IEMAllN8vePython.py@ 103773

Last change on this file since 103773 was 103768, checked in by vboxsync, 9 months ago
VMM/IEM: Some more threaded function name annotating to make the native recompilation state more visible in the statistics. bugref:10376
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1	#!/usr/bin/env python
2	# -- coding: utf-8 --
3	# $Id: IEMAllN8vePython.py 103768 2024-03-11 14:39:16Z vboxsync $
4	# pylint: disable=invalid-name
5
6	"""
7	Native recompiler side-kick for IEMAllThrdPython.py.
8
9	Analyzes the each threaded function variant to see if we can we're able to
10	recompile it, then provides modifies MC block code for doing so.
11	"""
12
13	from __future__ import print_function;
14
15	__copyright__ = \
16	"""
17	Copyright (C) 2023 Oracle and/or its affiliates.
18
19	This file is part of VirtualBox base platform packages, as
20	available from https://www.virtualbox.org.
21
22	This program is free software; you can redistribute it and/or
23	modify it under the terms of the GNU General Public License
24	as published by the Free Software Foundation, in version 3 of the
25	License.
26
27	This program is distributed in the hope that it will be useful, but
28	WITHOUT ANY WARRANTY; without even the implied warranty of
29	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
30	General Public License for more details.
31
32	You should have received a copy of the GNU General Public License
33	along with this program; if not, see <https://www.gnu.org/licenses>.
34
35	SPDX-License-Identifier: GPL-3.0-only
36	"""
37	__version__ = "$Revision: 103768 $"
38
39	# Standard python imports:
40	import copy;
41	import sys;
42
43	# Out python imports:
44	import IEMAllInstPython as iai;
45
46
47	## Supplememnts g_dMcStmtParsers.
48	g_dMcStmtThreaded = {
49	'IEM_MC_DEFER_TO_CIMPL_0_RET_THREADED': (None, True, True, True, ),
50	'IEM_MC_DEFER_TO_CIMPL_1_RET_THREADED': (None, True, True, True, ),
51	'IEM_MC_DEFER_TO_CIMPL_2_RET_THREADED': (None, True, True, True, ),
52	'IEM_MC_DEFER_TO_CIMPL_3_RET_THREADED': (None, True, True, True, ),
53
54	'IEM_MC_ADVANCE_RIP_AND_FINISH_THREADED_PC16': (None, True, True, True, ),
55	'IEM_MC_ADVANCE_RIP_AND_FINISH_THREADED_PC32': (None, True, True, True, ),
56	'IEM_MC_ADVANCE_RIP_AND_FINISH_THREADED_PC64': (None, True, True, True, ),
57
58	'IEM_MC_ADVANCE_RIP_AND_FINISH_THREADED_PC16_WITH_FLAGS': (None, True, True, True, ),
59	'IEM_MC_ADVANCE_RIP_AND_FINISH_THREADED_PC32_WITH_FLAGS': (None, True, True, True, ),
60	'IEM_MC_ADVANCE_RIP_AND_FINISH_THREADED_PC64_WITH_FLAGS': (None, True, True, True, ),
61
62	'IEM_MC_REL_JMP_S8_AND_FINISH_THREADED_PC16': (None, True, True, True, ),
63	'IEM_MC_REL_JMP_S8_AND_FINISH_THREADED_PC32': (None, True, True, True, ),
64	'IEM_MC_REL_JMP_S8_AND_FINISH_THREADED_PC64': (None, True, True, True, ),
65	'IEM_MC_REL_JMP_S16_AND_FINISH_THREADED_PC16': (None, True, True, True, ),
66	'IEM_MC_REL_JMP_S16_AND_FINISH_THREADED_PC32': (None, True, True, True, ),
67	'IEM_MC_REL_JMP_S16_AND_FINISH_THREADED_PC64': (None, True, True, True, ),
68	'IEM_MC_REL_JMP_S32_AND_FINISH_THREADED_PC32': (None, True, True, True, ),
69	'IEM_MC_REL_JMP_S32_AND_FINISH_THREADED_PC64': (None, True, True, True, ),
70
71	'IEM_MC_REL_JMP_S8_AND_FINISH_THREADED_PC16_WITH_FLAGS': (None, True, True, True, ),
72	'IEM_MC_REL_JMP_S8_AND_FINISH_THREADED_PC32_WITH_FLAGS': (None, True, True, True, ),
73	'IEM_MC_REL_JMP_S8_AND_FINISH_THREADED_PC64_WITH_FLAGS': (None, True, True, True, ),
74	'IEM_MC_REL_JMP_S16_AND_FINISH_THREADED_PC16_WITH_FLAGS': (None, True, True, True, ),
75	'IEM_MC_REL_JMP_S16_AND_FINISH_THREADED_PC32_WITH_FLAGS': (None, True, True, True, ),
76	'IEM_MC_REL_JMP_S16_AND_FINISH_THREADED_PC64_WITH_FLAGS': (None, True, True, True, ),
77	'IEM_MC_REL_JMP_S32_AND_FINISH_THREADED_PC32_WITH_FLAGS': (None, True, True, True, ),
78	'IEM_MC_REL_JMP_S32_AND_FINISH_THREADED_PC64_WITH_FLAGS': (None, True, True, True, ),
79
