[pypy-svn] r68107 - in pypy/trunk/pypy/jit/backend/cli: . test

antocuni at codespeak.net antocuni at codespeak.net
Thu Oct 1 16:30:45 CEST 2009


Author: antocuni
Date: Thu Oct  1 16:30:44 2009
New Revision: 68107

Modified:
   pypy/trunk/pypy/jit/backend/cli/method.py
   pypy/trunk/pypy/jit/backend/cli/runner.py
   pypy/trunk/pypy/jit/backend/cli/test/test_basic.py
   pypy/trunk/pypy/jit/backend/cli/test/test_runner.py
Log:
refactor the cli jit backend after the merging of the remove-plfbid,
remove-fail and kill-jumptarget branches.  The main idea is that so far the
cli backend recompiles the whole loop each time we add a path for a failing
guard, and since the frontend no longer keeps the tree in memory, we have to
keep it in the backend itself



Modified: pypy/trunk/pypy/jit/backend/cli/method.py
==============================================================================
--- pypy/trunk/pypy/jit/backend/cli/method.py	(original)
+++ pypy/trunk/pypy/jit/backend/cli/method.py	Thu Oct  1 16:30:44 2009
@@ -7,7 +7,7 @@
 from pypy.translator.cli import opcodes
 from pypy.jit.metainterp import history
 from pypy.jit.metainterp.history import (AbstractValue, Const, ConstInt,
-                                         ConstObj, BoxInt)
+                                         ConstObj, BoxInt, LoopToken)
 from pypy.jit.metainterp.resoperation import rop, opname
 from pypy.jit.metainterp.typesystem import oohelper
 from pypy.jit.backend.cli import runner
@@ -23,7 +23,6 @@
 
 cVoid = ootype.nullruntimeclass
 
-
 class __extend__(AbstractValue):
     __metaclass__ = extendabletype
 
@@ -127,11 +126,11 @@
     tailcall = True
     nocast = True
 
-    def __init__(self, cpu, name, loop):
+    def __init__(self, cpu, cliloop):
         self.setoptions()
         self.cpu = cpu
-        self.name = name
-        self.loop = loop
+        self.name = cliloop.get_fresh_cli_name()
+        self.cliloop = cliloop
         self.boxes = {}       # box --> local var
         self.branches = []
         self.branchlabels = []
@@ -149,18 +148,19 @@
         else:
             self.av_OverflowError = None
             self.av_ZeroDivisionError = None
+        self.box2type = {}
 
+    def compile(self):
         # ----
-        self.box2type = {}
         if self.nocast:
             self.compute_types()
         self.emit_load_inputargs()
         self.emit_preamble()
-        self.emit_operations(loop.operations)
+        self.emit_operations(self.cliloop.operations)
         self.emit_branches()
         self.emit_end()
         # ----
-        self.finish_code()
+        return self.finish_code()
 
     def _parseopt(self, text):
         text = text.lower()
@@ -194,12 +194,13 @@
                 descr = op.descr
                 assert isinstance(descr, runner.FieldDescr)
                 box2classes.setdefault(box, []).append(descr.selfclass)
-            if op.suboperations:
-                self._collect_types(op.suboperations, box2classes)
+            if op in self.cliloop.guard2ops:
+                _, suboperations = self.cliloop.guard2ops[op]
+                self._collect_types(suboperations, box2classes)
 
     def compute_types(self):
         box2classes = {} # box --> [ootype.Class]
-        self._collect_types(self.loop.operations, box2classes)
+        self._collect_types(self.cliloop.operations, box2classes)
         for box, classes in box2classes.iteritems():
             cls = classes[0]
             for cls2 in classes[1:]:
@@ -217,8 +218,7 @@
             consts[i] = av_const.get_cliobj()
         # build the delegate
         func = self.meth_wrapper.create_delegate(delegatetype, consts)
-        func = dotnet.clidowncast(func, LoopDelegate)
-        self.loop._cli_funcbox.holder.SetFunc(func)
+        return dotnet.clidowncast(func, LoopDelegate)
 
     def _get_meth_wrapper(self):
         restype = dotnet.class2type(cVoid)
@@ -240,6 +240,12 @@
             self.boxes[box] = v
             return v
 
