def start(self, align=True, branch=True):
if self.r_count is None:
self.r_count = self.code.acquire_register()
if self.mode == CTR and branch:
if self.step_size() != 1:
raise Exception(
'CTR loops must have step_size of 1, you used ' +
str(self.step_size()))
if self.external_stop:
self.code.add(ppc.mtctr(self.r_stop))
else:
util.load_word(self.code, self.r_count, self.n_steps())
self.code.add(ppc.mtctr(self.r_count))
self.code.release_register(self.r_count)
self.r_count = None
elif self.mode == DEC:
util.load_word(self.code, self.r_count, self.get_count())
elif self.mode == INC:
if self.r_stop is None and branch:
self.r_stop = self.code.acquire_register()
util.load_word(self.code, self.r_count, self.get_start())
if branch and not self.external_stop:
util.load_word(self.code, self.r_stop, self.get_count())
# /end mode if
if self.r_count is not None:
# self.current_count = metavar.int_var(self.code, reg = self.r_count)
self.current_count = vars.UnsignedWord(reg=self.r_count)
if align and branch:
# Align the start of the loop on a 16 byte boundary
while (self.code.size()) % 4 != 0:
self.code.add(ppc.noop())
# Label
self.start_label = self.code.size() + 1
return
def start(self, align = True, branch = True):
if self.r_count is None:
self.r_count = self.code.prgm.acquire_register()
if self.mode == CTR and branch:
if self.step_size() != 1:
raise Exception('CTR loops must have step_size of 1, you used ' + str(self.step_size()))
if self.external_stop:
self.code.add(ppc.mtctr(self.r_stop))
else:
util.load_word(self.code, self.r_count, self.n_steps())
self.code.add(ppc.mtctr(self.r_count))
self.code.prgm.release_register(self.r_count)
self.r_count = None
elif self.mode == DEC:
util.load_word(self.code, self.r_count, self.get_count())
elif self.mode == INC:
if self.r_stop is None and branch:
self.r_stop = self.code.prgm.acquire_register()
util.load_word(self.code, self.r_count, self.get_start())
if branch and not self.external_stop:
util.load_word(self.code, self.r_stop, self.get_count())
# /end mode if
if self.r_count is not None:
self.current_count = vars.UnsignedWord(code = self.code, reg = self.r_count)
if align and branch:
# Align the start of the loop on a 16 byte boundary
while (self.code.size()) % 4 != 0:
self.code.add(ppc.noop())
# Label
self.start_label = self.code.prgm.get_unique_label("SYN_ITER_START")
self.code.add(self.start_label)
return
def start(self, align=True, branch=True):
self.obj.start(align=False, branch=branch)
code = self.obj.code
# replace count with rank
if self.obj.mode == CTR:
raise Expcetion('Parallel CTR loops not supported')
elif self.obj.mode == DEC:
raise Expcetion('Parallel DEC loops not supported')
elif self.obj.mode == INC:
self._update_inc_count()
if align and branch:
# Align the start of the loop on a 16 byte boundary
while (code.size()) % 4 != 0:
code.add(ppc.noop())
# Update the real iterator's label
self.obj.start_label = code.size() + 1
return
def start(self, align = True, branch = True):
self.obj.start(align = False, branch = branch)
code = self.obj.code
# replace count with rank
if self.obj.mode == CTR:
raise Exception('Parallel CTR loops not supported')
elif self.obj.mode == DEC:
raise Exception('Parallel DEC loops not supported')
elif self.obj.mode == INC:
self._update_inc_count()
if align and branch:
# Align the start of the loop on a 16 byte boundary
while (code.size()) % 4 != 0:
code.add(ppc.noop())
# Update the real iterator's label
self.obj.start_label = code.prgm.get_unique_label("PARALLEL_START")
code.add(self.obj.start_label)
return