80	'IEM_MC_SET_RIP_U16_AND_FINISH_THREADED_PC16': (None, True, True, True, ),
81	'IEM_MC_SET_RIP_U16_AND_FINISH_THREADED_PC32': (None, True, True, True, ),
82	'IEM_MC_SET_RIP_U16_AND_FINISH_THREADED_PC64': (None, True, True, True, ),
83	'IEM_MC_SET_RIP_U32_AND_FINISH_THREADED_PC16': (None, True, True, True, ),
84	'IEM_MC_SET_RIP_U32_AND_FINISH_THREADED_PC32': (None, True, True, True, ),
85	'IEM_MC_SET_RIP_U32_AND_FINISH_THREADED_PC64': (None, True, True, True, ),
86	'IEM_MC_SET_RIP_U64_AND_FINISH_THREADED_PC32': (None, True, True, True, ),
87	'IEM_MC_SET_RIP_U64_AND_FINISH_THREADED_PC64': (None, True, True, True, ),
88
89	'IEM_MC_SET_RIP_U16_AND_FINISH_THREADED_PC16_WITH_FLAGS': (None, True, True, True, ),
90	'IEM_MC_SET_RIP_U16_AND_FINISH_THREADED_PC32_WITH_FLAGS': (None, True, True, True, ),
91	'IEM_MC_SET_RIP_U16_AND_FINISH_THREADED_PC64_WITH_FLAGS': (None, True, True, True, ),
92	'IEM_MC_SET_RIP_U32_AND_FINISH_THREADED_PC16_WITH_FLAGS': (None, True, True, True, ),
93	'IEM_MC_SET_RIP_U32_AND_FINISH_THREADED_PC32_WITH_FLAGS': (None, True, True, True, ),
94	'IEM_MC_SET_RIP_U32_AND_FINISH_THREADED_PC64_WITH_FLAGS': (None, True, True, True, ),
95	'IEM_MC_SET_RIP_U64_AND_FINISH_THREADED_PC32_WITH_FLAGS': (None, True, True, True, ),
96	'IEM_MC_SET_RIP_U64_AND_FINISH_THREADED_PC64_WITH_FLAGS': (None, True, True, True, ),
97
98	'IEM_MC_CALC_RM_EFF_ADDR_THREADED_16': (None, False, False, True, ),
99	'IEM_MC_CALC_RM_EFF_ADDR_THREADED_32': (None, False, False, True, ),
100	'IEM_MC_CALC_RM_EFF_ADDR_THREADED_64_ADDR32': (None, False, False, True, ),
101	'IEM_MC_CALC_RM_EFF_ADDR_THREADED_64_FSGS': (None, False, False, True, ),
102	'IEM_MC_CALC_RM_EFF_ADDR_THREADED_64': (None, False, False, True, ),
103
104	'IEM_MC_CALL_CIMPL_1_THREADED': (None, True, True, True, ),
105	'IEM_MC_CALL_CIMPL_2_THREADED': (None, True, True, True, ),
106	'IEM_MC_CALL_CIMPL_3_THREADED': (None, True, True, True, ),
107	'IEM_MC_CALL_CIMPL_4_THREADED': (None, True, True, True, ),
108	'IEM_MC_CALL_CIMPL_5_THREADED': (None, True, True, True, ),
109
110	'IEM_MC_STORE_GREG_U8_THREADED': (None, True, True, True, ),
111	'IEM_MC_STORE_GREG_U8_CONST_THREADED': (None, True, True, True, ),
112	'IEM_MC_FETCH_GREG_U8_THREADED': (None, False, False, True, ),
113	'IEM_MC_FETCH_GREG_U8_SX_U16_THREADED': (None, False, False, True, ),
114	'IEM_MC_FETCH_GREG_U8_SX_U32_THREADED': (None, False, False, True, ),
115	'IEM_MC_FETCH_GREG_U8_SX_U64_THREADED': (None, False, False, True, ),
116	'IEM_MC_FETCH_GREG_U8_ZX_U16_THREADED': (None, False, False, True, ),
117	'IEM_MC_FETCH_GREG_U8_ZX_U32_THREADED': (None, False, False, True, ),
118	'IEM_MC_FETCH_GREG_U8_ZX_U64_THREADED': (None, False, False, True, ),
119	'IEM_MC_REF_GREG_U8_THREADED': (None, True, True, True, ),
120	'IEM_MC_REF_GREG_U8_CONST_THREADED': (None, True, True, True, ),
121
122	'IEM_MC_REF_EFLAGS_EX': (None, False, False, True, ),
123	'IEM_MC_COMMIT_EFLAGS_EX': (None, True, True, True, ),
124	'IEM_MC_FETCH_EFLAGS_EX': (None, False, False, True, ),
125	'IEM_MC_ASSERT_EFLAGS': (None, True, True, True, ),
126
127	# Flat Mem:
128	'IEM_MC_FETCH_MEM16_FLAT_U8': (None, True, True, False, ),
129	'IEM_MC_FETCH_MEM32_FLAT_U8': (None, True, True, False, ),
130	'IEM_MC_FETCH_MEM_FLAT_D80': (None, True, True, False, ),
131	'IEM_MC_FETCH_MEM_FLAT_I16': (None, True, True, False, ),
132	'IEM_MC_FETCH_MEM_FLAT_I32': (None, True, True, False, ),
133	'IEM_MC_FETCH_MEM_FLAT_I64': (None, True, True, False, ),
134	'IEM_MC_FETCH_MEM_FLAT_R32': (None, True, True, False, ),
135	'IEM_MC_FETCH_MEM_FLAT_R64': (None, True, True, False, ),
136	'IEM_MC_FETCH_MEM_FLAT_R80': (None, True, True, False, ),
137	'IEM_MC_FETCH_MEM_FLAT_U128_ALIGN_SSE': (None, True, True, False, ),
138	'IEM_MC_FETCH_MEM_FLAT_U128_NO_AC': (None, True, True, False, ),
139	'IEM_MC_FETCH_MEM_FLAT_U128': (None, True, True, False, ),
140	'IEM_MC_FETCH_MEM_FLAT_U16_DISP': (None, True, True, True, ),
