add NOT MINGW AND NOT MSYS

Change-Id: I93d2d9c5bb07f02309724ee1124d8ca7db29ad62

Author: DanielKristofKiss

llvm/cmake/modules/GetHostTriple.cmake

@@ -2,7 +2,7 @@
 # Invokes config.guess
 
 function( get_host_triple var )
-  if( MSVC OR (CMAKE_SYSTEM_NAME STREQUAL Windows AND CMAKE_C_COMPILER_ID MATCHES "Clang"))
+  if( MSVC OR (CMAKE_SYSTEM_NAME STREQUAL "Windows" AND CMAKE_C_COMPILER_ID MATCHES "Clang" AND NOT MINGW AND NOT MSYS))
     if( CMAKE_C_COMPILER_ARCHITECTURE_ID MATCHES "ARM64.*" )
       set( value "aarch64-pc-windows-msvc" )
     elseif( CMAKE_C_COMPILER_ARCHITECTURE_ID MATCHES "ARM.*" )