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Auto merge of #79507 - jonas-schievink:rollup-e5yeayh, r=jonas-schievink

Browse Source 
Rollup of 10 pull requests

Successful merges:

 - #78086 (Improve doc for 'as _')
 - #78853 (rustc_parse: fix ConstBlock expr span)
 - #79234 (Resolve typedefs in HashMap gdb/lldb pretty-printers)
 - #79344 (Convert UNC path to local path to satisfy install script on Windows)
 - #79383 (Fix bold code formatting in keyword docs)
 - #79460 (Remove intermediate vectors from `add_bounds`)
 - #79474 (Change comments on types to doc-comments)
 - #79476 (Sync rustc_codegen_cranelift)
 - #79478 (Expand docs on Peekable::peek_mut)
 - #79486 (Slightly improve code samples in E0591)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2020-11-28 15:17:13 +00:00
commit e37f25aa3f
43 changed files with 471 additions and 268 deletions
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1
compiler/rustc_codegen_cranelift/.gitattributes vendored
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@ -1 +1,2 @@
* text=auto eol=lf
*.rs diff=rust

104
compiler/rustc_codegen_cranelift/Cargo.lock
View File

@ -2,9 +2,9 @@
# It is not intended for manual editing.
[[package]]
name = "anyhow"
version = "1.0.33"
version = "1.0.34"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a1fd36ffbb1fb7c834eac128ea8d0e310c5aeb635548f9d58861e1308d46e71c"
checksum = "bf8dcb5b4bbaa28653b647d8c77bd4ed40183b48882e130c1f1ffb73de069fd7"
[[package]]
name = "ar"
@ -31,9 +31,9 @@ checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
[[package]]
name = "cc"
version = "1.0.61"
version = "1.0.62"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed67cbde08356238e75fc4656be4749481eeffb09e19f320a25237d5221c985d"
checksum = "f1770ced377336a88a67c473594ccc14eca6f4559217c34f64aac8f83d641b40"
[[package]]
name = "cfg-if"
@ -41,18 +41,24 @@ version = "0.1.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
[[package]]
name = "cfg-if"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
[[package]]
name = "cranelift-bforest"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"cranelift-entity",
]
[[package]]
name = "cranelift-codegen"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"byteorder",
"cranelift-bforest",
@ -69,8 +75,8 @@ dependencies = [
[[package]]
name = "cranelift-codegen-meta"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"cranelift-codegen-shared",
"cranelift-entity",
@ -78,18 +84,18 @@ dependencies = [
[[package]]
name = "cranelift-codegen-shared"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
[[package]]
name = "cranelift-entity"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
[[package]]
name = "cranelift-frontend"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"cranelift-codegen",
"log",
@ -99,8 +105,8 @@ dependencies = [
[[package]]
name = "cranelift-module"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"anyhow",
"cranelift-codegen",
@ -111,8 +117,8 @@ dependencies = [
[[package]]
name = "cranelift-native"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"cranelift-codegen",
"raw-cpuid",
@ -121,8 +127,8 @@ dependencies = [
[[package]]
name = "cranelift-object"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"anyhow",
"cranelift-codegen",
@ -134,8 +140,8 @@ dependencies = [
[[package]]
name = "cranelift-simplejit"
version = "0.67.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#44cbdecea03c360ea82e6482f0cf6c614effef21"
version = "0.68.0"
source = "git+https://github.com/bytecodealliance/wasmtime/?branch=main#19640367dbf0da7093e61add3306c8d092644fb3"
dependencies = [
"cranelift-codegen",
"cranelift-entity",
@ -151,18 +157,18 @@ dependencies = [
[[package]]
name = "crc32fast"
version = "1.2.0"
version = "1.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ba125de2af0df55319f41944744ad91c71113bf74a4646efff39afe1f6842db1"
checksum = "81156fece84ab6a9f2afdb109ce3ae577e42b1228441eded99bd77f627953b1a"
dependencies = [
"cfg-if",
"cfg-if 1.0.0",
]
[[package]]
name = "errno"
version = "0.2.6"
version = "0.2.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6eab5ee3df98a279d9b316b1af6ac95422127b1290317e6d18c1743c99418b01"
checksum = "fa68f2fb9cae9d37c9b2b3584aba698a2e97f72d7aef7b9f7aa71d8b54ce46fe"
dependencies = [
"errno-dragonfly",
"libc",
@ -187,9 +193,9 @@ checksum = "8f5f3913fa0bfe7ee1fd8248b6b9f42a5af4b9d65ec2dd2c3c26132b950ecfc2"
[[package]]
name = "gimli"
version = "0.22.0"
version = "0.23.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aaf91faf136cb47367fa430cd46e37a788775e7fa104f8b4bcb3861dc389b724"
checksum = "f6503fe142514ca4799d4c26297c4248239fe8838d827db6bd6065c6ed29a6ce"
dependencies = [
"indexmap",
]
@ -212,17 +218,17 @@ dependencies = [
[[package]]
name = "libc"
version = "0.2.79"
version = "0.2.80"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743"
checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614"
[[package]]
name = "libloading"
version = "0.6.4"
version = "0.6.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3557c9384f7f757f6d139cd3a4c62ef4e850696c16bf27924a5538c8a09717a1"
checksum = "1090080fe06ec2648d0da3881d9453d97e71a45f00eb179af7fdd7e3f686fdb0"
dependencies = [
"cfg-if",
"cfg-if 1.0.0",
"winapi",
]
@ -232,7 +238,7 @@ version = "0.4.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4fabed175da42fed1fa0746b0ea71f412aa9d35e76e95e59b192c64b9dc2bf8b"
dependencies = [
"cfg-if",
"cfg-if 0.1.10",
]
[[package]]
@ -246,9 +252,9 @@ dependencies = [
[[package]]
name = "object"
version = "0.21.1"
version = "0.22.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "37fd5004feb2ce328a52b0b3d01dbf4ffff72583493900ed15f22d4111c51693"
checksum = "8d3b63360ec3cb337817c2dbd47ab4a0f170d285d8e5a2064600f3def1402397"
dependencies = [
"crc32fast",
"indexmap",
@ -274,9 +280,9 @@ dependencies = [
[[package]]
name = "raw-cpuid"
version = "7.0.3"
version = "8.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b4a349ca83373cfa5d6dbb66fd76e58b2cca08da71a5f6400de0a0a6a9bceeaf"
checksum = "1fdf7d9dbd43f3d81d94a49c1c3df73cc2b3827995147e6cf7f89d4ec5483e73"
dependencies = [
"bitflags",
"cc",
@ -361,9 +367,9 @@ checksum = "fbee7696b84bbf3d89a1c2eccff0850e3047ed46bfcd2e92c29a2d074d57e252"
[[package]]
name = "syn"
version = "1.0.44"
version = "1.0.48"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e03e57e4fcbfe7749842d53e24ccb9aa12b7252dbe5e91d2acad31834c8b8fdd"
checksum = "cc371affeffc477f42a221a1e4297aedcea33d47d19b61455588bd9d8f6b19ac"
dependencies = [
"proc-macro2",
"quote",
@ -372,24 +378,24 @@ dependencies = [
[[package]]
name = "target-lexicon"
version = "0.11.0"
version = "0.11.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fe2635952a442a01fd4cb53d98858b5e4bb461b02c0d111f22f31772e3e7a8b2"
checksum = "4ee5a98e506fb7231a304c3a1bd7c132a55016cf65001e0282480665870dfcb9"
[[package]]
name = "thiserror"
version = "1.0.21"
version = "1.0.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "318234ffa22e0920fe9a40d7b8369b5f649d490980cf7aadcf1eb91594869b42"
checksum = "0e9ae34b84616eedaaf1e9dd6026dbe00dcafa92aa0c8077cb69df1fcfe5e53e"
dependencies = [
"thiserror-impl",
]
[[package]]
name = "thiserror-impl"
version = "1.0.21"
version = "1.0.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cae2447b6282786c3493999f40a9be2a6ad20cb8bd268b0a0dbf5a065535c0ab"
checksum = "9ba20f23e85b10754cd195504aebf6a27e2e6cbe28c17778a0c930724628dd56"
dependencies = [
"proc-macro2",
"quote",

4
compiler/rustc_codegen_cranelift/Cargo.toml
View File

@ -15,8 +15,8 @@ cranelift-module = { git = "https://github.com/bytecodealliance/wasmtime/", bran
cranelift-simplejit = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main", optional = true }
cranelift-object = { git = "https://github.com/bytecodealliance/wasmtime/", branch = "main" }
target-lexicon = "0.11.0"
gimli = { version = "0.22.0", default-features = false, features = ["write"]}
object = { version = "0.21.1", default-features = false, features = ["std", "read_core", "write", "coff", "elf", "macho", "pe"] }
gimli = { version = "0.23.0", default-features = false, features = ["write"]}
object = { version = "0.22.0", default-features = false, features = ["std", "read_core", "write", "coff", "elf", "macho", "pe"] }
ar = { git = "https://github.com/bjorn3/rust-ar.git", branch = "do_not_remove_cg_clif_ranlib" }
indexmap = "1.0.2"

