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Auto merge of rust-lang#120304 - fmease:rollup-h8gaxdp, r=fmease
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Rollup of 8 pull requests

Successful merges:

 - rust-lang#119305 (Add `AsyncFn` family of traits)
 - rust-lang#119389 (Provide more context on recursive `impl` evaluation overflow)
 - rust-lang#120062 (llvm: change data layout bug to an error and make it trigger more)
 - rust-lang#120099 (linker: Refactor library linking methods in `trait Linker`)
 - rust-lang#120201 (Bump some deps with syn 1.0 dependencies)
 - rust-lang#120230 (Assert that a single scope is passed to `for_scope`)
 - rust-lang#120278 (Remove --fatal-warnings on wasm targets)
 - rust-lang#120292 (coverage: Dismantle `Instrumentor` and flatten span refinement)

r? `@ghost`
`@rustbot` modify labels: rollup
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bors committed Jan 24, 2024
2 parents 7ffc697 + bc241fd commit 62730f2
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52 changes: 16 additions & 36 deletions Cargo.lock
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Original file line number Diff line number Diff line change
Expand Up @@ -373,9 +373,9 @@ dependencies = [

[[package]]
name = "byteorder"
version = "1.4.3"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"

[[package]]
name = "bytes"
Expand Down Expand Up @@ -2587,9 +2587,9 @@ checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"

[[package]]
name = "object"
version = "0.32.1"
version = "0.32.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9cf5f9dd3933bd50a9e1f149ec995f39ae2c496d31fd772c1fd45ebc27e902b0"
checksum = "a6a622008b6e321afc04970976f62ee297fdbaa6f95318ca343e3eebb9648441"
dependencies = [
"compiler_builtins",
"crc32fast",
Expand Down Expand Up @@ -4788,12 +4788,12 @@ checksum = "4f3208ce4d8448b3f3e7d168a73f5e0c43a61e32930de3bceeccedb388b6bf06"

[[package]]
name = "ruzstd"
version = "0.4.0"
version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ac3ffab8f9715a0d455df4bbb9d21e91135aab3cd3ca187af0cd0c3c3f868fdc"
checksum = "58c4eb8a81997cf040a091d1f7e1938aeab6749d3a0dfa73af43cdc32393483d"
dependencies = [
"byteorder",
"thiserror-core",
"derive_more",
"twox-hash",
]

Expand Down Expand Up @@ -5356,26 +5356,6 @@ dependencies = [
"thiserror-impl",
]

[[package]]
name = "thiserror-core"
version = "1.0.38"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0d97345f6437bb2004cd58819d8a9ef8e36cdd7661c2abc4bbde0a7c40d9f497"
dependencies = [
"thiserror-core-impl",
]

[[package]]
name = "thiserror-core-impl"
version = "1.0.38"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "10ac1c5050e43014d16b2f94d0d2ce79e65ffdd8b38d8048f9c8f6a8a6da62ac"
dependencies = [
"proc-macro2",
"quote",
"syn 1.0.109",
]

[[package]]
name = "thiserror-impl"
version = "1.0.47"
Expand Down Expand Up @@ -5748,28 +5728,28 @@ dependencies = [

[[package]]
name = "unic-langid"
version = "0.9.1"
version = "0.9.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "398f9ad7239db44fd0f80fe068d12ff22d78354080332a5077dc6f52f14dcf2f"
checksum = "238722e6d794ed130f91f4ea33e01fcff4f188d92337a21297892521c72df516"
dependencies = [
"unic-langid-impl",
"unic-langid-macros",
]

[[package]]
name = "unic-langid-impl"
version = "0.9.1"
version = "0.9.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e35bfd2f2b8796545b55d7d3fd3e89a0613f68a0d1c8bc28cb7ff96b411a35ff"
checksum = "4bd55a2063fdea4ef1f8633243a7b0524cbeef1905ae04c31a1c9b9775c55bc6"
dependencies = [
"tinystr",
]

