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https://github.com/RPCS3/llvm-mirror.git
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6cb1ff7fe4
I was drafting a patch that would increase broadcast load usage, but our shuffle scrubbing makes it impossible to see if the memory operand offset was getting created correctly. I'm proposing to make that an option (defaulted to 'off' for now to reduce regression test churn). The updated files provide examples of tests where we can now verify that the pointer offset for a loaded memory operand is correct. We still have stack and constant scrubbing that can obscure the operand even if we don't scrub the entire instruction. Differential Revision: https://reviews.llvm.org/D74775
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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