6
compiler/rustc_codegen_cranelift/Readme.md
View File

@ -51,7 +51,7 @@ This should build and run your project with rustc_codegen_cranelift instead of t
> You should prefer using the Cargo method.
```bash
$ $cg_clif_dir/build/cg_clif my_crate.rs
$ $cg_clif_dir/build/bin/cg_clif my_crate.rs
```
### Jit mode
@ -68,7 +68,7 @@ $ $cg_clif_dir/build/cargo.sh jit
or
```bash
$ $cg_clif_dir/build/cg_clif --jit my_crate.rs
$ $cg_clif_dir/build/bin/cg_clif --jit my_crate.rs
```
### Shell
@ -77,7 +77,7 @@ These are a few functions that allow you to easily run rust code from the shell
```bash
function jit_naked() {
echo "$@" | $cg_clif_dir/build/cg_clif - --jit
echo "$@" | $cg_clif_dir/build/bin/cg_clif - --jit
}
function jit() {

25
compiler/rustc_codegen_cranelift/build.sh
View File

@ -26,22 +26,35 @@ while [[ $# != 0 ]]; do
done
# Build cg_clif
unset CARGO_TARGET_DIR
export RUSTFLAGS="-Zrun_dsymutil=no"
unamestr=$(uname)
if [[ "$unamestr" == 'Linux' ]]; then
export RUSTFLAGS='-Clink-arg=-Wl,-rpath=$ORIGIN/../lib '$RUSTFLAGS
elif [[ "$unamestr" == 'Darwin' ]]; then
export RUSTFLAGS='-Clink-arg=-Wl,-rpath,@loader_path/../lib -Zosx-rpath-install-name '$RUSTFLAGS
dylib_ext='dylib'
else
echo "Unsupported os"
exit 1
fi
if [[ "$CHANNEL" == "release" ]]; then
cargo build --release
else
cargo build
fi
rm -rf $target_dir
mkdir $target_dir
cp -a target/$CHANNEL/cg_clif{,_build_sysroot} target/$CHANNEL/*rustc_codegen_cranelift* $target_dir/
cp -a rust-toolchain scripts/config.sh scripts/cargo.sh $target_dir
rm -rf "$target_dir"
mkdir "$target_dir"
mkdir "$target_dir"/bin "$target_dir"/lib
ln target/$CHANNEL/cg_clif{,_build_sysroot} "$target_dir"/bin
ln target/$CHANNEL/*rustc_codegen_cranelift* "$target_dir"/lib
ln rust-toolchain scripts/config.sh scripts/cargo.sh "$target_dir"
if [[ "$build_sysroot" == "1" ]]; then
echo "[BUILD] sysroot"
export CG_CLIF_INCR_CACHE_DISABLED=1
dir=$(pwd)
cd $target_dir
time $dir/build_sysroot/build_sysroot.sh
cd "$target_dir"
time "$dir/build_sysroot/build_sysroot.sh"
fi

20
compiler/rustc_codegen_cranelift/build_sysroot/Cargo.lock
View File

@ -2,9 +2,9 @@
# It is not intended for manual editing.
[[package]]
name = "addr2line"
version = "0.13.0"
version = "0.14.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1b6a2d3371669ab3ca9797670853d61402b03d0b4b9ebf33d677dfa720203072"
checksum = "7c0929d69e78dd9bf5408269919fcbcaeb2e35e5d43e5815517cdc6a8e11a423"
dependencies = [
"compiler_builtins",
"gimli",
@ -47,9 +47,9 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
[[package]]
name = "cc"
version = "1.0.61"
version = "1.0.65"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed67cbde08356238e75fc4656be4749481eeffb09e19f320a25237d5221c985d"
checksum = "95752358c8f7552394baf48cd82695b345628ad3f170d607de3ca03b8dacca15"
[[package]]
name = "cfg-if"
@ -76,9 +76,9 @@ version = "0.0.0"
[[package]]
name = "dlmalloc"
version = "0.1.4"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "35055b1021724f4eb5262eb49130eebff23fc59fc5a14160e05faad8eeb36673"
checksum = "332570860c2edf2d57914987bf9e24835425f75825086b6ba7d1e6a3e4f1f254"
dependencies = [
"compiler_builtins",
"libc",
@ -108,9 +108,9 @@ dependencies = [
[[package]]
name = "gimli"
version = "0.22.0"
version = "0.23.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aaf91faf136cb47367fa430cd46e37a788775e7fa104f8b4bcb3861dc389b724"
checksum = "f6503fe142514ca4799d4c26297c4248239fe8838d827db6bd6065c6ed29a6ce"
dependencies = [
"compiler_builtins",
"rustc-std-workspace-alloc",
@ -163,9 +163,9 @@ dependencies = [
[[package]]
name = "object"
version = "0.20.0"
version = "0.22.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1ab52be62400ca80aa00285d25253d7f7c437b7375c4de678f5405d3afe82ca5"
checksum = "8d3b63360ec3cb337817c2dbd47ab4a0f170d285d8e5a2064600f3def1402397"
dependencies = [
"compiler_builtins",
"rustc-std-workspace-alloc",

13
compiler/rustc_codegen_cranelift/build_sysroot/build_sysroot.sh
View File

@ -10,10 +10,10 @@ dir=$(pwd)
# Use rustc with cg_clif as hotpluggable backend instead of the custom cg_clif driver so that
# build scripts are still compiled using cg_llvm.
export RUSTC=$dir"/cg_clif_build_sysroot"
export RUSTC=$dir"/bin/cg_clif_build_sysroot"
export RUSTFLAGS=$RUSTFLAGS" --clif"
cd $(dirname "$0")
cd "$(dirname "$0")"
# Cleanup for previous run
# v Clean target dir except for build scripts and incremental cache
@ -28,12 +28,13 @@ if [[ "$1" != "--debug" ]]; then
sysroot_channel='release'
# FIXME Enable incremental again once rust-lang/rust#74946 is fixed
# FIXME Enable -Zmir-opt-level=2 again once it doesn't ice anymore
CARGO_INCREMENTAL=0 RUSTFLAGS="$RUSTFLAGS" cargo build --target $TARGET_TRIPLE --release
CARGO_INCREMENTAL=0 RUSTFLAGS="$RUSTFLAGS" cargo build --target "$TARGET_TRIPLE" --release
else
sysroot_channel='debug'
cargo build --target $TARGET_TRIPLE
cargo build --target "$TARGET_TRIPLE"
fi
# Copy files to sysroot
mkdir -p $dir/sysroot/lib/rustlib/$TARGET_TRIPLE/lib/
cp -a target/$TARGET_TRIPLE/$sysroot_channel/deps/* $dir/sysroot/lib/rustlib/$TARGET_TRIPLE/lib/
mkdir -p "$dir/lib/rustlib/$TARGET_TRIPLE/lib/"
ln "target/$TARGET_TRIPLE/$sysroot_channel/deps/"* "$dir/lib/rustlib/$TARGET_TRIPLE/lib/"
rm "$dir/lib/rustlib/$TARGET_TRIPLE/lib/"*.{rmeta,d}

12
compiler/rustc_codegen_cranelift/build_sysroot/prepare_sysroot_src.sh
View File

@ -1,18 +1,18 @@
#!/bin/bash
set -e
cd $(dirname "$0")
cd "$(dirname "$0")"
SRC_DIR=$(dirname $(rustup which rustc))"/../lib/rustlib/src/rust/"
SRC_DIR="$(dirname "$(rustup which rustc)")/../lib/rustlib/src/rust/"
DST_DIR="sysroot_src"
if [ ! -e $SRC_DIR ]; then
if [ ! -e "$SRC_DIR" ]; then
echo "Please install rust-src component"
exit 1
fi
rm -rf $DST_DIR
mkdir -p $DST_DIR/library
cp -a $SRC_DIR/library $DST_DIR/
cp -a "$SRC_DIR/library" $DST_DIR/
pushd $DST_DIR
echo "[GIT] init"
@ -22,8 +22,8 @@ git add .
echo "[GIT] commit"
git commit -m "Initial commit" -q
for file in $(ls ../../patches/ | grep -v patcha); do
echo "[GIT] apply" $file
git apply ../../patches/$file
echo "[GIT] apply" "$file"
git apply ../../patches/"$file"
git add -A
git commit --no-gpg-sign -m "Patch $file"
done

1
compiler/rustc_codegen_cranelift/example/std_example.rs
View File

@ -53,6 +53,7 @@ fn main() {
assert_eq!(0b0000000000000000000000000010000010000000000000000000000000000000_0000000000100000000000000000000000001000000000000100000000000000u128.leading_zeros(), 26);
assert_eq!(0b0000000000000000000000000010000000000000000000000000000000000000_0000000000000000000000000000000000001000000000000000000010000000u128.trailing_zeros(), 7);
assert_eq!(core::intrinsics::saturating_sub(0, -170141183460469231731687303715884105728i128), 170141183460469231731687303715884105727i128);
let _d = 0i128.checked_div(2i128);
let _d = 0u128.checked_div(2u128);

8
compiler/rustc_codegen_cranelift/patches/0022-core-Disable-not-compiling-tests.patch
View File

@ -52,8 +52,8 @@ index 0475aeb..9558198 100644
