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GH-98831: Modernize a ton of simpler instructions (#100545)

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* load_const and load_fast aren't families for now
* Don't decref unmoved names
* Modernize GET_ANEXT
* Modernize GET_AWAITABLE
* Modernize ASYNC_GEN_WRAP
* Modernize YIELD_VALUE
* Modernize POP_EXCEPT (in more than one way)
* Modernize PREP_RERAISE_STAR
* Modernize LOAD_ASSERTION_ERROR
* Modernize LOAD_BUILD_CLASS
* Modernize STORE_NAME
* Modernize LOAD_NAME
* Modernize LOAD_CLASSDEREF
* Modernize LOAD_DEREF
* Modernize STORE_DEREF
* Modernize COPY_FREE_VARS (mark it as done)
* Modernize LIST_TO_TUPLE
* Modernize LIST_EXTEND
* Modernize SET_UPDATE
* Modernize SETUP_ANNOTATIONS
* Modernize DICT_UPDATE
* Modernize DICT_MERGE
* Modernize MAP_ADD
* Modernize IS_OP
* Modernize CONTAINS_OP
* Modernize CHECK_EXC_MATCH
* Modernize IMPORT_NAME
* Modernize IMPORT_STAR
* Modernize IMPORT_FROM
* Modernize JUMP_FORWARD (mark it as done)
* Modernize JUMP_BACKWARD (mark it as done)
This commit is contained in:
Guido van Rossum 2022-12-27 17:11:03 -08:00 • committed by GitHub
parent 3dc48dabd4
commit 08e5594cf3
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 242 additions and 349 deletions
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19
Tools/cases_generator/generate_cases.py
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@ -125,6 +125,7 @@ class Instruction:
# Set later
family: parser.Family | None = None
predicted: bool = False
unmoved_names: frozenset[str] = frozenset()
def __init__(self, inst: parser.InstDef):
self.inst = inst
@ -141,6 +142,13 @@ def __init__(self, inst: parser.InstDef):
effect for effect in inst.inputs if isinstance(effect, StackEffect)
]
self.output_effects = inst.outputs # For consistency/completeness
unmoved_names: set[str] = set()
for ieffect, oeffect in zip(self.input_effects, self.output_effects):
if ieffect.name == oeffect.name:
unmoved_names.add(ieffect.name)
else:
break
self.unmoved_names = frozenset(unmoved_names)
def write(self, out: Formatter) -> None:
"""Write one instruction, sans prologue and epilogue."""
@ -175,12 +183,8 @@ def write(self, out: Formatter) -> None:
out.stack_adjust(diff)
# Write output stack effect assignments
unmoved_names: set[str] = set()
for ieffect, oeffect in zip(self.input_effects, self.output_effects):
if ieffect.name == oeffect.name:
unmoved_names.add(ieffect.name)
for i, oeffect in enumerate(reversed(self.output_effects), 1):
if oeffect.name not in unmoved_names:
if oeffect.name not in self.unmoved_names:
dst = StackEffect(f"PEEK({i})", "")
out.assign(dst, oeffect)
@ -235,7 +239,8 @@ def write_body(self, out: Formatter, dedent: int, cache_adjust: int = 0) -> None
elif m := re.match(r"(\s*)DECREF_INPUTS\(\);\s*$", line):
space = m.group(1)
for ieff in self.input_effects:
out.write_raw(f"{extra}{space}Py_DECREF({ieff.name});\n")
if ieff.name not in self.unmoved_names:
out.write_raw(f"{extra}{space}Py_DECREF({ieff.name});\n")
else:
out.write_raw(extra + line)
@ -533,7 +538,7 @@ def stack_analysis(
) -> tuple[list[StackEffect], int]:
"""Analyze a super-instruction or macro.
Print an error if there's a cache effect (which we don't support yet).
Ignore cache effects.
Return the list of variable names and the initial stack pointer.
"""