37a68497f1
To avoid test churn when backends add/rename new instructions/registers, it makes sense to use FileCheck captures for the exact MCInst/Reg number. This is motivated by D125307, where I use --asm-show-inst to differentiate the output for multiple instructions with the same mnemonic. This does not quite fix the churn issue yet: While files with the generated checks will be immune to the numbers changing, the update script test still suffers from this problem since the number is encoded in the FileCheck variable name. I plan to address this in a follow-up patch. Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D125307
58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
import re
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from . import common
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import sys
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if sys.version_info[0] > 2:
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class string:
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expandtabs = str.expandtabs
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else:
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import string
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# Support of isel debug checks
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# RegEx: this is where the magic happens.
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##### iSel parser
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# TODO: add function prefix
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ISEL_FUNCTION_DEFAULT_RE = re.compile(
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r'Selected[\s]*selection[\s]*DAG:[\s]*%bb.0[\s]*\'(?P<func>.*?):[^\']*\'*\n'
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r'(?P<body>.*?)\n'
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r'Total[\s]*amount[\s]*of[\s]*phi[\s]*nodes[\s]*to[\s]*update:[\s]*[0-9]+',
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flags=(re.M | re.S))
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def scrub_isel_default(isel, args):
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# Scrub runs of whitespace out of the iSel debug output, but leave the leading
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# whitespace in place.
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isel = common.SCRUB_WHITESPACE_RE.sub(r' ', isel)
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# Expand the tabs used for indentation.
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isel = string.expandtabs(isel, 2)
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# Strip trailing whitespace.
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isel = common.SCRUB_TRAILING_WHITESPACE_RE.sub(r'', isel)
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return isel
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def get_run_handler(triple):
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target_handlers = {
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}
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handler = None
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best_prefix = ''
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for prefix, s in target_handlers.items():
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if triple.startswith(prefix) and len(prefix) > len(best_prefix):
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handler = s
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best_prefix = prefix
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if handler is None:
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common.debug('Using default handler.')
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handler = (scrub_isel_default, ISEL_FUNCTION_DEFAULT_RE)
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return handler
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##### Generator of iSel CHECK lines
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def add_checks(output_lines, comment_marker, prefix_list, func_dict, func_name,
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global_vars_seen_dict, is_filtered):
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# Label format is based on iSel string.
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check_label_format = '{} %s-LABEL: %s%s%s'.format(comment_marker)
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common.add_checks(output_lines, comment_marker, prefix_list, func_dict,
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func_name, check_label_format, True, False,
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global_vars_seen_dict, is_filtered = is_filtered)
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