bpo-44889: Specialize LOAD_METHOD with PEP 659 adaptive interpreter (GH-27722)

Adds four new instructions:

* LOAD_METHOD_ADAPTIVE
* LOAD_METHOD_CACHED
* LOAD_METHOD_MODULE
* LOAD_METHOD_CLASS

2 files changed, 20 insertions, 9 deletions

diff --git a/Include/internal/pycore_code.h b/Include/internal/pycore_code.h
index 282089c..6289acd 100644
--- a/Include/internal/pycore_code.h
+++ b/Include/internal/pycore_code.h
@@ -30,6 +30,11 @@ typedef struct {
     uint32_t builtin_keys_version;
 } _PyLoadGlobalCache;
 
+typedef struct {
+    /* Borrowed ref in LOAD_METHOD */
+    PyObject *obj;
+} _PyObjectCache;
+
 /* Add specialized versions of entries to this union.
  *
  * Do not break the invariant: sizeof(SpecializedCacheEntry) == 8
@@ -45,6 +50,7 @@ typedef union {
     _PyAdaptiveEntry adaptive;
     _PyAttrCache attr;
     _PyLoadGlobalCache load_global;
+    _PyObjectCache obj;
 } SpecializedCacheEntry;
 
 #define INSTRUCTIONS_PER_ENTRY (sizeof(SpecializedCacheEntry)/sizeof(_Py_CODEUNIT))
@@ -299,6 +305,7 @@ cache_backoff(_PyAdaptiveEntry *entry) {
 int _Py_Specialize_LoadAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name, SpecializedCacheEntry *cache);
 int _Py_Specialize_StoreAttr(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name, SpecializedCacheEntry *cache);
 int _Py_Specialize_LoadGlobal(PyObject *globals, PyObject *builtins, _Py_CODEUNIT *instr, PyObject *name, SpecializedCacheEntry *cache);
+int _Py_Specialize_LoadMethod(PyObject *owner, _Py_CODEUNIT *instr, PyObject *name, SpecializedCacheEntry *cache);
 int _Py_Specialize_BinarySubscr(PyObject *sub, PyObject *container, _Py_CODEUNIT *instr);
 
 #define PRINT_SPECIALIZATION_STATS 0
diff --git a/Include/opcode.h b/Include/opcode.h
index 3334242..6b02982 100644
--- a/Include/opcode.h
+++ b/Include/opcode.h
@@ -149,15 +149,19 @@ extern "C" {
 #define LOAD_GLOBAL_ADAPTIVE     41
 #define LOAD_GLOBAL_MODULE       42
 #define LOAD_GLOBAL_BUILTIN      43
-#define STORE_ATTR_ADAPTIVE      44
-#define STORE_ATTR_SPLIT_KEYS    45
-#define STORE_ATTR_SLOT          46
-#define STORE_ATTR_WITH_HINT     47
-#define LOAD_FAST__LOAD_FAST     48
-#define STORE_FAST__LOAD_FAST    58
-#define LOAD_FAST__LOAD_CONST    80
-#define LOAD_CONST__LOAD_FAST    81
-#define STORE_FAST__STORE_FAST   87
+#define LOAD_METHOD_ADAPTIVE     44
+#define LOAD_METHOD_CACHED       45
+#define LOAD_METHOD_CLASS        46
+#define LOAD_METHOD_MODULE       47
+#define STORE_ATTR_ADAPTIVE      48
+#define STORE_ATTR_SPLIT_KEYS    58
+#define STORE_ATTR_SLOT          80
+#define STORE_ATTR_WITH_HINT     81
+#define LOAD_FAST__LOAD_FAST     87
+#define STORE_FAST__LOAD_FAST    88
+#define LOAD_FAST__LOAD_CONST   120
+#define LOAD_CONST__LOAD_FAST   122
+#define STORE_FAST__STORE_FAST  123
 #ifdef NEED_OPCODE_JUMP_TABLES
 static uint32_t _PyOpcode_RelativeJump[8] = {
     0U,