diff options
| -rw-r--r-- | .github/workflows/ci.yml | 2 | ||||
| -rw-r--r-- | src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile | 2 | ||||
| -rw-r--r-- | src/ci/github-actions/ci.yml | 2 | ||||
| -rw-r--r-- | src/ci/stage-build.py | 663 |
4 files changed, 666 insertions, 3 deletions
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 82048f800d0..04a50f1f107 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -439,7 +439,7 @@ jobs: - name: dist-x86_64-msvc env: RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-msvc --host=x86_64-pc-windows-msvc --target=x86_64-pc-windows-msvc --enable-full-tools --enable-profiler --set rust.lto=thin" - SCRIPT: PGO_HOST=x86_64-pc-windows-msvc src/ci/pgo.sh python x.py dist bootstrap --include-default-paths + SCRIPT: PGO_HOST=x86_64-pc-windows-msvc python src/ci/stage-build.py python x.py dist bootstrap --include-default-paths DIST_REQUIRE_ALL_TOOLS: 1 os: windows-latest-xl - name: dist-i686-msvc diff --git a/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile b/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile index 6bdc88e18f5..5feba4e0605 100644 --- a/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile +++ b/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile @@ -81,7 +81,7 @@ ENV RUST_CONFIGURE_ARGS \ --set rust.jemalloc \ --set rust.use-lld=true \ --set rust.lto=thin -ENV SCRIPT ../src/ci/pgo.sh python3 ../x.py dist \ +ENV SCRIPT python3 ../src/ci/stage-build.py python3 ../x.py dist \ --host $HOSTS --target $HOSTS \ --include-default-paths \ build-manifest bootstrap diff --git a/src/ci/github-actions/ci.yml b/src/ci/github-actions/ci.yml index d2a9264c84a..8d86590777b 100644 --- a/src/ci/github-actions/ci.yml +++ b/src/ci/github-actions/ci.yml @@ -676,7 +676,7 @@ jobs: --enable-full-tools --enable-profiler --set rust.lto=thin - SCRIPT: PGO_HOST=x86_64-pc-windows-msvc src/ci/pgo.sh python x.py dist bootstrap --include-default-paths + SCRIPT: PGO_HOST=x86_64-pc-windows-msvc python src/ci/stage-build.py python x.py dist bootstrap --include-default-paths DIST_REQUIRE_ALL_TOOLS: 1 <<: *job-windows-xl diff --git a/src/ci/stage-build.py b/src/ci/stage-build.py new file mode 100644 index 00000000000..c373edfcf46 --- /dev/null +++ b/src/ci/stage-build.py @@ -0,0 +1,663 @@ +#!/usr/bin/env python3 +# ignore-tidy-linelength + +# Compatible with Python 3.6+ + +import contextlib +import getpass +import glob +import logging +import os +import pprint +import shutil +import subprocess +import sys +import time +import traceback +import urllib.request +from collections import OrderedDict +from io import StringIO +from pathlib import Path +from typing import Callable, Dict, Iterable, List, Optional, Union + +PGO_HOST = os.environ["PGO_HOST"] + +LOGGER = logging.getLogger("stage-build") + +LLVM_PGO_CRATES = [ + "syn-1.0.89", + "cargo-0.60.0", + "serde-1.0.136", + "ripgrep-13.0.0", + "regex-1.5.5", + "clap-3.1.6", + "hyper-0.14.18" +] + +RUSTC_PGO_CRATES = [ + "externs", + "ctfe-stress-5", + "cargo-0.60.0", + "token-stream-stress", + "match-stress", + "tuple-stress", + "diesel-1.4.8", + "bitmaps-3.1.0" +] + +LLVM_BOLT_CRATES = LLVM_PGO_CRATES + + +class Pipeline: + # Paths + def checkout_path(self) -> Path: + """ + The root checkout, where the source is located. + """ + raise NotImplementedError + + def downloaded_llvm_dir(self) -> Path: + """ + Directory where the host LLVM is located. + """ + raise NotImplementedError + + def build_root(self) -> Path: + """ + The main directory where the build occurs. + """ + raise NotImplementedError + + def build_artifacts(self) -> Path: + return self.build_root() / "build" / PGO_HOST + + def rustc_stage_0(self) -> Path: + return self.build_artifacts() / "stage0" / "bin" / "rustc" + + def cargo_stage_0(self) -> Path: + return self.build_artifacts() / "stage0" / "bin" / "cargo" + + def rustc_stage_2(self) -> Path: + return self.build_artifacts() / "stage2" / "bin" / "rustc" + + def opt_artifacts(self) -> Path: + raise NotImplementedError + + def llvm_profile_dir_root(self) -> Path: + return self.opt_artifacts() / "llvm-pgo" + + def llvm_profile_merged_file(self) -> Path: + return self.opt_artifacts() / "llvm-pgo.profdata" + + def rustc_perf_dir(self) -> Path: + return self.opt_artifacts() / "rustc-perf" + + def build_rustc_perf(self): + raise NotImplementedError() + + def rustc_profile_dir_root(self) -> Path: + return self.opt_artifacts() / "rustc-pgo" + + def rustc_profile_merged_file(self) -> Path: + return self.opt_artifacts() / "rustc-pgo.profdata" + + def rustc_profile_template_path(self) -> Path: + """ + The profile data is written into a single filepath that is being repeatedly merged when each + rustc invocation ends. Empirically, this can result in some profiling data being lost. That's + why we override the profile path to include the PID. This will produce many more profiling + files, but the resulting profile will produce a slightly faster rustc binary. + """ + return self.rustc_profile_dir_root() / "default_%m_%p.profraw" + + def supports_bolt(self) -> bool: + raise NotImplementedError + + def llvm_bolt_profile_merged_file(self) -> Path: + return self.opt_artifacts() / "bolt.profdata" + + +class LinuxPipeline(Pipeline): + def checkout_path(self) -> Path: + return Path("/checkout") + + def downloaded_llvm_dir(self) -> Path: + return Path("/rustroot") + + def build_root(self) -> Path: + return self.checkout_path() / "obj" + + def opt_artifacts(self) -> Path: + return Path("/tmp/tmp-multistage/opt-artifacts") + + def build_rustc_perf(self): + # /tmp/rustc-perf comes from the Dockerfile + shutil.copytree("/tmp/rustc-perf", self.rustc_perf_dir()) + cmd(["chown", "-R", f"{getpass.getuser()}:", self.rustc_perf_dir()]) + + with change_cwd(self.rustc_perf_dir()): + cmd([self.cargo_stage_0(), "build", "-p", "collector"], env=dict( + RUSTC=str(self.rustc_stage_0()), + RUSTC_BOOTSTRAP="1" + )) + + def supports_bolt(self) -> bool: + return True + + +class WindowsPipeline(Pipeline): + def __init__(self): + self.checkout_dir = Path(os.getcwd()) + + def checkout_path(self) -> Path: + return self.checkout_dir + + def downloaded_llvm_dir(self) -> Path: + return self.checkout_path() / "citools" / "clang-rust" + + def build_root(self) -> Path: + return self.checkout_path() + + def opt_artifacts(self) -> Path: + return self.checkout_path() / "opt-artifacts" + + def rustc_stage_0(self) -> Path: + return super().rustc_stage_0().with_suffix(".exe") + + def cargo_stage_0(self) -> Path: + return super().cargo_stage_0().with_suffix(".exe") + + def rustc_stage_2(self) -> Path: + return super().rustc_stage_2().with_suffix(".exe") + + def build_rustc_perf(self): + # rustc-perf version from 2022-07-22 + perf_commit = "3c253134664fdcba862c539d37f0de18557a9a4c" + rustc_perf_zip_path = self.opt_artifacts() / "perf.zip" + + def download_rustc_perf(): + download_file( + f"https://github.com/rust-lang/rustc-perf/archive/{perf_commit}.zip", + rustc_perf_zip_path + ) + with change_cwd(self.opt_artifacts()): + unpack_archive(rustc_perf_zip_path) + move_path(Path(f"rustc-perf-{perf_commit}"), self.rustc_perf_dir()) + delete_file(rustc_perf_zip_path) + + retry_action(download_rustc_perf, "Download rustc-perf") + + with change_cwd(self.rustc_perf_dir()): + cmd([self.cargo_stage_0(), "build", "-p", "collector"], env=dict( + RUSTC=str(self.rustc_stage_0()), + RUSTC_BOOTSTRAP="1" + )) + + def rustc_profile_template_path(self) -> Path: + """ + On Windows, we don't have enough space to use separate files for each rustc invocation. + Therefore, we use a single file for the generated profiles. + """ + return self.rustc_profile_dir_root() / "default_%m.profraw" + + def supports_bolt(self) -> bool: + return False + + +class Timer: + def __init__(self): + # We want this dictionary to be ordered by insertion. + # We use `OrderedDict` for compatibility with older Python versions. + self.stages = OrderedDict() + + @contextlib.contextmanager + def stage(self, name: str): + assert name not in self.stages + + start = time.time() + exc = None + try: + LOGGER.info(f"Stage `{name}` starts") + yield + except BaseException as exception: + exc = exception + raise + finally: + end = time.time() + duration = end - start + self.stages[name] = duration + if exc is None: + LOGGER.info(f"Stage `{name}` ended: OK ({duration:.2f}s)") + else: + LOGGER.info(f"Stage `{name}` ended: FAIL ({duration:.2f}s)") + + def print_stats(self): + total_duration = sum(self.stages.values()) + + # 57 is the width of the whole table + divider = "-" * 57 + + with StringIO() as output: + print(divider, file=output) + for (name, duration) in self.stages.items(): + pct = (duration / total_duration) * 100 + name_str = f"{name}:" + print(f"{name_str:<34} {duration:>12.2f}s ({pct:>5.2f}%)", file=output) + + total_duration_label = "Total duration:" + print(f"{total_duration_label:<34} {total_duration:>12.2f}s", file=output) + print(divider, file=output, end="") + LOGGER.info(f"Timer results\n{output.getvalue()}") + + +@contextlib.contextmanager +def change_cwd(dir: Path): + """ + Temporarily change working directory to `dir`. + """ + cwd = os.getcwd() + LOGGER.debug(f"Changing working dir from `{cwd}` to `{dir}`") + os.chdir(dir) + try: + yield + finally: + LOGGER.debug(f"Reverting working dir to `{cwd}`") + os.chdir(cwd) + + +def move_path(src: Path, dst: Path): + LOGGER.info(f"Moving `{src}` to `{dst}`") + shutil.move(src, dst) + + +def delete_file(path: Path): + LOGGER.info(f"Deleting file `{path}`") + os.unlink(path) + + +def delete_directory(path: Path): + LOGGER.info(f"Deleting directory `{path}`") + shutil.rmtree(path) + + +def unpack_archive(archive: Path): + LOGGER.info(f"Unpacking archive `{archive}`") + shutil.unpack_archive(archive) + + +def download_file(src: str, target: Path): + LOGGER.info(f"Downloading `{src}` into `{target}`") + urllib.request.urlretrieve(src, str(target)) + + +def retry_action(action, name: str, max_fails: int = 5): + LOGGER.info(f"Attempting to perform action `{name}` with retry") + for iteration in range(max_fails): + LOGGER.info(f"Attempt {iteration + 1}/{max_fails}") + try: + action() + return + except: + LOGGER.error(f"Action `{name}` has failed\n{traceback.format_exc()}") + + raise Exception(f"Action `{name}` has failed after {max_fails} attempts") + + +def cmd( + args: List[Union[str, Path]], + env: Optional[Dict[str, str]] = None, + output_path: Optional[Path] = None +): + args = [str(arg) for arg in args] + + environment = os.environ.copy() + + cmd_str = "" + if env is not None: + environment.update(env) + cmd_str += " ".join(f"{k}={v}" for (k, v) in (env or {}).items()) + cmd_str += " " + cmd_str += " ".join(args) + if output_path is not None: + cmd_str += f" > {output_path}" + LOGGER.info(f"Executing `{cmd_str}`") + + if output_path is not None: + with open(output_path, "w") as f: + return subprocess.run( + args, + env=environment, + check=True, + stdout=f + ) + return subprocess.run(args, env=environment, check=True) + + +def run_compiler_benchmarks( + pipeline: Pipeline, + profiles: List[str], + scenarios: List[str], + crates: List[str], + env: Optional[Dict[str, str]] = None +): + env = env if env is not None else {} + + # Compile libcore, both in opt-level=0 and opt-level=3 + with change_cwd(pipeline.build_root()): + cmd([ + pipeline.rustc_stage_2(), + "--edition", "2021", + "--crate-type", "lib", + str(pipeline.checkout_path() / "library/core/src/lib.rs"), + "--out-dir", pipeline.opt_artifacts() + ], env=dict(RUSTC_BOOTSTRAP="1", **env)) + + cmd([ + pipeline.rustc_stage_2(), + "--edition", "2021", + "--crate-type", "lib", + "-Copt-level=3", + str(pipeline.checkout_path() / "library/core/src/lib.rs"), + "--out-dir", pipeline.opt_artifacts() + ], env=dict(RUSTC_BOOTSTRAP="1", **env)) + + # Run rustc-perf benchmarks + # Benchmark using profile_local with eprintln, which essentially just means + # don't actually benchmark -- just make sure we run rustc a bunch of times. + with change_cwd(pipeline.rustc_perf_dir()): + cmd([ + pipeline.cargo_stage_0(), + "run", + "-p", "collector", "--bin", "collector", "--", + "profile_local", "eprintln", + pipeline.rustc_stage_2(), + "--id", "Test", + "--cargo", pipeline.cargo_stage_0(), + "--profiles", ",".join(profiles), + "--scenarios", ",".join(scenarios), + "--include", ",".join(crates) + ], env=dict( + RUST_LOG="collector=debug", + RUSTC=str(pipeline.rustc_stage_0()), + RUSTC_BOOTSTRAP="1", + **env + )) + + +# https://stackoverflow.com/a/31631711/1107768 +def format_bytes(size: int) -> str: + """Return the given bytes as a human friendly KiB, MiB or GiB string.""" + KB = 1024 + MB = KB ** 2 # 1,048,576 + GB = KB ** 3 # 1,073,741,824 + TB = KB ** 4 # 1,099,511,627,776 + + if size < KB: + return f"{size} B" + elif KB <= size < MB: + return f"{size / KB:.2f} KiB" + elif MB <= size < GB: + return f"{size / MB:.2f} MiB" + elif GB <= size < TB: + return f"{size / GB:.2f} GiB" + else: + return str(size) + + +# https://stackoverflow.com/a/63307131/1107768 +def count_files(path: Path) -> int: + return sum(1 for p in path.rglob("*") if p.is_file()) + + +def count_files_with_prefix(path: Path) -> int: + return sum(1 for p in glob.glob(f"{path}*") if Path(p).is_file()) + + +# https://stackoverflow.com/a/55659577/1107768 +def get_path_size(path: Path) -> int: + if path.is_dir(): + return sum(p.stat().st_size for p in path.rglob("*")) + return path.stat().st_size + + +def get_path_prefix_size(path: Path) -> int: + """ + Get size of all files beginning with the prefix `path`. + Alternative to shell `du -sh <path>*`. + """ + return sum(Path(p).stat().st_size for p in glob.glob(f"{path}*")) + + +def get_files(directory: Path, filter: Optional[Callable[[Path], bool]] = None) -> Iterable[Path]: + for file in os.listdir(directory): + path = directory / file + if filter is None or filter(path): + yield path + + +def build_rustc( + pipeline: Pipeline, + args: List[str], + env: Optional[Dict[str, str]] = None +): + arguments = [ + sys.executable, + pipeline.checkout_path() / "x.py", + "build", + "--target", PGO_HOST, + "--host", PGO_HOST, + "--stage", "2", + "library/std" + ] + args + cmd(arguments, env=env) + + +def create_pipeline() -> Pipeline: + if sys.platform == "linux": + return LinuxPipeline() + elif sys.platform in ("cygwin", "win32"): + return WindowsPipeline() + else: + raise Exception(f"Optimized build is not supported for platform {sys.platform}") + + +def gather_llvm_profiles(pipeline: Pipeline): + LOGGER.info("Running benchmarks with PGO instrumented LLVM") + run_compiler_benchmarks( + pipeline, + profiles=["Debug", "Opt"], + scenarios=["Full"], + crates=LLVM_PGO_CRATES + ) + + profile_path = pipeline.llvm_profile_merged_file() + LOGGER.info(f"Merging LLVM PGO profiles to {profile_path}") + cmd([ + pipeline.downloaded_llvm_dir() / "bin" / "llvm-profdata", + "merge", + "-o", profile_path, + pipeline.llvm_profile_dir_root() + ]) + + LOGGER.info("LLVM PGO statistics") + LOGGER.info(f"{profile_path}: {format_bytes(get_path_size(profile_path))}") + LOGGER.info( + f"{pipeline.llvm_profile_dir_root()}: {format_bytes(get_path_size(pipeline.llvm_profile_dir_root()))}") + LOGGER.info(f"Profile file count: {count_files(pipeline.llvm_profile_dir_root())}") + + # We don't need the individual .profraw files now that they have been merged + # into a final .profdata + delete_directory(pipeline.llvm_profile_dir_root()) + + +def gather_rustc_profiles(pipeline: Pipeline): + LOGGER.info("Running benchmarks with PGO instrumented rustc") + + # Here we're profiling the `rustc` frontend, so we also include `Check`. + # The benchmark set includes various stress tests that put the frontend under pressure. + run_compiler_benchmarks( + pipeline, + profiles=["Check", "Debug", "Opt"], + scenarios=["All"], + crates=RUSTC_PGO_CRATES, + env=dict( + LLVM_PROFILE_FILE=str(pipeline.rustc_profile_template_path()) + ) + ) + + profile_path = pipeline.rustc_profile_merged_file() + LOGGER.info(f"Merging Rustc PGO profiles to {profile_path}") + cmd([ + pipeline.build_artifacts() / "llvm" / "bin" / "llvm-profdata", + "merge", + "-o", profile_path, + pipeline.rustc_profile_dir_root() + ]) + + LOGGER.info("Rustc PGO statistics") + LOGGER.info(f"{profile_path}: {format_bytes(get_path_size(profile_path))}") + LOGGER.info( + f"{pipeline.rustc_profile_dir_root()}: {format_bytes(get_path_size(pipeline.rustc_profile_dir_root()))}") + LOGGER.info(f"Profile file count: {count_files(pipeline.rustc_profile_dir_root())}") + + # We don't need the individual .profraw files now that they have been merged + # into a final .profdata + delete_directory(pipeline.rustc_profile_dir_root()) + + +def gather_llvm_bolt_profiles(pipeline: Pipeline): + LOGGER.info("Running benchmarks with BOLT instrumented LLVM") + run_compiler_benchmarks( + pipeline, + profiles=["Check", "Debug", "Opt"], + scenarios=["Full"], + crates=LLVM_BOLT_CRATES + ) + + merged_profile_path = pipeline.llvm_bolt_profile_merged_file() + profile_files_path = Path("/tmp/prof.fdata") + LOGGER.info(f"Merging LLVM BOLT profiles to {merged_profile_path}") + + profile_files = sorted(glob.glob(f"{profile_files_path}*")) + cmd([ + "merge-fdata", + *profile_files, + ], output_path=merged_profile_path) + + LOGGER.info("LLVM BOLT statistics") + LOGGER.info(f"{merged_profile_path}: {format_bytes(get_path_size(merged_profile_path))}") + LOGGER.info( + f"{profile_files_path}: {format_bytes(get_path_prefix_size(profile_files_path))}") + LOGGER.info(f"Profile file count: {count_files_with_prefix(profile_files_path)}") + + +def clear_llvm_files(pipeline: Pipeline): + """ + Rustbuild currently doesn't support rebuilding LLVM when PGO options + change (or any other llvm-related options); so just clear out the relevant + directories ourselves. + """ + LOGGER.info("Clearing LLVM build files") + delete_directory(pipeline.build_artifacts() / "llvm") + delete_directory(pipeline.build_artifacts() / "lld") + + +def print_binary_sizes(pipeline: Pipeline): + bin_dir = pipeline.build_artifacts() / "stage2" / "bin" + binaries = get_files(bin_dir) + + lib_dir = pipeline.build_artifacts() / "stage2" / "lib" + libraries = get_files(lib_dir, lambda p: p.suffix == ".so") + + paths = sorted(binaries) + sorted(libraries) + with StringIO() as output: + for path in paths: + path_str = f"{path.name}:" + print(f"{path_str:<30}{format_bytes(path.stat().st_size):>14}", file=output) + LOGGER.info(f"Rustc binary size\n{output.getvalue()}") + + +def execute_build_pipeline(timer: Timer, pipeline: Pipeline, final_build_args: List[str]): + # Clear and prepare tmp directory + shutil.rmtree(pipeline.opt_artifacts(), ignore_errors=True) + os.makedirs(pipeline.opt_artifacts(), exist_ok=True) + + pipeline.build_rustc_perf() + + # Stage 1: Build rustc + PGO instrumented LLVM + with timer.stage("Build rustc (LLVM PGO)"): + build_rustc(pipeline, args=[ + "--llvm-profile-generate" + ], env=dict( + LLVM_PROFILE_DIR=str(pipeline.llvm_profile_dir_root() / "prof-%p") + )) + + with timer.stage("Gather profiles (LLVM PGO)"): + gather_llvm_profiles(pipeline) + + clear_llvm_files(pipeline) + final_build_args += [ + "--llvm-profile-use", + pipeline.llvm_profile_merged_file() + ] + + # Stage 2: Build PGO instrumented rustc + LLVM + with timer.stage("Build rustc (rustc PGO)"): + build_rustc(pipeline, args=[ + "--rust-profile-generate", + pipeline.rustc_profile_dir_root() + ]) + + with timer.stage("Gather profiles (rustc PGO)"): + gather_rustc_profiles(pipeline) + + clear_llvm_files(pipeline) + final_build_args += [ + "--rust-profile-use", + pipeline.rustc_profile_merged_file() + ] + + # Stage 3: Build rustc + BOLT instrumented LLVM + if pipeline.supports_bolt(): + with timer.stage("Build rustc (LLVM BOLT)"): + build_rustc(pipeline, args=[ + "--llvm-profile-use", + pipeline.llvm_profile_merged_file(), + "--llvm-bolt-profile-generate", + ]) + with timer.stage("Gather profiles (LLVM BOLT)"): + gather_llvm_bolt_profiles(pipeline) + + clear_llvm_files(pipeline) + final_build_args += [ + "--llvm-bolt-profile-use", + pipeline.llvm_bolt_profile_merged_file() + ] + + # Stage 4: Build PGO optimized rustc + PGO/BOLT optimized LLVM + with timer.stage("Final build"): + cmd(final_build_args) + + +if __name__ == "__main__": + logging.basicConfig( + level=logging.DEBUG, + format="%(name)s %(levelname)-4s: %(message)s", + ) + + LOGGER.info(f"Running multi-stage build using Python {sys.version}") + LOGGER.info(f"Environment values\n{pprint.pformat(dict(os.environ), indent=2)}") + + build_args = sys.argv[1:] + + timer = Timer() + pipeline = create_pipeline() + try: + execute_build_pipeline(timer, pipeline, build_args) + except BaseException as e: + LOGGER.error("The multi-stage build has failed") + raise e + finally: + timer.print_stats() + + print_binary_sizes(pipeline) |