Method merge_availability

cranelift/codegen/src/egraph/mod.rs:456–464

(&self, a: Value, b: Value)

    }

    fn merge_availability(&self, a: Value, b: Value) -> Block {
        let a = self.available_block[a];
        let b = self.available_block[b];
        if self.domtree.block_dominates(a, b) {
            a
        } else {
            b
        }
    }

    /// Optimize a "skeleton" instruction.
    ///