Support Fission (-gsplit-dwarf) when generating C++ modular object files.
MOS_MIGRATED_REVID=150751431
@@ -899,6 +899,7 @@ public class CppConfiguration extends BuildConfiguration.Fragment {
+ " flag_set {"
+ " action: 'c-compile'"
+ " action: 'c++-compile'"
+ + " action: 'c++-module-codegen'"
+ " action: 'assemble'"
+ " action: 'preprocess-assemble'"
+ " action: 'lto-backend'"
