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gh-106581: Project through calls (#108067)

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This finishes the work begun in gh-107760. When, while projecting a superblock, we encounter a call to a short, simple function, the superblock will now enter the function using `_PUSH_FRAME`, continue through it, and leave it using `_POP_FRAME`, and then continue through the original code. Multiple frame pushes and pops are even possible. It is also possible to stop appending to the superblock in the middle of a called function, when running out of space or encountering an unsupported bytecode.
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Guido van Rossum 2023-08-17 11:29:58 -07:00 • committed by GitHub
parent 292a22bdc2
commit 61c7249759
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16 changed files with 409 additions and 109 deletions
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6
Tools/cases_generator/analysis.py
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@ -364,10 +364,12 @@ def analyze_macro(self, macro: parsing.Macro) -> MacroInstruction:
case Instruction() as instr:
part, offset = self.analyze_instruction(instr, offset)
parts.append(part)
flags.add(instr.instr_flags)
if instr.name != "SAVE_IP":
# SAVE_IP in a macro is a no-op in Tier 1
flags.add(instr.instr_flags)
case _:
typing.assert_never(component)
format = "IB"
format = "IB" if flags.HAS_ARG_FLAG else "IX"
if offset:
format += "C" + "0" * (offset - 1)
return MacroInstruction(macro.name, format, flags, macro, parts, offset)