fn test_rotate() {
assert_eq!(A.rotate_left(6).rotate_right(2).rotate_right(4), A);
@@ -112,6 +113,7 @@ mod tests {
assert_eq!(B.rotate_left(64), B);
assert_eq!(C.rotate_left(64), C);
assert_eq!(B.rotate_left(128), B);
assert_eq!(C.rotate_left(128), C);
}
+ */
@ -72,8 +72,8 @@ index 04ed14f..a6e372e 100644
fn test_rotate() {
assert_eq!(A.rotate_left(6).rotate_right(2).rotate_right(4), A);
@@ -76,6 +77,7 @@ mod tests {
assert_eq!(B.rotate_left(64), B);
assert_eq!(C.rotate_left(64), C);
assert_eq!(B.rotate_left(128), B);
assert_eq!(C.rotate_left(128), C);
}
+ */

1
compiler/rustc_codegen_cranelift/prepare.sh
View File

@ -24,6 +24,7 @@ git checkout -- .
git checkout 804a7a21b9e673a482797aa289a18ed480e4d813
# build with cg_llvm for perf comparison
unset CARGO_TARGET_DIR
cargo build
mv target/debug/main raytracer_cg_llvm
popd

2
compiler/rustc_codegen_cranelift/rust-toolchain
View File

@ -1 +1 @@
nightly-2020-10-31
nightly-2020-11-27

8
compiler/rustc_codegen_cranelift/scripts/cargo.sh
View File

@ -1,16 +1,16 @@
#!/bin/bash
dir=$(dirname "$0")
source $dir/config.sh
source "$dir/config.sh"
# read nightly compiler from rust-toolchain file
TOOLCHAIN=$(cat $dir/rust-toolchain)
TOOLCHAIN=$(cat "$dir/rust-toolchain")
cmd=$1
shift || true
if [[ "$cmd" = "jit" ]]; then
cargo +${TOOLCHAIN} rustc "$@" -- --jit
cargo "+${TOOLCHAIN}" rustc "$@" -- --jit
else
cargo +${TOOLCHAIN} $cmd "$@"
cargo "+${TOOLCHAIN}" "$cmd" "$@"
fi

19
compiler/rustc_codegen_cranelift/scripts/config.sh
View File

@ -1,7 +1,8 @@
#!/usr/bin/env bash
# Note to people running shellcheck: this file should only be sourced, not executed directly.
set -e
unamestr=`uname`
unamestr=$(uname)
if [[ "$unamestr" == 'Linux' ]]; then
dylib_ext='so'
elif [[ "$unamestr" == 'Darwin' ]]; then
@ -40,19 +41,19 @@ echo
export RUSTC_WRAPPER=
fi
dir=$(cd $(dirname "$BASH_SOURCE"); pwd)
dir=$(cd "$(dirname "${BASH_SOURCE[0]}")"; pwd)
export RUSTC=$dir"/cg_clif"
export RUSTFLAGS=$linker
export RUSTDOCFLAGS=$linker' -Ztrim-diagnostic-paths=no -Cpanic=abort -Zpanic-abort-tests '\
'-Zcodegen-backend='$dir'/librustc_codegen_cranelift.'$dylib_ext' --sysroot '$dir'/sysroot'
export RUSTC=$dir"/bin/cg_clif"
export RUSTFLAGS=$linker" "$RUSTFLAGS
export RUSTDOCFLAGS=$linker' -Cpanic=abort -Zpanic-abort-tests '\
'-Zcodegen-backend='$dir'/lib/librustc_codegen_cranelift.'$dylib_ext' --sysroot '$dir
# FIXME remove once the atomic shim is gone
if [[ `uname` == 'Darwin' ]]; then
if [[ $(uname) == 'Darwin' ]]; then
export RUSTFLAGS="$RUSTFLAGS -Clink-arg=-undefined -Clink-arg=dynamic_lookup"
fi
export LD_LIBRARY_PATH="$dir:$(rustc --print sysroot)/lib:$dir/target/out:$dir/sysroot/lib/rustlib/"$TARGET_TRIPLE"/lib"
export LD_LIBRARY_PATH="$(rustc --print sysroot)/lib"
export DYLD_LIBRARY_PATH=$LD_LIBRARY_PATH
export CG_CLIF_DISPLAY_CG_TIME=1

38
compiler/rustc_codegen_cranelift/scripts/rustup.sh
View File

@ -7,13 +7,13 @@ case $1 in
TOOLCHAIN=$(date +%Y-%m-%d)
echo "=> Installing new nightly"
rustup toolchain install --profile minimal nightly-${TOOLCHAIN} # Sanity check to see if the nightly exists
echo nightly-${TOOLCHAIN} > rust-toolchain
rustup toolchain install --profile minimal "nightly-${TOOLCHAIN}" # Sanity check to see if the nightly exists
echo "nightly-${TOOLCHAIN}" > rust-toolchain
rustup component add rustfmt || true
echo "=> Uninstalling all old nighlies"
for nightly in $(rustup toolchain list | grep nightly | grep -v $TOOLCHAIN | grep -v nightly-x86_64); do
rustup toolchain uninstall $nightly
for nightly in $(rustup toolchain list | grep nightly | grep -v "$TOOLCHAIN" | grep -v nightly-x86_64); do
rustup toolchain uninstall "$nightly"
done
./clean_all.sh
@ -27,14 +27,30 @@ case $1 in
git commit -m "Rustup to $(rustc -V)"
;;
"push")
cg_clif=$(pwd)
pushd ../rust
branch=update_cg_clif-$(date +%Y-%m-%d)
git checkout -b $branch
git subtree pull --prefix=compiler/rustc_codegen_cranelift/ https://github.com/bjorn3/rustc_codegen_cranelift.git master
git push -u my $branch
popd
cg_clif=$(pwd)
pushd ../rust
git pull origin master
branch=sync_cg_clif-$(date +%Y-%m-%d)
git checkout -b "$branch"
git subtree pull --prefix=compiler/rustc_codegen_cranelift/ https://github.com/bjorn3/rustc_codegen_cranelift.git master
git push -u my "$branch"
# immediately merge the merge commit into cg_clif to prevent merge conflicts when syncing
# from rust-lang/rust later
git subtree push --prefix=compiler/rustc_codegen_cranelift/ "$cg_clif" sync_from_rust
popd
git merge sync_from_rust
;;
"pull")
cg_clif=$(pwd)
pushd ../rust
git pull origin master
rust_vers="$(git rev-parse HEAD)"
git subtree push --prefix=compiler/rustc_codegen_cranelift/ "$cg_clif" sync_from_rust
popd
git merge sync_from_rust -m "Sync from rust $rust_vers"
git branch -d sync_from_rust
;;
*)
echo "Unknown command '$1'"
echo "Usage: ./rustup.sh prepare|commit"

6
compiler/rustc_codegen_cranelift/scripts/test_bootstrap.sh
View File

@ -1,7 +1,7 @@
#!/bin/bash
set -e
cd $(dirname "$0")/../
cd "$(dirname "$0")/../"
./build.sh
source build/config.sh
@ -11,7 +11,7 @@ git clone https://github.com/rust-lang/rust.git || true
pushd rust
git fetch
git checkout -- .
git checkout $(rustc -V | cut -d' ' -f3 | tr -d '(')
git checkout "$(rustc -V | cut -d' ' -f3 | tr -d '(')"
git apply - <<EOF
diff --git a/.gitmodules b/.gitmodules
@ -48,7 +48,7 @@ cat > config.toml <<EOF
ninja = false
[build]
rustc = "$(pwd)/../build/cg_clif"
rustc = "$(pwd)/../build/bin/cg_clif"
cargo = "$(rustup which cargo)"
full-bootstrap = true
local-rebuild = true

30
compiler/rustc_codegen_cranelift/scripts/tests.sh
View File

@ -4,63 +4,63 @@ set -e
source build/config.sh
export CG_CLIF_INCR_CACHE_DISABLED=1
MY_RUSTC=$RUSTC" "$RUSTFLAGS" -L crate=target/out --out-dir target/out -Cdebuginfo=2"
MY_RUSTC="$RUSTC $RUSTFLAGS -L crate=target/out --out-dir target/out -Cdebuginfo=2"
function no_sysroot_tests() {
echo "[BUILD] mini_core"
$MY_RUSTC example/mini_core.rs --crate-name mini_core --crate-type lib,dylib --target $TARGET_TRIPLE
$MY_RUSTC example/mini_core.rs --crate-name mini_core --crate-type lib,dylib --target "$TARGET_TRIPLE"
echo "[BUILD] example"
$MY_RUSTC example/example.rs --crate-type lib --target $TARGET_TRIPLE
$MY_RUSTC example/example.rs --crate-type lib --target "$TARGET_TRIPLE"
if [[ "$JIT_SUPPORTED" = "1" ]]; then
echo "[JIT] mini_core_hello_world"
CG_CLIF_JIT_ARGS="abc bcd" $MY_RUSTC --jit example/mini_core_hello_world.rs --cfg jit --target $HOST_TRIPLE
CG_CLIF_JIT_ARGS="abc bcd" $MY_RUSTC --jit example/mini_core_hello_world.rs --cfg jit --target "$HOST_TRIPLE"
else
echo "[JIT] mini_core_hello_world (skipped)"
fi
echo "[AOT] mini_core_hello_world"
$MY_RUSTC example/mini_core_hello_world.rs --crate-name mini_core_hello_world --crate-type bin -g --target $TARGET_TRIPLE
$MY_RUSTC example/mini_core_hello_world.rs --crate-name mini_core_hello_world --crate-type bin -g --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/mini_core_hello_world abc bcd
