gh-100239: replace BINARY_SUBSCR & family by BINARY_OP with oparg NB_SUBSCR

Include/internal/pycore_code.h

@@ -338,8 +338,6 @@ extern void _Py_Specialize_StoreAttr(_PyStackRef owner, _Py_CODEUNIT *instr,
                                      PyObject *name);
 extern void _Py_Specialize_LoadGlobal(PyObject *globals, PyObject *builtins,
                                       _Py_CODEUNIT *instr, PyObject *name);
-extern void _Py_Specialize_BinarySubscr(_PyStackRef sub, _PyStackRef container,
-                                        _Py_CODEUNIT *instr);
 extern void _Py_Specialize_StoreSubscr(_PyStackRef container, _PyStackRef sub,
                                        _Py_CODEUNIT *instr);
 extern void _Py_Specialize_Call(_PyStackRef callable, _Py_CODEUNIT *instr,
@@ -586,6 +584,7 @@ typedef int (*binaryopguardfunc)(PyObject *lhs, PyObject *rhs);
 typedef PyObject *(*binaryopactionfunc)(PyObject *lhs, PyObject *rhs);
 
 typedef struct {
+    int oparg;
     binaryopguardfunc guard;
     binaryopactionfunc action;
 } _PyBinaryOpSpecializationDescr;

Include/internal/pycore_magic_number.h

@@ -268,6 +268,7 @@ Known values:
     Python 3.14a4 3613 (Add LOAD_CONST_MORTAL instruction)
     Python 3.14a5 3614 (Add BINARY_OP_EXTEND)
     Python 3.14a5 3615 (CALL_FUNCTION_EX always take a kwargs argument)
+    Python 3.14a5 3616 (Remove BINARY_SUBSCR and family. Make them BINARY_OPs)
 
     Python 3.15 will start with 3650
 
@@ -280,7 +281,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3615
+#define PYC_MAGIC_NUMBER 3616
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \