Fail if CPU is older than Sandy Bridge and ASM optimizations are enabled.

naushniki · naushniki · commit cb5156c1f18c · 2021-06-28T20:35:09.000+03:00
diff --git a/cmake/OptimizeForArchitecture.cmake b/cmake/OptimizeForArchitecture.cmake
@@ -151,9 +151,13 @@ macro(AutodetectHostArchitecture)
             set(TARGET_ARCHITECTURE "ivy-bridge")
          elseif(_cpu_model EQUAL 42 OR _cpu_model EQUAL 45)
             set(TARGET_ARCHITECTURE "sandy-bridge")
+         elseif(_cpu_model GREATER 42)
+            message(WARNING "Your CPU (family ${_cpu_family}, model ${_cpu_model}) is not known. Auto-detection of optimization flags failed and will use the minimum required microarchitecture(sandy-bridge).")         
+         elseif(NOT ASM_OPTIMIZATIONS)
+            message(WARNING "Your CPU (family ${_cpu_family}, model ${_cpu_model}) is not known. This is not fatal because ASM_OPTIMIZATIONS are disabled. If you want to use ASM_OPTIMIZATIONS make sure you have a compliant CPU(sandy-bridge or newer) and review the \"cmake/OptimizeForArchitecture.cmake\" script.")
+            set(TARGET_ARCHITECTURE "generic")
          else()
-            message(WARNING "Your CPU (family ${_cpu_family}, model ${_cpu_model}) is not known. Auto-detection of optimization flags failed and will use the minimum required microarchitecture(sandy-bridge).")
-            set(TARGET_ARCHITECTURE "sandy-bridge")
+            message(FATAL_ERROR "Your CPU (family ${_cpu_family}, model ${_cpu_model}) is not known. This is fatal, because ASM_OPTIMIZATIONS are ON. If your CPU microarchitecture is sandy-bridge or newer, please review the \"cmake/OptimizeForArchitecture.cmake\" script. If you have an older CPU, use -DASM_OPTIMIZATIONS=Off.")
          endif()
       elseif(_cpu_family EQUAL 7) # Itanium (not supported)
          message(WARNING "Your CPU (Itanium: family ${_cpu_family}, model ${_cpu_model}) is not supported by OptimizeForArchitecture.cmake.")
