[beta] backport

.github/workflows/ci.yml

@@ -442,7 +442,7 @@ jobs:
           - name: x86_64-msvc-cargo
             env:
               SCRIPT: python x.py test src/tools/cargotest src/tools/cargo
-              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-msvc"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-pc-windows-msvc --enable-lld"
               VCVARS_BAT: vcvars64.bat
               NO_DEBUG_ASSERTIONS: 1
               NO_LLVM_ASSERTIONS: 1

RELEASES.md

@@ -43,7 +43,7 @@ Libraries
 - [Unicode 13 is now supported.][69929]
 - [`String` now implements `From<&mut str>`.][69661]
 - [`IoSlice` now implements `Copy`.][69403]
-- [`Vec<T>` now implements `From<[T; N]>`.][68692] Where `N` is less than 32.
+- [`Vec<T>` now implements `From<[T; N]>`.][68692] Where `N` is at most 32.
 - [`proc_macro::LexError` now implements `fmt::Display` and `Error`.][68899]
 - [`from_le_bytes`, `to_le_bytes`, `from_be_bytes`, `to_be_bytes`,
   `from_ne_bytes`, and `to_ne_bytes` methods are now `const` for all

src/ci/azure-pipelines/auto.yml

@@ -148,7 +148,7 @@ jobs:
         INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
       x86_64-msvc-cargo:
         SCRIPT: python x.py test src/tools/cargotest src/tools/cargo
-        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
+        INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-lld
         VCVARS_BAT: vcvars64.bat
         # FIXME(#59637)
         NO_DEBUG_ASSERTIONS: 1

src/ci/docker/wasm32/Dockerfile

@@ -27,6 +27,9 @@ ENV PATH=$PATH:/emsdk-portable
 ENV PATH=$PATH:/emsdk-portable/upstream/emscripten/
 ENV PATH=$PATH:/emsdk-portable/node/12.9.1_64bit/bin/
 ENV BINARYEN_ROOT=/emsdk-portable/upstream/
+ENV EMSDK=/emsdk-portable
+ENV EM_CONFIG=/emsdk-portable/.emscripten
+ENV EM_CACHE=/emsdk-portable/upstream/emscripten/cache
 
 ENV TARGETS=wasm32-unknown-emscripten
 

src/ci/github-actions/ci.yml

@@ -505,7 +505,7 @@ jobs:
           - name: x86_64-msvc-cargo
             env:
               SCRIPT: python x.py test src/tools/cargotest src/tools/cargo
-              RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc
+              RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-lld
               VCVARS_BAT: vcvars64.bat
               # FIXME(#59637)
               NO_DEBUG_ASSERTIONS: 1

src/librustc_mir/dataflow/impls/borrowed_locals.rs

@@ -99,9 +99,6 @@ impl<K> GenKillAnalysis<'tcx> for MaybeBorrowedLocals<K>
 where
     K: BorrowAnalysisKind<'tcx>,
 {
-    // The generator transform relies on the fact that this analysis does **not** use "before"
-    // effects.
-
     fn statement_effect(
         &self,
         trans: &mut impl GenKill<Self::Idx>,

src/librustc_mir/dataflow/impls/mod.rs

@@ -22,15 +22,13 @@ use crate::dataflow::drop_flag_effects;
 
 mod borrowed_locals;
 pub(super) mod borrows;
-mod init_locals;
 mod liveness;
 mod storage_liveness;
 
 pub use self::borrowed_locals::{MaybeBorrowedLocals, MaybeMutBorrowedLocals};
 pub use self::borrows::Borrows;
-pub use self::init_locals::MaybeInitializedLocals;
 pub use self::liveness::MaybeLiveLocals;
-pub use self::storage_liveness::MaybeStorageLive;
+pub use self::storage_liveness::{MaybeRequiresStorage, MaybeStorageLive};
 
 /// `MaybeInitializedPlaces` tracks all places that might be
 /// initialized upon reaching a particular point in the control flow