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| #!/usr/bin/python
# This creates a CSV file from the output of the debug output of subtarget:
# llvm-tblgen --gen-subtarget --debug-only=subtarget-emitter
# With thanks to Dave Estes for mentioning the idea at 2014 LLVM Developers' Meeting
import os;
import sys;
import re;
import operator;
table = {}
models = set()
filt = None
def add(instr, model, resource=None):
global table, models
entry = table.setdefault(instr, dict())
entry[model] = resource
models.add(model)
def filter_model(m):
global filt
if m and filt:
return filt.search(m) != None
else:
return True
def display():
global table, models
# remove default and itinerary so we can control their sort order to make
# them first
models.discard("default")
models.discard("itinerary")
ordered_table = sorted(table.items(), key=operator.itemgetter(0))
ordered_models = ["itinerary", "default"]
ordered_models.extend(sorted(models))
ordered_models = [m for m in ordered_models if filter_model(m)]
# print header
sys.stdout.write("instruction")
for model in ordered_models:
sys.stdout.write(", {}".format(model))
sys.stdout.write(os.linesep)
for (instr, mapping) in ordered_table:
sys.stdout.write(instr)
for model in ordered_models:
if model in mapping and mapping[model] is not None:
sys.stdout.write(", {}".format(mapping[model]))
else:
sys.stdout.write(", ")
sys.stdout.write(os.linesep)
def machineModelCover(path):
# The interesting bits
re_sched_default = re.compile("SchedRW machine model for ([^ ]*) (.*)\n");
re_sched_no_default = re.compile("No machine model for ([^ ]*)\n");
re_sched_spec = re.compile("InstRW on ([^ ]*) for ([^ ]*) (.*)\n");
re_sched_no_spec = re.compile("No machine model for ([^ ]*) on processor (.*)\n");
re_sched_itin = re.compile("Itinerary for ([^ ]*): ([^ ]*)\n")
# scan the file
with open(path, 'r') as f:
for line in f.readlines():
match = re_sched_default.match(line)
if match: add(match.group(1), "default", match.group(2))
match = re_sched_no_default.match(line)
if match: add(match.group(1), "default")
match = re_sched_spec.match(line)
if match: add(match.group(2), match.group(1), match.group(3))
match = re_sched_no_spec.match(line)
if match: add(match.group(1), match.group(2))
match = re_sched_itin.match(line)
if match: add(match.group(1), "itinerary", match.group(2))
display()
if len(sys.argv) > 2:
filt = re.compile(sys.argv[2], re.IGNORECASE)
machineModelCover(sys.argv[1])
|