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#
# Copyright (c) 2008, Mahadevan R All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# * Neither the name of this software, nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
"""Pass managers and passes.
This module provides the LLVM pass managers and the passes themselves.
All transformation passes listed at http://www.llvm.org/docs/Passes.html
are available.
"""
import llvm # top-level, for common stuff
import llvm.ee as ee # target data
import llvm.core as core # module provider, function etc.
import llvm._core as _core # C wrappers
# passes
PASS_AGGRESSIVE_DCE = 1
PASS_ARGUMENT_PROMOTION = 2
PASS_BLOCK_PLACEMENT = 3
PASS_BREAK_CRITICAL_EDGES = 4
PASS_CODE_GEN_PREPARE = 5
PASS_COND_PROPAGATION = 6
PASS_CONSTANT_MERGE = 7
PASS_CONSTANT_PROPAGATION = 8
PASS_DEAD_CODE_ELIMINATION = 9
PASS_DEAD_ARG_ELIMINATION = 10
PASS_DEAD_TYPE_ELIMINATION = 11
PASS_DEAD_INST_ELIMINATION = 12
PASS_DEAD_STORE_ELIMINATION = 13
# PASS_GCSE = 14: removed in LLVM 2.4
PASS_GLOBAL_DCE = 15
PASS_GLOBAL_OPTIMIZER = 16
PASS_GVN = 17
PASS_GVNPRE = 18
PASS_IND_MEM_REM = 19
PASS_IND_VAR_SIMPLIFY = 20
PASS_FUNCTION_INLINING = 21
PASS_BLOCK_PROFILER = 22
PASS_EDGE_PROFILER = 23
PASS_FUNCTION_PROFILER = 24
PASS_NULL_PROFILER_RS = 25
PASS_RS_PROFILING = 26
PASS_INSTRUCTION_COMBINING = 27
PASS_INTERNALIZE = 28
PASS_IP_CONSTANT_PROPAGATION = 29
PASS_IPSCCP = 30
PASS_JUMP_THREADING = 31
PASS_LCSSA = 32
PASS_LICM = 33
PASS_LOOP_DELETION = 34
PASS_LOOP_EXTRACTOR = 35
PASS_SINGLE_LOOP_EXTRACTOR = 36
PASS_LOOP_INDEX_SPLIT = 37
PASS_LOOP_STRENGTH_REDUCE = 38
PASS_LOOP_ROTATE = 39
PASS_LOOP_UNROLL = 40
PASS_LOOP_UNSWITCH = 41
PASS_LOOP_SIMPLIFY = 42
PASS_LOWER_ALLOCATIONS = 43
PASS_LOWER_INVOKE = 44
PASS_LOWER_SET_JMP = 45
PASS_LOWER_SWITCH = 46
PASS_PROMOTE_MEMORY_TO_REGISTER = 47
PASS_MEM_CPY_OPT = 48
PASS_UNIFY_FUNCTION_EXIT_NODES = 49
PASS_PREDICATE_SIMPLIFIER = 50
PASS_PRUNE_EH = 51
PASS_RAISE_ALLOCATIONS = 52
PASS_REASSOCIATE = 53
PASS_DEMOTE_REGISTER_TO_MEMORY = 54
PASS_SCALAR_REPL_AGGREGATES = 55
PASS_SCCP = 56
PASS_SIMPLIFY_LIB_CALLS = 57
PASS_CFG_SIMPLIFICATION = 58
PASS_STRIP_SYMBOLS = 59
PASS_STRIP_DEAD_PROTOTYPES = 60
PASS_STRUCT_RET_PROMOTION = 61
PASS_TAIL_CALL_ELIMINATION = 62
PASS_TAIL_DUPLICATION = 63
#===----------------------------------------------------------------------===
# Helper functions
#===----------------------------------------------------------------------===
_pass_creator = {
PASS_AGGRESSIVE_DCE : _core.LLVMAddAggressiveDCEPass,
PASS_ARGUMENT_PROMOTION : _core.LLVMAddArgumentPromotionPass,
PASS_BLOCK_PLACEMENT : _core.LLVMAddBlockPlacementPass,
PASS_BREAK_CRITICAL_EDGES : _core.LLVMAddBreakCriticalEdgesPass,
PASS_CODE_GEN_PREPARE : _core.LLVMAddCodeGenPreparePass,
PASS_COND_PROPAGATION : _core.LLVMAddCondPropagationPass,
PASS_CONSTANT_MERGE : _core.LLVMAddConstantMergePass,
PASS_CONSTANT_PROPAGATION : _core.LLVMAddConstantPropagationPass,
PASS_DEAD_CODE_ELIMINATION : _core.LLVMAddDeadCodeEliminationPass,
PASS_DEAD_ARG_ELIMINATION : _core.LLVMAddDeadArgEliminationPass,
PASS_DEAD_TYPE_ELIMINATION : _core.LLVMAddDeadTypeEliminationPass,
PASS_DEAD_INST_ELIMINATION : _core.LLVMAddDeadInstEliminationPass,
PASS_DEAD_STORE_ELIMINATION : _core.LLVMAddDeadStoreEliminationPass,
# PASS_GCSE : _core.LLVMAddGCSEPass,: removed in LLVM 2.4.
PASS_GLOBAL_DCE : _core.LLVMAddGlobalDCEPass,
PASS_GLOBAL_OPTIMIZER : _core.LLVMAddGlobalOptimizerPass,
PASS_GVN : _core.LLVMAddGVNPass,
PASS_GVNPRE : _core.LLVMAddGVNPREPass,
PASS_IND_MEM_REM : _core.LLVMAddIndMemRemPass,
PASS_IND_VAR_SIMPLIFY : _core.LLVMAddIndVarSimplifyPass,
PASS_FUNCTION_INLINING : _core.LLVMAddFunctionInliningPass,
PASS_BLOCK_PROFILER : _core.LLVMAddBlockProfilerPass,
