363 lines
12 KiB
Python
363 lines
12 KiB
Python
"""MIR test utility functions for UpdateTestChecks scripts."""
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import re
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import sys
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from UpdateTestChecks import common
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from UpdateTestChecks.common import (
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CHECK_RE,
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warn,
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)
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IR_FUNC_NAME_RE = re.compile(
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r"^\s*define\s+(?:internal\s+)?[^@]*@(?P<func>[A-Za-z0-9_.]+)\s*\("
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)
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IR_PREFIX_DATA_RE = re.compile(r"^ *(;|$)")
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MIR_FUNC_NAME_RE = re.compile(r" *name: *(?P<func>[A-Za-z0-9_.-]+)")
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MIR_BODY_BEGIN_RE = re.compile(r" *body: *\|")
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MIR_BASIC_BLOCK_RE = re.compile(r" *bb\.[0-9]+.*:$")
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MIR_PREFIX_DATA_RE = re.compile(r"^ *(;|bb.[0-9].*: *$|[a-z]+:( |$)|$)")
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VREG_RE = re.compile(r"(%[0-9]+)(?:\.[a-z0-9_]+)?(?::[a-z0-9_]+)?(?:\([<>a-z0-9 ]+\))?")
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MI_FLAGS_STR = (
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r"(frame-setup |frame-destroy |nnan |ninf |nsz |arcp |contract |afn "
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r"|reassoc |nuw |nsw |exact |nofpexcept |nomerge |unpredictable "
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r"|noconvergent |nneg |disjoint |nusw |samesign |inbounds )*"
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)
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VREG_DEF_FLAGS_STR = r"(?:dead |undef )*"
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# Pattern to match the defined vregs and the opcode of an instruction that
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# defines vregs. Opcodes starting with a lower-case 't' are allowed to match
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# ARM's thumb instructions, like tADDi8 and t2ADDri.
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VREG_DEF_RE = re.compile(
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r"^ *(?P<vregs>{2}{0}(?:, {2}{0})*) = "
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r"{1}(?P<opcode>[A-Zt][A-Za-z0-9_]+)".format(
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VREG_RE.pattern, MI_FLAGS_STR, VREG_DEF_FLAGS_STR
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)
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)
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MIR_FUNC_RE = re.compile(
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r"^---$"
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r"\n"
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r"^ *name: *(?P<func>[A-Za-z0-9_.-]+)$"
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r".*?"
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r"(?:^ *fixedStack: *(\[\])? *\n"
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r"(?P<fixedStack>.*?)\n?"
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r"^ *stack:"
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r".*?)?"
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r"^ *body: *\|\n"
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r"(?P<body>.*?)\n"
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r"^\.\.\.$",
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flags=(re.M | re.S),
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)
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def build_function_info_dictionary(
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test, raw_tool_output, triple, prefixes, func_dict, verbose
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):
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for m in MIR_FUNC_RE.finditer(raw_tool_output):
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func = m.group("func")
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fixedStack = m.group("fixedStack")
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body = m.group("body")
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if verbose:
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print("Processing function: {}".format(func), file=sys.stderr)
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for l in body.splitlines():
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print(" {}".format(l), file=sys.stderr)
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# Vreg mangling
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mangled = []
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vreg_map = {}
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for func_line in body.splitlines(keepends=True):
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m = VREG_DEF_RE.match(func_line)
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if m:
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for vreg in VREG_RE.finditer(m.group("vregs")):
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if vreg.group(1) in vreg_map:
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name = vreg_map[vreg.group(1)]
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else:
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name = mangle_vreg(m.group("opcode"), vreg_map.values())
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vreg_map[vreg.group(1)] = name
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func_line = func_line.replace(
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vreg.group(1), "[[{}:%[0-9]+]]".format(name), 1
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)
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for number, name in vreg_map.items():
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func_line = re.sub(
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r"{}\b".format(number), "[[{}]]".format(name), func_line
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)
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mangled.append(func_line)
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body = "".join(mangled)
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for prefix in prefixes:
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info = common.function_body(
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body, fixedStack, None, None, None, None, ginfo=None
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)
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if func in func_dict[prefix]:
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if (
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not func_dict[prefix][func]
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or func_dict[prefix][func].scrub != info.scrub
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or func_dict[prefix][func].extrascrub != info.extrascrub
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):
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func_dict[prefix][func] = None
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else:
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func_dict[prefix][func] = info
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def mangle_vreg(opcode, current_names):
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base = opcode
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# Simplify some common prefixes and suffixes
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if opcode.startswith("G_"):
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base = base[len("G_") :]
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if opcode.endswith("_PSEUDO"):
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base = base[: len("_PSEUDO")]
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# Shorten some common opcodes with long-ish names
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base = dict(
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IMPLICIT_DEF="DEF",
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GLOBAL_VALUE="GV",
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CONSTANT="C",
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FCONSTANT="C",
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MERGE_VALUES="MV",
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UNMERGE_VALUES="UV",
