mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
da0198de41
asm and port the mmx vector shuffle test to it. Not thrilled with how it handles the stack manipulation logic, but I'm much less bothered by that than I am by updating the test manually. =] If anyone wants to teach the test checks management script about stack adjustment patterns, that'd be cool too. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229268 91177308-0d34-0410-b5e6-96231b3b80d8
214 lines
7.5 KiB
Python
Executable File
214 lines
7.5 KiB
Python
Executable File
#!/usr/bin/env python2.7
|
|
|
|
"""A test case update script.
|
|
|
|
This script is a utility to update LLVM X86 'llc' based test cases with new
|
|
FileCheck patterns. It can either update all of the tests in the file or
|
|
a single test function.
|
|
"""
|
|
|
|
import argparse
|
|
import itertools
|
|
import string
|
|
import subprocess
|
|
import sys
|
|
import tempfile
|
|
import re
|
|
|
|
|
|
def llc(args, cmd_args, ir):
|
|
with open(ir) as ir_file:
|
|
stdout = subprocess.check_output(args.llc_binary + ' ' + cmd_args,
|
|
shell=True, stdin=ir_file)
|
|
return stdout
|
|
|
|
|
|
ASM_SCRUB_WHITESPACE_RE = re.compile(r'(?!^(| \w))[ \t]+', flags=re.M)
|
|
ASM_SCRUB_TRAILING_WHITESPACE_RE = re.compile(r'[ \t]+$', flags=re.M)
|
|
ASM_SCRUB_SHUFFLES_RE = (
|
|
re.compile(
|
|
r'^(\s*\w+) [^#\n]+#+ ((?:[xyz]mm\d+|mem) = .*)$',
|
|
flags=re.M))
|
|
ASM_SCRUB_SP_RE = re.compile(r'\d+\(%(esp|rsp)\)')
|
|
ASM_SCRUB_RIP_RE = re.compile(r'[.\w]+\(%rip\)')
|
|
ASM_SCRUB_KILL_COMMENT_RE = re.compile(r'^ *#+ +kill:.*\n')
|
|
|
|
|
|
def scrub_asm(asm):
|
|
# Scrub runs of whitespace out of the assembly, but leave the leading
|
|
# whitespace in place.
|
|
asm = ASM_SCRUB_WHITESPACE_RE.sub(r' ', asm)
|
|
# Expand the tabs used for indentation.
|
|
asm = string.expandtabs(asm, 2)
|
|
# Detect shuffle asm comments and hide the operands in favor of the comments.
|
|
asm = ASM_SCRUB_SHUFFLES_RE.sub(r'\1 {{.*#+}} \2', asm)
|
|
# Generically match the stack offset of a memory operand.
|
|
asm = ASM_SCRUB_SP_RE.sub(r'{{[0-9]+}}(%\1)', asm)
|
|
# Generically match a RIP-relative memory operand.
|
|
asm = ASM_SCRUB_RIP_RE.sub(r'{{.*}}(%rip)', asm)
|
|
# Strip kill operands inserted into the asm.
|
|
asm = ASM_SCRUB_KILL_COMMENT_RE.sub('', asm)
|
|
# Strip trailing whitespace.
|
|
asm = ASM_SCRUB_TRAILING_WHITESPACE_RE.sub(r'', asm)
|
|
return asm
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description=__doc__)
|
|
parser.add_argument('-v', '--verbose', action='store_true',
|
|
help='Show verbose output')
|
|
parser.add_argument('--llc-binary', default='llc',
|
|
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('tests', nargs='+')
|
|
args = parser.parse_args()
|
|
|
|
run_line_re = re.compile('^\s*;\s*RUN:\s*(.*)$')
|
|
ir_function_re = re.compile('^\s*define\s+(?:internal\s+)?[^@]*@(\w+)\s*\(')
|
|
asm_function_re = re.compile(
|
|
r'^_?(?P<f>[^:]+):[ \t]*#+[ \t]*@(?P=f)\n[^:]*?'
|
|
r'(?P<body>^##?[ \t]+[^:]+:.*?)\s*'
|
|
r'^\s*(?:[^:\n]+?:\s*\n\s*\.size|\.cfi_endproc|\.globl|\.comm|\.(?:sub)?section)',
|
|
flags=(re.M | re.S))
|
|
check_prefix_re = re.compile('--check-prefix=(\S+)')
|
|
check_re = re.compile(r'^\s*;\s*([^:]+?)(?:-NEXT|-NOT|-DAG|-LABEL)?:')
|
|
|
|
for test in args.tests:
|
|
if args.verbose:
|
|
print >>sys.stderr, 'Scanning for RUN lines in test file: %s' % (test,)
|
|
with open(test) as f:
|
|
test_lines = [l.rstrip() for l in f]
|
|
|
|
run_lines = [m.group(1)
|
|
for m in [run_line_re.match(l) for l in test_lines] if m]
|
|
if args.verbose:
|
|
print >>sys.stderr, 'Found %d RUN lines:' % (len(run_lines),)
|
|
for l in run_lines:
|
|
print >>sys.stderr, ' RUN: ' + l
|
|
|
|
checks = []
|
|
for l in run_lines:
|
|
(llc_cmd, filecheck_cmd) = tuple([cmd.strip() for cmd in l.split('|', 1)])
|
|
if not llc_cmd.startswith('llc '):
|
|
print >>sys.stderr, 'WARNING: Skipping non-llc RUN line: ' + l
|
|
continue
|
|
|
|
if not filecheck_cmd.startswith('FileCheck '):
|
|
print >>sys.stderr, 'WARNING: Skipping non-FileChecked RUN line: ' + l
|
|
continue
|
|
|
|
llc_cmd_args = llc_cmd[len('llc'):].strip()
|
|
llc_cmd_args = llc_cmd_args.replace('< %s', '').replace('%s', '').strip()
|
|
|
|
check_prefixes = [m.group(1)
|
|
for m in check_prefix_re.finditer(filecheck_cmd)]
|
|
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.
