| #!/usr/bin/env python3 |
| |
| """A test case update script. |
| |
| This script is a utility to update LLVM 'llc' based test cases with new |
| FileCheck patterns. It can either update all of the tests in the file or |
| a single test function. |
| """ |
| |
| from __future__ import print_function |
| |
| import argparse |
| import os # Used to advertise this file's name ("autogenerated_note"). |
| |
| from UpdateTestChecks import asm, common |
| |
| # llc is the only llc-like in the LLVM tree but downstream forks can add |
| # additional ones here if they have them. |
| LLC_LIKE_TOOLS = ('llc',) |
| |
| def main(): |
| parser = argparse.ArgumentParser(description=__doc__) |
| parser.add_argument('--llc-binary', default=None, |
| help='The "llc" binary to use to generate the test case') |
| parser.add_argument( |
| '--function', help='The function in the test file to update') |
| parser.add_argument( |
| '--extra_scrub', action='store_true', |
| help='Always use additional regex to further reduce diffs between various subtargets') |
| parser.add_argument( |
| '--x86_scrub_sp', action='store_true', default=True, |
| help='Use regex for x86 sp matching to reduce diffs between various subtargets') |
| parser.add_argument( |
| '--no_x86_scrub_sp', action='store_false', dest='x86_scrub_sp') |
| parser.add_argument( |
| '--x86_scrub_rip', action='store_true', default=True, |
| help='Use more regex for x86 rip matching to reduce diffs between various subtargets') |
| parser.add_argument( |
| '--no_x86_scrub_rip', action='store_false', dest='x86_scrub_rip') |
| parser.add_argument( |
| '--no_x86_scrub_mem_shuffle', action='store_true', default=False, |
| help='Reduce scrubbing shuffles with memory operands') |
| parser.add_argument('tests', nargs='+') |
| initial_args = common.parse_commandline_args(parser) |
| |
| script_name = os.path.basename(__file__) |
| |
| for ti in common.itertests(initial_args.tests, parser, |
| script_name='utils/' + script_name): |
| triple_in_ir = None |
| for l in ti.input_lines: |
| m = common.TRIPLE_IR_RE.match(l) |
| if m: |
| triple_in_ir = m.groups()[0] |
| break |
| |
| run_list = [] |
| for l in ti.run_lines: |
| if '|' not in l: |
| common.warn('Skipping unparseable RUN line: ' + l) |
| continue |
| |
| commands = [cmd.strip() for cmd in l.split('|', 1)] |
| llc_cmd = commands[0] |
| llc_tool = llc_cmd.split(' ')[0] |
| |
| triple_in_cmd = None |
| m = common.TRIPLE_ARG_RE.search(llc_cmd) |
| if m: |
| triple_in_cmd = m.groups()[0] |
| |
| march_in_cmd = None |
| m = common.MARCH_ARG_RE.search(llc_cmd) |
| if m: |
| march_in_cmd = m.groups()[0] |
| |
| filecheck_cmd = '' |
| if len(commands) > 1: |
| filecheck_cmd = commands[1] |
| common.verify_filecheck_prefixes(filecheck_cmd) |
| if llc_tool not in LLC_LIKE_TOOLS: |
| common.warn('Skipping non-llc RUN line: ' + l) |
| continue |
| |
| if not filecheck_cmd.startswith('FileCheck '): |
| common.warn('Skipping non-FileChecked RUN line: ' + l) |
| continue |
| |
| llc_cmd_args = llc_cmd[len(llc_tool):].strip() |
| llc_cmd_args = llc_cmd_args.replace('< %s', '').replace('%s', '').strip() |
| if ti.path.endswith('.mir'): |
| llc_cmd_args += ' -x mir' |
| check_prefixes = [item for m in common.CHECK_PREFIX_RE.finditer(filecheck_cmd) |
| for item in m.group(1).split(',')] |
| if not check_prefixes: |
| check_prefixes = ['CHECK'] |
| |
| # FIXME: We should use multiple check prefixes to common check lines. For |
| # now, we just ignore all but the last. |
| run_list.append((check_prefixes, llc_cmd_args, triple_in_cmd, march_in_cmd)) |
