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