[[package]]
name = "unic-langid-macros"
version = "0.9.1"
version = "0.9.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "055e618bf694161ffff0466d95cef3e1a5edc59f6ba1888e97801f2b4ebdc4fe"
checksum = "5c854cefb82ff2816410ce606acbad1b3af065140907b29be9229040752b83ec"
dependencies = [
"proc-macro-hack",
"tinystr",
Expand All @@ -5779,13 +5759,13 @@ dependencies = [

[[package]]
name = "unic-langid-macros-impl"
version = "0.9.1"
version = "0.9.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1f5cdec05b907f4e2f6843f4354f4ce6a5bebe1a56df320a49134944477ce4d8"
checksum = "fea2a4c80deb4fb3ca51f66b5e2dd91e3642bbce52234bcf22e41668281208e4"
dependencies = [
"proc-macro-hack",
"quote",
"syn 1.0.109",
"syn 2.0.32",
"unic-langid-impl",
]

Expand Down
3 changes: 3 additions & 0 deletions compiler/rustc_codegen_llvm/messages.ftl
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,9 @@ codegen_llvm_lto_dylib = lto cannot be used for `dylib` crate type without `-Zdy
codegen_llvm_lto_proc_macro = lto cannot be used for `proc-macro` crate type without `-Zdylib-lto`
codegen_llvm_mismatch_data_layout =
data-layout for target `{$rustc_target}`, `{$rustc_layout}`, differs from LLVM target's `{$llvm_target}` default layout, `{$llvm_layout}`
codegen_llvm_missing_features =
add the missing features in a `target_feature` attribute
Expand Down
38 changes: 9 additions & 29 deletions compiler/rustc_codegen_llvm/src/context.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@ use rustc_target::spec::{HasTargetSpec, RelocModel, Target, TlsModel};
use smallvec::SmallVec;

use libc::c_uint;
use std::borrow::Borrow;
use std::cell::{Cell, RefCell};
use std::ffi::CStr;
use std::str;
Expand Down Expand Up @@ -155,42 +156,21 @@ pub unsafe fn create_module<'ll>(
}

// Ensure the data-layout values hardcoded remain the defaults.
if sess.target.is_builtin {
// tm is disposed by its drop impl
{
let tm = crate::back::write::create_informational_target_machine(tcx.sess);
llvm::LLVMRustSetDataLayoutFromTargetMachine(llmod, &tm);

let llvm_data_layout = llvm::LLVMGetDataLayoutStr(llmod);
let llvm_data_layout = str::from_utf8(CStr::from_ptr(llvm_data_layout).to_bytes())
.expect("got a non-UTF8 data-layout from LLVM");

// Unfortunately LLVM target specs change over time, and right now we
// don't have proper support to work with any more than one
// `data_layout` than the one that is in the rust-lang/rust repo. If
// this compiler is configured against a custom LLVM, we may have a
// differing data layout, even though we should update our own to use
// that one.
//
// As an interim hack, if CFG_LLVM_ROOT is not an empty string then we
// disable this check entirely as we may be configured with something
// that has a different target layout.
//
// Unsure if this will actually cause breakage when rustc is configured
// as such.
//
// FIXME(#34960)
let cfg_llvm_root = option_env!("CFG_LLVM_ROOT").unwrap_or("");
let custom_llvm_used = !cfg_llvm_root.trim().is_empty();

if !custom_llvm_used && target_data_layout != llvm_data_layout {
bug!(
"data-layout for target `{rustc_target}`, `{rustc_layout}`, \
differs from LLVM target's `{llvm_target}` default layout, `{llvm_layout}`",
rustc_target = sess.opts.target_triple,
rustc_layout = target_data_layout,
llvm_target = sess.target.llvm_target,
llvm_layout = llvm_data_layout
);
if target_data_layout != llvm_data_layout {
tcx.dcx().emit_err(crate::errors::MismatchedDataLayout {
rustc_target: sess.opts.target_triple.to_string().as_str(),
rustc_layout: target_data_layout.as_str(),
llvm_target: sess.target.llvm_target.borrow(),
llvm_layout: llvm_data_layout,
});
}
}