# (echo "break set -n main"; echo "run"; sleep 1; echo "si -c 10"; sleep 1; echo "frame variable") | lldb -- ./target/out/mini_core_hello_world abc bcd
echo "[AOT] arbitrary_self_types_pointers_and_wrappers"
$MY_RUSTC example/arbitrary_self_types_pointers_and_wrappers.rs --crate-name arbitrary_self_types_pointers_and_wrappers --crate-type bin --target $TARGET_TRIPLE
$MY_RUSTC example/arbitrary_self_types_pointers_and_wrappers.rs --crate-name arbitrary_self_types_pointers_and_wrappers --crate-type bin --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/arbitrary_self_types_pointers_and_wrappers
}
function base_sysroot_tests() {
echo "[AOT] alloc_example"
$MY_RUSTC example/alloc_example.rs --crate-type bin --target $TARGET_TRIPLE
$MY_RUSTC example/alloc_example.rs --crate-type bin --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/alloc_example
if [[ "$JIT_SUPPORTED" = "1" ]]; then
echo "[JIT] std_example"
$MY_RUSTC --jit example/std_example.rs --target $HOST_TRIPLE
$MY_RUSTC --jit example/std_example.rs --target "$HOST_TRIPLE"
else
echo "[JIT] std_example (skipped)"
fi
echo "[AOT] dst_field_align"
# FIXME Re-add -Zmir-opt-level=2 once rust-lang/rust#67529 is fixed.
$MY_RUSTC example/dst-field-align.rs --crate-name dst_field_align --crate-type bin --target $TARGET_TRIPLE
$MY_RUSTC example/dst-field-align.rs --crate-name dst_field_align --crate-type bin --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/dst_field_align || (echo $?; false)
echo "[AOT] std_example"
$MY_RUSTC example/std_example.rs --crate-type bin --target $TARGET_TRIPLE
$MY_RUSTC example/std_example.rs --crate-type bin --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/std_example arg
echo "[AOT] subslice-patterns-const-eval"
$MY_RUSTC example/subslice-patterns-const-eval.rs --crate-type bin -Cpanic=abort --target $TARGET_TRIPLE
$MY_RUSTC example/subslice-patterns-const-eval.rs --crate-type bin -Cpanic=abort --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/subslice-patterns-const-eval
echo "[AOT] track-caller-attribute"
$MY_RUSTC example/track-caller-attribute.rs --crate-type bin -Cpanic=abort --target $TARGET_TRIPLE
$MY_RUSTC example/track-caller-attribute.rs --crate-type bin -Cpanic=abort --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/track-caller-attribute
echo "[AOT] mod_bench"
$MY_RUSTC example/mod_bench.rs --crate-type bin --target $TARGET_TRIPLE
$MY_RUSTC example/mod_bench.rs --crate-type bin --target "$TARGET_TRIPLE"
$RUN_WRAPPER ./target/out/mod_bench
pushd rand
@ -73,13 +73,13 @@ function extended_sysroot_tests() {
pushd simple-raytracer
if [[ "$HOST_TRIPLE" = "$TARGET_TRIPLE" ]]; then
echo "[BENCH COMPILE] ebobby/simple-raytracer"
hyperfine --runs ${RUN_RUNS:-10} --warmup 1 --prepare "cargo clean" \
hyperfine --runs "${RUN_RUNS:-10}" --warmup 1 --prepare "cargo clean" \
"RUSTC=rustc RUSTFLAGS='' cargo build" \
"../build/cargo.sh build"
echo "[BENCH RUN] ebobby/simple-raytracer"
cp ./target/debug/main ./raytracer_cg_clif
hyperfine --runs ${RUN_RUNS:-10} ./raytracer_cg_llvm ./raytracer_cg_clif
hyperfine --runs "${RUN_RUNS:-10}" ./raytracer_cg_llvm ./raytracer_cg_clif
else
echo "[BENCH COMPILE] ebobby/simple-raytracer (skipped)"
echo "[COMPILE] ebobby/simple-raytracer"

6
compiler/rustc_codegen_cranelift/src/abi/mod.rs
View File

@ -214,10 +214,8 @@ pub(crate) fn get_function_name_and_sig<'tcx>(
support_vararg: bool,
) -> (String, Signature) {
assert!(!inst.substs.needs_infer());
let fn_sig = tcx.normalize_erasing_late_bound_regions(
ParamEnv::reveal_all(),
fn_sig_for_fn_abi(tcx, inst),
);
let fn_sig = tcx
.normalize_erasing_late_bound_regions(ParamEnv::reveal_all(), fn_sig_for_fn_abi(tcx, inst));
if fn_sig.c_variadic && !support_vararg {
tcx.sess.span_fatal(
tcx.def_span(inst.def_id()),

6
compiler/rustc_codegen_cranelift/src/archive.rs
View File

@ -8,7 +8,7 @@
use rustc_codegen_ssa::METADATA_FILENAME;
use rustc_session::Session;
use object::{Object, SymbolKind};
use object::{Object, ObjectSymbol, SymbolKind};
#[derive(Debug)]
enum ArchiveEntry {
@ -184,7 +184,7 @@ enum BuilderKind {
entry_name.as_bytes().to_vec(),
object
.symbols()
.filter_map(|(_index, symbol)| {
.filter_map(|symbol| {
if symbol.is_undefined()
|| symbol.is_local()
|| symbol.kind() != SymbolKind::Data
@ -193,7 +193,7 @@ enum BuilderKind {
{
None
} else {
symbol.name().map(|name| name.as_bytes().to_vec())
symbol.name().map(|name| name.as_bytes().to_vec()).ok()
}
})
.collect::<Vec<_>>(),

3
compiler/rustc_codegen_cranelift/src/atomic_shim.rs
View File

@ -7,8 +7,7 @@
#[cfg(all(feature = "jit", unix))]
#[no_mangle]
static mut __cg_clif_global_atomic_mutex: libc::pthread_mutex_t =
libc::PTHREAD_MUTEX_INITIALIZER;
static mut __cg_clif_global_atomic_mutex: libc::pthread_mutex_t = libc::PTHREAD_MUTEX_INITIALIZER;
pub(crate) fn init_global_lock(
module: &mut impl Module,

31
compiler/rustc_codegen_cranelift/src/base.rs
View File

@ -12,6 +12,10 @@ pub(crate) fn codegen_fn<'tcx>(
) {
let tcx = cx.tcx;
let _inst_guard =
crate::PrintOnPanic(|| format!("{:?} {}", instance, tcx.symbol_name(instance).name));
debug_assert!(!instance.substs.needs_infer());
let mir = tcx.instance_mir(instance.def);
// Declare function
@ -499,7 +503,8 @@ fn codegen_stmt<'tcx>(
UnOp::Neg => match layout.ty.kind() {
ty::Int(IntTy::I128) => {
// FIXME remove this case once ineg.i128 works
let zero = CValue::const_val(fx, layout, ty::ScalarInt::null(layout.size));
let zero =
CValue::const_val(fx, layout, ty::ScalarInt::null(layout.size));
crate::num::codegen_int_binop(fx, BinOp::Sub, zero, operand)
}
ty::Int(_) => CValue::by_val(fx.bcx.ins().ineg(val), layout),
@ -509,7 +514,11 @@ fn codegen_stmt<'tcx>(
};
lval.write_cvalue(fx, res);
}
Rvalue::Cast(CastKind::Pointer(PointerCast::ReifyFnPointer), ref operand, to_ty) => {
Rvalue::Cast(
CastKind::Pointer(PointerCast::ReifyFnPointer),
ref operand,
to_ty,
) => {
let from_ty = fx.monomorphize(operand.ty(&fx.mir.local_decls, fx.tcx));
let to_layout = fx.layout_of(fx.monomorphize(to_ty));
match *from_ty.kind() {
@ -530,9 +539,21 @@ fn codegen_stmt<'tcx>(
_ => bug!("Trying to ReifyFnPointer on non FnDef {:?}", from_ty),
}
}
Rvalue::Cast(CastKind::Pointer(PointerCast::UnsafeFnPointer), ref operand, to_ty)
| Rvalue::Cast(CastKind::Pointer(PointerCast::MutToConstPointer), ref operand, to_ty)
| Rvalue::Cast(CastKind::Pointer(PointerCast::ArrayToPointer), ref operand, to_ty) => {
Rvalue::Cast(
CastKind::Pointer(PointerCast::UnsafeFnPointer),
ref operand,
to_ty,
)
| Rvalue::Cast(
CastKind::Pointer(PointerCast::MutToConstPointer),
ref operand,
to_ty,
)
| Rvalue::Cast(
CastKind::Pointer(PointerCast::ArrayToPointer),
ref operand,
to_ty,
) => {
let to_layout = fx.layout_of(fx.monomorphize(to_ty));
let operand = codegen_operand(fx, operand);
lval.write_cvalue(fx, operand.cast_pointer_to(to_layout));

18
compiler/rustc_codegen_cranelift/src/bin/cg_clif.rs
View File