141	'IEM_MC_FETCH_MEM_FLAT_U16_SX_U32': (None, True, True, True, ),
142	'IEM_MC_FETCH_MEM_FLAT_U16_SX_U64': (None, True, True, True, ),
143	'IEM_MC_FETCH_MEM_FLAT_U16': (None, True, True, True, ),
144	'IEM_MC_FETCH_MEM_FLAT_U16_ZX_U32': (None, True, True, True, ),
145	'IEM_MC_FETCH_MEM_FLAT_U16_ZX_U64': (None, True, True, True, ),
146	'IEM_MC_FETCH_MEM_FLAT_U256_ALIGN_AVX': (None, True, True, False, ),
147	'IEM_MC_FETCH_MEM_FLAT_U256_NO_AC': (None, True, True, False, ),
148	'IEM_MC_FETCH_MEM_FLAT_U256': (None, True, True, False, ),
149	'IEM_MC_FETCH_MEM_FLAT_U32': (None, True, True, True, ),
150	'IEM_MC_FETCH_MEM_FLAT_U32_DISP': (None, True, True, True, ),
151	'IEM_MC_FETCH_MEM_FLAT_U32_SX_U64': (None, True, True, True, ),
152	'IEM_MC_FETCH_MEM_FLAT_U32_ZX_U64': (None, True, True, True, ),
153	'IEM_MC_FETCH_MEM_FLAT_U64': (None, True, True, True, ),
154	'IEM_MC_FETCH_MEM_FLAT_U8_SX_U16': (None, True, True, True, ),
155	'IEM_MC_FETCH_MEM_FLAT_U8_SX_U32': (None, True, True, True, ),
156	'IEM_MC_FETCH_MEM_FLAT_U8_SX_U64': (None, True, True, True, ),
157	'IEM_MC_FETCH_MEM_FLAT_U8': (None, True, True, True, ),
158	'IEM_MC_FETCH_MEM_FLAT_U8_ZX_U16': (None, True, True, True, ),
159	'IEM_MC_FETCH_MEM_FLAT_U8_ZX_U32': (None, True, True, True, ),
160	'IEM_MC_FETCH_MEM_FLAT_U8_ZX_U64': (None, True, True, True, ),
161	'IEM_MC_FETCH_MEM_FLAT_XMM_ALIGN_SSE': (None, True, True, False, ),
162	'IEM_MC_FETCH_MEM_FLAT_XMM_U32': (None, True, True, False, ),
163	'IEM_MC_FETCH_MEM_FLAT_XMM_U64': (None, True, True, False, ),
164	'IEM_MC_FETCH_MEM_FLAT_U128_AND_XREG_U128': (None, True, True, False, ),
165	'IEM_MC_FETCH_MEM_FLAT_XMM_ALIGN_SSE_AND_XREG_XMM': (None, True, True, False, ),
166	'IEM_MC_FETCH_MEM_FLAT_XMM_U32_AND_XREG_XMM': (None, True, True, False, ),
167	'IEM_MC_FETCH_MEM_FLAT_XMM_U64_AND_XREG_XMM': (None, True, True, False, ),
168	'IEM_MC_FETCH_MEM_FLAT_U128_AND_XREG_U128_AND_RAX_RDX_U64': (None, True, True, False, ),
169	'IEM_MC_FETCH_MEM_FLAT_U128_AND_XREG_U128_AND_EAX_EDX_U32_SX_U64': (None, True, True, False, ),
170	'IEM_MC_MEM_FLAT_MAP_D80_WO': (None, True, True, True, ),
171	'IEM_MC_MEM_FLAT_MAP_I16_WO': (None, True, True, True, ),
172	'IEM_MC_MEM_FLAT_MAP_I32_WO': (None, True, True, True, ),
173	'IEM_MC_MEM_FLAT_MAP_I64_WO': (None, True, True, True, ),
174	'IEM_MC_MEM_FLAT_MAP_R32_WO': (None, True, True, True, ),
175	'IEM_MC_MEM_FLAT_MAP_R64_WO': (None, True, True, True, ),
176	'IEM_MC_MEM_FLAT_MAP_R80_WO': (None, True, True, True, ),
177	'IEM_MC_MEM_FLAT_MAP_U8_ATOMIC': (None, True, True, True, ),
178	'IEM_MC_MEM_FLAT_MAP_U8_RO': (None, True, True, True, ),
179	'IEM_MC_MEM_FLAT_MAP_U8_RW': (None, True, True, True, ),
180	'IEM_MC_MEM_FLAT_MAP_U16_ATOMIC': (None, True, True, True, ),
181	'IEM_MC_MEM_FLAT_MAP_U16_RO': (None, True, True, True, ),
182	'IEM_MC_MEM_FLAT_MAP_U16_RW': (None, True, True, True, ),
183	'IEM_MC_MEM_FLAT_MAP_U32_ATOMIC': (None, True, True, True, ),
184	'IEM_MC_MEM_FLAT_MAP_U32_RO': (None, True, True, True, ),
185	'IEM_MC_MEM_FLAT_MAP_U32_RW': (None, True, True, True, ),
186	'IEM_MC_MEM_FLAT_MAP_U64_ATOMIC': (None, True, True, True, ),
187	'IEM_MC_MEM_FLAT_MAP_U64_RO': (None, True, True, True, ),
188	'IEM_MC_MEM_FLAT_MAP_U64_RW': (None, True, True, True, ),
189	'IEM_MC_MEM_FLAT_MAP_U128_ATOMIC': (None, True, True, True, ),
190	'IEM_MC_MEM_FLAT_MAP_U128_RW': (None, True, True, True, ),
191	'IEM_MC_STORE_MEM_FLAT_U128': (None, True, True, False, ),
192	'IEM_MC_STORE_MEM_FLAT_U128_NO_AC': (None, True, True, False, ),
193	'IEM_MC_STORE_MEM_FLAT_U128_ALIGN_SSE': (None, True, True, False, ),
194	'IEM_MC_STORE_MEM_FLAT_U16': (None, True, True, True, ),
195	'IEM_MC_STORE_MEM_FLAT_U16_CONST': (None, True, True, True, ),
196	'IEM_MC_STORE_MEM_FLAT_U256': (None, True, True, False, ),
197	'IEM_MC_STORE_MEM_FLAT_U256_NO_AC': (None, True, True, False, ),
198	'IEM_MC_STORE_MEM_FLAT_U256_ALIGN_AVX': (None, True, True, False, ),
199	'IEM_MC_STORE_MEM_FLAT_U32': (None, True, True, True, ),
