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Rollup of 8 pull requests #122303

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Successful merges:

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@rustbot modify labels: rollup

Create a similar rollup

onur-ozkan and others added 16 commits March 8, 2024 22:22
Previously, doing `x test compiler/*` would fail the build due to missing libraries.
This change ensures that it is prepared.

Signed-off-by: onur-ozkan <work@onurozkan.dev>
Remove `Word` from the `unix_sigpipe` attribute template so that plain
`#[unix_sigpipe]` is not included in suggestions of valid forms of the
attribute. Also re-arrange diagnostics code slightly to avoid duplicate
diagnostics.
[bootstrap] Move the `split-debuginfo` setting to the per-target section

As described in rust-lang#112406, bootstrap currently applies the global `split-debuginfo` setting to all artifacts, irrespective of their target triple.

This doesn't cause problems when the "build" triple defaults `split-debuginfo` to `off` (as is the case on Linux, for example).

However, when the "build" triple has `split-debuginfo` enabled and additional target triples are configured, then artifacts for the additional triples will also be built with `split-debuginfo` (despite not necessarily supporting `split-debuginfo`).

rust-lang#112406 mentions `riscv32imc-unknown-none-elf` as one target where this happens, and I've run into this with Wasm as well.

This PR does **not** implement ``@ehuss's`` suggestion that "bootstrap not try to guess how to configure split-debuginfo, and instead use cargo profiles to set it", because that seemed like a lot more significant change.

---

After this PR, anyone explicitly setting `rust.split-debuginfo` should update their configuration to specify the setting in the `target.<triple>` section, though `rust.split-debuginfo` will still be honored for the "build" triple for now.

This PR changes the behavior when `rust.split-debuginfo` was **not** explicitly set **and** bootstrap is configured to cross-compile to a triple that has a different `split-debuginfo` than the "build" triple.

---

If there's a reasonable way to add additional tests for this, please let me know (I didn't find any tests checking cargo arguments in [`builder/tests.rs`](https://github.com/rust-lang/rust/blob/master/src/bootstrap/src/core/builder/tests.rs)).
…arget, r=albertlarsan68

ensure that sysroot is properly set for cross-targets

Previously, doing `x test compiler/*` would result in build failures due to missing libraries. This ensures properly setting up the sysroot for cross targets.
io::Read trait: make it more clear when we are adressing implementations vs callers

Inspired by [this](rust-lang#72186 (comment)) comment.

For some reason we only have that `buf` warning in `read` and `read_exact`, even though it affects a bunch of other functions of this trait as well. It doesn't seem worth copy-pasting the same text everywhere though so I did not change this.
use Instance::expect_resolve() instead of unwraping Instance::resolve()
…errors

MIR printing: print the path of uneval'd const

Currently it just prints `const _` which makes it impossible to say which constant is being referred to.

Also refer to promoteds in a consistent way; previously MIR printing would do
```
promoted[0] in C1: &Option<Cell<i32>> = {
    // ...
}
```
Now that should be
```
const C1::promoted[0]: &Option<Cell<i32>> = {
    // ...
}
```

We don't seem to have a test for that so I tried it by hand, it seems to work:
```
const main::promoted[12]: &[&str; 3] = {
    let mut _0: &[&str; 3];
    let mut _1: [&str; 3];
    let mut _2: &str;
    let mut _3: &str;
    let mut _4: &str;
    let mut _5: &str;

    bb0: {
        _3 = const "b";
        _2 = &(*_3);
        _5 = const "c";
        _4 = &(*_5);
        _1 = [const "a", move _2, move _4];
        _0 = &_1;
        return;
    }
}
```
…ease

diagnostics: Do not suggest using `#[unix_sigpipe]` without a value

Remove `Word` from the `unix_sigpipe` attribute template so that plain `#[unix_sigpipe]` is not included in suggestions of valid forms of the attribute. Also re-arrange diagnostics code slightly to avoid duplicate diagnostics.

Tracking issue is rust-lang#97889.
…zkan

bootstrap: document what the triples in 'Build' mean

Thanks to `@onur-ozkan`  for pointing this out to me.
@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. rollup A PR which is a rollup labels Mar 10, 2024
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@bors r+ rollup=never p=8

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bors commented Mar 10, 2024

📌 Commit c770ce4 has been approved by matthiaskrgr

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 10, 2024
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bors commented Mar 10, 2024

⌛ Testing commit c770ce4 with merge ffc7900...

bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 10, 2024
…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#121754 ([bootstrap] Move the `split-debuginfo` setting to the per-target section)
 - rust-lang#122205 (ensure that sysroot is properly set for cross-targets)
 - rust-lang#122275 (disable OOM test in Miri)
 - rust-lang#122276 (io::Read trait: make it more clear when we are adressing implementations vs callers)
 - rust-lang#122286 (use Instance::expect_resolve() instead of unwraping Instance::resolve())
 - rust-lang#122290 (MIR printing: print the path of uneval'd const)
 - rust-lang#122293 (diagnostics: Do not suggest using `#[unix_sigpipe]` without a value)
 - rust-lang#122297 (bootstrap: document what the triples in 'Build' mean)