@ -26,15 +26,15 @@ fn config(&mut self, config: &mut interface::Config) {
config.opts.cg.panic = Some(PanicStrategy::Abort);
config.opts.debugging_opts.panic_abort_tests = true;
config.opts.maybe_sysroot = Some(
config.opts.maybe_sysroot.clone().unwrap_or_else(
|| std::env::current_exe()
.unwrap()
.parent()
.unwrap()
.join("sysroot"),
),
);
config.opts.maybe_sysroot = Some(config.opts.maybe_sysroot.clone().unwrap_or_else(|| {
std::env::current_exe()
.unwrap()
.parent()
.unwrap()
.parent()
.unwrap()
.to_owned()
}));
}
}

4
compiler/rustc_codegen_cranelift/src/common.rs
View File

@ -233,7 +233,7 @@ pub(crate) fn type_min_max_value(
let min_msb = bcx.ins().iconst(types::I64, (min >> 64) as u64 as i64);
let min = bcx.ins().iconcat(min_lsb, min_msb);
let max = i128::MIN as u128;
let max = i128::MAX as u128;
let max_lsb = bcx.ins().iconst(types::I64, max as u64 as i64);
let max_msb = bcx.ins().iconst(types::I64, (max >> 64) as u64 as i64);
let max = bcx.ins().iconcat(max_lsb, max_msb);
@ -364,7 +364,7 @@ pub(crate) fn monomorphize<T>(&self, value: T) -> T
self.instance.subst_mir_and_normalize_erasing_regions(
self.tcx,
ty::ParamEnv::reveal_all(),
value
value,
)
}

9
compiler/rustc_codegen_cranelift/src/constant.rs
View File

@ -163,10 +163,7 @@ pub(crate) fn codegen_const_value<'tcx>(
assert!(!layout.is_unsized(), "sized const value");
if layout.is_zst() {
return CValue::by_ref(
crate::Pointer::dangling(layout.align.pref),
layout,
);
return CValue::by_ref(crate::Pointer::dangling(layout.align.pref), layout);
}
match const_val {
@ -186,9 +183,7 @@ pub(crate) fn codegen_const_value<'tcx>(
}
match x {
Scalar::Int(int) => {
CValue::const_val(fx, layout, int)
}
Scalar::Int(int) => CValue::const_val(fx, layout, int),
Scalar::Ptr(ptr) => {
let alloc_kind = fx.tcx.get_global_alloc(ptr.alloc_id);
let base_addr = match alloc_kind {

7
compiler/rustc_codegen_cranelift/src/debuginfo/emit.rs
View File

@ -76,7 +76,7 @@ pub(super) fn new(endian: RunTimeEndian) -> Self {
#[cfg(feature = "jit")]
pub(super) fn relocate_for_jit(
mut self,
jit_product: &cranelift_simplejit::SimpleJITProduct,
jit_module: &cranelift_simplejit::SimpleJITModule,
) -> Vec<u8> {
use std::convert::TryInto;
@ -84,8 +84,9 @@ pub(super) fn relocate_for_jit(
match reloc.name {
super::DebugRelocName::Section(_) => unreachable!(),
super::DebugRelocName::Symbol(sym) => {
let addr = jit_product
.lookup_func(cranelift_module::FuncId::from_u32(sym.try_into().unwrap()));
let addr = jit_module.get_finalized_function(
cranelift_module::FuncId::from_u32(sym.try_into().unwrap()),
);
let val = (addr as u64 as i64 + reloc.addend) as u64;
self.writer
.write_udata_at(reloc.offset as usize, val, reloc.size)

4
compiler/rustc_codegen_cranelift/src/debuginfo/unwind.rs
View File

@ -80,7 +80,7 @@ pub(crate) fn emit<P: WriteDebugInfo>(self, product: &mut P) {
#[cfg(feature = "jit")]
pub(crate) unsafe fn register_jit(
self,
jit_product: &cranelift_simplejit::SimpleJITProduct,
jit_module: &cranelift_simplejit::SimpleJITModule,
) -> Option<UnwindRegistry> {
let mut eh_frame = EhFrame::from(super::emit::WriterRelocate::new(super::target_endian(
self.tcx,
@ -91,7 +91,7 @@ pub(crate) unsafe fn register_jit(
return None;
}
let mut eh_frame = eh_frame.0.relocate_for_jit(jit_product);
let mut eh_frame = eh_frame.0.relocate_for_jit(jit_module);
// GCC expects a terminating "empty" length, so write a 0 length at the end of the table.
eh_frame.extend(&[0, 0, 0, 0]);

31
compiler/rustc_codegen_cranelift/src/discriminant.rs
View File

@ -30,8 +30,16 @@ pub(crate) fn codegen_set_discriminant<'tcx>(
.ty
.discriminant_for_variant(fx.tcx, variant_index)
.unwrap()
.val
.into();
.val;
let to = if ptr.layout().abi.is_signed() {
ty::ScalarInt::try_from_int(
ptr.layout().size.sign_extend(to) as i128,
ptr.layout().size,
)
.unwrap()
} else {
ty::ScalarInt::try_from_uint(to, ptr.layout().size).unwrap()
};
let discr = CValue::const_val(fx, ptr.layout(), to);
ptr.write_cvalue(fx, discr);
}
@ -49,8 +57,12 @@ pub(crate) fn codegen_set_discriminant<'tcx>(
if variant_index != dataful_variant {
let niche = place.place_field(fx, mir::Field::new(tag_field));
let niche_value = variant_index.as_u32() - niche_variants.start().as_u32();
let niche_value = u128::from(niche_value).wrapping_add(niche_start);
let niche_llval = CValue::const_val(fx, niche.layout(), niche_value.into());
let niche_value = ty::ScalarInt::try_from_uint(
u128::from(niche_value).wrapping_add(niche_start),
niche.layout().size,
)
.unwrap();
let niche_llval = CValue::const_val(fx, niche.layout(), niche_value);
niche.write_cvalue(fx, niche_llval);
}
}
@ -78,7 +90,16 @@ pub(crate) fn codegen_get_discriminant<'tcx>(
.ty
.discriminant_for_variant(fx.tcx, *index)
.map_or(u128::from(index.as_u32()), |discr| discr.val);
return CValue::const_val(fx, dest_layout, discr_val.into());
let discr_val = if dest_layout.abi.is_signed() {
ty::ScalarInt::try_from_int(
dest_layout.size.sign_extend(discr_val) as i128,
dest_layout.size,
)
.unwrap()
} else {
ty::ScalarInt::try_from_uint(discr_val, dest_layout.size).unwrap()
};
return CValue::const_val(fx, dest_layout, discr_val);
}
Variants::Multiple {
tag,

6
compiler/rustc_codegen_cranelift/src/driver/aot.rs
View File

@ -145,7 +145,11 @@ fn module_codegen(tcx: TyCtxt<'_>, cgu_name: rustc_span::Symbol) -> ModuleCodege
}
let mut cx = crate::CodegenCx::new(tcx, module, tcx.sess.opts.debuginfo != DebugInfo::None);
super::codegen_mono_items(&mut cx, mono_items);
super::predefine_mono_items(&mut cx, &mono_items);
for (mono_item, (linkage, visibility)) in mono_items {
let linkage = crate::linkage::get_clif_linkage(mono_item, linkage, visibility);
super::codegen_mono_item(&mut cx, mono_item, linkage);
}
let (mut module, global_asm, debug, mut unwind_context) =
tcx.sess.time("finalize CodegenCx", || cx.finalize());
crate::main_shim::maybe_create_entry_wrapper(tcx, &mut module, &mut unwind_context, false);

16
compiler/rustc_codegen_cranelift/src/driver/jit.rs
View File

@ -70,7 +70,11 @@ pub(super) fn run_jit(tcx: TyCtxt<'_>) -> ! {
let (mut jit_module, global_asm, _debug, mut unwind_context) =
super::time(tcx, "codegen mono items", || {
super::codegen_mono_items(&mut cx, mono_items);
super::predefine_mono_items(&mut cx, &mono_items);
for (mono_item, (linkage, visibility)) in mono_items {
let linkage = crate::linkage::get_clif_linkage(mono_item, linkage, visibility);
super::codegen_mono_item(&mut cx, mono_item, linkage);
}
tcx.sess.time("finalize CodegenCx", || cx.finalize())
});
if !global_asm.is_empty() {
@ -81,11 +85,11 @@ pub(super) fn run_jit(tcx: TyCtxt<'_>) -> ! {
tcx.sess.abort_if_errors();
let jit_product = jit_module.finish();
jit_module.finalize_definitions();
let _unwind_register_guard = unsafe { unwind_context.register_jit(&jit_product) };
let _unwind_register_guard = unsafe { unwind_context.register_jit(&jit_module) };
let finalized_main: *const u8 = jit_product.lookup_func(main_func_id);
