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import json
import os
import re
import sys
import subprocess
def run_command(command, cwd=None):
p = subprocess.Popen(command, cwd=cwd)
if p.wait() != 0:
print("command `{}` failed...".format(" ".join(command)))
sys.exit(1)
def clone_repository(repo_name, path, repo_url, sub_paths=None):
if os.path.exists(path):
while True:
choice = input("There is already a `{}` folder, do you want to update it? [y/N]".format(path))
if choice == "" or choice.lower() == "n":
print("Skipping repository update.")
return
elif choice.lower() == "y":
print("Updating repository...")
run_command(["git", "pull", "origin"], cwd=path)
return
else:
print("Didn't understand answer...")
print("Cloning {} repository...".format(repo_name))
if sub_paths is None:
run_command(["git", "clone", repo_url, "--depth", "1", path])
else:
run_command(["git", "clone", repo_url, "--filter=tree:0", "--no-checkout", path])
run_command(["git", "sparse-checkout", "init"], cwd=path)
run_command(["git", "sparse-checkout", "set", *sub_paths], cwd=path)
run_command(["git", "checkout"], cwd=path)
def append_intrinsic(array, intrinsic_name, translation):
array.append((intrinsic_name, translation))
def convert_to_string(content):
if content.__class__.__name__ == 'bytes':
return content.decode('utf-8')
return content
def extract_intrinsics_from_llvm(llvm_path, intrinsics):
command = ["llvm-tblgen", "llvm/IR/Intrinsics.td"]
cwd = os.path.join(llvm_path, "llvm/include")
print("=> Running command `{}` from `{}`".format(command, cwd))
p = subprocess.Popen(command, cwd=cwd, stdout=subprocess.PIPE)
output, err = p.communicate()
lines = convert_to_string(output).splitlines()
pos = 0
while pos < len(lines):
line = lines[pos]
if not line.startswith("def "):
pos += 1
continue
intrinsic = line.split(" ")[1].strip()
content = line
while pos < len(lines):
line = lines[pos].split(" // ")[0].strip()
content += line
pos += 1
if line == "}":
break
entries = re.findall('string ClangBuiltinName = "(\\w+)";', content)
current_arch = re.findall('string TargetPrefix = "(\\w+)";', content)
if len(entries) == 1 and len(current_arch) == 1:
current_arch = current_arch[0]
intrinsic = intrinsic.split("_")
if len(intrinsic) < 2 or intrinsic[0] != "int":
continue
intrinsic[0] = "llvm"
intrinsic = ".".join(intrinsic)
if current_arch not in intrinsics:
intrinsics[current_arch] = []
append_intrinsic(intrinsics[current_arch], intrinsic, entries[0])
def append_translation(json_data, p, array):
it = json_data["index"][p]
content = it["docs"].split('`')
if len(content) != 5:
return
append_intrinsic(array, content[1], content[3])
def extract_intrinsics_from_llvmint(llvmint, intrinsics):
archs = [
"AMDGPU",
"aarch64",
"arm",
"cuda",
"hexagon",
"mips",
"nvvm",
"ppc",
"ptx",
"x86",
"xcore",
]
json_file = os.path.join(llvmint, "target/doc/llvmint.json")
# We need to regenerate the documentation!
run_command(
["cargo", "rustdoc", "--", "-Zunstable-options", "--output-format", "json"],
cwd=llvmint,
)
with open(json_file, "r", encoding="utf8") as f:
json_data = json.loads(f.read())
for p in json_data["paths"]:
it = json_data["paths"][p]
if it["crate_id"] != 0:
# This is from an external crate.
continue
if it["kind"] != "function":
# We're only looking for functions.
continue
# if len(it["path"]) == 2:
# # This is a "general" intrinsic, not bound to a specific arch.
# append_translation(json_data, p, general)
# continue
if len(it["path"]) != 3 or it["path"][1] not in archs:
continue
arch = it["path"][1]
if arch not in intrinsics:
intrinsics[arch] = []
append_translation(json_data, p, intrinsics[arch])
def fill_intrinsics(intrinsics, from_intrinsics, all_intrinsics):
for arch in from_intrinsics:
if arch not in intrinsics:
intrinsics[arch] = []
for entry in from_intrinsics[arch]:
if entry[0] in all_intrinsics:
if all_intrinsics[entry[0]] == entry[1]:
# This is a "full" duplicate, both the LLVM instruction and the GCC
# translation are the same.
continue
intrinsics[arch].append((entry[0], entry[1], True))
else:
intrinsics[arch].append((entry[0], entry[1], False))
all_intrinsics[entry[0]] = entry[1]
def update_intrinsics(llvm_path, llvmint, llvmint2):
intrinsics_llvm = {}
intrinsics_llvmint = {}
all_intrinsics = {}
extract_intrinsics_from_llvm(llvm_path, intrinsics_llvm)
extract_intrinsics_from_llvmint(llvmint, intrinsics_llvmint)
extract_intrinsics_from_llvmint(llvmint2, intrinsics_llvmint)
intrinsics = {}
# We give priority to translations from LLVM over the ones from llvmint.
fill_intrinsics(intrinsics, intrinsics_llvm, all_intrinsics)
fill_intrinsics(intrinsics, intrinsics_llvmint, all_intrinsics)
archs = [arch for arch in intrinsics]
archs.sort()
output_file = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
"../src/intrinsic/archs.rs",
)
print("Updating content of `{}`...".format(output_file))
with open(output_file, "w", encoding="utf8") as out:
out.write("// File generated by `rustc_codegen_gcc/tools/generate_intrinsics.py`\n")
out.write("// DO NOT EDIT IT!\n")
out.write("match name {\n")
for arch in archs:
if len(intrinsics[arch]) == 0:
continue
intrinsics[arch].sort(key=lambda x: (x[0], x[2]))
out.write(' // {}\n'.format(arch))
for entry in intrinsics[arch]:
if entry[2] is True: # if it is a duplicate
out.write(' // [DUPLICATE]: "{}" => "{}",\n'.format(entry[0], entry[1]))
elif "_round_mask" in entry[1]:
out.write(' // [INVALID CONVERSION]: "{}" => "{}",\n'.format(entry[0], entry[1]))
else:
out.write(' "{}" => "{}",\n'.format(entry[0], entry[1]))
out.write(' _ => unimplemented!("***** unsupported LLVM intrinsic {}", name),\n')
out.write("}\n")
print("Done!")
def main():
llvm_path = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
"llvm-project",
)
llvmint_path = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
"llvmint",
)
llvmint2_path = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
"llvmint-2",
)
# First, we clone the LLVM repository if it's not already here.
clone_repository(
"llvm-project",
llvm_path,
"https://github.com/llvm/llvm-project",
sub_paths=["llvm/include/llvm/IR", "llvm/include/llvm/CodeGen/"],
)
clone_repository(
"llvmint",
llvmint_path,
"https://github.com/GuillaumeGomez/llvmint",
)
clone_repository(
"llvmint2",
llvmint2_path,
"https://github.com/antoyo/llvmint",
)
update_intrinsics(llvm_path, llvmint_path, llvmint2_path)
if __name__ == "__main__":
sys.exit(main())
|
