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Move NoLlvmMetadataLoader to rustc_trans_traits

This commit is contained in:
bjorn3 2017-09-18 17:37:57 +02:00
parent 44c184382f
commit 9eeaba18bd
7 changed files with 171 additions and 213 deletions
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4
src/Cargo.lock generated
View File

@ -1781,10 +1781,14 @@ dependencies = [
name = "rustc_trans_traits"
version = "0.0.0"
dependencies = [
"ar 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
"flate2 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)",
"owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc 0.0.0",
"rustc_back 0.0.0",
"rustc_incremental 0.0.0",
"rustc_trans_utils 0.0.0",
"syntax 0.0.0",
]
[[package]]

4
src/bootstrap/bin/rustc.rs
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@ -159,10 +159,6 @@ fn main() {
cmd.arg("-C").arg("panic=abort");
}
if env::var("RUSTC_LLVM_ENABLED") == Ok("0".to_string()) && stage != "0" {
cmd.arg("-Zno-trans");
}
// Set various options from config.toml to configure how we're building
// code.
if env::var("RUSTC_DEBUGINFO") == Ok("true".to_string()) {

3
src/bootstrap/builder.rs
View File

@ -531,6 +531,9 @@ impl<'a> Builder<'a> {
// For other crates, however, we know that we've already got a standard
// library up and running, so we can use the normal compiler to compile
// build scripts in that situation.
//
// If LLVM support is disabled we need to use the snapshot compiler to compile
// build scripts, as the new compiler doesnt support executables.
if mode == Mode::Libstd || !self.build.config.llvm_enabled {
cargo.env("RUSTC_SNAPSHOT", &self.initial_rustc)
.env("RUSTC_SNAPSHOT_LIBDIR", self.rustc_snapshot_libdir());

67
src/librustc_driver/driver.rs
View File

@ -8,8 +8,6 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![cfg_attr(not(feature="llvm"), allow(dead_code))]
use rustc::dep_graph::DepGraph;
use rustc::hir::{self, map as hir_map};
use rustc::hir::lowering::lower_crate;
@ -96,10 +94,6 @@ pub fn compile_input(sess: &Session,
}
if cfg!(not(feature="llvm")) {
if !sess.opts.debugging_opts.no_trans && sess.opts.output_types.should_trans() {
sess.err("LLVM is not supported by this rustc. Please use -Z no-trans to compile")
}
for cty in sess.opts.crate_types.iter() {
match *cty {
CrateType::CrateTypeRlib | CrateType::CrateTypeDylib |
@ -269,48 +263,36 @@ pub fn compile_input(sess: &Session,
})??
};
if cfg!(not(feature="llvm")) {
let (_, _) = (outputs, trans);
if sess.opts.crate_types.contains(&CrateType::CrateTypeRlib)
|| sess.opts.crate_types.contains(&CrateType::CrateTypeDylib) {
return Ok(())
}
sess.fatal("LLVM is not supported by this rustc");
if sess.opts.debugging_opts.print_type_sizes {
sess.code_stats.borrow().print_type_sizes();
}
let (phase5_result, trans) = phase_5_run_llvm_passes::<DefaultTransCrate>(sess, &dep_graph, trans);
controller_entry_point!(after_llvm,
sess,
CompileState::state_after_llvm(input, sess, outdir, output, &trans),
phase5_result);
phase5_result?;
phase_6_link_output::<DefaultTransCrate>(sess, &trans, &outputs);
// Now that we won't touch anything in the incremental compilation directory
// any more, we can finalize it (which involves renaming it)
#[cfg(feature="llvm")]
{
if sess.opts.debugging_opts.print_type_sizes {
sess.code_stats.borrow().print_type_sizes();
}
rustc_incremental::finalize_session_directory(sess, trans.link.crate_hash);
let (phase5_result, trans) = phase_5_run_llvm_passes::<DefaultTransCrate>(sess, &dep_graph, trans);
controller_entry_point!(after_llvm,
sess,
CompileState::state_after_llvm(input, sess, outdir, output, &trans),
phase5_result);
phase5_result?;
phase_6_link_output::<DefaultTransCrate>(sess, &trans, &outputs);
// Now that we won't touch anything in the incremental compilation directory
// any more, we can finalize it (which involves renaming it)
rustc_incremental::finalize_session_directory(sess, trans.link.crate_hash);
if sess.opts.debugging_opts.perf_stats {
sess.print_perf_stats();
}
controller_entry_point!(
compilation_done,
sess,
CompileState::state_when_compilation_done(input, sess, outdir, output),
Ok(())
);
if sess.opts.debugging_opts.perf_stats {
sess.print_perf_stats();
}
controller_entry_point!(
compilation_done,
sess,
CompileState::state_when_compilation_done(input, sess, outdir, output),
Ok(())
);
Ok(())
}
@ -1171,7 +1153,6 @@ pub fn phase_5_run_llvm_passes<T: TransCrate>(sess: &Session,
/// Run the linker on any artifacts that resulted from the LLVM run.
/// This should produce either a finished executable or library.
#[cfg(feature="llvm")]
pub fn phase_6_link_output<T: TransCrate>(sess: &Session,
trans: &<T as TransCrate>::TranslatedCrate,
outputs: &OutputFilenames) {