let finalized_main: *const u8 = jit_module.get_finalized_function(main_func_id);
println!("Rustc codegen cranelift will JIT run the executable, because --jit was passed");
@ -140,11 +144,11 @@ fn load_imported_symbols_for_jit(tcx: TyCtxt<'_>) -> Vec<(String, *const u8)> {
let mut imported_symbols = Vec::new();
for path in dylib_paths {
use object::Object;
use object::{Object, ObjectSymbol};
let lib = libloading::Library::new(&path).unwrap();
let obj = std::fs::read(path).unwrap();
let obj = object::File::parse(&obj).unwrap();
imported_symbols.extend(obj.dynamic_symbols().filter_map(|(_idx, symbol)| {
imported_symbols.extend(obj.dynamic_symbols().filter_map(|symbol| {
let name = symbol.name().unwrap().to_string();
if name.is_empty() || !symbol.is_global() || symbol.is_undefined() {
return None;

26
compiler/rustc_codegen_cranelift/src/driver/mod.rs
View File

@ -1,4 +1,4 @@
//! Drivers are responsible for calling [`codegen_mono_items`] and performing any further actions
//! Drivers are responsible for calling [`codegen_mono_item`] and performing any further actions
//! like JIT executing or writing object files.
use std::any::Any;
@ -40,12 +40,12 @@ pub(crate) fn codegen_crate(
aot::run_aot(tcx, metadata, need_metadata_module)
}
fn codegen_mono_items<'tcx>(
fn predefine_mono_items<'tcx>(
cx: &mut crate::CodegenCx<'tcx, impl Module>,
mono_items: Vec<(MonoItem<'tcx>, (RLinkage, Visibility))>,
mono_items: &[(MonoItem<'tcx>, (RLinkage, Visibility))],
) {
cx.tcx.sess.time("predefine functions", || {
for &(mono_item, (linkage, visibility)) in &mono_items {
for &(mono_item, (linkage, visibility)) in mono_items {
match mono_item {
MonoItem::Fn(instance) => {
let (name, sig) = get_function_name_and_sig(
@ -61,11 +61,6 @@ fn codegen_mono_items<'tcx>(
}
}
});
for (mono_item, (linkage, visibility)) in mono_items {
let linkage = crate::linkage::get_clif_linkage(mono_item, linkage, visibility);
codegen_mono_item(cx, mono_item, linkage);
}
}
fn codegen_mono_item<'tcx, M: Module>(
@ -73,20 +68,15 @@ fn codegen_mono_item<'tcx, M: Module>(
mono_item: MonoItem<'tcx>,
linkage: Linkage,
) {
let tcx = cx.tcx;
match mono_item {
MonoItem::Fn(inst) => {
let _inst_guard =
crate::PrintOnPanic(|| format!("{:?} {}", inst, tcx.symbol_name(inst).name));
debug_assert!(!inst.substs.needs_infer());
tcx.sess
cx.tcx
.sess
.time("codegen fn", || crate::base::codegen_fn(cx, inst, linkage));
}
MonoItem::Static(def_id) => {
crate::constant::codegen_static(&mut cx.constants_cx, def_id);
}
MonoItem::Static(def_id) => crate::constant::codegen_static(&mut cx.constants_cx, def_id),
MonoItem::GlobalAsm(hir_id) => {
let item = tcx.hir().expect_item(hir_id);
let item = cx.tcx.hir().expect_item(hir_id);
if let rustc_hir::ItemKind::GlobalAsm(rustc_hir::GlobalAsm { asm }) = item.kind {
cx.global_asm.push_str(&*asm.as_str());
cx.global_asm.push_str("\n\n");

80
compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
View File

@ -263,6 +263,48 @@ fn simd_pair_for_each_lane<'tcx, M: Module>(
}
}
fn simd_reduce<'tcx, M: Module>(
fx: &mut FunctionCx<'_, 'tcx, M>,
val: CValue<'tcx>,
ret: CPlace<'tcx>,
f: impl Fn(&mut FunctionCx<'_, 'tcx, M>, TyAndLayout<'tcx>, Value, Value) -> Value,
) {
let (lane_layout, lane_count) = lane_type_and_count(fx.tcx, val.layout());
assert_eq!(lane_layout, ret.layout());
let mut res_val = val.value_field(fx, mir::Field::new(0)).load_scalar(fx);
for lane_idx in 1..lane_count {
let lane = val
.value_field(fx, mir::Field::new(lane_idx.into()))
.load_scalar(fx);
res_val = f(fx, lane_layout, res_val, lane);
}
let res = CValue::by_val(res_val, lane_layout);
ret.write_cvalue(fx, res);
}
fn simd_reduce_bool<'tcx, M: Module>(
fx: &mut FunctionCx<'_, 'tcx, M>,
val: CValue<'tcx>,
ret: CPlace<'tcx>,
f: impl Fn(&mut FunctionCx<'_, 'tcx, M>, Value, Value) -> Value,
) {
let (_lane_layout, lane_count) = lane_type_and_count(fx.tcx, val.layout());
assert!(ret.layout().ty.is_bool());
let res_val = val.value_field(fx, mir::Field::new(0)).load_scalar(fx);
let mut res_val = fx.bcx.ins().band_imm(res_val, 1); // mask to boolean
for lane_idx in 1..lane_count {
let lane = val
.value_field(fx, mir::Field::new(lane_idx.into()))
.load_scalar(fx);
let lane = fx.bcx.ins().band_imm(lane, 1); // mask to boolean
res_val = f(fx, res_val, lane);
}
let res = CValue::by_val(res_val, ret.layout());
ret.write_cvalue(fx, res);
}
fn bool_to_zero_or_max_uint<'tcx>(
fx: &mut FunctionCx<'_, 'tcx, impl Module>,
layout: TyAndLayout<'tcx>,
@ -287,7 +329,7 @@ fn bool_to_zero_or_max_uint<'tcx>(
}
macro simd_cmp {
($fx:expr, $cc:ident($x:ident, $y:ident) -> $ret:ident) => {
($fx:expr, $cc:ident|$cc_f:ident($x:ident, $y:ident) -> $ret:ident) => {
let vector_ty = clif_vector_type($fx.tcx, $x.layout());
if let Some(vector_ty) = vector_ty {
@ -308,6 +350,7 @@ fn bool_to_zero_or_max_uint<'tcx>(
|fx, lane_layout, res_lane_layout, x_lane, y_lane| {
let res_lane = match lane_layout.ty.kind() {
ty::Uint(_) | ty::Int(_) => fx.bcx.ins().icmp(IntCC::$cc, x_lane, y_lane),
ty::Float(_) => fx.bcx.ins().fcmp(FloatCC::$cc_f, x_lane, y_lane),
_ => unreachable!("{:?}", lane_layout.ty),
};
bool_to_zero_or_max_uint(fx, res_lane_layout, res_lane)
@ -315,7 +358,7 @@ fn bool_to_zero_or_max_uint<'tcx>(
);
}
},
($fx:expr, $cc_u:ident|$cc_s:ident($x:ident, $y:ident) -> $ret:ident) => {
($fx:expr, $cc_u:ident|$cc_s:ident|$cc_f:ident($x:ident, $y:ident) -> $ret:ident) => {
// FIXME use vector icmp when possible
simd_pair_for_each_lane(
$fx,
@ -326,6 +369,7 @@ fn bool_to_zero_or_max_uint<'tcx>(
let res_lane = match lane_layout.ty.kind() {
ty::Uint(_) => fx.bcx.ins().icmp(IntCC::$cc_u, x_lane, y_lane),
ty::Int(_) => fx.bcx.ins().icmp(IntCC::$cc_s, x_lane, y_lane),
ty::Float(_) => fx.bcx.ins().fcmp(FloatCC::$cc_f, x_lane, y_lane),
_ => unreachable!("{:?}", lane_layout.ty),
};
bool_to_zero_or_max_uint(fx, res_lane_layout, res_lane)
@ -497,12 +541,12 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
};
copy | copy_nonoverlapping, <elem_ty> (v src, v dst, v count) {
let elem_size: u64 = fx.layout_of(elem_ty).size.bytes();
let elem_size = fx
.bcx
.ins()
.iconst(fx.pointer_type, elem_size as i64);
assert_eq!(args.len(), 3);
let byte_amount = fx.bcx.ins().imul(count, elem_size);
let byte_amount = if elem_size != 1 {
fx.bcx.ins().imul_imm(count, elem_size as i64)
} else {
count
};
if intrinsic.contains("nonoverlapping") {
// FIXME emit_small_memcpy
@ -515,12 +559,12 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
// NOTE: the volatile variants have src and dst swapped
volatile_copy_memory | volatile_copy_nonoverlapping_memory, <elem_ty> (v dst, v src, v count) {
let elem_size: u64 = fx.layout_of(elem_ty).size.bytes();
let elem_size = fx
.bcx
.ins()
.iconst(fx.pointer_type, elem_size as i64);
assert_eq!(args.len(), 3);
let byte_amount = fx.bcx.ins().imul(count, elem_size);
let byte_amount = if elem_size != 1 {
fx.bcx.ins().imul_imm(count, elem_size as i64)
} else {
count
};