r? `@ghost`
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The job test-various failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)
CMAKE_wasm32-unknown-unknown = None
CMAKE_wasm32_unknown_unknown = None
TARGET_CMAKE = None
CMAKE = None
running: cd "/checkout/obj/build/wasm32-unknown-unknown/llvm/build" && CMAKE_PREFIX_PATH="" DESTDIR="" "cmake" "/checkout/src/llvm-project/llvm" "-G" "Ninja" "-DLLVM_ENABLE_ASSERTIONS=ON" "-DLLVM_UNREACHABLE_OPTIMIZE=OFF" "-DLLVM_ENABLE_PLUGINS=OFF" "-DLLVM_TARGETS_TO_BUILD=AArch64;ARM;BPF;Hexagon;LoongArch;MSP430;Mips;NVPTX;PowerPC;RISCV;Sparc;SystemZ;WebAssembly;X86" "-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=AVR;M68k;CSKY" "-DLLVM_INCLUDE_EXAMPLES=OFF" "-DLLVM_INCLUDE_DOCS=OFF" "-DLLVM_INCLUDE_BENCHMARKS=OFF" "-DLLVM_INCLUDE_TESTS=OFF" "-DLLVM_ENABLE_TERMINFO=OFF" "-DLLVM_ENABLE_LIBEDIT=OFF" "-DLLVM_ENABLE_BINDINGS=OFF" "-DLLVM_ENABLE_Z3_SOLVER=OFF" "-DLLVM_PARALLEL_COMPILE_JOBS=8" "-DLLVM_TARGET_ARCH=wasm32" "-DLLVM_DEFAULT_TARGET_TRIPLE=wasm32-unknown-unknown" "-DLLVM_ENABLE_WARNINGS=OFF" "-DLLVM_INSTALL_UTILS=ON" "-DLLVM_ENABLE_ZSTD=OFF" "-DLLVM_ENABLE_ZLIB=ON" "-DLLVM_LINK_LLVM_DYLIB=ON" "-DLLVM_ENABLE_LIBXML2=OFF" "-DLLVM_TABLEGEN=/checkout/obj/build/x86_64-unknown-linux-gnu/ci-llvm/bin/llvm-tblgen" "-DLLVM_NM=/checkout/obj/build/x86_64-unknown-linux-gnu/ci-llvm/bin/llvm-nm" "-DLLVM_CONFIG_PATH=/checkout/obj/build/x86_64-unknown-linux-gnu/ci-llvm/bin/llvm-config" "-DLLVM_VERSION_SUFFIX=-rust-1.78.0-nightly" "-DCMAKE_INSTALL_MESSAGE=LAZY" "-DCMAKE_CROSSCOMPILING=True" "-DCMAKE_C_COMPILER_LAUNCHER=sccache" "-DCMAKE_CXX_COMPILER_LAUNCHER=sccache" "-DCMAKE_C_COMPILER=clang-11" "-DCMAKE_CXX_COMPILER=clang" "-DCMAKE_ASM_COMPILER=clang-11" "-DCMAKE_C_FLAGS=-ffunction-sections -fdata-sections -fPIC --target=wasm32-unknown-unknown" "-DCMAKE_CXX_FLAGS=-ffunction-sections -fdata-sections -fPIC --target=wasm32-unknown-unknown" "-DCMAKE_SHARED_LINKER_FLAGS=" "-DCMAKE_MODULE_LINKER_FLAGS=" "-DCMAKE_EXE_LINKER_FLAGS=" "-DCMAKE_INSTALL_PREFIX=/checkout/obj/build/wasm32-unknown-unknown/llvm" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=wasm32-unknown-unknown" "-DCMAKE_BUILD_TYPE=Release"
-- The CXX compiler identification is unknown
-- The ASM compiler identification is Clang with GNU-like command-line
-- Found assembler: /usr/bin/clang-11
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - failed
-- Check for working C compiler: /usr/bin/clang-11
CMake Error at /usr/share/cmake-3.22/Modules/CMakeTestCCompiler.cmake:69 (message):

    "/usr/bin/clang-11"

-- Check for working C compiler: /usr/bin/clang-11 - broken
-- Check for working C compiler: /usr/bin/clang-11 - broken
  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /checkout/obj/build/wasm32-unknown-unknown/llvm/build/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/ninja cmTC_fdf61 && [1/2] Building C object CMakeFiles/cmTC_fdf61.dir/testCCompiler.c.o
    [2/2] Linking C executable cmTC_fdf61
    FAILED: cmTC_fdf61 
    : && /usr/bin/clang-11 -ffunction-sections -fdata-sections -fPIC --target=wasm32-unknown-unknown  CMakeFiles/cmTC_fdf61.dir/testCCompiler.c.o -o cmTC_fdf61   && :
    clang: error: unable to execute command: Executable "wasm-ld" doesn't exist!
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    ninja: build stopped: subcommand failed.
    

  

---
    clang

  is not a full path and was not found in the PATH.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.


-- Configuring incomplete, errors occurred!
See also "/checkout/obj/build/wasm32-unknown-unknown/llvm/build/CMakeFiles/CMakeOutput.log".
See also "/checkout/obj/build/wasm32-unknown-unknown/llvm/build/CMakeFiles/CMakeError.log".
thread 'main' panicked at /cargo/registry/src/index.crates.io-6f17d22bba15001f/cmake-0.1.48/src/lib.rs:975:5:
command did not execute successfully, got: exit status: 1

build script failed, must exit now
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

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bors commented Mar 10, 2024

💔 Test failed - checks-actions

@bors bors removed the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label Mar 10, 2024
@bors bors added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Mar 10, 2024
@matthiaskrgr matthiaskrgr deleted the rollup-ieokhnz branch March 16, 2024 18:19
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