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from enum import IntFlag
from llvmlite.binding import ffi
def create_new_module_pass_manager():
return ModulePassManager()
def create_new_function_pass_manager():
return FunctionPassManager()
def create_pass_builder(tm, pto):
return PassBuilder(tm, pto)
def create_pipeline_tuning_options(speed_level=2, size_level=0):
return PipelineTuningOptions(speed_level, size_level)
class RefPruneSubpasses(IntFlag):
PER_BB = 0b0001 # noqa: E221
DIAMOND = 0b0010 # noqa: E221
FANOUT = 0b0100 # noqa: E221
FANOUT_RAISE = 0b1000
ALL = PER_BB | DIAMOND | FANOUT | FANOUT_RAISE
class ModulePassManager(ffi.ObjectRef):
def __init__(self, ptr=None):
if ptr is None:
ptr = ffi.lib.LLVMPY_CreateNewModulePassManager()
super().__init__(ptr)
def run(self, module, pb):
ffi.lib.LLVMPY_RunNewModulePassManager(self, module, pb)
def add_verifier(self):
ffi.lib.LLVMPY_AddVerifierPass(self)
def add_aa_eval_pass(self):
ffi.lib.LLVMPY_AddAAEvalPass_module(self)
def add_simplify_cfg_pass(self):
ffi.lib.LLVMPY_AddSimplifyCFGPass_module(self)
def add_loop_unroll_pass(self):
ffi.lib.LLVMPY_AddLoopUnrollPass_module(self)
def add_loop_rotate_pass(self):
ffi.lib.LLVMPY_AddLoopRotatePass_module(self)
def add_instruction_combine_pass(self):
ffi.lib.LLVMPY_AddInstructionCombinePass_module(self)
def add_jump_threading_pass(self, threshold=-1):
ffi.lib.LLVMPY_AddJumpThreadingPass_module(self, threshold)
def _dispose(self):
ffi.lib.LLVMPY_DisposeNewModulePassManger(self)
# Non-standard LLVM passes
def add_refprune_pass(self, subpasses_flags=RefPruneSubpasses.ALL,
subgraph_limit=1000):
"""Add Numba specific Reference count pruning pass.
Parameters
----------
subpasses_flags : RefPruneSubpasses
A bitmask to control the subpasses to be enabled.
subgraph_limit : int
Limit the fanout pruners to working on a subgraph no bigger than
this number of basic-blocks to avoid spending too much time in very
large graphs. Default is 1000. Subject to change in future
versions.
"""
iflags = RefPruneSubpasses(subpasses_flags)
ffi.lib.LLVMPY_AddRefPrunePass_module(self, iflags, subgraph_limit)
class FunctionPassManager(ffi.ObjectRef):
def __init__(self, ptr=None):
if ptr is None:
ptr = ffi.lib.LLVMPY_CreateNewFunctionPassManager()
super().__init__(ptr)
def run(self, fun, pb):
ffi.lib.LLVMPY_RunNewFunctionPassManager(self, fun, pb)
def add_aa_eval_pass(self):
ffi.lib.LLVMPY_AddAAEvalPass_function(self)
def add_simplify_cfg_pass(self):
ffi.lib.LLVMPY_AddSimplifyCFGPass_function(self)
def add_loop_unroll_pass(self):
ffi.lib.LLVMPY_AddLoopUnrollPass_function(self)
def add_loop_rotate_pass(self):
ffi.lib.LLVMPY_AddLoopRotatePass_function(self)
def add_instruction_combine_pass(self):
ffi.lib.LLVMPY_AddInstructionCombinePass_function(self)
def add_jump_threading_pass(self, threshold=-1):
ffi.lib.LLVMPY_AddJumpThreadingPass_function(self, threshold)
def _dispose(self):
ffi.lib.LLVMPY_DisposeNewFunctionPassManger(self)
# Non-standard LLVM passes
def add_refprune_pass(self, subpasses_flags=RefPruneSubpasses.ALL,
subgraph_limit=1000):
"""Add Numba specific Reference count pruning pass.
Parameters
----------
subpasses_flags : RefPruneSubpasses
A bitmask to control the subpasses to be enabled.
subgraph_limit : int
Limit the fanout pruners to working on a subgraph no bigger than
this number of basic-blocks to avoid spending too much time in very
large graphs. Default is 1000. Subject to change in future
versions.