+    def match_var_fox_boxes(self, failargs, inputargs):
+        assert len(failargs) == len(inputargs)
+        for i in range(len(failargs)):
+            v = self.boxes[failargs[i]]
+            self.boxes[inputargs[i]] = v
+
     def get_index_for_failing_op(self, op):
         try:
             return self.cpu.failing_ops.index(op)
@@ -292,7 +298,7 @@
     def emit_load_inputargs(self):
         self.emit_debug("executing: " + self.name)
         i = 0
-        for box in self.loop.inputargs:
+        for box in self.cliloop.inputargs:
             self.load_inputarg(i, box.type, box.getCliType(self))
             box.store(self)
             i+=1
@@ -324,7 +330,16 @@
                 op = branches[i]
                 il_label = branchlabels[i]
                 self.il.MarkLabel(il_label)
-                self.emit_operations(op.suboperations)
+                self.emit_guard_subops(op)
+
+    def emit_guard_subops(self, op):
+        assert op.is_guard()
+        if op in self.cliloop.guard2ops:
+            inputargs, suboperations = self.cliloop.guard2ops[op]
+            self.match_var_fox_boxes(op.fail_args, inputargs)
+            self.emit_operations(suboperations)
+        else:
+            self.emit_return_failed_op(op, op.fail_args)
 
     def emit_end(self):
         assert self.branches == []
@@ -396,7 +411,6 @@
         self.il.Emit(OpCodes.Leave, lbl)
         self.il.BeginCatchBlock(dotnet.typeof(System.OverflowException))
         # emit the guard
-        assert opguard.suboperations
         assert len(opguard.args) == 0
         il_label = self.newbranch(opguard)
         self.il.Emit(OpCodes.Leave, il_label)
@@ -408,25 +422,27 @@
 
     # --------------------------------
 
-    def emit_op_fail(self, op):
+    def emit_return_failed_op(self, op, args):
         # store the index of the failed op
         index_op = self.get_index_for_failing_op(op)
         self.av_inputargs.load(self)
         self.il.Emit(OpCodes.Ldc_I4, index_op)
         field = dotnet.typeof(InputArgs).GetField('failed_op')
         self.il.Emit(OpCodes.Stfld, field)
-        self.emit_store_opargs(op)
+        self.emit_store_opargs(args)
         self.il.Emit(OpCodes.Ret)
 
-    def emit_store_opargs(self, op):
+    def emit_op_finish(self, op):
+        self.emit_return_failed_op(op, op.args)
+
+    def emit_store_opargs(self, args):
         # store the latest values
         i = 0
-        for box in op.args:
+        for box in args:
             self.store_inputarg(i, box.type, box.getCliType(self), box)
             i+=1
 
     def emit_guard_bool(self, op, opcode):
-        assert op.suboperations
         assert len(op.args) == 1
         il_label = self.newbranch(op)
         op.args[0].load(self)
@@ -439,14 +455,12 @@
         self.emit_guard_bool(op, OpCodes.Brtrue)
 
     def emit_op_guard_value(self, op):
-        assert op.suboperations
         assert len(op.args) == 2
         il_label = self.newbranch(op)
         self.push_all_args(op)
         self.il.Emit(OpCodes.Bne_Un, il_label)
 
     def emit_op_guard_class(self, op):
-        assert op.suboperations
         assert len(op.args) == 2
         il_label = self.newbranch(op)
         self.push_arg(op, 0)
@@ -456,14 +470,12 @@
         self.il.Emit(OpCodes.Bne_Un, il_label)
 
     def emit_op_guard_no_exception(self, op):
-        assert op.suboperations
         il_label = self.newbranch(op)
         self.av_inputargs.load(self)
         self.il.Emit(OpCodes.Ldfld, self.exc_value_field)
         self.il.Emit(OpCodes.Brtrue, il_label)
 
     def emit_op_guard_exception(self, op):
-        assert op.suboperations
         il_label = self.newbranch(op)
         classbox = op.args[0]
         assert isinstance(classbox, ConstObj)
@@ -479,7 +491,6 @@
         self.store_result(op)
 
     def emit_guard_overflow_impl(self, op, opcode):
-        assert op.suboperations
         assert len(op.args) == 0
         il_label = self.newbranch(op)
         self.av_ovf_flag.load(self)
@@ -492,19 +503,22 @@
         self.emit_guard_overflow_impl(op, OpCodes.Brfalse)
 
