Adds a comment to the start of each test summarizing the area the test covers. llvm-svn: 189465
Includes: madd_q, maddr_q, maddv, max_[asu], maxi_[su], min_[asu], mini_[su], mod_[su], msub_q, msubr_q, msubv, mul_q, mulr_q, mulv, nloc, nlzc, nori, ori, pckev, pckod, pcnt, sat_[su], shf, sld, sldi, sll, slli, splat, splati, sr[al], sr[al]i, subs_[su], subss_u, subus_s, subv, subvi, vshf, xori Patch by Daniel Sanders llvm-svn: 188460