166
src/librustc_driver/lib.rs
View File

@ -25,8 +25,6 @@
#![feature(rustc_diagnostic_macros)]
#![feature(set_stdio)]
extern crate ar;
extern crate flate2;
extern crate arena;
extern crate getopts;
extern crate graphviz;
@ -155,173 +153,17 @@ pub fn run<F>(run_compiler: F) -> isize
}
#[cfg(not(feature="llvm"))]
pub use trans_metadata_only::MetadataOnlyTransCrate as DefaultTransCrate;
pub use rustc_trans_traits::MetadataOnlyTransCrate as DefaultTransCrate;
#[cfg(feature="llvm")]
pub use rustc_trans::LlvmTransCrate as DefaultTransCrate;
mod no_llvm_metadata_loader {
extern crate owning_ref;
use rustc::middle::cstore::MetadataLoader as MetadataLoaderTrait;
use rustc_back::target::Target;
use std::io;
use std::fs::File;
use std::path::Path;
use ar::Archive;
use self::owning_ref::{OwningRef, ErasedBoxRef};
pub struct NoLlvmMetadataLoader;
impl MetadataLoaderTrait for NoLlvmMetadataLoader {
fn get_rlib_metadata(
&self,
_: &Target,
filename: &Path
) -> Result<ErasedBoxRef<[u8]>, String> {
let file = File::open(filename).map_err(|e| {
format!("metadata file open err: {:?}", e)
})?;
let mut archive = Archive::new(file);
while let Some(entry_result) = archive.next_entry() {
let mut entry = entry_result.map_err(|e| {
format!("metadata section read err: {:?}", e)
})?;
if entry.header().identifier() == "rust.metadata.bin" {
let mut buf = Vec::new();
io::copy(&mut entry, &mut buf).unwrap();
let buf: OwningRef<Vec<u8>, [u8]> = OwningRef::new(buf).into();
return Ok(buf.map_owner_box().erase_owner());
}
}
Err("Couldnt find metadata section".to_string())
}
fn get_dylib_metadata(&self,
_target: &Target,
_filename: &Path)
-> Result<ErasedBoxRef<[u8]>, String> {
// FIXME: Support reading dylibs from llvm enabled rustc
self.get_rlib_metadata(_target, _filename)
}
}
}
mod trans_metadata_only {
use std::io::prelude::*;
use std::io::Cursor;
use std::fs::File;
use ar::{Builder, Header};
use flate2::Compression;
use flate2::write::DeflateEncoder;
use syntax::symbol::Symbol;
use rustc::hir::def_id::LOCAL_CRATE;
use rustc::session::Session;
use rustc::session::config::{OutputFilenames, CrateType};
use rustc::ty::{TyCtxt, CrateAnalysis};
use rustc::ty::maps::Providers;
use rustc::middle::cstore::{MetadataLoader, EncodedMetadata};
use rustc::dep_graph::DepGraph;
use rustc_incremental::IncrementalHashesMap;
use rustc_trans_utils::find_exported_symbols;
use rustc_trans_utils::link::{out_filename, build_link_meta};
use rustc_trans_traits::TransCrate;
#[allow(dead_code)]
pub struct MetadataOnlyTransCrate;
pub struct OngoingCrateTranslation {
metadata: EncodedMetadata,
metadata_version: Vec<u8>,
crate_name: Symbol,
}
pub struct TranslatedCrate(OngoingCrateTranslation);
impl MetadataOnlyTransCrate {
