[X86] Add test for opportunity to use bzhi X86 instruction instead of load+and instructions.
[X86] Add test for opportunity to use bzhi X86 instruction instead of load+and instructions.

Transformation uploaded for CR in https://reviews.llvm.org/D34141.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@316320 91177308-0d34-0410-b5e6-96231b3b80d8

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