Rollup of 9 pull requests

.azure-pipelines/steps/install-clang.yml

@@ -26,12 +26,18 @@ steps:
 #
 # Original downloaded here came from
 # http://releases.llvm.org/7.0.0/LLVM-7.0.0-win64.exe
-- script: |
-    powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf %TEMP%\LLVM-7.0.0-win64.exe https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/LLVM-7.0.0-win64.exe"
-    set CLANG_DIR=%CD%\citools\clang-rust
-    %TEMP%\LLVM-7.0.0-win64.exe /S /NCRC /D=%CLANG_DIR%
-    set RUST_CONFIGURE_ARGS=%RUST_CONFIGURE_ARGS% --set llvm.clang-cl=%CLANG_DIR%\bin\clang-cl.exe
-    echo ##vso[task.setvariable variable=RUST_CONFIGURE_ARGS]%RUST_CONFIGURE_ARGS%
+# That installer was run through `wine` on Linux and then the resulting
+# installation directory (found in `$HOME/.wine/drive_c/Program Files/LLVM`) was
+# packaged up into a tarball. We've had issues otherwise that the installer will
+# randomly hang, provide not a lot of useful information, pollute global state,
+# etc. In general the tarball is just more confined and easier to deal with when
+# working with various CI environments.
+- bash: |
+    set -e
+    mkdir -p citools
+    cd citools
+    curl -f https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/LLVM-7.0.0-win64.tar.gz | tar xzf -
+    echo "##vso[task.setvariable variable=RUST_CONFIGURE_ARGS]$RUST_CONFIGURE_ARGS --set llvm.clang-cl=`pwd`/clang-rust/bin/clang-cl.exe"
   condition: and(succeeded(), eq(variables['Agent.OS'], 'Windows_NT'), eq(variables['MINGW_URL'],''))
   displayName: Install clang (Windows)
 

src/bootstrap/configure.py

@@ -76,11 +76,11 @@ def v(*args):
 o("llvm-assertions", "llvm.assertions", "build LLVM with assertions")
 o("debug-assertions", "rust.debug-assertions", "build with debugging assertions")
 o("llvm-release-debuginfo", "llvm.release-debuginfo", "build LLVM with debugger metadata")
-o("debuginfo-level", "rust.debuginfo-level", "debuginfo level for Rust code")
-o("debuginfo-level-rustc", "rust.debuginfo-level-rustc", "debuginfo level for the compiler")
-o("debuginfo-level-std", "rust.debuginfo-level-std", "debuginfo level for the standard library")
-o("debuginfo-level-tools", "rust.debuginfo-level-tools", "debuginfo level for the tools")
-o("debuginfo-level-tests", "rust.debuginfo-level-tests", "debuginfo level for the test suites run with compiletest")
+v("debuginfo-level", "rust.debuginfo-level", "debuginfo level for Rust code")
+v("debuginfo-level-rustc", "rust.debuginfo-level-rustc", "debuginfo level for the compiler")
+v("debuginfo-level-std", "rust.debuginfo-level-std", "debuginfo level for the standard library")
+v("debuginfo-level-tools", "rust.debuginfo-level-tools", "debuginfo level for the tools")
+v("debuginfo-level-tests", "rust.debuginfo-level-tests", "debuginfo level for the test suites run with compiletest")
 v("save-toolstates", "rust.save-toolstates", "save build and test status of external tools into this file")
 
 v("prefix", "install.prefix", "set installation prefix")

src/ci/docker/dist-various-1/Dockerfile

@@ -112,6 +112,7 @@ ENV TARGETS=$TARGETS,thumbv7em-none-eabihf
 ENV TARGETS=$TARGETS,thumbv8m.base-none-eabi
 ENV TARGETS=$TARGETS,thumbv8m.main-none-eabi
 ENV TARGETS=$TARGETS,thumbv8m.main-none-eabihf
+ENV TARGETS=$TARGETS,riscv32i-unknown-none-elf
 ENV TARGETS=$TARGETS,riscv32imc-unknown-none-elf
 ENV TARGETS=$TARGETS,riscv32imac-unknown-none-elf
 ENV TARGETS=$TARGETS,riscv64imac-unknown-none-elf

src/ci/run.sh

@@ -50,7 +50,7 @@ if [ "$DEPLOY$DEPLOY_ALT" = "1" ]; then
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --release-channel=$RUST_RELEASE_CHANNEL"
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --enable-llvm-static-stdcpp"
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.remap-debuginfo"
-  RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --set rust.debuginfo-level-std=1"
+  RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --debuginfo-level-std=1"
 
