Make EAGER_IMPORT_NAME use an unused opcode slot

Summary: This makes the `EAGER_IMPORT_NAME` opcode use an used slot on 3.14's existing opcode space. This stops the opcodes from shuffling around vs stock 3.14.

Reviewed By: itamaro

Differential Revision: D84212086

fbshipit-source-id: dcc240254fe1c9b821e11b01ea33b9ec45ecb6d0

Author: DinoV

Include/internal/pycore_magic_number.h

@@ -281,6 +281,7 @@ Known values:
     Python 3.14rc2 3626 (Fix missing exception handlers in logical expression)
     Python 3.14rc3 3627 (Fix miscompilation of some module-level annotations)
     [META] Python 3.14rc3+meta 3628 (Lazy Imports introduces new opcode and compiler changes around import statement compilation)
+    [META] Python 3.14+meta 3629 Lazy imports EAGER_IMPORT_NAME doesn't reshuffle opcode numbers
 
     Python 3.15 will start with 3650
 
@@ -293,7 +294,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3628
+#define PYC_MAGIC_NUMBER 3629
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \

Include/opcode_ids.h

@@ -635,7 +635,7 @@ def test_magic_number(self):
         # stakeholders such as OS package maintainers must be notified
         # in advance. Such exceptional releases will then require an
         # adjustment to this test case.
-        EXPECTED_MAGIC_NUMBER = 3628
+        EXPECTED_MAGIC_NUMBER = 3629
         actual = int.from_bytes(importlib.util.MAGIC_NUMBER[:2], 'little')
 
         msg = (

Lib/_opcode_metadata.py

@@ -1038,6 +1038,7 @@ def assign_opcodes(
     if "EXTENDED_OPCODE" in instructions:
         instmap["EXTENDED_OPCODE"] = 126
 
+    instmap["EAGER_IMPORT_NAME"] = 121
     instmap["INSTRUMENTED_LINE"] = 254
     instmap["ENTER_EXECUTOR"] = 255