200	'IEM_MC_STORE_MEM_FLAT_U32_CONST': (None, True, True, True, ),
201	'IEM_MC_STORE_MEM_FLAT_U64': (None, True, True, True, ),
202	'IEM_MC_STORE_MEM_FLAT_U64_CONST': (None, True, True, True, ),
203	'IEM_MC_STORE_MEM_FLAT_U8': (None, True, True, True, ),
204	'IEM_MC_STORE_MEM_FLAT_U8_CONST': (None, True, True, True, ),
205
206	# Flat Stack:
207	'IEM_MC_FLAT64_PUSH_U16': (None, True, True, True, ),
208	'IEM_MC_FLAT64_PUSH_U64': (None, True, True, True, ),
209	'IEM_MC_FLAT64_POP_GREG_U16': (None, True, True, True, ),
210	'IEM_MC_FLAT64_POP_GREG_U64': (None, True, True, True, ),
211	'IEM_MC_FLAT32_PUSH_U16': (None, True, True, True, ),
212	'IEM_MC_FLAT32_PUSH_U32': (None, True, True, True, ),
213	'IEM_MC_FLAT32_POP_GREG_U16': (None, True, True, True, ),
214	'IEM_MC_FLAT32_POP_GREG_U32': (None, True, True, True, ),
215	};
216
217	class NativeRecompFunctionVariation(object):
218	"""
219	Class that deals with transforming a threaded function variation into a
220	native recompiler function.
221
222	This base class doesn't do any transforming and just renders the same
223	code as for the threaded function.
224	"""
225
226	def __init__(self, oVariation, sHostArch):
227	self.oVariation = oVariation # type: ThreadedFunctionVariation
228	self.sHostArch = sHostArch;
229
230	def isRecompilable(self):
231	"""
232	Predicate that returns whether the variant can be recompiled natively
233	(for the selected host architecture).
234	"""
235	return True;
236
237	def raiseProblem(self, sMessage):
238	""" Raises a problem. """
239	raise Exception('%s:%s: error: %s'
240	% (self.oVariation.oParent.oMcBlock.sSrcFile, self.oVariation.oParent.oMcBlock.iBeginLine, sMessage,));
241
242	def __analyzeVariableLiveness(self, aoStmts, dVars, iDepth = 0):
243	"""
244	Performs liveness analysis of the given statement list, inserting new
245	statements to signal to the native recompiler that a variable is no
246	longer used and can be freed.
247
248	Returns list of freed variables.
249	"""
250
251	class VarInfo(object):
252	""" Variable info """
253	def __init__(self, oStmt):
254	self.oStmt = oStmt;
255	self.fIsArg = isinstance(oStmt, iai.McStmtArg);
256	self.oReferences = None # type: VarInfo
257	self.oReferencedBy = None # type: VarInfo
258
259	def isArg(self):
260	return self.fIsArg;
261
262	def makeReference(self, oLocal, oParent):
263	if not self.isArg():
264	oParent.raiseProblem('Attempt to make a reference out of an local variable: %s = &%s'
265	% (self.oStmt.sVarName, oLocal.oStmt.sVarName,));
266	if self.oReferences:
267	oParent.raiseProblem('Can only make a variable a reference once: %s = &%s; now = &%s'
268	% (self.oStmt.sVarName, self.oReferences.oStmt.sVarName, oLocal.oStmt.sVarName,));
269	if oLocal.isArg():
270	oParent.raiseProblem('Attempt to make a reference to an argument: %s = &%s'
271	% (self.oStmt.sVarName, oLocal.oStmt.sVarName,));
272	if oLocal.oReferencedBy:
273	oParent.raiseProblem('%s is already referenced by %s, so cannot make %s reference it as well'
274	% (oLocal.oStmt.sVarName, oLocal.oReferencedBy.oStmt.sVarName, self.oStmt.sVarName,));
275	self.oReferences = oLocal;
276	self.oReferences.oReferencedBy = self;
277	return True;
278
279	#
280	# Gather variable declarations and add them to dVars.
281	# Also keep a local list of them for scoping when iDepth > 0.
282	#
283	asVarsInScope = [];
284	for oStmt in aoStmts:
285	if isinstance(oStmt, iai.McStmtVar):
286	if oStmt.sVarName in dVars:
287	raise Exception('Duplicate variable: %s' % (oStmt.sVarName, ));
288
289	oInfo = VarInfo(oStmt);
290	if oInfo.isArg() and oStmt.sRefType == 'local':
291	oInfo.makeReference(dVars[oStmt.sRef], self);
292
293	dVars[oStmt.sVarName] = oInfo;
294	asVarsInScope.append(oStmt.sVarName);
295
296	#
297	# Now work the statements backwards and look for the last reference to
298	# each of the variables in dVars. We remove the variables from the
299	# collections as we go along.
