Add Rust implementation and address review comments of #742;

2019-05-17 17:16:52 +02:00
parent 71a345e813
commit 97ebaa6f37
3 changed files with 49 additions and 18 deletions
--- a/cranelift/codegen/meta/src/cdsl/inst.rs
+++ b/cranelift/codegen/meta/src/cdsl/inst.rs
@@ -373,7 +373,7 @@ fn verify_polymorphic(
            let tv = operands_in[op_num].type_var().unwrap();
            let free_typevar = tv.free_typevar();
            if (free_typevar.is_some() && tv == &free_typevar.unwrap())
-                || !tv.singleton_type().is_none()
+                || tv.singleton_type().is_some()
            {
                match verify_ctrl_typevar(tv, &value_opnums, &operands_in, &operands_out) {
                    Ok(typevars) => {