Add a super instruction

Author: mpage

Include/internal/pycore_opcode_metadata.h

@@ -286,6 +286,13 @@ dummy_func(
             value2 = PyStackRef_DUP(GETLOCAL(oparg2));
         }
 
+        inst(LOAD_FAST_BORROW_LOAD_FAST_BORROW, ( -- value1, value2)) {
+            uint32_t oparg1 = oparg >> 4;
+            uint32_t oparg2 = oparg & 15;
+            value1 = PyStackRef_DupDeferred(GETLOCAL(oparg1));
+            value2 = PyStackRef_DupDeferred(GETLOCAL(oparg2));
+        }
+
         family(LOAD_CONST, 0) = {
             LOAD_CONST_MORTAL,
             LOAD_CONST_IMMORTAL,

Include/internal/pycore_uop_ids.h

@@ -546,6 +546,13 @@ _PyCode_Quicken(_Py_CODEUNIT *instructions, Py_ssize_t size, int enable_counters
                 eligible++;
             }
         }
+        else if (opcode == LOAD_FAST_LOAD_FAST) {
+            total++;
+            if (!get_mutated(mutated, oparg >> 4) && !get_mutated(mutated, oparg & 15)) {
+                instructions[i].op.code = LOAD_FAST_BORROW_LOAD_FAST_BORROW;
+                eligible++;
+            }
+        }
         if (opcode != EXTENDED_ARG) {
             oparg = 0;
         }