300	#
301
302	def freeVariable(aoStmts, iStmt, oVarInfo, dFreedVars, dVars, fIncludeReferences = True):
303	sVarName = oVarInfo.oStmt.sVarName;
304	if not oVarInfo.isArg():
305	aoStmts.insert(iStmt + 1, iai.McStmt('IEM_MC_FREE_LOCAL', [sVarName,]));
306	assert not oVarInfo.oReferences;
307	else:
308	aoStmts.insert(iStmt + 1, iai.McStmt('IEM_MC_FREE_ARG', [sVarName,]));
309	if fIncludeReferences and oVarInfo.oReferences:
310	sRefVarName = oVarInfo.oReferences.oStmt.sVarName;
311	if sRefVarName in dVars:
312	dFreedVars[sRefVarName] = dVars[sRefVarName];
313	del dVars[sRefVarName];
314	aoStmts.insert(iStmt + 1, iai.McStmt('IEM_MC_FREE_LOCAL', [sRefVarName,]));
315	dFreedVars[sVarName] = oVarInfo;
316	if dVars is not None:
317	del dVars[sVarName];
318
319	def implicitFree(oStmt, dFreedVars, dVars, sVar):
320	oVarInfo = dVars.get(sVar);
321	if oVarInfo:
322	dFreedVars[sVar] = oVarInfo;
323	del dVars[sVar];
324	else:
325	self.raiseProblem('Variable %s was used after implictly freed by %s!' % (sVar, oStmt.sName,));
326
327	dFreedVars = {};
328	for iStmt in range(len(aoStmts) - 1, -1, -1):
329	oStmt = aoStmts[iStmt];
330	if isinstance(oStmt, iai.McStmtCond):
331	#
332	# Conditionals requires a bit more work...
333	#
334
335	# Start by replacing the conditional statement by a shallow copy.
336	oStmt = copy.copy(oStmt);
337	oStmt.aoIfBranch = list(oStmt.aoIfBranch);
338	oStmt.aoElseBranch = list(oStmt.aoElseBranch);
339	aoStmts[iStmt] = oStmt;
340
341	# Check the two branches for final references. Both branches must
342	# start processing with the same dVars set, fortunately as shallow
343	# copy suffices.
344	dFreedInIfBranch = self.__analyzeVariableLiveness(oStmt.aoIfBranch, dict(dVars), iDepth + 1);
345	dFreedInElseBranch = self.__analyzeVariableLiveness(oStmt.aoElseBranch, dVars, iDepth + 1);
346
347	# Add free statements to the start of the IF-branch for variables use
348	# for the last time in the else branch.
349	for sVarName, oVarInfo in dFreedInElseBranch.items():
350	if sVarName not in dFreedInIfBranch:
351	freeVariable(oStmt.aoIfBranch, -1, oVarInfo, dFreedVars, None, False);
352	else:
353	dFreedVars[sVarName] = oVarInfo;
354
355	# And vice versa.
356	for sVarName, oVarInfo in dFreedInIfBranch.items():
357	if sVarName not in dFreedInElseBranch:
358	freeVariable(oStmt.aoElseBranch, -1, oVarInfo, dFreedVars, dVars, False);
359
360	#
361	# Now check if any remaining variables are used for the last time
362	# in the conditional statement ifself, in which case we need to insert
363	# free statements to both branches.
364	#
365	if not oStmt.isCppStmt():
366	aoFreeStmts = [];
367	for sParam in oStmt.asParams:
368	if sParam in dVars:
369	freeVariable(aoFreeStmts, -1, dVars[sParam], dFreedVars, dVars);
370	for oFreeStmt in aoFreeStmts:
371	oStmt.aoIfBranch.insert(0, oFreeStmt);
372	oStmt.aoElseBranch.insert(0, oFreeStmt);
373
374	elif not oStmt.isCppStmt():
375	if isinstance(oStmt, iai.McStmtCall):
376	#
377	# Call statements will make use of all argument variables and
378	# will implicitly free them. So, iterate the variable and
379	# move them from dVars and onto dFreedVars.
380	#
381	# We explictly free any referenced variable that is still in
382	# dVar at this point (since only arguments can hold variable
383	# references).
384	#
385	for sParam in oStmt.asParams[oStmt.idxParams:]:
386	oVarInfo = dVars.get(sParam);
387	if oVarInfo:
388	if not oVarInfo.isArg():
389	self.raiseProblem('Argument %s in %s is not an argument!' % (sParam, oStmt.sName,));
390	if oVarInfo.oReferences:
391	sRefVarName = oVarInfo.oReferences.oStmt.sVarName;
392	if sRefVarName in dVars:
393	dFreedVars[sRefVarName] = dVars[sRefVarName];
394	del dVars[sRefVarName];
395	aoStmts.insert(iStmt + 1, iai.McStmt('IEM_MC_FREE_LOCAL', [sRefVarName,]));
396	dFreedVars[sParam] = oVarInfo;
397	del dVars[sParam];
398	elif sParam in dFreedVars:
399	self.raiseProblem('Argument %s in %s was used after the call!' % (sParam, oStmt.sName,));
400	else:
401	self.raiseProblem('Argument %s in %s is not known to us' % (sParam, oStmt.sName,));
402
403	# Check for stray argument variables.
404	for oVarInfo in dVars.values():
405	if oVarInfo.isArg():
406	self.raiseProblem('Unused argument variable: %s' % (oVarInfo.oStmt.sVarName,));
407
408	elif oStmt.sName in ('IEM_MC_MEM_COMMIT_AND_UNMAP_RW', 'IEM_MC_MEM_COMMIT_AND_UNMAP_RO',
409	'IEM_MC_MEM_COMMIT_AND_UNMAP_WO', 'IEM_MC_MEM_ROLLBACK_AND_UNMAP_WO',
410	'IEM_MC_MEM_COMMIT_AND_UNMAP_ATOMIC',
411	'IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO'):
412	#
413	# The unmap info variable passed to IEM_MC_MEM_COMMIT_AND_UNMAP_RW
414	# and friends is implictly freed and we must make sure it wasn't
415	# used any later. IEM_MC_MEM_COMMIT_AND_UNMAP_FOR_FPU_STORE_WO takes
416	# an additional a_u16FSW argument, which receives the same treatement.
