You can consider renaming the compilation stages to make their purpose clearer:
lower1 -> oomir_gen
optimise1 -> oomir_opt
lower2 -> codegen or jvm_codegen or bytecode_gen
optimise2 -> bytecode_opt
java-linker -> jvm-linker or jar-linker (Makes it clearer that its linking bytecode, no Java is involved here)
You can consider renaming the compilation stages to make their purpose clearer:
lower1->oomir_genoptimise1->oomir_optlower2->codegenorjvm_codegenorbytecode_genoptimise2->bytecode_optjava-linker->jvm-linkerorjar-linker(Makes it clearer that its linking bytecode, no Java is involved here)