diff --git a/llvm/cmake/modules/GetHostTriple.cmake b/llvm/cmake/modules/GetHostTriple.cmake
index 1be13bc01ab9b..d3b26d445c996 100644
--- a/llvm/cmake/modules/GetHostTriple.cmake
+++ b/llvm/cmake/modules/GetHostTriple.cmake
@@ -2,7 +2,7 @@
 # Invokes config.guess
 
 function( get_host_triple var )
-  if( MSVC )
+  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.*" )
@@ -41,7 +41,7 @@ function( get_host_triple var )
     else()
       set( value "powerpc-ibm-aix" )
     endif()
-  else( MSVC )
+  else()
     if(CMAKE_HOST_SYSTEM_NAME STREQUAL Windows AND NOT MSYS)
       message(WARNING "unable to determine host target triple")
     else()