417	#
418	for sParam in oStmt.asParams:
419	implicitFree(oStmt, dFreedVars, dVars, sParam);
420
421	elif oStmt.sName in ('IEM_MC_PUSH_U16', 'IEM_MC_PUSH_U32', 'IEM_MC_PUSH_U32_SREG', 'IEM_MC_PUSH_U64',
422	'IEM_MC_FLAT32_PUSH_U16', 'IEM_MC_FLAT32_PUSH_U32', 'IEM_MC_FLAT32_PUSH_U32_SREG',
423	'IEM_MC_FLAT64_PUSH_U16', 'IEM_MC_FLAT64_PUSH_U64',):
424	#
425	# The variable being pushed is implicitly freed.
426	#
427	for sParam in oStmt.asParams:
428	implicitFree(oStmt, dFreedVars, dVars, sParam);
429	else:
430	#
431	# Scan all the parameters of generic statements.
432	#
433	for sParam in oStmt.asParams:
434	if sParam in dVars:
435	freeVariable(aoStmts, iStmt, dVars[sParam], dFreedVars, dVars);
436
437	#
438	# Free anything left from asVarsInScope that's now going out of scope.
439	#
440	if iDepth > 0:
441	for sVarName in asVarsInScope:
442	if sVarName in dVars:
443	freeVariable(aoStmts, len(aoStmts) - 1, dVars[sVarName], dFreedVars, dVars);
444	if sVarName in dFreedVars:
445	del dFreedVars[sVarName]; ## @todo Try eliminate this one...
446	return dFreedVars;
447
448	kdOptionArchToVal = {
449	'amd64': 'RT_ARCH_VAL_AMD64',
450	'arm64': 'RT_ARCH_VAL_ARM64',
451	};
452
453	def __morphStatements(self, aoStmts, fForLiveness):
454	"""
455	Morphs the given statement list into something more suitable for
456	native recompilation.
457
458	The following is currently done here:
459	- Amend IEM_MC_BEGIN with all the IEM_CIMPL_F_XXX and IEM_MC_F_XXX
460	flags found and derived, including IEM_MC_F_WITHOUT_FLAGS which
461	we determine here.
462	- Insert IEM_MC_FREE_LOCAL when after the last statment a local
463	variable is last used.
464
465	Returns a new list of statements.
466	"""
467	_ = fForLiveness;
468
469	#
470	# We can skip IEM_MC_DEFER_TO_CIMPL_x_RET stuff.
471	#
472	if self.oVariation.oParent.oMcBlock.fDeferToCImpl:
473	return aoStmts;
474
475	#
476	# We make a shallow copy of the list, and only make deep copies of the
477	# statements we modify.
478	#
479	aoStmts = list(aoStmts) # type: list(iai.McStmt)
480
481	#
482	# First, amend the IEM_MC_BEGIN statment, adding all the flags found
483	# to it so the native recompiler can correctly process ARG and CALL
484	# statements (among other things).
485	#
486	# Also add IEM_MC_F_WITHOUT_FLAGS if this isn't a variation with eflags
487	# checking and clearing while there are such variations for this
488	# function (this sounds a bit backwards, but has to be done this way
489	# for the use we make of the flags in CIMPL calls).
490	#
491	# Second, eliminate IEM_MC_NATIVE_IF statements.
492	#
493	iConvArgToLocal = 0;
494	cStmts = len(aoStmts);
495	iStmt = 0;
496	while iStmt < cStmts:
497	oStmt = aoStmts[iStmt];
498	if oStmt.sName == 'IEM_MC_BEGIN':
499	fWithoutFlags = ( self.oVariation.isWithFlagsCheckingAndClearingVariation()
500	and self.oVariation.oParent.hasWithFlagsCheckingAndClearingVariation());
501	if fWithoutFlags or self.oVariation.oParent.dsCImplFlags:
502	oNewStmt = copy.deepcopy(oStmt);
503	if fWithoutFlags:
504	oNewStmt.asParams[2] = ' \| '.join(sorted( list(self.oVariation.oParent.oMcBlock.dsMcFlags.keys())
505	+ ['IEM_MC_F_WITHOUT_FLAGS',] ));
506	if self.oVariation.oParent.dsCImplFlags:
507	oNewStmt.asParams[3] = ' \| '.join(sorted(self.oVariation.oParent.dsCImplFlags.keys()));
508	aoStmts[iStmt] = oNewStmt;
509	elif isinstance(oStmt, iai.McStmtNativeIf):
510	if self.kdOptionArchToVal[self.sHostArch] in oStmt.asArchitectures:
511	iConvArgToLocal += 1;
512	oBranch = oStmt.aoIfBranch;
513	else:
514	iConvArgToLocal = -999;
515	oBranch = oStmt.aoElseBranch;
516	aoStmts = aoStmts[:iStmt] + oBranch + aoStmts[iStmt+1:];
517	cStmts = len(aoStmts);
518	continue;
519
520	iStmt += 1;
521
522	#
523	# If we encountered a IEM_MC_NATIVE_IF and took the native branch,
524	# ASSUME that all ARG variables can be converted to LOCAL variables
525	# because no calls will be made.
