Cargo.toml

[package]
name = "hq9c"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
clap = { version = "3.2.17", features = ["derive"] }
tempfile = "3.3.0"

# VITAL SPEED OPTIMIZATION

[profile.release]
opt-level = "s"
strip = "debuginfo"
debug-assertions = false
debug = false
lto = "fat"
panic = "abort"
codegen-units = 1

# This changes to the release will produce a slower compilation, but will gain runtime performance. In my machine the changes were this:

# release:
#
# $ time ./target/release/hq9c -o test test.hq9p
#
# ./target/debug/hq9c -o test test.hq9p 0.15s user 0.06s system 106% cpu 0.199
#
# debug:
# $ time ./target/release/hq9c -o test test.hq9p
#
# ./target/debug/hq9c -o test test.hq9p 0.15s user 0.07s system 108% cpu 0.198

# As we can see, we gained 0.01 system seconds, 2%  cpu usage and 0.001 points. In general this is a success, just with 7.5 seconds of difference between debug and release!