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As an i586 target, it should not have SSE. This caused the following
warning to be emitted:
```
warning: target feature `sse2` must be enabled to ensure that the ABI of the current target can be implemented correctly
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= note: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #116344 <https://github.com/rust-lang/rust/issues/116344>
warning: 1 warning emitted
```
(cherry picked from commit 1c66d5bed9e6444923c04937f5a28bfcec427ec0)
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r=chenyukang,workingjubilee
Add cygwin target.
This PR simply adds cygwin target together with msys2 target, based on ````@ookiineko```` 's (the account has been deleted) [work](https://github.com/ookiineko-cygport/rust) on cygwin target. My full work is here: https://github.com/rust-lang/rust/compare/master...Berrysoft:rust:dev/cygwin
I have succeeded in building a new rustc for cygwin target, and eventually distributed a new version of [fish-shell](https://github.com/Berrysoft/fish-shell/releases) (rewritten by Rust) for MSYS2.
I will open a new PR to fix std if this PR is accepted.
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Replace i686-unknown-redox target with i586-unknown-redox
This change is related to https://github.com/rust-lang/rust/issues/136495
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change)
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r=compiler-errors
compiler: gate `extern "{abi}"` in ast_lowering
I don't believe low-level crates like `rustc_abi` should have to know or care about higher-level concerns like whether the ABI string is stable for users. These implementation details can be made less open to public inspection. This way the code that governs stability is near the code that enforces stability, and compiled together.
It also abstracts away certain error messages instead of constantly repeating them.
A few error messages are simply deleted outright, instead of made uniform, because they are either too dated to be useful or redundant with other diagnostic improvements we could make. These can be pursued in followups: my first concern was making sure there wasn't unnecessary diagnostics-related code in `rustc_abi`, which is not well-positioned to understand what kind of errors are going to be generated based on how it is used.
r? ``@ghost``
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Disable DWARF in linker options for i686-unknown-uefi
This fixes an lld warning:
> warning: linker stderr: rust-lld: section name .debug_frame is longer than 8 characters and will use a non-standard string table
See https://reviews.llvm.org/D69594 for details of where the warning was added.
This warning only occurs with the i686 UEFI target, not x86_64 or aarch64. The x86_64 target uses an LLVM target of
`x86_64-unknown-windows` and aarch64 uses `aarch64-unknown-windows`, but i686 uses `i686-unknown-windows-gnu` (note the `-gnu`). See comments in `i686_unknown_uefi.rs` for details of why.
The `.debug_frame` section should not actually be needed; UEFI targets provide a separate PDB file for debugging. Disable DWARF (and by extension the `.debug_frame` section) by passing `/DEBUG:NODWARF` to lld.
Tested with:
```
export RUSTC_LOG=rustc_codegen_ssa::back::link=info
cargo +stage1 build --release --target i686-unknown-uefi
```
This issue was originally raised here: https://github.com/rust-lang/rust/pull/119286#issuecomment-2612746162. See also https://github.com/rust-lang/rust/issues/136096. It was suggested to file an LLVM bug, but I don't think LLVM is actually doing anything wrong as such.
CC `@dvdhrm` `@jyn514` let me know if you have any feedback on this approach
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Co-authored-by: Ookiineko <chiisaineko@protonmail.com>
Co-authored-by: nora <48135649+Noratrieb@users.noreply.github.com>
Co-authored-by: Jubilee <workingjubilee@gmail.com>
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Add amdgpu target
Add amdgpu target to rustc and enable the LLVM target.
Fix compiling `core` with the amdgpu:
The amdgpu backend makes heavy use of different address spaces. This
leads to situations, where a pointer in one addrspace needs to be casted
to a pointer in a different addrspace. `bitcast` is invalid for this
case, `addrspacecast` needs to be used.
Fix compilation failures that created bitcasts for such cases by
creating pointer casts (which creates an `addrspacecast` under the hood)
instead.
MCP: https://github.com/rust-lang/compiler-team/issues/823
Tracking issue: #135024
Kinda related to the original amdgpu tracking issue #51575 (though that one has been closed for a while).
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By moving this stability check into AST lowering, we effectively make
it impossible to accidentally miss, as it must happen to generate HIR.
Also, we put the ABI-stability code next to code that actually uses it!
This allows code that wants to reason about backend ABI implementations
to stop worrying about high-level concerns like syntax stability,
while still leaving it as the authority on what ABIs actually exist.