|
|
checks.append((check_prefixes, llc_cmd_args))
|
|
|
|
asm = {}
|
|
for prefixes, _ in checks:
|
|
for prefix in prefixes:
|
|
asm.update({prefix: dict()})
|
|
for prefixes, llc_args in checks:
|
|
if args.verbose:
|
|
print >>sys.stderr, 'Extracted LLC cmd: llc ' + llc_args
|
|
print >>sys.stderr, 'Extracted FileCheck prefixes: ' + str(prefixes)
|
|
raw_asm = llc(args, llc_args, test)
|
|
# Build up a dictionary of all the function bodies.
|
|
for m in asm_function_re.finditer(raw_asm):
|
|
if not m:
|
|
continue
|
|
f = m.group('f')
|
|
f_asm = scrub_asm(m.group('body'))
|
|
if f.startswith('stress'):
|
|
# We only use the last line of the asm for stress tests.
|
|
f_asm = '\n'.join(f_asm.splitlines()[-1:])
|
|
if args.verbose:
|
|
print >>sys.stderr, 'Processing asm for function: ' + f
|
|
for l in f_asm.splitlines():
|
|
print >>sys.stderr, ' ' + l
|
|
for prefix in prefixes:
|
|
if f in asm[prefix] and asm[prefix][f] != f_asm:
|
|
if prefix == prefixes[-1]:
|
|
print >>sys.stderr, ('WARNING: Found conflicting asm under the '
|
|
'same prefix!')
|
|
else:
|
|
asm[prefix][f] = None
|
|
continue
|
|
|
|
asm[prefix][f] = f_asm
|
|
|
|
is_in_function = False
|
|
is_in_function_start = False
|
|
prefix_set = set([prefix for prefixes, _ in checks for prefix in prefixes])
|
|
if args.verbose:
|
|
print >>sys.stderr, 'Rewriting FileCheck prefixes: %s' % (prefix_set,)
|
|
fixed_lines = []
|
|
for l in test_lines:
|
|
if is_in_function_start:
|
|
if l.lstrip().startswith(';'):
|
|
m = check_re.match(l)
|
|
if not m or m.group(1) not in prefix_set:
|
|
fixed_lines.append(l)
|
|
continue
|
|
|
|
# Print out the various check lines here
|
|
printed_prefixes = []
|
|
for prefixes, _ in checks:
|
|
for prefix in prefixes:
|
|
if prefix in printed_prefixes:
|
|
break
|
|
if not asm[prefix][name]:
|
|
continue
|
|
if len(printed_prefixes) != 0:
|
|
fixed_lines.append(';')
|
|
printed_prefixes.append(prefix)
|
|
fixed_lines.append('; %s-LABEL: %s:' % (prefix, name))
|
|
asm_lines = asm[prefix][name].splitlines()
|
|
fixed_lines.append('; %s: %s' % (prefix, asm_lines[0]))
|
|
for asm_line in asm_lines[1:]:
|
|
fixed_lines.append('; %s-NEXT: %s' % (prefix, asm_line))
|
|
break
|
|
is_in_function_start = False
|
|
|
|
if is_in_function:
|
|
# Skip any blank comment lines in the IR.
|
|
if l.strip() == ';':
|
|
continue
|
|
# And skip any CHECK lines. We'll build our own.
|
|
m = check_re.match(l)
|
|
if m and m.group(1) in prefix_set:
|
|
continue
|
|
# Collect the remaining lines in the function body and look for the end
|
|
# of the function.
|
|
fixed_lines.append(l)
|
|
if l.strip() == '}':
|
|
is_in_function = False
|
|
continue
|
|
|
|
fixed_lines.append(l)
|
|
|
|
m = ir_function_re.match(l)
|
|
if not m:
|
|
continue
|
|
name = m.group(1)
|
|
if args.function is not None and name != args.function:
|
|
# When filtering on a specific function, skip all others.
|
|
continue
|
|
is_in_function = is_in_function_start = True
|
|
|
|
if args.verbose:
|
|
print>>sys.stderr, 'Writing %d fixed lines to %s...' % (
|
|
len(fixed_lines), test)
|
|
with open(test, 'w') as f:
|
|
f.writelines([l + '\n' for l in fixed_lines])
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|