Use -Dgraal.Dump=:2. We reduced the default verbosity of the graph dumping to level 1 and using :2 sets it to 2 which gives you a dump after every phase which was the old behaviour. tom Haluk Dogan wrote: > mx unittest -XX:+UseJVMCICompiler -Dgraal.Dump > -D:MethodFilter=String.hashCode GraalTutorial#testStringHashCode