minor

.vscode/launch.json

@@ -0,0 +1,16 @@
+{
+    // 使用 IntelliSense 了解相关属性。 
+    // 悬停以查看现有属性的描述。
+    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug",
+            "program": "${workspaceFolder}/bazel-bin/libspu/mpc/shamir/protocol_test",
+            "args": ["--gtest_filter=Shamir/ArithmeticTest.A2P/FM32x3"],
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}

libspu/mpc/shamir/conversion.h

@@ -109,7 +109,7 @@ class MsbA : public UnaryKernel {
   ce::CExpr latency() const override {
     // 1 * carry : log(k) + 1
     // 1 * rotate: 1
-    return Log(ce::K()) + 1 + 1;
+    return ce::Const(3);
   }
 
   ce::CExpr comm() const override {

refresh-compile-commands.py

@@ -0,0 +1,155 @@
+#! /usr/bin/env python3
+
+# Copyright 2023 Ant Group Co., Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import pathlib
+import shutil
+import argparse
+import subprocess
+
+workspace_file_content = """
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+
+git_repository(
+    name = "hedron_compile_commands",
+    commit = "388cc00156cbf53570c416d39875b15f03c0b47f",
+    remote = "https://github.com/hedronvision/bazel-compile-commands-extractor.git",
+)
+
+load("@hedron_compile_commands//:workspace_setup.bzl", "hedron_compile_commands_setup")
+
+hedron_compile_commands_setup()
+"""
+
+def _build_file_content(content, targets):
+    return f"""
+load("@hedron_compile_commands//:refresh_compile_commands.bzl", "refresh_compile_commands")
+
+{content}
+
+refresh_compile_commands(
+    name = "refresh_compile_commands",
+    exclude_external_sources = True,
+    exclude_headers = "external",
+    {targets}
+)
+
+"""
+
+def _run_shell_command_with_live_output(cmd, cwd, shell=True):
+    print(cmd)
+    p = subprocess.Popen(
+        cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=cwd, shell=shell
+    )
+    for line in p.stdout:
+        print(line.decode("utf-8").rstrip())
+    p.wait()
+    status = p.poll()
+    assert status == 0
+
+def _rm(path: str):
+    p = pathlib.Path(path)
+    if os.path.isfile:
+        p.unlink()
+    else:
+        p.rmdir()
+
+
+def _backup_file(path: str):
+    shutil.copy(src=path, dst=f"{path}_bak")
+
+
+def _restore_file(path: str):
+    backup = f"{path}_bak"
+    shutil.copy(src=backup, dst=path)
+    _rm(backup)
+
+
+class Workspace(object):
+    def __init__(self):
+        self.workspace_file = 'WORKSPACE'
+
+        if os.path.isfile('BUILD.bazel'):
+            self.build_file = 'BUILD.bazel'
+        else:
+            self.build_file = 'BUILD'
+
+        self.has_build = os.path.exists(self.build_file)
+
+    def __enter__(self):
+        if self.has_build:
+            _backup_file(self.build_file)
+        else:
+            # Create empty file
+            with open(self.build_file, 'w') as fp:
+                pass
+
+        _backup_file(self.workspace_file)
+        return self
+
+    def __exit__(self, *args):
+        # Restore files
+        _restore_file(self.workspace_file)
+
+        if self.has_build:
+            _restore_file(self.build_file)
+        else:
+            _rm(self.build_file)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="(Re)generate compile commands for Bazel project"
+    )
+
+    parser.add_argument(
+        "--targets",
+        metavar="bazel targets",
+        type=str,
+        help="bazel build targets, comma separated",
+    )
+
+    args = parser.parse_args()
+
+    with Workspace() as ws:
+        # Add hedron_compile_commands to workspace
+        with open(ws.workspace_file, "a+") as wf:
+            wf.write(workspace_file_content)
+
+        # Build targets
+        targets = args.targets
+        t_str = ""
+        if targets:
+            for t in targets.split(','):
+                t_str += f'       "{t}": "",\n'
+
+        if t_str:
+            t_str = f"targets = {{\n{t_str}    }}"
+
+        # Add build rule
+        with open(ws.build_file, "r+") as bf:
+            content = bf.read()
+            bf.seek(0)
+
+            # append load at beginning
+            content = _build_file_content(content, targets=t_str)
+            bf.write(content)
+
+        # Run
+        _run_shell_command_with_live_output(
+            'bazel run -s :refresh_compile_commands', cwd=os.getcwd(), shell=True
+        )
+