https://github.com/python/cpython/commit/b5558cd63c62855ed43d66a55907f9d4398134e3
commit: b5558cd63c62855ed43d66a55907f9d4398134e3
branch: main
author: Mark Shannon <m...@hotpy.org>
committer: markshannon <m...@hotpy.org>
date: 2025-01-17T16:59:30Z
summary:
Refactor code generators a bit (GH-128920)
Refactor code generators a bit to avoid passing stack property around all over
the place
files:
M Tools/cases_generator/optimizer_generator.py
M Tools/cases_generator/stack.py
diff --git a/Tools/cases_generator/optimizer_generator.py
b/Tools/cases_generator/optimizer_generator.py
index d08b621aed552b..2928440fecca0c 100644
--- a/Tools/cases_generator/optimizer_generator.py
+++ b/Tools/cases_generator/optimizer_generator.py
@@ -126,7 +126,7 @@ def write_uop(
try:
out.start_line()
if override:
- code_list, storage = Storage.for_uop(stack, prototype,
extract_bits=False)
+ code_list, storage = Storage.for_uop(stack, prototype)
for code in code_list:
out.emit(code)
if debug:
@@ -151,11 +151,11 @@ def write_uop(
var.defined = False
storage = emitter.emit_tokens(override, storage, None)
out.start_line()
- storage.flush(out, cast_type="_Py_UopsSymbol *",
extract_bits=False)
+ storage.flush(out, cast_type="_Py_UopsSymbol *")
else:
emit_default(out, uop, stack)
out.start_line()
- stack.flush(out, cast_type="_Py_UopsSymbol *", extract_bits=False)
+ stack.flush(out, cast_type="_Py_UopsSymbol *")
except StackError as ex:
raise analysis_error(ex.args[0], prototype.body[0]) # from None
@@ -198,7 +198,7 @@ def generate_abstract_interpreter(
declare_variables(override, out, skip_inputs=False)
else:
declare_variables(uop, out, skip_inputs=True)
- stack = Stack()
+ stack = Stack(False)
write_uop(override, uop, out, stack, debug, skip_inputs=(override is
None))
out.start_line()
out.emit("break;\n")
diff --git a/Tools/cases_generator/stack.py b/Tools/cases_generator/stack.py
index 286f47d0cfb11b..5121837ed8334b 100644
--- a/Tools/cases_generator/stack.py
+++ b/Tools/cases_generator/stack.py
@@ -224,13 +224,14 @@ def array_or_scalar(var: StackItem | Local) -> str:
return "array" if var.is_array() else "scalar"
class Stack:
- def __init__(self) -> None:
+ def __init__(self, extract_bits: bool=True) -> None:
self.top_offset = StackOffset.empty()
self.base_offset = StackOffset.empty()
self.variables: list[Local] = []
self.defined: set[str] = set()
+ self.extract_bits = extract_bits
- def pop(self, var: StackItem, extract_bits: bool = True) -> tuple[str,
Local]:
+ def pop(self, var: StackItem) -> tuple[str, Local]:
self.top_offset.pop(var)
indirect = "&" if var.is_array() else ""
if self.variables:
@@ -272,7 +273,7 @@ def pop(self, var: StackItem, extract_bits: bool = True) ->
tuple[str, Local]:
return "", Local.unused(var)
self.defined.add(var.name)
cast = f"({var.type})" if (not indirect and var.type) else ""
- bits = ".bits" if cast and extract_bits else ""
+ bits = ".bits" if cast and self.extract_bits else ""
assign = f"{var.name} =
{cast}{indirect}stack_pointer[{self.base_offset.to_c()}]{bits};"
if var.condition:
if var.condition == "1":
@@ -315,7 +316,7 @@ def _adjust_stack_pointer(self, out: CWriter, number: str)
-> None:
out.emit("assert(WITHIN_STACK_BOUNDS());\n")
def flush(
- self, out: CWriter, cast_type: str = "uintptr_t", extract_bits: bool =
True
+ self, out: CWriter, cast_type: str = "uintptr_t"
) -> None:
out.start_line()
var_offset = self.base_offset.copy()
@@ -324,7 +325,7 @@ def flush(
var.defined and
not var.in_memory
):
- Stack._do_emit(out, var.item, var_offset, cast_type,
extract_bits)
+ Stack._do_emit(out, var.item, var_offset, cast_type,
self.extract_bits)
var.in_memory = True
var_offset.push(var.item)
number = self.top_offset.to_c()
@@ -346,7 +347,7 @@ def as_comment(self) -> str:
)
def copy(self) -> "Stack":
- other = Stack()
+ other = Stack(self.extract_bits)
other.top_offset = self.top_offset.copy()
other.base_offset = self.base_offset.copy()
other.variables = [var.copy() for var in self.variables]
@@ -507,10 +508,10 @@ def locals_cached(self) -> bool:
return True
return False
- def flush(self, out: CWriter, cast_type: str = "uintptr_t", extract_bits:
bool = True) -> None:
+ def flush(self, out: CWriter, cast_type: str = "uintptr_t") -> None:
self.clear_dead_inputs()
self._push_defined_outputs()
- self.stack.flush(out, cast_type, extract_bits)
+ self.stack.flush(out, cast_type)
def save(self, out: CWriter) -> None:
assert self.spilled >= 0
@@ -530,12 +531,12 @@ def reload(self, out: CWriter) -> None:
out.emit("stack_pointer = _PyFrame_GetStackPointer(frame);\n")
@staticmethod
- def for_uop(stack: Stack, uop: Uop, extract_bits: bool = True) ->
tuple[list[str], "Storage"]:
+ def for_uop(stack: Stack, uop: Uop) -> tuple[list[str], "Storage"]:
code_list: list[str] = []
inputs: list[Local] = []
peeks: list[Local] = []
for input in reversed(uop.stack.inputs):
- code, local = stack.pop(input, extract_bits)
+ code, local = stack.pop(input)
code_list.append(code)
if input.peek:
peeks.append(local)
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