Method from_str

cranelift/codegen/src/ir/instructions.rs:332–341

Parse an Opcode name from a string.

(s: &str)

    /// Parse an Opcode name from a string.
    fn from_str(s: &str) -> Result<Self, &'static str> {
        use crate::constant_hash::{probe, simple_hash};

        match probe::<&str, [Option<Self>]>(&OPCODE_HASH_TABLE, s, simple_hash(s)) {
            Err(_) => Err("Unknown opcode"),
            // We unwrap here because probe() should have ensured that the entry
            // at this index is not None.
            Ok(i) => Ok(OPCODE_HASH_TABLE[i].unwrap()),
        }
    }
}

impl<'a> Table<&'a str> for [Option<Opcode>] {