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mf_transforms.py
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mf_transforms.py
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# from loki import FP, Sourcefile, Dimension, Subroutine
from loki import (Frontend, Sourcefile, Scheduler, FindNodes, Loop, Variable,
Assignment, CallStatement, Transformation, Node, SymbolAttributes,
DerivedType, BasicType, Import, Transformer, Conditional, SchedulerConfig
)
from loki.expression import LoopRange, FindVariables, FindTypedSymbols
from loki.expression.expr_visitors import SubstituteExpressions
from loki.expression.symbols import (
Array, Scalar, InlineCall, TypedSymbol, FloatLiteral, IntLiteral, LogicLiteral,
StringLiteral, IntrinsicLiteral, DeferredTypeSymbol, LogicalOr, LogicalAnd, LogicalNot, RangeIndex
)
from loki.ir import Section, Comment, VariableDeclaration, Import, Intrinsic
from pathlib import Path
from termcolor import colored
from loki.logging import info
import sys
class CleanSpec(Transformation):
def transform_subroutine(self, routine, **kwargs):
spec_map = {}
for intr in FindNodes(Intrinsic).visit(routine.spec):
if 'POINTER' in intr.text:
spec_map[intr] = None # Remove Cray pointers declarations
for incl in FindNodes(Import).visit(routine.spec):
if (incl.c_import == True):
spec_map[incl] = None
routine.spec = Transformer(spec_map).visit(routine.spec)
class UniformizeLoops(Transformation):
def __init__(self, horizontal, verbose=False):
self.horizontal = horizontal
self.verbose = verbose
def transform_subroutine(self, routine, **kwargs):
if self.verbose : print("transforming routine ", routine.name)
if self.verbose : print(" ============================== ")
total = 0
if self.horizontal.index not in routine.variable_map:
routine.variables += (Variable(name=self.horizontal.index,type=SymbolAttributes(BasicType.INTEGER), scope=routine), )
loop_map = {}
for loop in FindNodes(Loop).visit(routine.body):
if loop.variable != self.horizontal.index:
if (loop.bounds.upper == routine.variable_map[self.horizontal.bounds[1]] ) :
to_replace = False
if (loop.bounds.lower == routine.variable_map[self.horizontal.bounds[0]] ) :
to_replace = True
if ( isinstance(loop.bounds.lower, IntLiteral) ) :
if (loop.bounds.lower.value == 1):
to_replace = True
print(colored(f'Assuming {loop.bounds.lower} is an alias for {routine.variable_map[self.horizontal.bounds[0]]} in {loop}', 'red' ))
if (to_replace):
if self.verbose : print (f'replacing loop counter : {loop.variable}')
total += 1
new_loop = loop.clone(variable=routine.variable_map[self.horizontal.index])
var_map={}
for var in FindVariables().visit(loop.body):
if (var==loop.variable) :
var_map[var] = routine.variable_map[self.horizontal.index]
loop.body = SubstituteExpressions(var_map).visit(loop.body)
loop.variable=routine.variable_map[self.horizontal.index]
if (total > 0) : info(f'[Loki] {routine.name}:: {total} loops counters replaced by {self.horizontal.index}')
class DerivedTypeDimensions(Transformation):
def __init__(self, horizontal, vertical, block_dim, verbose=False):
self.routine_map = {}
self.var_list = []
self.verbose = verbose
self.first_pass = True
if '%' in horizontal.size : self.var_list.append(horizontal.size)
if len(horizontal.bounds) > 1 :
if '%' in horizontal.bounds[0] : self.var_list.append(horizontal.bounds[0])
if '%' in horizontal.bounds[1] : self.var_list.append(horizontal.bounds[1])
if '%' in vertical.size : self.var_list.append(vertical.size)
if len(vertical.bounds) > 1 :
if '%' in vertical.bounds[0] : self.var_list.append(vertical.bounds[0])
if '%' in vertical.bounds[1] : self.var_list.append(vertical.bounds[1])
if '%' in block_dim.size : self.var_list.append(block_dim.size)
if len(block_dim.bounds) > 1 :
if '%' in block_dim.bounds[0] : self.var_list.append(block_dim.bounds[0])
if '%' in block_dim.bounds[1] : self.var_list.append(block_dim.bounds[1])
def transform_subroutine(self, routine, **kwargs):
if self.verbose : print("transforming routine ", routine.name)
if self.verbose : print(" ============================== ")
if self.first_pass :
self.routine_map[routine.name] = []
to_add=[]
for var in self.var_list :
splitted = var.split('%')
if splitted[0] in routine.variable_map :
if self.verbose : print(f'Derived Type {splitted[0]} found in routine')
var = Variable(name=splitted[1], parent=routine.variable_map[splitted[0]] )
self.routine_map[routine.name].append(var)
routine.variables += (var,)
else :
if self.verbose : print(f'Derived Type {splitted[0]} not found in routine !')
if self.verbose : print(f' member {var} not added')
else:
if self.verbose : print(f'Second pass, {len(routine_map)} variables to remove.')
