116 lines
4.6 KiB
Python
116 lines
4.6 KiB
Python
# Copyright (C) 2014 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from common.logger import Logger
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from file_format.common import split_stream
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from file_format.c1visualizer.struct import C1visualizerFile, C1visualizerPass
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import re
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class C1ParserState:
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OUTSIDE_BLOCK, INSIDE_COMPILATION_BLOCK, STARTING_CFG_BLOCK, INSIDE_CFG_BLOCK = range(4)
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def __init__(self):
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self.current_state = C1ParserState.OUTSIDE_BLOCK
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self.last_method_name = None
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def _parse_c1_line(c1_file, line, line_no, state, filename):
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""" This function is invoked on each line of the output file and returns
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a triplet which instructs the parser how the line should be handled. If the
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line is to be included in the current group, it is returned in the first
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value. If the line starts a new output group, the name of the group is
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returned in the second value. The third value is only here to make the
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function prototype compatible with `SplitStream` and is always set to
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`None` here.
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"""
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if state.current_state == C1ParserState.STARTING_CFG_BLOCK:
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# Previous line started a new 'cfg' block which means that this one must
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# contain the name of the pass (this is enforced by C1visualizer).
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if re.match(r'name\s+"[^"]+"', line):
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# Extract the pass name, prepend it with the name of the method and
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# return as the beginning of a new group.
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state.current_state = C1ParserState.INSIDE_CFG_BLOCK
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return None, state.last_method_name + " " + line.split('"')[1], None
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else:
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Logger.fail("Expected output group name", filename, line_no)
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elif state.current_state == C1ParserState.INSIDE_CFG_BLOCK:
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if line == "end_cfg":
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state.current_state = C1ParserState.OUTSIDE_BLOCK
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return None, None, None
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else:
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return line, None, None
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elif state.current_state == C1ParserState.INSIDE_COMPILATION_BLOCK:
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# Search for the method's name. Format: method "<name>"
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if re.match(r'method\s+"[^"]*"', line):
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method_name = line.split('"')[1].strip()
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if not method_name:
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Logger.fail("Empty method name in output", filename, line_no)
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match = re.search(r"isa_features:([\w,-]+)", method_name)
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if match:
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raw_features = match.group(1).split(",")
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# Create a map of features in the form {feature_name: is_enabled}.
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features = {}
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for rf in raw_features:
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feature_name = rf
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is_enabled = True
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# A '-' in front of the feature name indicates that the feature wasn't enabled at compile
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# time.
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if rf[0] == "-":
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feature_name = rf[1:]
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is_enabled = False
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features[feature_name] = is_enabled
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c1_file.set_isa_features(features)
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else:
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state.last_method_name = method_name
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elif line == "end_compilation":
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state.current_state = C1ParserState.OUTSIDE_BLOCK
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return None, None, None
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else:
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assert state.current_state == C1ParserState.OUTSIDE_BLOCK
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if line == "begin_cfg":
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# The line starts a new group but we'll wait until the next line from
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# which we can extract the name of the pass.
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if state.last_method_name is None:
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Logger.fail("Expected method header", filename, line_no)
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state.current_state = C1ParserState.STARTING_CFG_BLOCK
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return None, None, None
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elif line == "begin_compilation":
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state.current_state = C1ParserState.INSIDE_COMPILATION_BLOCK
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return None, None, None
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else:
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Logger.fail("C1visualizer line not inside a group", filename, line_no)
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def parse_c1_visualizer_stream(filename, stream):
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c1_file = C1visualizerFile(filename)
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state = C1ParserState()
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def fn_process_line(line, line_no):
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return _parse_c1_line(c1_file, line, line_no, state, c1_file.base_file_name)
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def fn_line_outside_chunk(line, line_no):
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Logger.fail("C1visualizer line not inside a group", c1_file.base_file_name, line_no)
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for pass_name, pass_lines, start_line_no, test_arch in split_stream(stream, fn_process_line,
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fn_line_outside_chunk):
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C1visualizerPass(c1_file, pass_name, pass_lines, start_line_no + 1)
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return c1_file
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