Merge pull request #98 from eseiler/fix/bmi

[FIX] missing BMI check

CMakeModules/BMI.cpp

@@ -0,0 +1,7 @@
+#include <stdint.h>
+#include <x86intrin.h>
+
+int main()
+{
+    uint64_t res = _tzcnt_u64(1ULL);
+}

CMakeModules/DetectCPUFeatures.cmake

@@ -14,6 +14,11 @@ file(READ "${CMAKE_MODULE_PATH}/SSE42.cpp" test_source_sse42)
 CHECK_CXX_SOURCE_RUNS("${test_source_sse42}" HAVE_SSE42)
 set(CMAKE_REQUIRED_FLAGS "")
 
+set(CMAKE_REQUIRED_FLAGS "-mbmi")
+file(READ "${CMAKE_MODULE_PATH}/BMI.cpp" test_source_bmi)
+CHECK_CXX_SOURCE_RUNS("${test_source_bmi}" HAVE_BMI)
+set(CMAKE_REQUIRED_FLAGS "")
+
 set(CMAKE_REQUIRED_FLAGS "-mbmi2")
 file(READ "${CMAKE_MODULE_PATH}/BMI2.cpp" test_source_bmi2)
 CHECK_CXX_SOURCE_RUNS("${test_source_bmi2}" HAVE_BMI2)
@@ -27,7 +32,17 @@ if(HAVE_SSE42)
   endif()
 else()
   set(HAVE_SSE42 0)
-  message(STATUS "${Red}Compiler does NOT supports SSE4.2${ColourReset}")
+  message(STATUS "${Red}Compiler does NOT support SSE4.2${ColourReset}")
+endif()
+
+if(HAVE_BMI)
+  message(STATUS "${Green}Compiler supports BMI${ColourReset}")
+  if(NOT MSVC)
+    CheckAndAppendCompilerFlags(${CMAKE_BUILD_TYPE} "-mbmi")
+  endif()
+else()
+  set(HAVE_BMI 0)
+  message(STATUS "${Red}Compiler does NOT support BMI${ColourReset}")
 endif()
 
 if(HAVE_BMI2)
@@ -37,7 +52,7 @@ if(HAVE_BMI2)
   endif()
 else()
   set(HAVE_BMI2 0)
-  message(STATUS "${Red}Compiler does NOT supports BMI2${ColourReset}")
+  message(STATUS "${Red}Compiler does NOT support BMI2${ColourReset}")
 endif()
 
 file(READ "${CMAKE_MODULE_PATH}/MODETI.cpp" test_source_modeti)