It also makes it easy to refactor things to have more consistent errors.
For now, we only apply this to generalize the existing messages a bit.
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This fixes an lld warning:
> warning: linker stderr: rust-lld: section name .debug_frame is longer
> than 8 characters and will use a non-standard string table
See https://reviews.llvm.org/D69594 for details of where the warning was
added.
This warning only occurs with the i686 UEFI target, not x86_64 or
aarch64. The x86_64 target uses an LLVM target of
`x86_64-unknown-windows` and aarch64 uses `aarch64-unknown-windows`, but
i686 uses `i686-unknown-windows-gnu` (note the `-gnu`). See comments in
`i686_unknown_uefi.rs` for details of why.
The `.debug_frame` section should not actually be needed; UEFI targets
provide a separate PDB file for debugging. Disable DWARF (and by
extension the `.debug_frame` section) by passing `/DEBUG:NODWARF` to lld.
Tested with:
export RUSTC_LOG=rustc_codegen_ssa::back::link=info
cargo +stage1 build --release --target i686-unknown-uefi
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Update bootstrap compiler and rustfmt
The rustfmt version we previously used formats things differently from what the latest nightly rustfmt does. This causes issues for subtrees that get formatted both in-tree and in their own repo. Updating the rustfmt used in-tree solves those issues. Also bumped the bootstrap compiler as the stage0 update command always updates both at the same
time.
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r=compiler-errors
compiler: mostly-finish `rustc_abi` updates
This almost-finishes all the updates in the compiler to use `rustc_abi` and removes some of the reexports of `rustc_abi` items in `rustc_target` that were previously available.
r? ```@compiler-errors```
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compiler: Clean up weird `rustc_abi` reexports
Just general cleanup in `rustc_target` and `rustc_abi`. I was originally going to make a PR with a larger change that also fixed the last few crates and in doing so removed some clutter from `rustc_abi`, but wound up slightly stuck on it, then figured out how to fix it, and then got distracted by other things... so now I'm trying to figure out what I had figured out earlier.
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compiler: replace few consts arrays with statics to remove const dupes
Locally on `x86_64-pc-windows-msvc` -100kb for `rustc_driver.dll`
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rustc_target has had a lot of weird reexports for various reasons, but
now we're at a point where we can actually start reducing their number.
We remove weird shadowing-dependent behavior and import directly from
rustc_abi instead of doing weird renaming imports.
This is only incremental progress and does not entirely fix the crate.
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Use +secure-plt for powerpc-unknown-linux-gnu{,spe}
Fixes #136131
See that issue for details.
I'm not sure about the policy about baseline on these platforms (there is no [platform support doc](https://doc.rust-lang.org/nightly/rustc/platform-support.html) for them), but it seems that the Debian/Ubuntu's cross-compiler (powerpc-linux-gnu-gcc) already uses --enable-secureplt at least as of Debian 9 (stretch) and Ubuntu 14.04.
```
$ cat /etc/os-release | grep VERSION_ID
VERSION_ID="9"
$ powerpc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=powerpc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/powerpc-linux-gnu/6/lto-wrapper
Target: powerpc-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 6.3.0-18' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-6 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-powerpc-cross/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-powerpc-cross --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-powerpc-cross --with-arch-directory=ppc --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libgcj --enable-objc-gc=auto --enable-secureplt --disable-softfloat --with-cpu=default32 --disable-softfloat --enable-targets=powerpc-linux,powerpc64-linux --enable-multiarch --with-long-double-128 --enable-multilib --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=powerpc-linux-gnu --program-prefix=powerpc-linux-gnu- --includedir=/usr/powerpc-linux-gnu/include
Thread model: posix
gcc version 6.3.0 20170516 (Debian 6.3.0-18)
```
```
$ cat /etc/os-release | grep VERSION_ID
VERSION_ID="14.04"
$ cat /etc/debian_version
jessie/sid
$ powerpc-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=powerpc-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/powerpc-linux-gnu/4.8/lto-wrapper
Target: powerpc-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.4-2ubuntu1~14.04.1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/powerpc-linux-gnu/include/c++/4.8.4 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --disable-libitm --disable-libsanitizer --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-powerpc-cross/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-powerpc-cross --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-powerpc-cross --with-arch-directory=ppc --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libgcj --enable-objc-gc --enable-secureplt --disable-softfloat --with-cpu=default32 --disable-softfloat --enable-targets=powerpc-linux,powerpc64-linux --enable-multiarch --disable-werror --with-long-double-128 --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=powerpc-linux-gnu --program-prefix=powerpc-linux-gnu- --includedir=/usr/powerpc-linux-gnu/include
Thread model: posix
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
```
cc ```@glaubitz``` (who added powerpc-unknown-linux-gnuspe in https://github.com/rust-lang/rust/pull/48484)
r? tgross35
```@rustbot``` label +O-PowerPC +O-linux-gnu
try-job: dist-powerpc-linux
try-job: dist-powerpc64-linux
try-job: dist-powerpc64le-linux
try-job: dist-various-1
try-job: dist-various-2
try-job: aarch64-gnu
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Explicitly choose x86 softfloat/hardfloat ABI
Part of https://github.com/rust-lang/rust/pull/135408:
Instead of choosing this based on the target features listed in the target spec, make that choice explicit.
