detect msvc features

Tencent · Aug 16, 2023 · d0f34d5 · d0f34d5
1 parent e5d86bf
commit d0f34d5
Showing 1 changed file with 14 additions and 8 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -408,15 +408,21 @@ else()
         check_cxx_compiler_flag("/arch:AVX" NCNN_COMPILER_SUPPORT_X86_XOP)
         check_cxx_compiler_flag("/arch:AVX" NCNN_COMPILER_SUPPORT_X86_F16C)
         check_cxx_compiler_flag("/arch:AVX2" NCNN_COMPILER_SUPPORT_X86_AVX2)
-        check_cxx_compiler_flag("/arch:AVX2" NCNN_COMPILER_SUPPORT_X86_AVX_VNNI)
         check_cxx_compiler_flag("/arch:AVX512" NCNN_COMPILER_SUPPORT_X86_AVX512)
-        check_cxx_compiler_flag("/arch:AVX512" NCNN_COMPILER_SUPPORT_X86_AVX512_VNNI)
-        if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.16)
-            # vs2017+ supports avx512 and vnni
-            set(NCNN_COMPILER_SUPPORT_X86_AVX_VNNI OFF)
-            set(NCNN_COMPILER_SUPPORT_X86_AVX512 OFF)
-            set(NCNN_COMPILER_SUPPORT_X86_AVX512_VNNI OFF)
-        endif()
+
+        set(CMAKE_REQUIRED_FLAGS "/arch:AVX2")
+        check_cxx_source_compiles("#include <immintrin.h>\nint main() { __m256i _s, _a, _b; _s = _mm256_dpwssd_epi32(_s, _a, _b); return 0; }" NCNN_COMPILER_SUPPORT_X86_AVX_VNNI)
+
+        set(CMAKE_REQUIRED_FLAGS "/arch:AVX512")
+        check_cxx_source_compiles("#include <immintrin.h>\nint main() { __m512i _s, _a, _b; _s = _mm512_dpwssd_epi32(_s, _a, _b); return 0; }" NCNN_COMPILER_SUPPORT_X86_AVX512_VNNI)
+
+        set(CMAKE_REQUIRED_FLAGS "/arch:AVX512")
+        check_cxx_source_compiles("#include <immintrin.h>\nint main() { __m256bh _s; __m512bh _a, _b; _s = _mm512_cvtneps_pbh(_mm512_dpbf16_ps(_mm512_cvtpbh_ps(_s), _a, _b)); return 0; }" NCNN_COMPILER_SUPPORT_X86_AVX512_BF16)
+
+        set(CMAKE_REQUIRED_FLAGS "/arch:AVX512")
+        check_cxx_source_compiles("#include <immintrin.h>\nint main() { __m512h _s, _a, _b; _s = _mm512_fmadd_ph(_s, _a, _b); __m512 _s2; _s2 = _mm512_cvtxph_ps(_mm512_cvtxps_ph(_s2)); return 0; }" NCNN_COMPILER_SUPPORT_X86_AVX512_FP16)
+
+        unset(CMAKE_REQUIRED_FLAGS)
     else()
         check_cxx_compiler_flag("-mavx" NCNN_COMPILER_SUPPORT_X86_AVX)