   if [ "$NO_LLVM_ASSERTIONS" = "1" ]; then
     RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --disable-llvm-assertions"

src/libcore/lib.rs

@@ -120,6 +120,7 @@
 #![feature(cmpxchg16b_target_feature)]
 #![feature(rtm_target_feature)]
 #![feature(f16c_target_feature)]
+#![feature(hexagon_target_feature)]
 #![feature(const_slice_len)]
 #![feature(const_str_as_bytes)]
 #![feature(const_str_len)]

src/libpanic_unwind/gcc.rs

@@ -126,6 +126,9 @@ const UNWIND_DATA_REG: (i32, i32) = (6, 7); // R6, R7
 #[cfg(target_arch = "sparc64")]
 const UNWIND_DATA_REG: (i32, i32) = (24, 25); // I0, I1
 
+#[cfg(target_arch = "hexagon")]
+const UNWIND_DATA_REG: (i32, i32) = (0, 1); // R0, R1
+
 // The following code is based on GCC's C and C++ personality routines.  For reference, see:
 // https://github.com/gcc-mirror/gcc/blob/master/libstdc++-v3/libsupc++/eh_personality.cc
 // https://github.com/gcc-mirror/gcc/blob/trunk/libgcc/unwind-c.c

src/librustc/Cargo.toml

@@ -27,7 +27,7 @@ rustc_target = { path = "../librustc_target" }
 rustc_macros = { path = "../librustc_macros" }
 rustc_data_structures = { path = "../librustc_data_structures" }
 errors = { path = "../librustc_errors", package = "rustc_errors" }
-serialize = { path = "../libserialize" }
+rustc_serialize = { path = "../libserialize", package = "serialize" }
 syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }
 backtrace = "0.3.3"

src/librustc/hir/def_id.rs

@@ -1,7 +1,6 @@
 use crate::ty::{self, TyCtxt};
 use crate::hir::map::definitions::FIRST_FREE_DEF_INDEX;
 use rustc_data_structures::indexed_vec::Idx;
-use serialize;
 use std::fmt;
 use std::u32;
 
@@ -93,8 +92,8 @@ impl fmt::Display for CrateNum {
     }
 }
 
-impl serialize::UseSpecializedEncodable for CrateNum {}
-impl serialize::UseSpecializedDecodable for CrateNum {}
+impl rustc_serialize::UseSpecializedEncodable for CrateNum {}
+impl rustc_serialize::UseSpecializedDecodable for CrateNum {}
 
 newtype_index! {
     /// A DefIndex is an index into the hir-map for a crate, identifying a
@@ -134,8 +133,8 @@ impl DefIndex {
     }
 }
 
-impl serialize::UseSpecializedEncodable for DefIndex {}
-impl serialize::UseSpecializedDecodable for DefIndex {}
+impl rustc_serialize::UseSpecializedEncodable for DefIndex {}
+impl rustc_serialize::UseSpecializedDecodable for DefIndex {}
 
 /// A `DefId` identifies a particular *definition*, by combining a crate
 /// index and a def index.
@@ -186,8 +185,8 @@ impl DefId {
     }
 }
 
-impl serialize::UseSpecializedEncodable for DefId {}
-impl serialize::UseSpecializedDecodable for DefId {}
+impl rustc_serialize::UseSpecializedEncodable for DefId {}
+impl rustc_serialize::UseSpecializedDecodable for DefId {}
 
 /// A LocalDefId is equivalent to a DefId with `krate == LOCAL_CRATE`. Since
 /// we encode this information in the type, we can ensure at compile time that
@@ -220,5 +219,5 @@ impl fmt::Debug for LocalDefId {
     }
 }
 
-impl serialize::UseSpecializedEncodable for LocalDefId {}
-impl serialize::UseSpecializedDecodable for LocalDefId {}
+impl rustc_serialize::UseSpecializedEncodable for LocalDefId {}
+impl rustc_serialize::UseSpecializedDecodable for LocalDefId {}

src/librustc/hir/mod.rs

@@ -34,7 +34,7 @@ use rustc_data_structures::sync::{par_for_each_in, Send, Sync};
 use rustc_data_structures::thin_vec::ThinVec;
 use rustc_macros::HashStable;
 
-use serialize::{self, Encoder, Encodable, Decoder, Decodable};
+use rustc_serialize::{self, Encoder, Encodable, Decoder, Decodable};
 use std::collections::{BTreeSet, BTreeMap};
 use std::fmt;
 use smallvec::SmallVec;
@@ -92,7 +92,7 @@ impl HirId {
     }
 }
 
