Assert that the non-fixed inputs to return match the function's signature.

2018-11-06 12:08:34 -08:00
parent 05c0b3bdd1
commit 681cb5e20a
1 changed files with 5 additions and 0 deletions
--- a/lib/codegen/src/regalloc/spilling.rs
+++ b/lib/codegen/src/regalloc/spilling.rs
@@ -348,6 +348,11 @@ impl<'a> Context<'a> {
        // Similarly, for return instructions, collect uses of ABI-defined
        // return values.
        if self.cur.func.dfg[inst].opcode().is_return() {
+            debug_assert_eq!(
+                self.cur.func.dfg.inst_variable_args(inst).len(),
+                self.cur.func.signature.returns.len(),
+                "The non-fixed arguments in a return should follow the function's signature."
+            );
            for (ret_idx, (ret, &arg)) in
                self.cur.func.signature.returns.iter().zip(args).enumerate()
            {