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