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INTRINSIC="INT",
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INTRINSIC_W_SIDE_EFFECTS="INT",
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INSERT_VECTOR_ELT="IVEC",
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EXTRACT_VECTOR_ELT="EVEC",
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SHUFFLE_VECTOR="SHUF",
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).get(base, base)
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# Avoid ambiguity when opcodes end in numbers
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if len(base.rstrip("0123456789")) < len(base):
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base += "_"
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i = 0
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for name in current_names:
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if name.rstrip("0123456789") == base:
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i += 1
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if i:
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return "{}{}".format(base, i)
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return base
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def find_mir_functions_with_one_bb(lines, verbose=False):
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result = []
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cur_func = None
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bbs = 0
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for line in lines:
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m = MIR_FUNC_NAME_RE.match(line)
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if m:
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if bbs == 1:
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result.append(cur_func)
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cur_func = m.group("func")
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bbs = 0
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m = MIR_BASIC_BLOCK_RE.match(line)
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if m:
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bbs += 1
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if bbs == 1:
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result.append(cur_func)
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return result
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def add_mir_checks_for_function(
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test,
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output_lines,
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run_list,
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func_dict,
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func_name,
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single_bb,
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print_fixed_stack,
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first_check_is_next,
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at_the_function_name,
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):
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printed_prefixes = set()
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for run in run_list:
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for prefix in run[0]:
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if prefix in printed_prefixes:
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break
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if not func_dict[prefix][func_name]:
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continue
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if printed_prefixes:
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# Add some space between different check prefixes.
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indent = len(output_lines[-1]) - len(output_lines[-1].lstrip(" "))
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output_lines.append(" " * indent + ";")
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printed_prefixes.add(prefix)
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add_mir_check_lines(
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test,
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output_lines,
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prefix,
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("@" if at_the_function_name else "") + func_name,
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single_bb,
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func_dict[prefix][func_name],
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print_fixed_stack,
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first_check_is_next,
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)
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break
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else:
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warn(
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"Found conflicting asm for function: {}".format(func_name),
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test_file=test,
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)
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return output_lines
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def add_mir_check_lines(
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test,
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output_lines,
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prefix,
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func_name,
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single_bb,
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func_info,
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print_fixed_stack,
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first_check_is_next,
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):
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func_body = str(func_info).splitlines()
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if single_bb:
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# Don't bother checking the basic block label for a single BB
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func_body.pop(0)
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if not func_body:
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warn(
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"Function has no instructions to check: {}".format(func_name),
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test_file=test,
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)
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return
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first_line = func_body[0]
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indent = len(first_line) - len(first_line.lstrip(" "))
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# A check comment, indented the appropriate amount
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check = "{:>{}}; {}".format("", indent, prefix)
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output_lines.append("{}-LABEL: name: {}".format(check, func_name))
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if print_fixed_stack:
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output_lines.append("{}: fixedStack:".format(check))
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for stack_line in func_info.extrascrub.splitlines():
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filecheck_directive = check + "-NEXT"
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output_lines.append("{}: {}".format(filecheck_directive, stack_line))
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first_check = not first_check_is_next
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for func_line in func_body:
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if not func_line.strip():
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# The mir printer prints leading whitespace so we can't use CHECK-EMPTY:
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output_lines.append(check + "-NEXT: {{" + func_line + "$}}")
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continue
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filecheck_directive = check if first_check else check + "-NEXT"
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first_check = False
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check_line = "{}: {}".format(filecheck_directive, func_line[indent:]).rstrip()
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output_lines.append(check_line)