// FIXME make the copy actually volatile when using emit_small_mem{cpy,move}
if intrinsic.contains("nonoverlapping") {
@ -676,7 +720,11 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
offset | arith_offset, (c base, v offset) {
let pointee_ty = base.layout().ty.builtin_deref(true).unwrap().ty;
let pointee_size = fx.layout_of(pointee_ty).size.bytes();
let ptr_diff = fx.bcx.ins().imul_imm(offset, pointee_size as i64);
let ptr_diff = if pointee_size != 1 {
fx.bcx.ins().imul_imm(offset, pointee_size as i64)
} else {
offset
};
let base_val = base.load_scalar(fx);
let res = fx.bcx.ins().iadd(base_val, ptr_diff);
ret.write_cvalue(fx, CValue::by_val(res, base.layout()));
@ -688,7 +736,11 @@ pub(crate) fn codegen_intrinsic_call<'tcx>(
write_bytes | volatile_set_memory, (c dst, v val, v count) {
let pointee_ty = dst.layout().ty.builtin_deref(true).unwrap().ty;
let pointee_size = fx.layout_of(pointee_ty).size.bytes();
let count = fx.bcx.ins().imul_imm(count, pointee_size as i64);
let count = if pointee_size != 1 {
fx.bcx.ins().imul_imm(count, pointee_size as i64)
} else {
count
};
let dst_ptr = dst.load_scalar(fx);
// FIXME make the memset actually volatile when switching to emit_small_memset
// FIXME use emit_small_memset

65
compiler/rustc_codegen_cranelift/src/intrinsics/simd.rs
View File

@ -35,30 +35,33 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
});
};
// FIXME support float comparisons
simd_eq, (c x, c y) {
validate_simd_type!(fx, intrinsic, span, x.layout().ty);
simd_cmp!(fx, Equal(x, y) -> ret);
simd_cmp!(fx, Equal|Equal(x, y) -> ret);
};
simd_ne, (c x, c y) {
validate_simd_type!(fx, intrinsic, span, x.layout().ty);
simd_cmp!(fx, NotEqual(x, y) -> ret);
simd_cmp!(fx, NotEqual|NotEqual(x, y) -> ret);
};
simd_lt, (c x, c y) {
validate_simd_type!(fx, intrinsic, span, x.layout().ty);
simd_cmp!(fx, UnsignedLessThan|SignedLessThan(x, y) -> ret);
simd_cmp!(fx, UnsignedLessThan|SignedLessThan|LessThan(x, y) -> ret);
};
simd_le, (c x, c y) {
validate_simd_type!(fx, intrinsic, span, x.layout().ty);
simd_cmp!(fx, UnsignedLessThanOrEqual|SignedLessThanOrEqual(x, y) -> ret);
simd_cmp!(fx, UnsignedLessThanOrEqual|SignedLessThanOrEqual|LessThanOrEqual(x, y) -> ret);
};
simd_gt, (c x, c y) {
validate_simd_type!(fx, intrinsic, span, x.layout().ty);
simd_cmp!(fx, UnsignedGreaterThan|SignedGreaterThan(x, y) -> ret);
simd_cmp!(fx, UnsignedGreaterThan|SignedGreaterThan|GreaterThan(x, y) -> ret);
};
simd_ge, (c x, c y) {
validate_simd_type!(fx, intrinsic, span, x.layout().ty);
simd_cmp!(fx, UnsignedGreaterThanOrEqual|SignedGreaterThanOrEqual(x, y) -> ret);
simd_cmp!(
fx,
UnsignedGreaterThanOrEqual|SignedGreaterThanOrEqual|GreaterThanOrEqual
(x, y) -> ret
);
};
// simd_shuffle32<T, U>(x: T, y: T, idx: [u32; 32]) -> U
@ -107,9 +110,9 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
for (out_idx, in_idx) in indexes.into_iter().enumerate() {
let in_lane = if in_idx < lane_count {
x.value_field(fx, mir::Field::new(in_idx.try_into().unwrap()))
x.value_field(fx, mir::Field::new(in_idx.into()))
} else {
y.value_field(fx, mir::Field::new((in_idx - lane_count).try_into().unwrap()))
y.value_field(fx, mir::Field::new((in_idx - lane_count).into()))
};
let out_lane = ret.place_field(fx, mir::Field::new(out_idx));
out_lane.write_cvalue(fx, in_lane);
@ -143,10 +146,17 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
let idx_const = if let Some(idx_const) = crate::constant::mir_operand_get_const_val(fx, idx) {
idx_const
} else {
fx.tcx.sess.span_fatal(
fx.tcx.sess.span_warn(
span,
"Index argument for `simd_extract` is not a constant",
);
let res = crate::trap::trap_unimplemented_ret_value(
fx,
ret.layout(),
"Index argument for `simd_extract` is not a constant",
);
ret.write_cvalue(fx, res);
return;
};
let idx = idx_const.val.try_to_bits(Size::from_bytes(4 /* u32*/)).unwrap_or_else(|| panic!("kind not scalar: {:?}", idx_const));
@ -207,7 +217,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
assert_eq!(lane_count, ret_lane_count);
for lane in 0..lane_count {
let lane = mir::Field::new(lane.try_into().unwrap());
let lane = mir::Field::new(lane.into());
let a_lane = a.value_field(fx, lane).load_scalar(fx);
let b_lane = b.value_field(fx, lane).load_scalar(fx);
let c_lane = c.value_field(fx, lane).load_scalar(fx);
@ -228,11 +238,42 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
simd_flt_binop!(fx, fmax(x, y) -> ret);
};
simd_reduce_add_ordered | simd_reduce_add_unordered, (c v) {
validate_simd_type!(fx, intrinsic, span, v.layout().ty);
simd_reduce(fx, v, ret, |fx, lane_layout, a, b| {
if lane_layout.ty.is_floating_point() {
fx.bcx.ins().fadd(a, b)
} else {
fx.bcx.ins().iadd(a, b)
}
});
};
simd_reduce_mul_ordered | simd_reduce_mul_unordered, (c v) {
validate_simd_type!(fx, intrinsic, span, v.layout().ty);
simd_reduce(fx, v, ret, |fx, lane_layout, a, b| {
if lane_layout.ty.is_floating_point() {
fx.bcx.ins().fmul(a, b)
} else {
fx.bcx.ins().imul(a, b)
}
});
};
simd_reduce_all, (c v) {
validate_simd_type!(fx, intrinsic, span, v.layout().ty);
simd_reduce_bool(fx, v, ret, |fx, a, b| fx.bcx.ins().band(a, b));
};
simd_reduce_any, (c v) {
validate_simd_type!(fx, intrinsic, span, v.layout().ty);
simd_reduce_bool(fx, v, ret, |fx, a, b| fx.bcx.ins().bor(a, b));
};
// simd_fabs
// simd_saturating_add
// simd_bitmask
// simd_select
// simd_reduce_add_{,un}ordered
// simd_rem
}
}

12
compiler/rustc_codegen_cranelift/src/trap.rs
View File

@ -67,3 +67,15 @@ pub(crate) fn trap_unimplemented(fx: &mut FunctionCx<'_, '_, impl Module>, msg:
let true_ = fx.bcx.ins().iconst(types::I32, 1);
fx.bcx.ins().trapnz(true_, TrapCode::User(!0));
}
/// Like `trap_unimplemented` but returns a fake value of the specified type.
///
/// Trap code: user65535
pub(crate) fn trap_unimplemented_ret_value<'tcx>(
fx: &mut FunctionCx<'_, 'tcx, impl Module>,
dest_layout: TyAndLayout<'tcx>,
msg: impl AsRef<str>,
) -> CValue<'tcx> {
trap_unimplemented(fx, msg);
CValue::by_ref(Pointer::const_addr(fx, 0), dest_layout)
}

20
compiler/rustc_error_codes/src/error_codes/E0591.md
View File

@ -1,14 +1,20 @@
Per [RFC 401][rfc401], if you have a function declaration `foo`:
```
struct S;
// For the purposes of this explanation, all of these
// different kinds of `fn` declarations are equivalent:
struct S;
fn foo(x: S) { /* ... */ }
# #[cfg(for_demonstration_only)]
extern "C" { fn foo(x: S); }
extern "C" {
fn foo(x: S);
}
# #[cfg(for_demonstration_only)]
impl S { fn foo(self) { /* ... */ } }
impl S {
fn foo(self) { /* ... */ }
}
```
the type of `foo` is **not** `fn(S)`, as one might expect.
@ -40,10 +46,10 @@ extern "C" fn foo(userdata: Box<i32>) {
# fn callback(_: extern "C" fn(*mut i32)) {}
# use std::mem::transmute;
# unsafe {
let f: extern "C" fn(*mut i32) = transmute(foo);
callback(f);
# }
unsafe {
let f: extern "C" fn(*mut i32) = transmute(foo);
callback(f);
}
```
Here, transmute is being used to convert the types of the fn arguments.