526	#
527	if iConvArgToLocal > 0:
528	for iStmt, oStmt in enumerate(aoStmts):
529	if isinstance(oStmt, iai.McStmtArg):
530	if oStmt.sName == 'IEM_MC_ARG':
531	aoStmts[iStmt] = iai.McStmtVar('IEM_MC_LOCAL', oStmt.asParams[:2],
532	oStmt.sType, oStmt.sVarName);
533	elif oStmt.sName == 'IEM_MC_ARG_CONST':
534	aoStmts[iStmt] = iai.McStmtVar('IEM_MC_LOCAL_CONST', oStmt.asParams[:3],
535	oStmt.sType, oStmt.sVarName, oStmt.sValue);
536	else:
537	self.raiseProblem('Unexpected argument declaration when emitting native code: %s (%s)'
538	% (oStmt.sName, oStmt.asParams,));
539	assert(oStmt.sRefType == 'none');
540
541	#
542	# Do a simple liveness analysis of the variable and insert
543	# IEM_MC_FREE_LOCAL statements after the last statements using each
544	# variable. We do this recursively to best handle conditionals and
545	# scoping related to those.
546	#
547	self.__analyzeVariableLiveness(aoStmts, {});
548
549	return aoStmts;
550
551
552	def renderCode(self, cchIndent, fForLiveness = False):
553	"""
554	Returns the native recompiler function body for this threaded variant.
555	"""
556	return iai.McStmt.renderCodeForList(self.__morphStatements(self.oVariation.aoStmtsForThreadedFunction, fForLiveness),
557	cchIndent);
558
559	@staticmethod
560	def checkStatements(aoStmts, sHostArch):
561	"""
562	Checks that all the given statements are supported by the native recompiler.
563	Returns dictionary with the unsupported statments.
564	"""
565	dRet = {};
566	_ = sHostArch;
567	for oStmt in aoStmts: # type: McStmt
568	if not oStmt.isCppStmt():
569	aInfo = iai.g_dMcStmtParsers.get(oStmt.sName);
570	if not aInfo:
571	aInfo = g_dMcStmtThreaded.get(oStmt.sName);
572	if not aInfo:
573	raise Exception('Unknown statement: %s' % (oStmt.sName, ));
574	if aInfo[3] is False:
575	dRet[oStmt.sName] = 1;
576	elif aInfo[3] is not True:
577	if isinstance(aInfo[3], str):
578	if aInfo[3] != sHostArch:
579	dRet[oStmt.sName] = 1;
580	elif sHostArch not in aInfo[3]:
581	dRet[oStmt.sName] = 1;
582	#elif not self.fDecode:
583
584	if isinstance(oStmt, iai.McStmtCond):
585	dRet.update(NativeRecompFunctionVariation.checkStatements(oStmt.aoIfBranch, sHostArch));
586	dRet.update(NativeRecompFunctionVariation.checkStatements(oStmt.aoElseBranch, sHostArch));
587
588	return dRet;
589
590
591	## Statistics: Number of MC blocks (value) depending on each unsupported statement (key).
592	g_dUnsupportedMcStmtStats = {}
593
594	## Statistics: List of variations (value) that is only missing this one statement (key).
595	g_dUnsupportedMcStmtLastOneStats = {}
596
597	### Statistics: List of variations (value) with aimpl_[^0] calls that is only missing this one statement (key).
598	#g_dUnsupportedMcStmtLastOneAImplStats = {}
599
600
601	def analyzeVariantForNativeRecomp(oVariation,
602	sHostArch): # type: (ThreadedFunctionVariation, str) -> NativeRecompFunctionVariation
603	"""
604	This function analyzes the threaded function variant and returns an
605	NativeRecompFunctionVariation instance for it, unless it's not
606	possible to recompile at present.
607
608	Returns NativeRecompFunctionVariation or the number of unsupported MCs.
609	"""
610
611	#
612	# Analyze the statements.
613	#
614	aoStmts = oVariation.aoStmtsForThreadedFunction # type: list(McStmt)
615	dUnsupportedStmts = NativeRecompFunctionVariation.checkStatements(aoStmts, sHostArch);
616	if not dUnsupportedStmts:
617	return NativeRecompFunctionVariation(oVariation, sHostArch);
618
619	#
620	# Update the statistics.
621	#
622	for sStmt in dUnsupportedStmts:
623	g_dUnsupportedMcStmtStats[sStmt] = 1 + g_dUnsupportedMcStmtStats.get(sStmt, 0);
624
625	if len(dUnsupportedStmts) == 1:
626	for sStmt in dUnsupportedStmts:
627	if sStmt in g_dUnsupportedMcStmtLastOneStats:
628	g_dUnsupportedMcStmtLastOneStats[sStmt].append(oVariation);
629	else:
630	g_dUnsupportedMcStmtLastOneStats[sStmt] = [oVariation,];
631
632	#if ( len(dUnsupportedStmts) in (1,2)
633	# and iai.McStmt.findStmtByNames(aoStmts,
634	# { 'IEM_MC_CALL_AIMPL_3': 1,
635	# 'IEM_MC_CALL_AIMPL_4': 1,
636	# #'IEM_MC_CALL_VOID_AIMPL_0': 1, - can't test results... ?
637	# 'IEM_MC_CALL_VOID_AIMPL_1': 1,
638	# 'IEM_MC_CALL_VOID_AIMPL_2': 1,
639	# 'IEM_MC_CALL_VOID_AIMPL_3': 1,
640	# 'IEM_MC_CALL_VOID_AIMPL_4': 1,
641	# #'IEM_MC_CALL_FPU_AIMPL_1': 1,
642	# #'IEM_MC_CALL_FPU_AIMPL_2': 1,
643	# #'IEM_MC_CALL_FPU_AIMPL_3': 1,
644	# #'IEM_MC_CALL_MMX_AIMPL_2': 1,
645	# #'IEM_MC_CALL_MMX_AIMPL_3': 1,
646	# #'IEM_MC_CALL_SSE_AIMPL_2': 1,
647	# #'IEM_MC_CALL_SSE_AIMPL_3': 1,
648	# #'IEM_MC_CALL_AVX_AIMPL_2': 1,
649	# #'IEM_MC_CALL_AVX_AIMPL_3': 1,
650	# #'IEM_MC_CALL_AVX_AIMPL_4': 1,
651	# })):
652	# for sStmt in dUnsupportedStmts:
653	# if sStmt in g_dUnsupportedMcStmtLastOneAImplStats:
654	# g_dUnsupportedMcStmtLastOneAImplStats[sStmt].append(oVariation);
655	# else:
656	# g_dUnsupportedMcStmtLastOneAImplStats[sStmt] = [oVariation,];
657
658	return None;
659
660
661	def analyzeThreadedFunctionsForNativeRecomp(aoThreadedFuncs, sHostArch): # type (list(ThreadedFunction)) -> True
662	"""
