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from rpython.jit.metainterp.optimizeopt.optimizer import Optimization
from rpython.jit.metainterp.optimizeopt.util import make_dispatcher_method
from rpython.jit.metainterp.resoperation import ResOperation, rop, OpHelpers
from rpython.jit.metainterp.history import TargetToken, JitCellToken
class OptSimplify(Optimization):
def __init__(self, unroll):
self.last_label_descr = None
self.unroll = unroll
def emit(self, op):
if op.is_guard():
if self.optimizer.pendingfields is None:
self.optimizer.pendingfields = []
return Optimization.emit(self, op)
def optimize_CALL_PURE_I(self, op):
opnum = OpHelpers.call_for_descr(op.getdescr())
newop = self.optimizer.replace_op_with(op, opnum)
return self.emit(newop)
optimize_CALL_PURE_R = optimize_CALL_PURE_I
optimize_CALL_PURE_F = optimize_CALL_PURE_I
optimize_CALL_PURE_N = optimize_CALL_PURE_I
def optimize_CALL_LOOPINVARIANT_I(self, op):
opnum = OpHelpers.call_for_descr(op.getdescr())
op = op.copy_and_change(opnum)
return self.emit(op)
optimize_CALL_LOOPINVARIANT_R = optimize_CALL_LOOPINVARIANT_I
optimize_CALL_LOOPINVARIANT_F = optimize_CALL_LOOPINVARIANT_I
optimize_CALL_LOOPINVARIANT_N = optimize_CALL_LOOPINVARIANT_I
def optimize_VIRTUAL_REF_FINISH(self, op):
pass
def optimize_VIRTUAL_REF(self, op):
newop = self.replace_op_with(op, rop.SAME_AS_R, [op.getarg(0)])
return self.emit(newop)
def optimize_QUASIIMMUT_FIELD(self, op):
# xxx ideally we could also kill the following GUARD_NOT_INVALIDATED
# but it's a bit hard to implement robustly if heap.py is also run
pass
def optimize_ASSERT_NOT_NONE(self, op):
pass
def optimize_RECORD_EXACT_CLASS(self, op):
pass
# def optimize_LABEL(self, op):
# if not self.unroll:
# descr = op.getdescr()
# if isinstance(descr, JitCellToken):
# return self.optimize_JUMP(op.copy_and_change(rop.JUMP))
# self.last_label_descr = op.getdescr()
# return self.emit(op)
# def optimize_JUMP(self, op):
# if not self.unroll:
# op = op.copy_and_change(op.getopnum())
# descr = op.getdescr()
# assert isinstance(descr, JitCellToken)
# if not descr.target_tokens:
# assert self.last_label_descr is not None
# target_token = self.last_label_descr
# assert isinstance(target_token, TargetToken)
# assert target_token.targeting_jitcell_token is descr
# op.setdescr(self.last_label_descr)
# else:
# assert len(descr.target_tokens) == 1
# op.setdescr(descr.target_tokens[0])
# return self.emit(op)
def optimize_GUARD_FUTURE_CONDITION(self, op):
self.optimizer.notice_guard_future_condition(op)
dispatch_opt = make_dispatcher_method(OptSimplify, 'optimize_',
default=OptSimplify.emit)
OptSimplify.propagate_forward = dispatch_opt
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