Expand Down
9 changes: 9 additions & 0 deletions compiler/rustc_codegen_llvm/src/errors.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -244,3 +244,12 @@ pub(crate) struct CopyBitcode {
pub struct UnknownCompression {
pub algorithm: &'static str,
}

#[derive(Diagnostic)]
#[diag(codegen_llvm_mismatch_data_layout)]
pub struct MismatchedDataLayout<'a> {
pub rustc_target: &'a str,
pub rustc_layout: &'a str,
pub llvm_target: &'a str,
pub llvm_layout: &'a str,
}
64 changes: 36 additions & 28 deletions compiler/rustc_codegen_ssa/src/back/link.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,15 @@ use std::path::{Path, PathBuf};
use std::process::{ExitStatus, Output, Stdio};
use std::{env, fmt, fs, io, mem, str};

#[derive(Default)]
pub struct SearchPaths(OnceCell<Vec<PathBuf>>);

impl SearchPaths {
pub(super) fn get(&self, sess: &Session) -> &[PathBuf] {
self.0.get_or_init(|| archive_search_paths(sess))
}
}

pub fn ensure_removed(dcx: &DiagCtxt, path: &Path) {
if let Err(e) = fs::remove_file(path) {
if e.kind() != io::ErrorKind::NotFound {
Expand Down Expand Up @@ -1265,15 +1274,15 @@ fn link_sanitizer_runtime(
let path = find_sanitizer_runtime(sess, &filename);
let rpath = path.to_str().expect("non-utf8 component in path");
linker.args(&["-Wl,-rpath", "-Xlinker", rpath]);
linker.link_dylib(&filename, false, true);
linker.link_dylib_by_name(&filename, false, true);
} else if sess.target.is_like_msvc && flavor == LinkerFlavor::Msvc(Lld::No) && name == "asan" {
// MSVC provides the `/INFERASANLIBS` argument to automatically find the
// compatible ASAN library.
linker.arg("/INFERASANLIBS");
} else {
let filename = format!("librustc{channel}_rt.{name}.a");
let path = find_sanitizer_runtime(sess, &filename).join(&filename);
linker.link_whole_rlib(&path);
linker.link_staticlib_by_path(&path, true);
}
}

Expand Down Expand Up @@ -2445,7 +2454,7 @@ fn add_native_libs_from_crate(
archive_builder_builder: &dyn ArchiveBuilderBuilder,
codegen_results: &CodegenResults,
tmpdir: &Path,
search_paths: &OnceCell<Vec<PathBuf>>,
search_paths: &SearchPaths,
bundled_libs: &FxHashSet<Symbol>,
cnum: CrateNum,
link_static: bool,
Expand Down Expand Up @@ -2505,46 +2514,34 @@ fn add_native_libs_from_crate(
if let Some(filename) = lib.filename {
// If rlib contains native libs as archives, they are unpacked to tmpdir.
let path = tmpdir.join(filename.as_str());
if whole_archive {
cmd.link_whole_rlib(&path);
} else {
cmd.link_rlib(&path);
}
cmd.link_staticlib_by_path(&path, whole_archive);
}
} else {
if whole_archive {
cmd.link_whole_staticlib(
name,
verbatim,
search_paths.get_or_init(|| archive_search_paths(sess)),
);
} else {
cmd.link_staticlib(name, verbatim)
}
cmd.link_staticlib_by_name(name, verbatim, whole_archive, search_paths);
}
}
}
NativeLibKind::Dylib { as_needed } => {
if link_dynamic {
cmd.link_dylib(name, verbatim, as_needed.unwrap_or(true))
cmd.link_dylib_by_name(name, verbatim, as_needed.unwrap_or(true))
}
}
NativeLibKind::Unspecified => {
// If we are generating a static binary, prefer static library when the
// link kind is unspecified.
if !link_output_kind.can_link_dylib() && !sess.target.crt_static_allows_dylibs {
if link_static {
cmd.link_staticlib(name, verbatim)
cmd.link_staticlib_by_name(name, verbatim, false, search_paths);
}
} else {
if link_dynamic {
cmd.link_dylib(name, verbatim, true);
cmd.link_dylib_by_name(name, verbatim, true);
}
}
}
NativeLibKind::Framework { as_needed } => {
if link_dynamic {
cmd.link_framework(name, as_needed.unwrap_or(true))
cmd.link_framework_by_name(name, verbatim, as_needed.unwrap_or(true))
}
}
NativeLibKind::RawDylib => {
Expand Down Expand Up @@ -2581,7 +2578,7 @@ fn add_local_native_libraries(
}
}

