craig.topper added inline comments. ================ Comment at: test/CodeGen/gfni-builtins.c:45 + +#ifdef AVX512 +__m512i test_mm512_gf2p8affineinv_epi64_epi8(__m512i A, __m512i B) { ---------------- Doesn't the define have underscores around it? Repository: rC Clang https://reviews.llvm.org/D41582