Merge branch 'predication' into 'main'

Cargo.lock

hercules_cg/src/gcm.rs

hercules_ir/src/dom.rs

hercules_ir/src/ir.rs

hercules_ir/src/schedule.rs

hercules_opt/Cargo.toml

hercules_opt/src/forkify.rs

hercules_opt/src/lib.rs

hercules_opt/src/pass.rs

hercules_opt/src/pred.rs

hercules_samples/sum_sample.hir

hercules_tools/hercules_dot/src/main.rs