diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake
--- a/llvm/cmake/modules/AddLLVM.cmake
+++ b/llvm/cmake/modules/AddLLVM.cmake
@@ -25,7 +25,9 @@
   else()
     if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
       list(APPEND LLVM_COMPILE_FLAGS "-fno-exceptions")
-      if(NOT LLVM_ENABLE_UNWIND_TABLES)
+      if(LLVM_ENABLE_UNWIND_TABLES)
+        list(APPEND LLVM_COMPILE_FLAGS "-funwind-tables")
+      else()
         list(APPEND LLVM_COMPILE_FLAGS "-fno-unwind-tables")
         list(APPEND LLVM_COMPILE_FLAGS "-fno-asynchronous-unwind-tables")
       endif()