     def emit_op_jump(self, op):
-        target = op.jump_target
-        assert len(op.args) == len(target.inputargs)
-        if target is self.loop:
+        target_token = op.descr
+        assert isinstance(target_token, LoopToken)
+        if target_token.cliloop is self.cliloop:
+            # jump to the beginning of the loop
             i = 0
             for i in range(len(op.args)):
                 op.args[i].load(self)
-                target.inputargs[i].store(self)
+                self.cliloop.inputargs[i].store(self)
             self.il.Emit(OpCodes.Br, self.il_loop_start)
         else:
             # it's a real bridge
-            self.emit_debug('jumping to ' + target.name)
-            self.emit_store_opargs(op)
-            target._cli_funcbox.load(self)
+            cliloop = target_token.cliloop
+            assert len(op.args) == len(cliloop.inputargs)
+            self.emit_debug('jumping to ' + cliloop.name)
+            self.emit_store_opargs(op.args)
+            cliloop.funcbox.load(self)
             self.av_inputargs.load(self)
             methinfo = dotnet.typeof(LoopDelegate).GetMethod('Invoke')
             if self.tailcall:

Modified: pypy/trunk/pypy/jit/backend/cli/runner.py
==============================================================================
--- pypy/trunk/pypy/jit/backend/cli/runner.py	(original)
+++ pypy/trunk/pypy/jit/backend/cli/runner.py	Thu Oct  1 16:30:44 2009
@@ -3,8 +3,8 @@
 from pypy.rlib.objectmodel import we_are_translated
 from pypy.jit.metainterp import history
 from pypy.jit.metainterp.history import AbstractDescr, AbstractMethDescr
+from pypy.jit.metainterp.history import AbstractFailDescr, LoopToken
 from pypy.jit.metainterp.history import Box, BoxInt, BoxObj, ConstObj, Const
-from pypy.jit.metainterp.history import TreeLoop
 from pypy.jit.metainterp import executor
 from pypy.jit.metainterp.resoperation import rop, opname
 from pypy.jit.backend import model
@@ -18,15 +18,24 @@
 InputArgs = CLR.pypy.runtime.InputArgs
 cpypyString = dotnet.classof(CLR.pypy.runtime.String)
 
-class __extend__(TreeLoop):
-    __metaclass__ = extendabletype
+LoopToken.cliloop = None
+AbstractFailDescr._loop_token = None
+AbstractFailDescr._guard_op = None
 
-    _cli_funcbox = None
-    _cli_meth = None
-    _cli_count = 0
-
-    def _get_cli_name(self):
-        return '%s(r%d)' % (self.name, self._cli_count)
+class CliLoop(object):
+    
+    def __init__(self, name, inputargs, operations):
+        self.name = name
+        self.inputargs = inputargs
+        self.operations = operations
+        self.guard2ops = {}  # guard_op --> (inputargs, operations)
+        self.funcbox = None
+        self.methcount = 0
+
+    def get_fresh_cli_name(self):
+        name = '%s(r%d)' % (self.name, self.methcount)
+        self.methcount += 1
+        return name
 
 
 class CliCPU(model.AbstractCPU):
@@ -38,6 +47,7 @@
         self.rtyper = rtyper
         if rtyper:
             assert rtyper.type_system.name == "ootypesystem"
+        self.loopcount = 0
         self.stats = stats
         self.translate_support_code = translate_support_code
         self.inputargs = None
@@ -90,21 +100,42 @@
 
     # ----------------------
 
-    def compile_operations(self, loop, bridge=None):
-        from pypy.jit.backend.cli.method import Method, ConstFunction
-        if loop._cli_funcbox is None:
-            loop._cli_funcbox = ConstFunction(loop.name)
-        else:
-            # discard previously compiled loop
-            loop._cli_funcbox.holder.SetFunc(None)
-        loop._cli_meth = Method(self, loop._get_cli_name(), loop)
-        loop._cli_count += 1
+    def _attach_token_to_faildescrs(self, token, operations):
+        for op in operations:
+            if op.is_guard():
+                descr = op.descr
+                assert isinstance(descr, AbstractFailDescr)
+                descr._loop_token = token
+                descr._guard_op = op
 
