More optimization

hercules_ir/src/einsum.rs

hercules_ir/src/typecheck.rs

juno_samples/fork_join_tests/src/cpu.sch

juno_samples/fork_join_tests/src/fork_join_tests.jn

juno_samples/fork_join_tests/src/gpu.sch

juno_samples/fork_join_tests/src/main.rs

juno_samples/rodinia/srad/benches/srad_bench.rs

juno_samples/rodinia/srad/src/cpu.sch

juno_samples/rodinia/srad/src/gpu.sch

juno_samples/rodinia/srad/src/lib.rs

juno_samples/rodinia/srad/src/rust_srad.rs

juno_samples/rodinia/srad/src/srad.jn

juno_scheduler/src/pm.rs