let search_paths = OnceCell::new();
let search_paths = SearchPaths::default();
// All static and dynamic native library dependencies are linked to the local crate.
let link_static = true;
let link_dynamic = true;
Expand Down Expand Up @@ -2623,7 +2620,7 @@ fn add_upstream_rust_crates<'a>(
.find(|(ty, _)| *ty == crate_type)
.expect("failed to find crate type in dependency format list");

let search_paths = OnceCell::new();
let search_paths = SearchPaths::default();
for &cnum in &codegen_results.crate_info.used_crates {
// We may not pass all crates through to the linker. Some crates may appear statically in
// an existing dylib, meaning we'll pick up all the symbols from the dylib.
Expand Down Expand Up @@ -2698,7 +2695,7 @@ fn add_upstream_native_libraries(
tmpdir: &Path,
link_output_kind: LinkOutputKind,
) {
let search_path = OnceCell::new();
let search_paths = SearchPaths::default();
for &cnum in &codegen_results.crate_info.used_crates {
// Static libraries are not linked here, they are linked in `add_upstream_rust_crates`.
// FIXME: Merge this function to `add_upstream_rust_crates` so that all native libraries
Expand All @@ -2720,7 +2717,7 @@ fn add_upstream_native_libraries(
archive_builder_builder,
codegen_results,
tmpdir,
&search_path,
&search_paths,
&Default::default(),
cnum,
link_static,
Expand Down Expand Up @@ -2791,7 +2788,7 @@ fn add_static_crate<'a>(
} else {
fix_windows_verbatim_for_gcc(path)
};
cmd.link_rlib(&rlib_path);
cmd.link_staticlib_by_path(&rlib_path, false);
};

if !are_upstream_rust_objects_already_included(sess)
Expand Down Expand Up @@ -2859,13 +2856,24 @@ fn add_dynamic_crate(cmd: &mut dyn Linker, sess: &Session, cratepath: &Path) {
// Just need to tell the linker about where the library lives and
// what its name is
let parent = cratepath.parent();
// When producing a dll, the MSVC linker may not actually emit a
// `foo.lib` file if the dll doesn't actually export any symbols, so we
// check to see if the file is there and just omit linking to it if it's
// not present.
if sess.target.is_like_msvc && !cratepath.with_extension("dll.lib").exists() {
return;
}
if let Some(dir) = parent {
cmd.include_path(&rehome_sysroot_lib_dir(sess, dir));
}
let stem = cratepath.file_stem().unwrap().to_str().unwrap();
// "<dir>/name.dll -> name.dll" on windows-msvc
// "<dir>/name.dll -> name" on windows-gnu
// "<dir>/libname.<ext> -> name" elsewhere
let stem = if sess.target.is_like_msvc { cratepath.file_name() } else { cratepath.file_stem() };
let stem = stem.unwrap().to_str().unwrap();
// Convert library file-stem into a cc -l argument.
let prefix = if stem.starts_with("lib") && !sess.target.is_like_windows { 3 } else { 0 };
cmd.link_rust_dylib(&stem[prefix..], parent.unwrap_or_else(|| Path::new("")));
cmd.link_dylib_by_name(&stem[prefix..], false, true);
}

fn relevant_lib(sess: &Session, lib: &NativeLib) -> bool {
Expand Down
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