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def should_add_mir_line_to_output(input_line, prefix_set):
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# Skip any check lines that we're handling as well as comments
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m = CHECK_RE.match(input_line)
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if (m and m.group(1) in prefix_set) or input_line.strip() == ";":
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return False
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return True
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def add_mir_checks(
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input_lines,
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prefix_set,
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autogenerated_note,
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test,
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run_list,
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func_dict,
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print_fixed_stack,
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first_check_is_next,
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at_the_function_name,
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):
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simple_functions = find_mir_functions_with_one_bb(input_lines)
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output_lines = []
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output_lines.append(autogenerated_note)
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func_name = None
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state = "toplevel"
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for input_line in input_lines:
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if input_line == autogenerated_note:
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continue
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if state == "toplevel":
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m = IR_FUNC_NAME_RE.match(input_line)
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if m:
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state = "ir function prefix"
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func_name = m.group("func")
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if input_line.rstrip("| \r\n") == "---":
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state = "document"
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output_lines.append(input_line)
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elif state == "document":
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m = MIR_FUNC_NAME_RE.match(input_line)
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if m:
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state = "mir function metadata"
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func_name = m.group("func")
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if input_line.strip() == "...":
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state = "toplevel"
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func_name = None
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if should_add_mir_line_to_output(input_line, prefix_set):
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output_lines.append(input_line)
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elif state == "mir function metadata":
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if should_add_mir_line_to_output(input_line, prefix_set):
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output_lines.append(input_line)
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m = MIR_BODY_BEGIN_RE.match(input_line)
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if m:
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if func_name in simple_functions:
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# If there's only one block, put the checks inside it
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state = "mir function prefix"
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continue
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state = "mir function body"
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add_mir_checks_for_function(
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test,
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output_lines,
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run_list,
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func_dict,
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func_name,
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single_bb=False,
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print_fixed_stack=print_fixed_stack,
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first_check_is_next=first_check_is_next,
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at_the_function_name=at_the_function_name,
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)
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elif state == "mir function prefix":
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m = MIR_PREFIX_DATA_RE.match(input_line)
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if not m:
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state = "mir function body"
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add_mir_checks_for_function(
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test,
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output_lines,
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run_list,
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func_dict,
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func_name,
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single_bb=True,
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print_fixed_stack=print_fixed_stack,
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first_check_is_next=first_check_is_next,
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at_the_function_name=at_the_function_name,
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)
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if should_add_mir_line_to_output(input_line, prefix_set):
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output_lines.append(input_line)
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elif state == "mir function body":
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if input_line.strip() == "...":
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state = "toplevel"
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func_name = None
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if should_add_mir_line_to_output(input_line, prefix_set):
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output_lines.append(input_line)
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elif state == "ir function prefix":
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m = IR_PREFIX_DATA_RE.match(input_line)
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if not m:
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state = "ir function body"
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add_mir_checks_for_function(
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test,
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output_lines,
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run_list,
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func_dict,
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func_name,
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single_bb=False,
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print_fixed_stack=print_fixed_stack,
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first_check_is_next=first_check_is_next,
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at_the_function_name=at_the_function_name,
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)
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if should_add_mir_line_to_output(input_line, prefix_set):
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output_lines.append(input_line)
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elif state == "ir function body":
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if input_line.strip() == "}":
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state = "toplevel"
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func_name = None
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if should_add_mir_line_to_output(input_line, prefix_set):
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output_lines.append(input_line)
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return output_lines
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