-impl serialize::UseSpecializedEncodable for HirId {
+impl rustc_serialize::UseSpecializedEncodable for HirId {
     fn default_encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
         let HirId {
             owner,
@@ -104,7 +104,7 @@ impl serialize::UseSpecializedEncodable for HirId {
     }
 }
 
-impl serialize::UseSpecializedDecodable for HirId {
+impl rustc_serialize::UseSpecializedDecodable for HirId {
     fn default_decode<D: Decoder>(d: &mut D) -> Result<HirId, D::Error> {
         let owner = DefIndex::decode(d)?;
         let local_id = ItemLocalId::decode(d)?;

src/librustc/hir/ptr.rs

@@ -7,7 +7,7 @@ use std::iter::FromIterator;
 use std::ops::Deref;
 use std::{slice, vec};
 
-use serialize::{Encodable, Decodable, Encoder, Decoder};
+use rustc_serialize::{Encodable, Decodable, Encoder, Decoder};
 
 use rustc_data_structures::stable_hasher::{StableHasher, StableHasherResult,
                                            HashStable};

src/librustc/infer/canonical/mod.rs

@@ -27,7 +27,7 @@ use crate::infer::region_constraints::MemberConstraint;
 use crate::mir::interpret::ConstValue;
 use rustc_data_structures::indexed_vec::IndexVec;
 use rustc_macros::HashStable;
-use serialize::UseSpecializedDecodable;
+use rustc_serialize::UseSpecializedDecodable;
 use smallvec::SmallVec;
 use std::ops::Index;
 use syntax::source_map::Span;

src/librustc/lib.rs

@@ -75,16 +75,8 @@ extern crate getopts;
 extern crate libc;
 #[macro_use] extern crate rustc_macros;
 #[macro_use] extern crate rustc_data_structures;
-
 #[macro_use] extern crate log;
 #[macro_use] extern crate syntax;
-
-// FIXME: This import is used by deriving `RustcDecodable` and `RustcEncodable`. Removing this
-// results in a bunch of "failed to resolve" errors. Hopefully, the compiler moves to serde or
-// something, and we can get rid of this.
-#[allow(rust_2018_idioms)]
-extern crate serialize as rustc_serialize;
-
 #[macro_use] extern crate smallvec;
 
 // Use the test crate here so we depend on getopts through it. This allow tools to link to both

src/librustc/lint/context.rs

@@ -23,7 +23,7 @@ use crate::lint::{LintArray, Level, Lint, LintId, LintPass, LintBuffer};
 use crate::lint::builtin::BuiltinLintDiagnostics;
 use crate::lint::levels::{LintLevelSets, LintLevelsBuilder};
 use crate::middle::privacy::AccessLevels;
-use crate::rustc_serialize::{Decoder, Decodable, Encoder, Encodable};
+use rustc_serialize::{Decoder, Decodable, Encoder, Encodable};
 use crate::session::{config, early_error, Session};
 use crate::ty::{self, print::Printer, subst::Kind, TyCtxt, Ty};
 use crate::ty::layout::{LayoutError, LayoutOf, TyLayout};

src/librustc/mir/cache.rs

@@ -1,27 +1,25 @@
 use rustc_data_structures::indexed_vec::IndexVec;
 use rustc_data_structures::sync::{RwLock, MappedReadGuard, ReadGuard};
-use rustc_data_structures::stable_hasher::{HashStable, StableHasher,
-                                           StableHasherResult};
+use rustc_data_structures::stable_hasher::{HashStable, StableHasher, StableHasherResult};
+use rustc_serialize::{Encodable, Encoder, Decodable, Decoder};
 use crate::ich::StableHashingContext;
 use crate::mir::{Body, BasicBlock};
 
-use crate::rustc_serialize as serialize;
-
 #[derive(Clone, Debug)]
 pub struct Cache {
     predecessors: RwLock<Option<IndexVec<BasicBlock, Vec<BasicBlock>>>>
 }
 
 
-impl serialize::Encodable for Cache {
-    fn encode<S: serialize::Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
-        serialize::Encodable::encode(&(), s)
+impl rustc_serialize::Encodable for Cache {
+    fn encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
+        Encodable::encode(&(), s)
     }
 }
 
-impl serialize::Decodable for Cache {
-    fn decode<D: serialize::Decoder>(d: &mut D) -> Result<Self, D::Error> {
-        serialize::Decodable::decode(d).map(|_v: ()| Self::new())
+impl rustc_serialize::Decodable for Cache {
+    fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error> {
+        Decodable::decode(d).map(|_v: ()| Self::new())
     }
 }
 

src/librustc/mir/interpret/allocation.rs

@@ -113,7 +113,7 @@ impl<Tag> Allocation<Tag> {
     }
 }
 
-impl<'tcx> ::serialize::UseSpecializedDecodable for &'tcx Allocation {}
+impl<'tcx> rustc_serialize::UseSpecializedDecodable for &'tcx Allocation {}
 
