bpo-46841: Use inline caching for `UNPACK_SEQUENCE` (GH-31591)

1 files changed, 8 insertions, 1 deletions

diff --git a/Include/internal/pycore_code.h b/Include/internal/pycore_code.h
index 0c4850f..0e401d6 100644
--- a/Include/internal/pycore_code.h
+++ b/Include/internal/pycore_code.h
@@ -68,9 +68,16 @@ typedef struct {
     _Py_CODEUNIT counter;
 } _PyBinaryOpCache;
 
+typedef struct {
+    _Py_CODEUNIT counter;
+} _PyUnpackSequenceCache;
+
 #define INLINE_CACHE_ENTRIES_BINARY_OP \
     (sizeof(_PyBinaryOpCache) / sizeof(_Py_CODEUNIT))
 
+#define INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE \
+    (sizeof(_PyUnpackSequenceCache) / sizeof(_Py_CODEUNIT))
+
 /* Maximum size of code to quicken, in code units. */
 #define MAX_SIZE_TO_QUICKEN 5000
 
@@ -312,7 +319,7 @@ extern void _Py_Specialize_BinaryOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *
                              int oparg);
 extern void _Py_Specialize_CompareOp(PyObject *lhs, PyObject *rhs, _Py_CODEUNIT *instr, SpecializedCacheEntry *cache);
 extern void _Py_Specialize_UnpackSequence(PyObject *seq, _Py_CODEUNIT *instr,
-                                   SpecializedCacheEntry *cache);
+                                          int oparg);
 
 /* Deallocator function for static codeobjects used in deepfreeze.py */
 extern void _PyStaticCode_Dealloc(PyCodeObject *co);