blob: e84b1fa10e581221c826192603da4e713afea1e2 [file] [log] [blame]
#!/usr/bin/env python
# Check HEX -- a stupid filter that allows hexadecimal literals to be checked
# for in LLVM IR FileCheck tests. It works by replacing occurrences of
# strings matching the regex /< (i[0-9]+) \s+ (0x[0-9A-Fa-f]+) >/x with the
# decimal literal equivalent that would really appear in printed LLVM IR.
from __future__ import print_function
import re
import sys
hex = re.compile(r"""<(i([0-9]+)\s+)0x([0-9A-Fa-f_]+)>""")
def hexReplace(match):
# Integer type is match group 1
ty =
# Integer bit width is match group 2
bits = int(
# Hex value is match group 3
value = int("_", ""), base=16)
# LLVM prints the decimal value as if it's two's-complement signed in
# the given bitwidth, so the printed value will be negative if
# greater than 2^(bits - 1)
if value >= (1 << (bits - 1)):
value -= 1 << bits
return ty + str(value)
for line in sys.stdin:
print(re.sub(hex, hexReplace, line), end="")