"""
iflags = RefPruneSubpasses(subpasses_flags)
ffi.lib.LLVMPY_AddRefPrunePass_function(self, iflags, subgraph_limit)
class PipelineTuningOptions(ffi.ObjectRef):
def __init__(self, speed_level=2, size_level=0):
self._speed_level = None
self._size_level = None
self.speed_level = speed_level
self.size_level = size_level
super().__init__(ffi.lib.LLVMPY_CreatePipelineTuningOptions())
@property
def speed_level(self):
return self._speed_level
@speed_level.setter
def speed_level(self, value):
if not 0 <= value <= 3:
raise ValueError(
"Optimization level for speed should be 0, 1, 2, or 3")
self._speed_level = value
@property
def size_level(self):
return self._size_level
@size_level.setter
def size_level(self, value):
if not 0 <= value <= 2:
raise ValueError("Optimization level for size should be 0, 1, or 2")
if value != 0 and self.speed_level != 2:
raise ValueError(
"Optimization for size should be encoded with speed level == 2")
self._size_level = value
@property
def loop_interleaving(self):
return ffi.lib.LLVMPY_PTOGetLoopInterleaving(self)
@loop_interleaving.setter
def loop_interleaving(self, value):
ffi.lib.LLVMPY_PTOSetLoopInterleaving(self, value)
@property
def loop_vectorization(self):
return ffi.lib.LLVMPY_PTOGetLoopVectorization(self)
@loop_vectorization.setter
def loop_vectorization(self, value):
ffi.lib.LLVMPY_PTOSetLoopVectorization(self, value)
@property
def slp_vectorization(self):
return ffi.lib.LLVMPY_PTOGetSLPVectorization(self)
@slp_vectorization.setter
def slp_vectorization(self, value):
ffi.lib.LLVMPY_PTOSetSLPVectorization(self, value)
@property
def loop_unrolling(self):
return ffi.lib.LLVMPY_PTOGetLoopUnrolling(self)
@loop_unrolling.setter
def loop_unrolling(self, value):
ffi.lib.LLVMPY_PTOSetLoopUnrolling(self, value)
# // FIXME: Available from llvm16
# @property
# def inlining_threshold(self):
# return ffi.lib.LLVMPY_PTOGetInlinerThreshold(self)
# @inlining_threshold.setter
# def inlining_threshold(self, value):
# ffi.lib.LLVMPY_PTOSetInlinerThreshold(self, value)
def _dispose(self):
ffi.lib.LLVMPY_DisposePipelineTuningOptions(self)
class PassBuilder(ffi.ObjectRef):
def __init__(self, tm, pto):
super().__init__(ffi.lib.LLVMPY_CreatePassBuilder(tm, pto))
self._pto = pto
self._tm = tm
def getModulePassManager(self):
return ModulePassManager(
ffi.lib.LLVMPY_buildPerModuleDefaultPipeline(
self, self._pto.speed_level, self._pto.size_level)
)
def getFunctionPassManager(self):
return FunctionPassManager(
ffi.lib.LLVMPY_buildFunctionSimplificationPipeline(
self, self._pto.speed_level, self._pto.size_level)
)
def _dispose(self):
ffi.lib.LLVMPY_DisposePassBuilder(self)
# ============================================================================
# FFI
# ModulePassManager
ffi.lib.LLVMPY_CreateNewModulePassManager.restype = ffi.LLVMModulePassManagerRef
ffi.lib.LLVMPY_RunNewModulePassManager.argtypes = [
ffi.LLVMModulePassManagerRef, ffi.LLVMModuleRef,
ffi.LLVMPassBuilderRef,]
ffi.lib.LLVMPY_AddVerifierPass.argtypes = [ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_AddAAEvalPass_module.argtypes = [ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_AddSimplifyCFGPass_module.argtypes = [
ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_AddLoopUnrollPass_module.argtypes = [
ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_AddLoopRotatePass_module.argtypes = [
ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_AddInstructionCombinePass_module.argtypes = [
ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_AddJumpThreadingPass_module.argtypes = [
ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_DisposeNewModulePassManger.argtypes = [
ffi.LLVMModulePassManagerRef,]
ffi.lib.LLVMPY_AddRefPrunePass_module.argtypes = [
ffi.LLVMModulePassManagerRef, c_int, c_size_t,
]
# FunctionPassManager
ffi.lib.LLVMPY_CreateNewFunctionPassManager.restype = \
ffi.LLVMFunctionPassManagerRef
ffi.lib.LLVMPY_RunNewFunctionPassManager.argtypes = [
ffi.LLVMFunctionPassManagerRef, ffi.LLVMValueRef,
ffi.LLVMPassBuilderRef,]
ffi.lib.LLVMPY_AddAAEvalPass_function.argtypes = [
ffi.LLVMFunctionPassManagerRef,]
ffi.lib.LLVMPY_AddSimplifyCFGPass_function.argtypes = [
ffi.LLVMFunctionPassManagerRef,]
ffi.lib.LLVMPY_AddLoopUnrollPass_function.argtypes = [
ffi.LLVMFunctionPassManagerRef,]
ffi.lib.LLVMPY_AddLoopRotatePass_function.argtypes = [
ffi.LLVMFunctionPassManagerRef,]
ffi.lib.LLVMPY_AddInstructionCombinePass_function.argtypes = [
ffi.LLVMFunctionPassManagerRef,]
ffi.lib.LLVMPY_AddJumpThreadingPass_function.argtypes = [
ffi.LLVMFunctionPassManagerRef, c_int,]
ffi.lib.LLVMPY_DisposeNewFunctionPassManger.argtypes = [
ffi.LLVMFunctionPassManagerRef,]
ffi.lib.LLVMPY_AddRefPrunePass_function.argtypes = [
ffi.LLVMFunctionPassManagerRef, c_int, c_size_t,
]
# PipelineTuningOptions
ffi.lib.LLVMPY_CreatePipelineTuningOptions.restype = \
ffi.LLVMPipelineTuningOptionsRef
ffi.lib.LLVMPY_PTOGetLoopInterleaving.restype = c_bool
ffi.lib.LLVMPY_PTOGetLoopInterleaving.argtypes = [
ffi.LLVMPipelineTuningOptionsRef,]
ffi.lib.LLVMPY_PTOSetLoopInterleaving.argtypes = [
ffi.LLVMPipelineTuningOptionsRef, c_bool]
ffi.lib.LLVMPY_PTOGetLoopVectorization.restype = c_bool
ffi.lib.LLVMPY_PTOGetLoopVectorization.argtypes = [
ffi.LLVMPipelineTuningOptionsRef,]
ffi.lib.LLVMPY_PTOSetLoopVectorization.argtypes = [
ffi.LLVMPipelineTuningOptionsRef, c_bool]
ffi.lib.LLVMPY_PTOGetSLPVectorization.restype = c_bool
ffi.lib.LLVMPY_PTOGetSLPVectorization.argtypes = [
ffi.LLVMPipelineTuningOptionsRef,]
ffi.lib.LLVMPY_PTOSetSLPVectorization.argtypes = [
ffi.LLVMPipelineTuningOptionsRef, c_bool]
ffi.lib.LLVMPY_PTOGetLoopUnrolling.restype = c_bool
ffi.lib.LLVMPY_PTOGetLoopUnrolling.argtypes = [
ffi.LLVMPipelineTuningOptionsRef,]
ffi.lib.LLVMPY_PTOSetLoopUnrolling.argtypes = [
ffi.LLVMPipelineTuningOptionsRef, c_bool]
ffi.lib.LLVMPY_DisposePipelineTuningOptions.argtypes = \
[ffi.LLVMPipelineTuningOptionsRef,]
# PassBuilder
ffi.lib.LLVMPY_CreatePassBuilder.restype = ffi.LLVMPassBuilderRef
ffi.lib.LLVMPY_CreatePassBuilder.argtypes = [ffi.LLVMTargetMachineRef,
ffi.LLVMPipelineTuningOptionsRef,]
ffi.lib.LLVMPY_DisposePassBuilder.argtypes = [ffi.LLVMPassBuilderRef,]
# Pipeline builders
ffi.lib.LLVMPY_buildPerModuleDefaultPipeline.restype = \
ffi.LLVMModulePassManagerRef
ffi.lib.LLVMPY_buildPerModuleDefaultPipeline.argtypes = [
ffi.LLVMPassBuilderRef, c_int, c_int]
ffi.lib.LLVMPY_buildFunctionSimplificationPipeline.restype = \
ffi.LLVMFunctionPassManagerRef
ffi.lib.LLVMPY_buildFunctionSimplificationPipeline.argtypes = [
ffi.LLVMPassBuilderRef, c_int, c_int]
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