#[allow(dead_code)]
pub fn new(/*_sess: &Session*/) -> Self {
MetadataOnlyTransCrate
}
}
impl TransCrate for MetadataOnlyTransCrate {
type MetadataLoader = ::no_llvm_metadata_loader::NoLlvmMetadataLoader;
type OngoingCrateTranslation = OngoingCrateTranslation;
type TranslatedCrate = TranslatedCrate;
fn metadata_loader() -> Box<MetadataLoader> {
box ::no_llvm_metadata_loader::NoLlvmMetadataLoader
}
fn provide(_providers: &mut Providers) {}
fn trans_crate<'a, 'tcx>(
tcx: TyCtxt<'a, 'tcx, 'tcx>,
analysis: CrateAnalysis,
incr_hashes_map: IncrementalHashesMap,
_output_filenames: &OutputFilenames
) -> Self::OngoingCrateTranslation {
let link_meta = build_link_meta(&incr_hashes_map);
let exported_symbols = find_exported_symbols(tcx, &analysis.reachable);
let (metadata, _hashes) = tcx.encode_metadata(&link_meta, &exported_symbols);
OngoingCrateTranslation {
metadata: metadata,
metadata_version: tcx.metadata_encoding_version().to_vec(),
crate_name: tcx.crate_name(LOCAL_CRATE),
}
}
fn join_trans(
trans: Self::OngoingCrateTranslation,
_sess: &Session,
_dep_graph: &DepGraph,
) -> Self::TranslatedCrate {
TranslatedCrate(trans)
}
fn link_binary(sess: &Session,
trans: &Self::TranslatedCrate,
outputs: &OutputFilenames) {
for &crate_type in sess.opts.crate_types.iter() {
if crate_type != CrateType::CrateTypeRlib &&
crate_type != CrateType::CrateTypeDylib {
continue;
}
let output_name =
out_filename(sess, crate_type, &outputs, &trans.0.crate_name.as_str());
let mut compressed = trans.0.metadata_version.clone();
let metadata = if crate_type == CrateType::CrateTypeDylib {
DeflateEncoder::new(&mut compressed, Compression::Fast)
.write_all(&trans.0.metadata.raw_data).unwrap();
&compressed
} else {
&trans.0.metadata.raw_data
};
let mut builder = Builder::new(File::create(&output_name).unwrap());
let header = Header::new(
"rust.metadata.bin".to_string(),
metadata.len() as u64
);
builder
.append(&header, Cursor::new(metadata))
.unwrap();
}
}
fn dump_incremental_data(_trans: &Self::TranslatedCrate) {}
}
}
#[cfg(not(feature="llvm"))]
mod rustc_trans {
use syntax_pos::symbol::Symbol;
use rustc::session::Session;
use rustc::session::config::PrintRequest;
pub use trans_metadata_only::MetadataOnlyTransCrate as LlvmTransCrate;
pub use rustc_trans_traits::MetadataOnlyTransCrate as LlvmTransCrate;
pub use rustc_trans_traits::TranslatedCrate as CrateTranslation;
pub fn init(_sess: &Session) {}
pub fn enable_llvm_debug() {}
@ -330,8 +172,6 @@ mod rustc_trans {
pub fn print(_req: PrintRequest, _sess: &Session) {}
pub fn target_features(_sess: &Session) -> Vec<Symbol> { vec![] }
pub struct CrateTranslation(());
pub mod back {
pub mod write {
pub const RELOC_MODEL_ARGS: [(&'static str, ()); 0] = [];

