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Revert "GH-128914: Remove conditional stack effects from bytecodes.c and the code generators (GH-128918)" (GH-129202)

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The commit introduced a ~2.5-3% regression in the free threading build.

This reverts commit ab61d3f430.
This commit is contained in:
Sam Gross 2025-01-23 04:26:25 -05:00 • committed by GitHub
parent d7d066c3ab
commit a10f99375e
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GPG key ID: B5690EEEBB952194
44 changed files with 1679 additions and 1460 deletions
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10
Tools/cases_generator/optimizer_generator.py
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@ -48,13 +48,19 @@ def declare_variables(uop: Uop, out: CWriter, skip_inputs: bool) -> None:
for var in reversed(uop.stack.inputs):
if var.used and var.name not in variables:
variables.add(var.name)
out.emit(f"{type_name(var)}{var.name};\n")
if var.condition:
out.emit(f"{type_name(var)}{var.name} = NULL;\n")
else:
out.emit(f"{type_name(var)}{var.name};\n")
for var in uop.stack.outputs:
if var.peek:
continue
if var.name not in variables:
variables.add(var.name)
out.emit(f"{type_name(var)}{var.name};\n")
if var.condition:
out.emit(f"{type_name(var)}{var.name} = NULL;\n")
else:
out.emit(f"{type_name(var)}{var.name};\n")
def decref_inputs(