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GH-128914: Remove all but one conditional stack effects (GH-129226)

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* Remove all 'if (0)' and 'if (1)' conditional stack effects

* Use array instead of conditional for BUILD_SLICE args

* Refactor LOAD_GLOBAL to use a common conditional uop

* Remove conditional stack effects from LOAD_ATTR specializations

* Replace conditional stack effects in LOAD_ATTR with a 0 or 1 sized array.

* Remove conditional stack effects from CALL_FUNCTION_EX
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Mark Shannon 2025-01-27 16:24:48 +00:00 • committed by GitHub
parent 8ec76d9034
commit 75b4962157
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19 changed files with 518 additions and 758 deletions
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Lib/test/test__opcode.py
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@ -65,8 +65,7 @@ class OpListTests(unittest.TestCase):
class StackEffectTests(unittest.TestCase):
def test_stack_effect(self):
self.assertEqual(stack_effect(dis.opmap['POP_TOP']), -1)
self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 0), -1)
self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 1), -1)
self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 2), -1)
self.assertEqual(stack_effect(dis.opmap['BUILD_SLICE'], 3), -2)
self.assertRaises(ValueError, stack_effect, 30000)
# All defined opcodes