GH-94163: Add BINARY_SLICE and STORE_SLICE instructions.

Doc/library/dis.rst

@@ -446,12 +446,13 @@ result back on the stack.
 
 **Binary and in-place operations**
 
-Binary operations remove the top of the stack (TOS) and the second top-most
-stack item (TOS1) from the stack.  They perform the operation, and put the
-result back on the stack.
+In the following, TOS is the top-of-stack.
+TOS1, TOS2, TOS3 are the second, thrid and fourth items on the stack, respectively.
+
+Binary operations remove the top two items from the stack (TOS and TOS1).
+They perform the operation, then put the result back on the stack.
 
-In-place operations are like binary operations, in that they remove TOS and
-TOS1, and push the result back on the stack, but the operation is done in-place
+In-place operations are like binary operations, but the operation is done in-place
 when TOS1 supports it, and the resulting TOS may be (but does not have to be)
 the original TOS1.
 
@@ -460,6 +461,7 @@ the original TOS1.
 
    Implements the binary and in-place operators (depending on the value of
    *op*).
+   ``TOS = TOS1 op TOS``.
 
    .. versionadded:: 3.11
 
@@ -479,6 +481,20 @@ the original TOS1.
    Implements ``del TOS1[TOS]``.
 
 
+.. opcode:: BINARY_SLICE
+
+   Implements ``TOS = TOS2[TOS1:TOS]``.
+
+   .. versionadded:: 3.12
+
+
+.. opcode:: STORE_SLICE
+
+   Implements ``TOS2[TOS1:TOS] = TOS3``.
+
+   .. versionadded:: 3.12
+
+
 **Coroutine opcodes**
 
 .. opcode:: GET_AWAITABLE (where)

Include/internal/pycore_sliceobject.h

@@ -13,6 +13,8 @@ extern "C" {
 
 extern void _PySlice_Fini(PyInterpreterState *);
 
+extern PyObject *
+_PyBuildSlice_ConsumeRefs(PyObject *start, PyObject *stop);
 
 #ifdef __cplusplus
 }

Lib/importlib/_bootstrap_external.py

@@ -409,6 +409,7 @@ def _write_atomic(path, data, mode=0o666):
 #     Python 3.12a1 3503 (Shrink LOAD_METHOD cache)
 #     Python 3.12a1 3504 (Merge LOAD_METHOD back into LOAD_ATTR)
 #     Python 3.12a1 3505 (Specialization/Cache for FOR_ITER)
+#     Python 3.12a1 3506 (Add BINARY_SLICE and STORE_SLICE instructions)
 
 #     Python 3.13 will start with 3550
 
@@ -422,7 +423,7 @@ def _write_atomic(path, data, mode=0o666):
 # Whenever MAGIC_NUMBER is changed, the ranges in the magic_values array
 # in PC/launcher.c must also be updated.
 
-MAGIC_NUMBER = (3505).to_bytes(2, 'little') + b'\r\n'
+MAGIC_NUMBER = (3506).to_bytes(2, 'little') + b'\r\n'
 
 _RAW_MAGIC_NUMBER = int.from_bytes(MAGIC_NUMBER, 'little')  # For import.c