[CMake] Bug 23468 - LLVM_OPTIMIZED_TABLEGEN does not work with Visual Studio

[beanz]

Summary

Multi-configuration builds put their binaries into ${CMAKE_BINARY_DIR}/Release/bin/. The table-gen cross-compilation support needs to take that into account.

[beanz]

I also feel I should add that I've tested this against Xcode, so it does work in principal. I haven't tested it against Visual Studio because I'm on Darwin.

[yaron.keren]

This works well with Visual C++ 2013, LGTM.
Thanks for fixing this!

llvm/trunk/cmake/modules/TableGen.cmake

macro(add_tablegen target project)
   endif()
 
   # Effective tblgen executable to be used:
   set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE)
   set(${project}_TABLEGEN_TARGET ${${project}_TABLEGEN} PARENT_SCOPE)
 
   if(LLVM_USE_HOST_TOOLS)
     if( ${${project}_TABLEGEN} STREQUAL "${target}" )
+      if (NOT CMAKE_CONFIGURATION_TYPES)
         set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/bin/${target}")
+      else()
+        set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/Release/bin/${target}")
+      endif()
       set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE)
 
       add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE}
         COMMAND ${CMAKE_COMMAND} --build . --target ${target} --config Release
         DEPENDS CONFIGURE_LLVM_NATIVE ${target}
         WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
         COMMENT "Building native TableGen...")
       add_custom_target(${project}-tablegen-host DEPENDS ${${project}_TABLEGEN_EXE})