 /// Byte accessors
 impl<'tcx, Tag: Copy, Extra: AllocationExtra<Tag>> Allocation<Tag, Extra> {

src/librustc/mir/interpret/mod.rs

@@ -27,7 +27,7 @@ use crate::hir::def_id::DefId;
 use crate::ty::{self, TyCtxt, Instance, subst::UnpackedKind};
 use crate::ty::layout::{self, Size};
 use std::io;
-use crate::rustc_serialize::{Encoder, Decodable, Encodable};
+use rustc_serialize::{Encoder, Decodable, Encodable};
 use rustc_data_structures::fx::FxHashMap;
 use rustc_data_structures::sync::{Lock as Mutex, HashMapExt};
 use rustc_data_structures::tiny_list::TinyList;
@@ -51,8 +51,8 @@ pub struct GlobalId<'tcx> {
 #[derive(Copy, Clone, Eq, Hash, Ord, PartialEq, PartialOrd, Debug)]
 pub struct AllocId(pub u64);
 
-impl crate::rustc_serialize::UseSpecializedEncodable for AllocId {}
-impl crate::rustc_serialize::UseSpecializedDecodable for AllocId {}
+impl rustc_serialize::UseSpecializedEncodable for AllocId {}
+impl rustc_serialize::UseSpecializedDecodable for AllocId {}
 
 #[derive(RustcDecodable, RustcEncodable)]
 enum AllocDiscriminant {

src/librustc/mir/mod.rs

@@ -9,7 +9,6 @@ use crate::hir::def_id::DefId;
 use crate::hir::{self, InlineAsm as HirInlineAsm};
 use crate::mir::interpret::{ConstValue, PanicMessage, Scalar};
 use crate::mir::visit::MirVisitable;
-use crate::rustc_serialize as serialize;
 use crate::ty::adjustment::PointerCast;
 use crate::ty::fold::{TypeFoldable, TypeFolder, TypeVisitor};
 use crate::ty::layout::VariantIdx;
@@ -28,6 +27,7 @@ use rustc_data_structures::indexed_vec::{Idx, IndexVec};
 use rustc_data_structures::sync::Lrc;
 use rustc_data_structures::sync::MappedReadGuard;
 use rustc_macros::HashStable;
+use rustc_serialize::{Encodable, Decodable};
 use smallvec::SmallVec;
 use std::borrow::Cow;
 use std::fmt::{self, Debug, Display, Formatter, Write};
@@ -463,8 +463,8 @@ impl<T> ClearCrossCrate<T> {
     }
 }
 
-impl<T: serialize::Encodable> serialize::UseSpecializedEncodable for ClearCrossCrate<T> {}
-impl<T: serialize::Decodable> serialize::UseSpecializedDecodable for ClearCrossCrate<T> {}
+impl<T: Encodable> rustc_serialize::UseSpecializedEncodable for ClearCrossCrate<T> {}
+impl<T: Decodable> rustc_serialize::UseSpecializedDecodable for ClearCrossCrate<T> {}
 
 /// Grouped information about the source code origin of a MIR entity.
 /// Intended to be inspected by diagnostics and debuginfo.

src/librustc/session/config.rs

@@ -1468,6 +1468,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
     symbol_mangling_version: SymbolManglingVersion = (SymbolManglingVersion::Legacy,
         parse_symbol_mangling_version, [TRACKED],
         "which mangling version to use for symbol names"),
+    binary_dep_depinfo: bool = (false, parse_bool, [TRACKED],
+        "include artifacts (sysroot, crate dependencies) used during compilation in dep-info"),
 }
 
 pub fn default_lib_output() -> CrateType {

src/librustc/session/mod.rs

@@ -545,6 +545,9 @@ impl Session {
     pub fn print_llvm_passes(&self) -> bool {
         self.opts.debugging_opts.print_llvm_passes
     }
+    pub fn binary_dep_depinfo(&self) -> bool {
+        self.opts.debugging_opts.binary_dep_depinfo
+    }
 
