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GH-116422: Tier2 hot/cold splitting (GH-116813)

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Splits the "cold" path, deopts and exits, from the "hot" path, reducing the size of most jitted instructions, at the cost of slower exits.
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Mark Shannon 2024-03-26 09:35:11 +00:00 • committed by GitHub
parent 61599a48f5
commit bf82f77957
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21 changed files with 1662 additions and 1003 deletions
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6
Tools/jit/_stencils.py
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@ -31,6 +31,12 @@ class HoleValue(enum.Enum):
OPERAND = enum.auto()
# The current uop's target (exposed as _JIT_TARGET):
TARGET = enum.auto()
# The base address of the machine code for the jump target (exposed as _JIT_JUMP_TARGET):
JUMP_TARGET = enum.auto()
# The base address of the machine code for the error jump target (exposed as _JIT_ERROR_TARGET):
ERROR_TARGET = enum.auto()
# The index of the exit to be jumped through (exposed as _JIT_EXIT_INDEX):
EXIT_INDEX = enum.auto()
# The base address of the machine code for the first uop (exposed as _JIT_TOP):
TOP = enum.auto()
# A hardcoded value of zero (used for symbol lookups):