[NFC] Adjust test filename

llvm-svn: 370939

diff --git a/llvm/test/Transforms/InstCombine/sub-and-or-not-xor.ll b/llvm/test/Transforms/InstCombine/sub-and-or-neg-xor.ll
similarity index 100%
rename from llvm/test/Transforms/InstCombine/sub-and-or-not-xor.ll
rename to llvm/test/Transforms/InstCombine/sub-and-or-neg-xor.ll