wanted to get a nice baseline for these patterns in the test cases first. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218976 91177308-0d34-0410-b5e6-96231b3b80d8
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