4
src/librustc_trans_traits/Cargo.toml
View File

@ -10,8 +10,12 @@ crate-type = ["dylib"]
test = false
[dependencies]
ar = "0.3.0"
flate2 = "0.2"
owning_ref = "0.3.3"
syntax = { path = "../libsyntax" }
rustc = { path = "../librustc" }
rustc_back = { path = "../librustc_back" }
rustc_incremental = { path = "../librustc_incremental" }
rustc_trans_utils = { path = "../librustc_trans_utils" }

136
src/librustc_trans_traits/lib.rs
View File

@ -21,24 +21,40 @@
#![feature(box_syntax)]
extern crate ar;
extern crate flate2;
extern crate owning_ref;
extern crate syntax;
#[macro_use]
extern crate rustc;
extern crate rustc_back;
extern crate rustc_incremental;
extern crate rustc_trans_utils;
use std::io::prelude::*;
use std::io::{self, Cursor};
use std::fs::File;
use std::path::Path;
use owning_ref::ErasedBoxRef;
use owning_ref::{ErasedBoxRef, OwningRef};
use ar::{Archive, Builder, Header};
use flate2::Compression;
use flate2::write::DeflateEncoder;
use syntax::symbol::Symbol;
use rustc::hir::def_id::LOCAL_CRATE;
use rustc::session::Session;
use rustc::session::config::OutputFilenames;
use rustc::ty::{TyCtxt, CrateAnalysis};
use rustc::session::config::{CrateType, OutputFilenames};
use rustc::ty::{CrateAnalysis, TyCtxt};
use rustc::ty::maps::Providers;
use rustc::middle::cstore::EncodedMetadata;
use rustc::middle::cstore::MetadataLoader as MetadataLoaderTrait;
use rustc::dep_graph::DepGraph;
use rustc_back::target::Target;
use rustc_incremental::IncrementalHashesMap;
use rustc_trans_utils::find_exported_symbols;
use rustc_trans_utils::link::{build_link_meta, out_filename};
pub trait TransCrate {
type MetadataLoader: MetadataLoaderTrait;
@ -114,3 +130,117 @@ impl MetadataLoaderTrait for DummyMetadataLoader {
bug!("DummyMetadataLoader::get_dylib_metadata");
}
}
pub struct NoLlvmMetadataLoader;
impl MetadataLoaderTrait for NoLlvmMetadataLoader {
fn get_rlib_metadata(&self, _: &Target, filename: &Path) -> Result<ErasedBoxRef<[u8]>, String> {
let file = File::open(filename)
.map_err(|e| format!("metadata file open err: {:?}", e))?;
let mut archive = Archive::new(file);
while let Some(entry_result) = archive.next_entry() {
let mut entry = entry_result
.map_err(|e| format!("metadata section read err: {:?}", e))?;
if entry.header().identifier() == "rust.metadata.bin" {
let mut buf = Vec::new();
io::copy(&mut entry, &mut buf).unwrap();
let buf: OwningRef<Vec<u8>, [u8]> = OwningRef::new(buf).into();
return Ok(buf.map_owner_box().erase_owner());
}
}
Err("Couldnt find metadata section".to_string())
}
fn get_dylib_metadata(
&self,
_target: &Target,
_filename: &Path,
) -> Result<ErasedBoxRef<[u8]>, String> {
// FIXME: Support reading dylibs from llvm enabled rustc
self.get_rlib_metadata(_target, _filename)
}
}
#[allow(dead_code)]
pub struct MetadataOnlyTransCrate;
pub struct OngoingCrateTranslation {
metadata: EncodedMetadata,
metadata_version: Vec<u8>,
crate_name: Symbol,
}
pub struct TranslatedCrate(OngoingCrateTranslation);
impl MetadataOnlyTransCrate {
#[allow(dead_code)]
pub fn new() -> Self {
MetadataOnlyTransCrate
}
}
impl TransCrate for MetadataOnlyTransCrate {
type MetadataLoader = NoLlvmMetadataLoader;
type OngoingCrateTranslation = OngoingCrateTranslation;
type TranslatedCrate = TranslatedCrate;
fn metadata_loader() -> Box<MetadataLoaderTrait> {
box NoLlvmMetadataLoader
}
fn provide(_providers: &mut Providers) {}
fn trans_crate<'a, 'tcx>(
tcx: TyCtxt<'a, 'tcx, 'tcx>,
analysis: CrateAnalysis,
incr_hashes_map: IncrementalHashesMap,
_output_filenames: &OutputFilenames,
) -> Self::OngoingCrateTranslation {
let link_meta = build_link_meta(&incr_hashes_map);
let exported_symbols = find_exported_symbols(tcx, &analysis.reachable);
let (metadata, _hashes) = tcx.encode_metadata(&link_meta, &exported_symbols);
OngoingCrateTranslation {
metadata: metadata,
metadata_version: tcx.metadata_encoding_version().to_vec(),
crate_name: tcx.crate_name(LOCAL_CRATE),
}
}
fn join_trans(
trans: Self::OngoingCrateTranslation,
_sess: &Session,
_dep_graph: &DepGraph,
) -> Self::TranslatedCrate {
TranslatedCrate(trans)
}
fn link_binary(sess: &Session, trans: &Self::TranslatedCrate, outputs: &OutputFilenames) {
for &crate_type in sess.opts.crate_types.iter() {
if crate_type != CrateType::CrateTypeRlib && crate_type != CrateType::CrateTypeDylib {
continue;
}
let output_name =
out_filename(sess, crate_type, &outputs, &trans.0.crate_name.as_str());
let mut compressed = trans.0.metadata_version.clone();
let metadata = if crate_type == CrateType::CrateTypeDylib {
DeflateEncoder::new(&mut compressed, Compression::Fast)
.write_all(&trans.0.metadata.raw_data)
.unwrap();
&compressed
} else {
&trans.0.metadata.raw_data
};
let mut builder = Builder::new(File::create(&output_name).unwrap());
let header = Header::new("rust.metadata.bin".to_string(), metadata.len() as u64);
builder.append(&header, Cursor::new(metadata)).unwrap();
}
if !sess.opts.crate_types.contains(&CrateType::CrateTypeRlib)
&& !sess.opts.crate_types.contains(&CrateType::CrateTypeDylib) {
sess.fatal("Executables are not supported by the metadata-only backend.");
}
}
fn dump_incremental_data(_trans: &Self::TranslatedCrate) {}
}