Move redundant-vf2-cost.ll test to X86 directory

redundant-vf2-cost.ll is X86 specific. Moved from
test/Transforms/LoopVectorize/redundant-vf2-cost.ll to
test/Transforms/LoopVectorize/X86/redundant-vf2-cost.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334854 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/LoopVectorize/redundant-vf2-cost.ll b/test/Transforms/LoopVectorize/X86/redundant-vf2-cost.ll
similarity index 100%
rename from test/Transforms/LoopVectorize/redundant-vf2-cost.ll
rename to test/Transforms/LoopVectorize/X86/redundant-vf2-cost.ll