gh-105481: simplify definition of pseudo ops in Lib/opcode.py (#107561)

1 files changed, 15 insertions, 29 deletions

diff --git a/Lib/opcode.py b/Lib/opcode.py
index 51432ab..5a9f8dd 100644
--- a/Lib/opcode.py
+++ b/Lib/opcode.py
@@ -19,23 +19,11 @@ if sys.version_info[:2] >= (3, 13):
 
 cmp_op = ('<', '<=', '==', '!=', '>', '>=')
 
-def is_pseudo(op):
-    return op >= MIN_PSEUDO_OPCODE and op <= MAX_PSEUDO_OPCODE
-
 opmap = {}
 
-# pseudo opcodes (used in the compiler) mapped to the values
-# they can become in the actual code.
-_pseudo_ops = {}
-
 def def_op(name, op):
     opmap[name] = op
 
-def pseudo_op(name, op, real_ops):
-    def_op(name, op)
-    _pseudo_ops[name] = real_ops
-
-
 # Instruction opcodes for compiled code
 # Blank lines correspond to available opcodes
 
@@ -212,29 +200,27 @@ def_op('INSTRUMENTED_LINE', 254)
 # 255 is reserved
 
 
-MIN_PSEUDO_OPCODE = 256
-
-pseudo_op('SETUP_FINALLY', 256, ['NOP'])
-pseudo_op('SETUP_CLEANUP', 257, ['NOP'])
-pseudo_op('SETUP_WITH', 258, ['NOP'])
-pseudo_op('POP_BLOCK', 259, ['NOP'])
+# Pseudo ops are above 255:
 
-pseudo_op('JUMP', 260, ['JUMP_FORWARD', 'JUMP_BACKWARD'])
-pseudo_op('JUMP_NO_INTERRUPT', 261, ['JUMP_FORWARD', 'JUMP_BACKWARD_NO_INTERRUPT'])
+def_op('SETUP_FINALLY', 256)
+def_op('SETUP_CLEANUP', 257)
+def_op('SETUP_WITH', 258)
+def_op('POP_BLOCK', 259)
 
-pseudo_op('LOAD_METHOD', 262, ['LOAD_ATTR'])
-pseudo_op('LOAD_SUPER_METHOD', 263, ['LOAD_SUPER_ATTR'])
-pseudo_op('LOAD_ZERO_SUPER_METHOD', 264, ['LOAD_SUPER_ATTR'])
-pseudo_op('LOAD_ZERO_SUPER_ATTR', 265, ['LOAD_SUPER_ATTR'])
+def_op('JUMP', 260)
+def_op('JUMP_NO_INTERRUPT', 261)
 
-pseudo_op('STORE_FAST_MAYBE_NULL', 266, ['STORE_FAST'])
-pseudo_op('LOAD_CLOSURE', 267, ['LOAD_FAST'])
+def_op('LOAD_METHOD', 262)
+def_op('LOAD_SUPER_METHOD', 263)
+def_op('LOAD_ZERO_SUPER_METHOD', 264)
+def_op('LOAD_ZERO_SUPER_ATTR', 265)
 
-MAX_PSEUDO_OPCODE = MIN_PSEUDO_OPCODE + len(_pseudo_ops) - 1
+def_op('STORE_FAST_MAYBE_NULL', 266)
+def_op('LOAD_CLOSURE', 267)
 
-del def_op, pseudo_op
+del def_op
 
-opname = ['<%r>' % (op,) for op in range(MAX_PSEUDO_OPCODE + 1)]
+opname = ['<%r>' % (op,) for op in range(max(opmap.values()) + 1)]
 for op, i in opmap.items():
     opname[i] = op