PASS_EDGE_PROFILER : _core.LLVMAddEdgeProfilerPass,
PASS_FUNCTION_PROFILER : _core.LLVMAddFunctionProfilerPass,
PASS_NULL_PROFILER_RS : _core.LLVMAddNullProfilerRSPass,
PASS_RS_PROFILING : _core.LLVMAddRSProfilingPass,
PASS_INSTRUCTION_COMBINING : _core.LLVMAddInstructionCombiningPass,
PASS_INTERNALIZE : _core.LLVMAddInternalizePass,
PASS_IP_CONSTANT_PROPAGATION : _core.LLVMAddIPConstantPropagationPass,
PASS_IPSCCP : _core.LLVMAddIPSCCPPass,
PASS_JUMP_THREADING : _core.LLVMAddJumpThreadingPass,
PASS_LCSSA : _core.LLVMAddLCSSAPass,
PASS_LICM : _core.LLVMAddLICMPass,
PASS_LOOP_DELETION : _core.LLVMAddLoopDeletionPass,
PASS_LOOP_EXTRACTOR : _core.LLVMAddLoopExtractorPass,
PASS_SINGLE_LOOP_EXTRACTOR : _core.LLVMAddSingleLoopExtractorPass,
PASS_LOOP_INDEX_SPLIT : _core.LLVMAddLoopIndexSplitPass,
PASS_LOOP_STRENGTH_REDUCE : _core.LLVMAddLoopStrengthReducePass,
PASS_LOOP_ROTATE : _core.LLVMAddLoopRotatePass,
PASS_LOOP_UNROLL : _core.LLVMAddLoopUnrollPass,
PASS_LOOP_UNSWITCH : _core.LLVMAddLoopUnswitchPass,
PASS_LOOP_SIMPLIFY : _core.LLVMAddLoopSimplifyPass,
PASS_LOWER_ALLOCATIONS : _core.LLVMAddLowerAllocationsPass,
PASS_LOWER_INVOKE : _core.LLVMAddLowerInvokePass,
PASS_LOWER_SET_JMP : _core.LLVMAddLowerSetJmpPass,
PASS_LOWER_SWITCH : _core.LLVMAddLowerSwitchPass,
PASS_PROMOTE_MEMORY_TO_REGISTER : _core.LLVMAddPromoteMemoryToRegisterPass,
PASS_MEM_CPY_OPT : _core.LLVMAddMemCpyOptPass,
PASS_UNIFY_FUNCTION_EXIT_NODES : _core.LLVMAddUnifyFunctionExitNodesPass,
PASS_PREDICATE_SIMPLIFIER : _core.LLVMAddPredicateSimplifierPass,
PASS_PRUNE_EH : _core.LLVMAddPruneEHPass,
PASS_RAISE_ALLOCATIONS : _core.LLVMAddRaiseAllocationsPass,
PASS_REASSOCIATE : _core.LLVMAddReassociatePass,
PASS_DEMOTE_REGISTER_TO_MEMORY : _core.LLVMAddDemoteRegisterToMemoryPass,
PASS_SCALAR_REPL_AGGREGATES : _core.LLVMAddScalarReplAggregatesPass,
PASS_SCCP : _core.LLVMAddSCCPPass,
PASS_SIMPLIFY_LIB_CALLS : _core.LLVMAddSimplifyLibCallsPass,
PASS_CFG_SIMPLIFICATION : _core.LLVMAddCFGSimplificationPass,
PASS_STRIP_SYMBOLS : _core.LLVMAddStripSymbolsPass,
PASS_STRIP_DEAD_PROTOTYPES : _core.LLVMAddStripDeadPrototypesPass,
PASS_STRUCT_RET_PROMOTION : _core.LLVMAddStructRetPromotionPass,
PASS_TAIL_CALL_ELIMINATION : _core.LLVMAddTailCallEliminationPass,
PASS_TAIL_DUPLICATION : _core.LLVMAddTailDuplicationPass,
}
#===----------------------------------------------------------------------===
# Pass manager
#===----------------------------------------------------------------------===
class PassManager(object):
@staticmethod
def new():
return PassManager(_core.LLVMCreatePassManager())
def __init__(self, ptr):
self.ptr = ptr
def __del__(self):
_core.LLVMDisposePassManager(self.ptr)
def add(self, tgt_data_or_pass_id):
if isinstance(tgt_data_or_pass_id, ee.TargetData):
self._add_target_data(tgt_data_or_pass_id)
elif tgt_data_or_pass_id in _pass_creator:
self._add_pass(tgt_data_or_pass_id)
else:
raise llvm.LLVMException, \
("invalid pass_id (%s)" % str(tgt_data_or_pass_id))
def _add_target_data(self, tgt):
_core.LLVMAddTargetData(tgt.ptr, self.ptr)
def _add_pass(self, pass_id):
cfn = _pass_creator[pass_id]
cfn(self.ptr)
def run(self, module):
core.check_is_module(module)
return _core.LLVMRunPassManager(self.ptr, module.ptr)
class FunctionPassManager(PassManager):
@staticmethod
def new(mp):
core.check_is_module_provider(mp)
return FunctionPassManager(_core.LLVMCreateFunctionPassManager(mp.ptr))
def __init__(self, ptr):
PassManager.__init__(self, ptr)
def initialize(self):
_core.LLVMInitializeFunctionPassManager(self.ptr)
def run(self, fn):
core.check_is_function(fn)
return _core.LLVMRunFunctionPassManager(self.ptr, fn.ptr)
def finalize(self):
_core.LLVMFinalizeFunctionPassManager(self.ptr)
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