     /// Gets the features enabled for the current compilation session.
     /// DO NOT USE THIS METHOD if there is a TyCtxt available, as it circumvents

src/librustc/ty/codec.rs

@@ -10,7 +10,7 @@ use crate::arena::ArenaAllocatable;
 use crate::hir::def_id::{DefId, CrateNum};
 use crate::infer::canonical::{CanonicalVarInfo, CanonicalVarInfos};
 use rustc_data_structures::fx::FxHashMap;
-use crate::rustc_serialize::{Decodable, Decoder, Encoder, Encodable, opaque};
+use rustc_serialize::{Decodable, Decoder, Encoder, Encodable, opaque};
 use std::hash::Hash;
 use std::intrinsics;
 use crate::ty::{self, Ty, TyCtxt};
@@ -333,7 +333,7 @@ macro_rules! implement_ty_decoder {
             use $crate::ty::codec::*;
             use $crate::ty::subst::SubstsRef;
             use $crate::hir::def_id::{CrateNum};
-            use crate::rustc_serialize::{Decoder, SpecializedDecoder};
+            use rustc_serialize::{Decoder, SpecializedDecoder};
             use std::borrow::Cow;
 
             impl<$($typaram ),*> Decoder for $DecoderName<$($typaram),*> {

src/librustc/ty/mod.rs

@@ -32,7 +32,7 @@ use crate::util::nodemap::{NodeSet, DefIdMap, FxHashMap};
 use arena::SyncDroplessArena;
 use crate::session::DataTypeKind;
 
-use serialize::{self, Encodable, Encoder};
+use rustc_serialize::{self, Encodable, Encoder};
 use std::cell::RefCell;
 use std::cmp::{self, Ordering};
 use std::fmt;
@@ -588,8 +588,8 @@ impl<'a, 'tcx> HashStable<StableHashingContext<'a>> for ty::TyS<'tcx> {
 
 pub type Ty<'tcx> = &'tcx TyS<'tcx>;
 
-impl<'tcx> serialize::UseSpecializedEncodable for Ty<'tcx> {}
-impl<'tcx> serialize::UseSpecializedDecodable for Ty<'tcx> {}
+impl<'tcx> rustc_serialize::UseSpecializedEncodable for Ty<'tcx> {}
+impl<'tcx> rustc_serialize::UseSpecializedDecodable for Ty<'tcx> {}
 
 pub type CanonicalTy<'tcx> = Canonical<'tcx, Ty<'tcx>>;
 
@@ -708,7 +708,7 @@ impl<'a, T> IntoIterator for &'a List<T> {
     }
 }
 
-impl<'tcx> serialize::UseSpecializedDecodable for &'tcx List<Ty<'tcx>> {}
+impl<'tcx> rustc_serialize::UseSpecializedDecodable for &'tcx List<Ty<'tcx>> {}
 
 impl<T> List<T> {
     #[inline(always)]
@@ -1009,8 +1009,8 @@ pub struct GenericPredicates<'tcx> {
     pub predicates: Vec<(Predicate<'tcx>, Span)>,
 }
 
-impl<'tcx> serialize::UseSpecializedEncodable for GenericPredicates<'tcx> {}
-impl<'tcx> serialize::UseSpecializedDecodable for GenericPredicates<'tcx> {}
+impl<'tcx> rustc_serialize::UseSpecializedEncodable for GenericPredicates<'tcx> {}
+impl<'tcx> rustc_serialize::UseSpecializedDecodable for GenericPredicates<'tcx> {}
 
 impl<'tcx> GenericPredicates<'tcx> {
     pub fn instantiate(
@@ -1985,13 +1985,13 @@ impl Hash for AdtDef {
     }
 }
 
-impl<'tcx> serialize::UseSpecializedEncodable for &'tcx AdtDef {
+impl<'tcx> rustc_serialize::UseSpecializedEncodable for &'tcx AdtDef {
     fn default_encode<S: Encoder>(&self, s: &mut S) -> Result<(), S::Error> {
         self.did.encode(s)
     }
 }
 
-impl<'tcx> serialize::UseSpecializedDecodable for &'tcx AdtDef {}
+impl<'tcx> rustc_serialize::UseSpecializedDecodable for &'tcx AdtDef {}
 
 
 impl<'a> HashStable<StableHashingContext<'a>> for AdtDef {

src/librustc/ty/query/on_disk_cache.rs

@@ -5,7 +5,7 @@ use crate::hir::map::definitions::DefPathHash;
 use crate::ich::{CachingSourceMapView, Fingerprint};
 use crate::mir::{self, interpret};
 use crate::mir::interpret::{AllocDecodingSession, AllocDecodingState};
-use crate::rustc_serialize::{Decodable, Decoder, Encodable, Encoder, opaque,
+use rustc_serialize::{Decodable, Decoder, Encodable, Encoder, opaque,
                       SpecializedDecoder, SpecializedEncoder,
                       UseSpecializedDecodable, UseSpecializedEncodable};
 use crate::session::{CrateDisambiguator, Session};