| |
| if ti.path.endswith('.mir'): |
| check_indent = ' ' |
| else: |
| check_indent = '' |
| |
| builder = common.FunctionTestBuilder( |
| run_list=run_list, |
| flags=type('', (object,), { |
| 'verbose': ti.args.verbose, |
| 'function_signature': False, |
| 'check_attributes': False}), |
| scrubber_args=[ti.args]) |
| |
| for prefixes, llc_args, triple_in_cmd, march_in_cmd in run_list: |
| common.debug('Extracted LLC cmd:', llc_tool, llc_args) |
| common.debug('Extracted FileCheck prefixes:', str(prefixes)) |
| |
| raw_tool_output = common.invoke_tool(ti.args.llc_binary or llc_tool, |
| llc_args, ti.path) |
| triple = triple_in_cmd or triple_in_ir |
| if not triple: |
| triple = asm.get_triple_from_march(march_in_cmd) |
| |
| scrubber, function_re = asm.get_run_handler(triple) |
| builder.process_run_line(function_re, scrubber, raw_tool_output, prefixes) |
| |
| func_dict = builder.finish_and_get_func_dict() |
| |
| is_in_function = False |
| is_in_function_start = False |
| func_name = None |
| prefix_set = set([prefix for p in run_list for prefix in p[0]]) |
| common.debug('Rewriting FileCheck prefixes:', str(prefix_set)) |
| output_lines = [] |
| |
| include_generated_funcs = common.find_arg_in_test(ti, |
| lambda args: ti.args.include_generated_funcs, |
| '--include-generated-funcs', |
| True) |
| |
| if include_generated_funcs: |
| # Generate the appropriate checks for each function. We need to emit |
| # these in the order according to the generated output so that CHECK-LABEL |
| # works properly. func_order provides that. |
| |
| # We can't predict where various passes might insert functions so we can't |
| # be sure the input function order is maintained. Therefore, first spit |
| # out all the source lines. |
| common.dump_input_lines(output_lines, ti, prefix_set, ';') |
| |
| # Now generate all the checks. |
| common.add_checks_at_end(output_lines, run_list, builder.func_order(), |
| check_indent + ';', |
| lambda my_output_lines, prefixes, func: |
| asm.add_asm_checks(my_output_lines, |
| check_indent + ';', |
| prefixes, func_dict, func)) |
| else: |
| for input_info in ti.iterlines(output_lines): |
| input_line = input_info.line |
| args = input_info.args |
| if is_in_function_start: |
| if input_line == '': |
| continue |
| if input_line.lstrip().startswith(';'): |
| m = common.CHECK_RE.match(input_line) |
| if not m or m.group(1) not in prefix_set: |
| output_lines.append(input_line) |
| continue |
| |
| # Print out the various check lines here. |
| asm.add_asm_checks(output_lines, check_indent + ';', run_list, func_dict, func_name) |
| is_in_function_start = False |
| |
| if is_in_function: |
| if common.should_add_line_to_output(input_line, prefix_set): |
| # This input line of the function body will go as-is into the output. |
| output_lines.append(input_line) |
| else: |
| continue |
| if input_line.strip() == '}': |
| is_in_function = False |
| continue |
| |
| # If it's outside a function, it just gets copied to the output. |
| output_lines.append(input_line) |
| |
| m = common.IR_FUNCTION_RE.match(input_line) |
| if not m: |
| continue |
| func_name = m.group(1) |
| if args.function is not None and func_name != args.function: |
| # When filtering on a specific function, skip all others. |
| continue |
| is_in_function = is_in_function_start = True |
| |
| common.debug('Writing %d lines to %s...' % (len(output_lines), ti.path)) |
| |
| with open(ti.path, 'wb') as f: |
| f.writelines(['{}\n'.format(l).encode('utf-8') for l in output_lines]) |
| |
| |
| if __name__ == '__main__': |
| main() |