663	Displays statistics.
664	"""
665	print('todo:', file = sys.stderr);
666	cTotal = 0;
667	cNative = 0;
668	for oThreadedFunction in aoThreadedFuncs:
669	cNativeVariations = 0;
670	for oVariation in oThreadedFunction.aoVariations:
671	cTotal += 1;
672	oVariation.oNativeRecomp = analyzeVariantForNativeRecomp(oVariation, sHostArch);
673	if oVariation.oNativeRecomp and oVariation.oNativeRecomp.isRecompilable():
674	cNativeVariations += 1;
675	cNative += cNativeVariations;
676
677	# If all variations can be recompiled natively, annotate the threaded
678	# function name accordingly so it'll be easy to spot in the stats.
679	if oThreadedFunction.sSubName:
680	if cNativeVariations == len(oThreadedFunction.aoVariations):
681	aoStmts = oThreadedFunction.oMcBlock.decode();
682	oStmt = iai.McStmt.findStmtByNames(aoStmts, {'IEM_MC_NATIVE_IF': True,});
683	if oStmt and NativeRecompFunctionVariation.kdOptionArchToVal[sHostArch] in oStmt.asArchitectures:
684	oThreadedFunction.sSubName += '_ne'; # native emit
685	elif oThreadedFunction.sSubName.find('aimpl') >= 0:
686	oThreadedFunction.sSubName += '_na'; # native aimpl
687	else:
688	oThreadedFunction.sSubName += '_nn'; # native native
689	elif cNativeVariations == 0:
690	oThreadedFunction.sSubName += '_ntodo'; # native threaded todo
691	else:
692	oThreadedFunction.sSubName += '_nm'; # native mixed
693
694
695	print('todo: %.1f%% / %u out of %u threaded function variations are recompilable'
696	% (cNative * 100.0 / cTotal, cNative, cTotal), file = sys.stderr);
697	if g_dUnsupportedMcStmtLastOneStats:
698	asTopKeys = sorted(g_dUnsupportedMcStmtLastOneStats, reverse = True,
699	key = lambda sSortKey: len(g_dUnsupportedMcStmtLastOneStats[sSortKey]))[:16];
700	print('todo:', file = sys.stderr);
701	print('todo: Top %s variations with one unsupported statement dependency:' % (len(asTopKeys),),
702	file = sys.stderr);
703	cchMaxKey = max([len(sKey) for sKey in asTopKeys]);
704	for sKey in asTopKeys:
705	print('todo: %*s = %s (%s%s)'
706	% (cchMaxKey, sKey, len(g_dUnsupportedMcStmtLastOneStats[sKey]),
707	', '.join([oVar.getShortName() for oVar in g_dUnsupportedMcStmtLastOneStats[sKey][:5]]),
708	',...' if len(g_dUnsupportedMcStmtLastOneStats[sKey]) >= 5 else '', )
709	, file = sys.stderr);
710
711	asTopKeys = sorted(g_dUnsupportedMcStmtStats, reverse = True,
712	key = lambda sSortKey: g_dUnsupportedMcStmtStats[sSortKey])[:16];
713	print('todo:', file = sys.stderr);
714	print('todo: Top %d most used unimplemented statements:' % (len(asTopKeys),), file = sys.stderr);
715	cchMaxKey = max([len(sKey) for sKey in asTopKeys]);
716	for i in range(0, len(asTopKeys), 2):
717	print('todo: %s = %4d %s = %4d'
718	% ( cchMaxKey, asTopKeys[i], g_dUnsupportedMcStmtStats[asTopKeys[i]],
719	cchMaxKey, asTopKeys[i + 1], g_dUnsupportedMcStmtStats[asTopKeys[i + 1]],),
720	file = sys.stderr);
721	print('todo:', file = sys.stderr);
722
723	#if g_dUnsupportedMcStmtLastOneAImplStats:
724	# asTopKeys = sorted(g_dUnsupportedMcStmtLastOneAImplStats, reverse = True,
725	# key = lambda sSortKey: len(g_dUnsupportedMcStmtLastOneAImplStats[sSortKey]))[:16];
726	# print('todo:', file = sys.stderr);
727	# print('todo: Top %s variations with AIMPL call and 1-2 unsupported statement dependencies:' % (len(asTopKeys),),
728	# file = sys.stderr);
729	# cchMaxKey = max([len(sKey) for sKey in asTopKeys]);
730	# for sKey in asTopKeys:
731	# print('todo: %*s = %s (%s%s)'
732	# % (cchMaxKey, sKey, len(g_dUnsupportedMcStmtLastOneAImplStats[sKey]),
733	# ', '.join([oVar.getShortName() for oVar in g_dUnsupportedMcStmtLastOneAImplStats[sKey][:5]]),
734	# ',...' if len(g_dUnsupportedMcStmtLastOneAImplStats[sKey]) >= 5 else '', )
735	# , file = sys.stderr);
736
737	return True;

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source: vbox/trunk/src/VBox/VMM/VMMAll/IEMAllN8vePython.py@ 103773

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