Function types

cranelift/codegen/src/ir/builder.rs:318–336

()

    #[test]
    fn types() {
        let mut func = Function::new();
        let block0 = func.dfg.make_block();
        let arg0 = func.dfg.append_block_param(block0, I32);
        let mut pos = FuncCursor::new(&mut func);
        pos.insert_block(block0);

        // Explicit types.
        let v0 = pos.ins().iconst(I32, 3);
        assert_eq!(pos.func.dfg.value_type(v0), I32);

        // Inferred from inputs.
        let v1 = pos.ins().iadd(arg0, v0);
        assert_eq!(pos.func.dfg.value_type(v1), I32);

        // Formula.
        let cmp = pos.ins().icmp(IntCC::Equal, arg0, v0);
        assert_eq!(pos.func.dfg.value_type(cmp), I8);
    }

    #[test]
    fn reuse_results() {