if (len(self.routine_map) > 0) :
cleaned_variables = filter(lambda x : x not in self.routine_map[routine.name], routine.variables)
routine.variables = tuple(cleaned_variables)
# returns [evaluable, evaluation]
def evaluateCondition(my_condition, true_symbols, false_symbols):
if isinstance(my_condition, DeferredTypeSymbol) or isinstance(my_condition, Scalar):
# Simple terminal symboles : either True, False or not defined
if (my_condition.name in true_symbols):
return[True, True]
elif (my_condition.name in false_symbols):
return[True, False]
else :
return[False, False]
elif isinstance(my_condition, LogicalNot):
[evaluable, evaluation] = evaluateCondition(my_condition.child, true_symbols, false_symbols)
return [evaluable, not evaluation]
elif isinstance(my_condition, LogicalOr):
# Evaluates to True if a child evaluates to True
# Evaluates to False if both children evaluate to False
# Cannot be evaluated otherwise
maybe_false = True
for c in my_condition.children :
evaluable, evaluation = evaluateCondition(c, true_symbols, false_symbols)
if (evaluable and evaluation ) :
return[True, True]
elif (not evaluable) :
maybe_false = False
# If all children evaluated and we did not return, they were false => evaluate OR as false
if (maybe_false) :
return [True, False]
else :
return [False, False]
elif isinstance(my_condition, LogicalAnd):
# Evaluates to True if both children evaluate to True
# Evaluates to False if a child evaluates to False
# Cannot be evaluated otherwise
maybe_true = True
for c in my_condition.children :
evaluable, evaluation = evaluateCondition(c, true_symbols, false_symbols)
if (evaluable and not evaluation) :
return [True, False]
elif (not evaluable) :
maybe_true = False
# If all children evaluated and we did not return, they were true => evaluate AND as true
if (maybe_true) :
return [True, True]
else :
return [False, False]
else :
if self.verbose : print("untreated class :", my_condition.__class__)
return[False, False]
class LogicalsPreproc(Transformation):
def __init__(self, true_symbols=[], false_symbols=[], verbose = False):
self.true_symbols = true_symbols
self.false_symbols = false_symbols
self.verbose = verbose
def transform_subroutine(self, routine, **kwargs):
if self.verbose : print ("Treating routine ", routine.name)
callmap={}
for cond in FindNodes(Conditional).visit(routine.body):
# If at least one of the forced-value symbols is present in the condition, we can try to evaluate it
evaluable = False
for symbol in FindTypedSymbols().visit(cond.condition) :
if (symbol in self.true_symbols or symbol in self.false_symbols):
evaluable = True
if evaluable :
[evaluable, evaluation] = evaluateCondition(cond.condition, self.true_symbols, self.false_symbols)
if self.verbose : print ("condition : ", cond.condition)
if self.verbose : print("evaluated : ", evaluable, " --- value : ", evaluation)
if evaluable :
if evaluation :
callmap[cond] = cond.body
else:
callmap[cond] = cond.else_body
routine.body=Transformer(callmap).visit(routine.body)
class ExplicitArraySyntaxes(Transformation):
def __init__(self, horizontal, verbose = False):
self.horizontal = horizontal
self.verbose = verbose
def transform_subroutine(self, routine, **kwargs):
role = kwargs['role']
if role == 'kernel':
self.process_kernel(routine)
def process_kernel(self, routine):
if self.verbose : print("transforming routine ", routine.name)
if self.verbose : print(" ============================== ")
total = 0
assign_map={}
begin_index = None
end_index = None
if '%' in self.horizontal.bounds[0]:
splitted = self.horizontal.bounds[0].split('%')
for var in FindVariables().visit(routine.variables):
if (var.name == splitted[0]):
begin_index=Variable(name=f'{var.name}%{splitted[1]}', parent=var, scope=routine)
if self.verbose : print(colored("derived type " + splitted[0] + " found", "green"))
else:
for var in FindVariables().visit(routine.variables):
if (var.name == self.horizontal.bounds[0]):
begin_index = var
if self.verbose : print(colored("variable " + var.name + " found", "green"))
if '%' in self.horizontal.bounds[1]:
splitted = self.horizontal.bounds[1].split('%')
for var in FindVariables().visit(routine.variables):
if (var.name == splitted[0]):
end_index=Variable(name=f'{var.name}%{splitted[1]}', parent=var, scope=routine)
if self.verbose : print(colored("derived type " + splitted[0] + " found", "green"))
else:
for var in FindVariables().visit(routine.variables):
if (var.name == self.horizontal.bounds[1]):
end_index = var
if self.verbose : print(colored("variable " + var.name + " found", "green"))
if not (begin_index or end_index):
raise RuntimeError(f'index variables not found in routine {routine.name}')
for assign in FindNodes(Assignment).visit(routine.body):
expression_map={}
for var in FindVariables().visit(assign):
if isinstance(var, Array):
if (len(var.dimensions) > 0):
if (var.dimensions[0] == ':'):
# Check if variable seems to be of the correct size
found_in_routine_vars = False
if (var.name in routine.variable_map) :
if self.verbose : print ("Variable", var.name, " found in routine variables")
routine_var =routine.variable_map[var.name]
dim_name = routine_var.dimensions[0].name
if (dim_name == self.horizontal.size):
if self.verbose : print(colored("First dimension of array is "+dim_name, "green"))
newrange = RangeIndex( (begin_index, end_index, None) )
newdimensions = (newrange,) + var.dimensions[1:]
new_var = var.clone(dimensions=newdimensions)
expression_map[var] = new_var
else:
print(colored("Unexpected first dimension of array : " + dim_name, "red"))
else :
print (colored("Variable not found in routine variables !", "red"))
if expression_map:
total += len(expression_map)
explicited_assign = SubstituteExpressions(expression_map).visit(assign)
assign_map[assign] = explicited_assign
if self.verbose : print("Transforming ", assign)
if self.verbose : print(" into ", explicited_assign, "\n")
routine.body=Transformer(assign_map).visit(routine.body)
if (total > 0) : info(f'[Loki] {routine.name}:: {total} implicit array syntax expressions replaced with explicit boundaries')