3
compiler/rustc_parse/src/parser/mod.rs
View File

@ -873,7 +873,8 @@ fn parse_const_block(&mut self, span: Span) -> PResult<'a, P<Expr>> {
id: DUMMY_NODE_ID,
value: self.mk_expr(blk.span, ExprKind::Block(blk, None), AttrVec::new()),
};
Ok(self.mk_expr(span, ExprKind::ConstBlock(anon_const), AttrVec::new()))
let blk_span = anon_const.value.span;
Ok(self.mk_expr(span.to(blk_span), ExprKind::ConstBlock(anon_const), AttrVec::new()))
}
/// Parses mutability (`mut` or nothing).

12
compiler/rustc_trait_selection/src/traits/mod.rs
View File

@ -97,13 +97,13 @@ fn default() -> Self {
/// The mode that trait queries run in.
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum TraitQueryMode {
// Standard/un-canonicalized queries get accurate
// spans etc. passed in and hence can do reasonable
// error reporting on their own.
/// Standard/un-canonicalized queries get accurate
/// spans etc. passed in and hence can do reasonable
/// error reporting on their own.
Standard,
// Canonicalized queries get dummy spans and hence
// must generally propagate errors to
// pre-canonicalization callsites.
/// Canonicalized queries get dummy spans and hence
/// must generally propagate errors to
/// pre-canonicalization callsites.
Canonical,
}

19
compiler/rustc_typeck/src/astconv/mod.rs
View File

@ -823,34 +823,25 @@ fn add_bounds(
ast_bounds: &[hir::GenericBound<'_>],
bounds: &mut Bounds<'tcx>,
) {
let mut trait_bounds = Vec::new();
let mut region_bounds = Vec::new();
let constness = self.default_constness_for_trait_bounds();
for ast_bound in ast_bounds {
match *ast_bound {
hir::GenericBound::Trait(ref b, hir::TraitBoundModifier::None) => {
trait_bounds.push((b, constness))
self.instantiate_poly_trait_ref(b, constness, param_ty, bounds);
}
hir::GenericBound::Trait(ref b, hir::TraitBoundModifier::MaybeConst) => {
trait_bounds.push((b, Constness::NotConst))
self.instantiate_poly_trait_ref(b, Constness::NotConst, param_ty, bounds);
}
hir::GenericBound::Trait(_, hir::TraitBoundModifier::Maybe) => {}
hir::GenericBound::LangItemTrait(lang_item, span, hir_id, args) => self
.instantiate_lang_item_trait_ref(
lang_item, span, hir_id, args, param_ty, bounds,
),
hir::GenericBound::Outlives(ref l) => region_bounds.push(l),
hir::GenericBound::Outlives(ref l) => {
bounds.region_bounds.push((self.ast_region_to_region(l, None), l.span))
}
}
}
for (bound, constness) in trait_bounds {
let _ = self.instantiate_poly_trait_ref(bound, constness, param_ty, bounds);
}
bounds.region_bounds.extend(
region_bounds.into_iter().map(|r| (self.ast_region_to_region(r, None), r.span)),
);
}
/// Translates a list of bounds from the HIR into the `Bounds` data structure.

14
library/core/src/iter/adapters/peekable.rs
View File

@ -230,20 +230,24 @@ pub fn peek(&mut self) -> Option<&I::Item> {
///
/// # Examples
///
/// Basic usage:
///
/// ```
/// #![feature(peekable_peek_mut)]
/// let mut iter = [1, 2, 3].iter().peekable();
///
/// // Like with `peek()`, we can see into the future without advancing the iterator.
/// assert_eq!(iter.peek_mut(), Some(&mut &1));
/// assert_eq!(iter.peek_mut(), Some(&mut &1));
/// assert_eq!(iter.next(), Some(&1));
///
/// // Peek into the iterator and modify the value which will be returned next
/// if let Some(mut p) = iter.peek_mut() {
/// if *p == &2 {
/// *p = &5;
/// }
/// // Peek into the iterator and set the value behind the mutable reference.
/// if let Some(p) = iter.peek_mut() {
/// assert_eq!(*p, &2);
/// *p = &5;
/// }
///
/// // The value we put in reappears as the iterator continues.
/// assert_eq!(iter.collect::<Vec<_>>(), vec![&5, &3]);
/// ```
#[inline]

21
library/std/src/keyword_docs.rs
View File

@ -20,19 +20,30 @@
/// explicitly using `as` allows a few more coercions that aren't allowed implicitly, such as
/// changing the type of a raw pointer or turning closures into raw pointers.
///
/// `as` is also used to rename imports in [`use`] and [`extern crate`] statements:
/// `as` can be seen as the primitive for `From` and `Into`: `as` only works with primitives
/// (`u8`, `bool`, `str`, pointers, ...) whereas `From` and `Into` also works with types like
/// `String` or `Vec`.
///
/// `as` can also be used with the `_` placeholder when the destination type can be inferred. Note
/// that this can cause inference breakage and usually such code should use an explicit type for
/// both clarity and stability. This is most useful when converting pointers using `as *const _` or
/// `as *mut _` though the [`cast`][const-cast] method is recommended over `as *const _` and it is
/// [the same][mut-cast] for `as *mut _`: those methods make the intent clearer.
///
/// `as` is also used to rename imports in [`use`] and [`extern crate`][`crate`] statements:
///
/// ```
/// # #[allow(unused_imports)]
/// use std::{mem as memory, net as network};
/// // Now you can use the names `memory` and `network` to refer to `std::mem` and `std::net`.
/// ```
///
/// For more information on what `as` is capable of, see the [Reference].
///
/// [Reference]: ../reference/expressions/operator-expr.html#type-cast-expressions
/// [`crate`]: keyword.crate.html
/// [`use`]: keyword.use.html
/// [`extern crate`]: keyword.crate.html
/// [const-cast]: primitive.pointer.html#method.cast
/// [mut-cast]: primitive.pointer.html#method.cast-1
mod as_keyword {}
#[doc(keyword = "break")]
@ -707,8 +718,8 @@ mod impl_keyword {}
///
/// ## Literal Examples:
///
/// * `for _ **in** 1..3 {}` - Iterate over an exclusive range up to but excluding 3.
/// * `for _ **in** 1..=3 {}` - Iterate over an inclusive range up to and including 3.
/// * `for _ in 1..3 {}` - Iterate over an exclusive range up to but excluding 3.
/// * `for _ in 1..=3 {}` - Iterate over an inclusive range up to and including 3.
///
/// (Read more about [range patterns])
///

6
src/bootstrap/dist.rs
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@ -1183,7 +1183,11 @@ fn run(self, builder: &Builder<'_>) -> PathBuf {
// characters and on `C:\` paths, so normalize both of them away.
pub fn sanitize_sh(path: &Path) -> String {
let path = path.to_str().unwrap().replace("\\", "/");
return change_drive(&path).unwrap_or(path);
return change_drive(unc_to_lfs(&path)).unwrap_or(path);
fn unc_to_lfs(s: &str) -> &str {
if s.starts_with("//?/") { &s[4..] } else { s }
}
fn change_drive(s: &str) -> Option<String> {
let mut ch = s.chars();

2
src/etc/gdb_providers.py
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@ -352,7 +352,7 @@ class StdHashMapProvider:
ctrl = table["ctrl"]["pointer"]
self.size = int(table["items"])
self.pair_type = table.type.template_argument(0)
self.pair_type = table.type.template_argument(0).strip_typedefs()
self.new_layout = not table.type.has_key("data")
if self.new_layout:

2
src/etc/lldb_providers.py
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@ -531,7 +531,7 @@ class StdHashMapSyntheticProvider:
ctrl = table.GetChildMemberWithName("ctrl").GetChildAtIndex(0)
self.size = table.GetChildMemberWithName("items").GetValueAsUnsigned()
self.pair_type = table.type.template_args[0]
self.pair_type = table.type.template_args[0].GetTypedefedType()
self.pair_type_size = self.pair_type.GetByteSize()
self.new_layout = not table.GetChildMemberWithName("data").IsValid()

18
src/test/ui/explain.stdout
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@ -1,12 +1,18 @@
Per [RFC 401][rfc401], if you have a function declaration `foo`:
```
struct S;
// For the purposes of this explanation, all of these
// different kinds of `fn` declarations are equivalent:
struct S;
fn foo(x: S) { /* ... */ }
extern "C" { fn foo(x: S); }
impl S { fn foo(self) { /* ... */ } }
extern "C" {
fn foo(x: S);
}
impl S {
fn foo(self) { /* ... */ }
}
```
the type of `foo` is **not** `fn(S)`, as one might expect.
@ -34,8 +40,10 @@ extern "C" fn foo(userdata: Box<i32>) {
/* ... */
}
let f: extern "C" fn(*mut i32) = transmute(foo);
callback(f);
unsafe {
let f: extern "C" fn(*mut i32) = transmute(foo);
callback(f);
}
```
Here, transmute is being used to convert the types of the fn arguments.