Activate AVX512 in MSVC and Intel compilers

Blosc · Nov 1, 2023 · 5cd384c · 5cd384c
1 parent e01c72a
commit 5cd384c
Showing 1 changed file with 7 additions and 5 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -303,22 +303,24 @@ if(CMAKE_SYSTEM_PROCESSOR STREQUAL i386 OR
             set(COMPILER_SUPPORT_AVX512 FALSE)
         endif()
     elseif(CMAKE_C_COMPILER_ID STREQUAL Intel)
+        # All Intel compilers since the introduction of AVX512 in 2016 should support it, so activate all SIMD flavors
         set(COMPILER_SUPPORT_SSE2 TRUE)
-        if(CMAKE_C_COMPILER_VERSION VERSION_GREATER 14.0 OR CMAKE_C_COMPILER_VERSION VERSION_EQUAL 14.0)
-            set(COMPILER_SUPPORT_AVX2 TRUE)
-        else()
-            set(COMPILER_SUPPORT_AVX2 FALSE)
-        endif()
+        set(COMPILER_SUPPORT_AVX2 TRUE)
+        set(COMPILER_SUPPORT_AVX512 TRUE)
     elseif(MSVC)
         set(COMPILER_SUPPORT_SSE2 TRUE)
         if(CMAKE_C_COMPILER_VERSION VERSION_GREATER 18.00.30501 OR CMAKE_C_COMPILER_VERSION VERSION_EQUAL 18.00.30501)
             set(COMPILER_SUPPORT_AVX2 TRUE)
+        # AVX512 starts to be supported since Visual Studio 17 15.0
+        elseif(CMAKE_C_COMPILER_VERSION VERSION_GREATER 19.10.25017 OR CMAKE_C_COMPILER_VERSION VERSION_EQUAL 19.10.25017)
+                set(COMPILER_SUPPORT_AVX512 TRUE)
         else()
             set(COMPILER_SUPPORT_AVX2 FALSE)
         endif()
     else()
         set(COMPILER_SUPPORT_SSE2 FALSE)
         set(COMPILER_SUPPORT_AVX2 FALSE)
+        set(COMPILER_SUPPORT_AVX512 FALSE)
         # Unrecognized compiler. Emit a warning message to let the user know hardware-acceleration won't be available.
         message(WARNING "Unable to determine which ${CMAKE_SYSTEM_PROCESSOR} hardware features are supported by the C compiler (${CMAKE_C_COMPILER_ID} ${CMAKE_C_COMPILER_VERSION}).")
     endif()