196 lines
6.5 KiB
Python
Executable File
196 lines
6.5 KiB
Python
Executable File
#!/usr/bin/env python3
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"""A test case update script.
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This script is a utility to update LLVM 'llc' based test cases with new
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FileCheck patterns. It can either update all of the tests in the file or
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a single test function.
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"""
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from __future__ import print_function
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import argparse
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import glob
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import os # Used to advertise this file's name ("autogenerated_note").
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import string
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import subprocess
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import sys
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import re
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from UpdateTestChecks import asm, common
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ADVERT = ' NOTE: Assertions have been autogenerated by '
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('--llc-binary', default='llc',
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help='The "llc" binary to use to generate the test case')
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parser.add_argument(
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'--function', help='The function in the test file to update')
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parser.add_argument(
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'--extra_scrub', action='store_true',
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help='Always use additional regex to further reduce diffs between various subtargets')
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parser.add_argument(
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'--x86_scrub_rip', action='store_true', default=True,
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help='Use more regex for x86 matching to reduce diffs between various subtargets')
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parser.add_argument(
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'--no_x86_scrub_rip', action='store_false', dest='x86_scrub_rip')
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parser.add_argument(
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'--no_x86_scrub_mem_shuffle', action='store_true', default=False,
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help='Reduce scrubbing shuffles with memory operands')
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parser.add_argument('tests', nargs='+')
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args = common.parse_commandline_args(parser)
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script_name = os.path.basename(__file__)
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test_paths = [test for pattern in args.tests for test in glob.glob(pattern)]
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for test in test_paths:
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with open(test) as f:
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input_lines = [l.rstrip() for l in f]
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first_line = input_lines[0] if input_lines else ""
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if 'autogenerated' in first_line and script_name not in first_line:
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common.warn("Skipping test which wasn't autogenerated by " + script_name, test)
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continue
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if args.update_only:
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if not first_line or 'autogenerated' not in first_line:
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common.warn("Skipping test which isn't autogenerated: " + test)
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continue
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triple_in_ir = None
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for l in input_lines:
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m = common.TRIPLE_IR_RE.match(l)
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if m:
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triple_in_ir = m.groups()[0]
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break
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run_lines = common.find_run_lines(test, input_lines)
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run_list = []
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for l in run_lines:
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if '|' not in l:
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common.warn('Skipping unparseable RUN line: ' + l)
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continue
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commands = [cmd.strip() for cmd in l.split('|', 1)]
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llc_cmd = commands[0]
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llc_tool = llc_cmd.split(' ')[0]
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triple_in_cmd = None
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m = common.TRIPLE_ARG_RE.search(llc_cmd)
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if m:
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triple_in_cmd = m.groups()[0]
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march_in_cmd = None
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m = common.MARCH_ARG_RE.search(llc_cmd)
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if m:
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march_in_cmd = m.groups()[0]
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filecheck_cmd = ''
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if len(commands) > 1:
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filecheck_cmd = commands[1]
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common.verify_filecheck_prefixes(filecheck_cmd)
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if llc_tool != 'llc':
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common.warn('Skipping non-llc RUN line: ' + l)
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continue
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if not filecheck_cmd.startswith('FileCheck '):
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common.warn('Skipping non-FileChecked RUN line: ' + l)
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continue
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llc_cmd_args = llc_cmd[len(llc_tool):].strip()
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llc_cmd_args = llc_cmd_args.replace('< %s', '').replace('%s', '').strip()
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if test.endswith('.mir'):
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llc_cmd_args += ' -x mir'
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check_prefixes = [item for m in common.CHECK_PREFIX_RE.finditer(filecheck_cmd)
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for item in m.group(1).split(',')]
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if not check_prefixes:
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check_prefixes = ['CHECK']
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# FIXME: We should use multiple check prefixes to common check lines. For
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# now, we just ignore all but the last.
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run_list.append((check_prefixes, llc_cmd_args, triple_in_cmd, march_in_cmd))
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if test.endswith('.mir'):
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comment_sym = '#'
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check_indent = ' '
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else:
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comment_sym = ';'
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check_indent = ''
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autogenerated_note = (comment_sym + ADVERT + 'utils/' + script_name)
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func_dict = {}
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for p in run_list:
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prefixes = p[0]
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for prefix in prefixes:
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func_dict.update({prefix: dict()})
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for prefixes, llc_args, triple_in_cmd, march_in_cmd in run_list:
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common.debug('Extracted LLC cmd:', llc_tool, llc_args)
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common.debug('Extracted FileCheck prefixes:', str(prefixes))
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raw_tool_output = common.invoke_tool(args.llc_binary, llc_args, test)
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triple = triple_in_cmd or triple_in_ir
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if not triple:
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triple = asm.get_triple_from_march(march_in_cmd)
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asm.build_function_body_dictionary_for_triple(args, raw_tool_output,
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triple, prefixes, func_dict)
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is_in_function = False
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is_in_function_start = False
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func_name = None
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prefix_set = set([prefix for p in run_list for prefix in p[0]])
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common.debug('Rewriting FileCheck prefixes:', str(prefix_set))
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output_lines = []
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output_lines.append(autogenerated_note)
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for input_line in input_lines:
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if is_in_function_start:
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if input_line == '':
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continue
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if input_line.lstrip().startswith(';'):
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m = common.CHECK_RE.match(input_line)
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if not m or m.group(1) not in prefix_set:
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output_lines.append(input_line)
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continue
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# Print out the various check lines here.
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asm.add_asm_checks(output_lines, check_indent + ';', run_list, func_dict, func_name)
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is_in_function_start = False
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if is_in_function:
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if common.should_add_line_to_output(input_line, prefix_set):
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# This input line of the function body will go as-is into the output.
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output_lines.append(input_line)
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else:
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continue
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if input_line.strip() == '}':
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is_in_function = False
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continue
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# Discard any previous script advertising.
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if input_line.startswith(comment_sym + ADVERT):
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continue
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# If it's outside a function, it just gets copied to the output.
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output_lines.append(input_line)
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m = common.IR_FUNCTION_RE.match(input_line)
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if not m:
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continue
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func_name = m.group(1)
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if args.function is not None and func_name != args.function:
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# When filtering on a specific function, skip all others.
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continue
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is_in_function = is_in_function_start = True
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common.debug('Writing %d lines to %s...' % (len(output_lines), test))
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with open(test, 'wb') as f:
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f.writelines(['{}\n'.format(l).encode('utf-8') for l in output_lines])
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if __name__ == '__main__':
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main()
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