- add verbose option to debug CI build failure

Author: eeckstein

SwiftCompilerSources/CMakeLists.txt

@@ -183,6 +183,7 @@ function(add_swift_compiler_modules_library name)
     # Workaround a crash in the LoadableByAddress pass
     # https://github.com/apple/swift/issues/73254
     list(APPEND swift_compile_options "-Xllvm" "-sil-disable-pass=loadable-address")
+    list(APPEND swift_compile_options "-v" "-Xcc" "-v")
   else()
     list(APPEND sdk_option "-I" "${swift_exec_bin_dir}/../lib" "-I" "${sdk_path}/usr/lib")
   endif()