-    def execute_operations(self, loop):
-        func = loop._cli_funcbox.holder.GetFunc()
+    def compile_loop(self, inputargs, operations, looptoken):
+        from pypy.jit.backend.cli.method import Method, ConstFunction
+        name = 'Loop%d' % self.loopcount
+        self.loopcount += 1
+        cliloop = CliLoop(name, inputargs, operations)
+        looptoken.cliloop = cliloop
+        cliloop.funcbox = ConstFunction(cliloop.name)
+        self._attach_token_to_faildescrs(cliloop, operations)
+        meth = Method(self, cliloop)
+        cliloop.funcbox.holder.SetFunc(meth.compile())
+
+    def compile_bridge(self, faildescr, inputargs, operations):
+        from pypy.jit.backend.cli.method import Method
+        op = faildescr._guard_op
+        token = faildescr._loop_token
+        token.guard2ops[op] = (inputargs, operations)
+        self._attach_token_to_faildescrs(token, operations)
+        meth = Method(self, token)
+        token.funcbox.holder.SetFunc(meth.compile())
+        return token
+
+    def execute_token(self, looptoken):
+        cliloop = looptoken.cliloop
+        func = cliloop.funcbox.holder.GetFunc()
         func(self.get_inputargs())
-        return self.failing_ops[self.inputargs.get_failed_op()]
-
+        op = self.failing_ops[self.inputargs.get_failed_op()]
+        return op.descr
+        
     def set_future_value_int(self, index, intvalue):
         self.get_inputargs().set_int(index, intvalue)
 
@@ -180,10 +211,12 @@
 
     def do_getfield_gc(self, instancebox, fielddescr):
         assert isinstance(fielddescr, FieldDescr)
+        assert fielddescr.getfield is not None
         return fielddescr.getfield(instancebox)
 
     def do_setfield_gc(self, instancebox, newvaluebox, fielddescr):
         assert isinstance(fielddescr, FieldDescr)
+        assert fielddescr.setfield is not None
         return fielddescr.setfield(instancebox, newvaluebox)
 
     def do_call(self, args, calldescr):
@@ -205,6 +238,7 @@
 
     def do_oosend(self, args, descr):
         assert isinstance(descr, MethDescr)
+        assert descr.callmeth is not None
         selfbox = args[0]
         argboxes = args[1:]
         return descr.callmeth(selfbox, argboxes)
@@ -428,6 +462,7 @@
     setfield = None
     selfclass = ootype.nullruntimeclass
     fieldname = ''
+    _is_pointer_field = False
 
     def __init__(self, TYPE, fieldname):
         DescrWithKey.__init__(self, (TYPE, fieldname))

Modified: pypy/trunk/pypy/jit/backend/cli/test/test_basic.py
==============================================================================
--- pypy/trunk/pypy/jit/backend/cli/test/test_basic.py	(original)
+++ pypy/trunk/pypy/jit/backend/cli/test/test_basic.py	Thu Oct  1 16:30:44 2009
@@ -43,6 +43,10 @@
     test_subclassof = skip
     test_assert_isinstance = skip
     test_dont_look_inside = skip
+    test_setfield_bool = skip
+    test_instantiate_does_not_call = skip
+    test_listcomp = skip
+    test_tuple_immutable = skip
 
 
 def test_fielddescr_ootype():

Modified: pypy/trunk/pypy/jit/backend/cli/test/test_runner.py
==============================================================================
--- pypy/trunk/pypy/jit/backend/cli/test/test_runner.py	(original)
+++ pypy/trunk/pypy/jit/backend/cli/test/test_runner.py	Thu Oct  1 16:30:44 2009
@@ -13,7 +13,7 @@
     CPUClass = CliCPU
 
     # for the individual tests see
-    # ====> ../../test/runner.py
+    # ====> ../../test/runner_test.py
     
     def setup_class(cls):
         cls.cpu = cls.CPUClass(rtyper=None, stats=FakeStats())
@@ -33,9 +33,15 @@
     def test_ovf_operations(self, reversed=False):
         self.skip()
 
+    def test_do_unicode_basic(self):
+        py.test.skip('fixme!')
+
     def test_unicode_basic(self):
         py.test.skip('fixme!')
 
+    def test_backends_dont_keep_loops_alive(self):
+        pass # the cli backend DOES keep loops alive
+
 def test_pypycliopt():
     import os
     from pypy.jit.backend.cli.method import Method



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