All built-in targets are being updated here; custom (JSON-defined) x86 (32bit and 64bit) softfloat targets need to explicitly set `rustc-abi` to `x86-softfloat`.
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it for x86 softfloat
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Add target and compile the amdgpu llvm backend.
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Target option to require explicit cpu
Some targets have many different CPUs and no generic CPU that can be used as a default. For these targets, the user needs to explicitly specify a CPU through `-C target-cpu=`.
Add an option for targets and an error message if no CPU is set.
This affects the proposed amdgpu and avr targets.
amdgpu tracking issue: #135024
AVR MCP: https://github.com/rust-lang/compiler-team/issues/800
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Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
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compiler: Set `target_abi = "ilp32e"` on all riscv32e targets
This allows compile-time configuration based on this. In the near future we should do this across all RISCV targets, probably, but this cfg is essential for building software usable on these targets, and they are tier 3 so it seems less of a concern to tweak their definition thusly.
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Signed-off-by: Florian Bartels <Florian.Bartels@elektrobit.com>
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Signed-off-by: Florian Bartels <Florian.Bartels@elektrobit.com>
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Signed-off-by: Florian Bartels <Florian.Bartels@elektrobit.com>
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stack on aarch64
Signed-off-by: Florian Bartels <Florian.Bartels@elektrobit.com>
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Rollup of 8 pull requests
Successful merges:
- #133605 (Add extensive set of drop order tests)
- #135489 (remove pointless allowed_through_unstable_modules on TryFromSliceError)
- #135757 (Add NuttX support for AArch64 and ARMv7-A targets)
- #135799 (rustdoc-json: Rename `Path::name` to `path`, and give it the path again.)
- #135865 (For E0223, suggest associated functions that are similar to the path, even if the base type has multiple inherent impl blocks.)
- #135890 (Implement `VecDeque::pop_front_if` & `VecDeque::pop_back_if`)
- #135914 (Remove usages of `QueryNormalizer` in the compiler)
- #135936 (fix reify-intrinsic test)
r? `@ghost`
`@rustbot` modify labels: rollup
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Add NuttX support for AArch64 and ARMv7-A targets
This patch adds tier 3 support for AArch64 and ARMv7-A targets in NuttX, including:
- AArch64 target: aarch64-unknown-nuttx
- ARMv7-A target: armv7a-nuttx-eabi, armv7a-nuttx-eabihf
- Thumbv7-A target: thumbv7a-nuttx-eabi, thumbv7a-nuttx-eabihf
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r=rcvalle
Enable kernel sanitizers for aarch64-unknown-none-softfloat
We want kernels to be able to use this bare metal target, so let's enable the sanitizers that kernels want to use.
cc ```@rcvalle``` ```@ojeda``` ```@maurer```
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Update windows-gnu targets to set `DebuginfoKind::DWARF`
These targets have always used DWARF debuginfo and not CodeView/PDB debuginfo like the MSVC Windows targets. However, their target definitions claim to use `DebuginfoKind::PDB` probably to ensure that we do not try to allow the use of split-DWARF debuginfo.
This does not appear to be necessary since the targets set their supported split debug info to `Off`. I've looked at all of the uses of these properties and this patch does not appear to cause any functional changes in compiler behavior. I also added UI tests to attempt to validate there is no change in the behavior of these options on stable compilers.
cc ````@mati865```` since you mentioned this in #135739
cc ````@davidtwco```` for split-dwarf
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We want kernels to be able to use this bare metal target, so
let's enable the sanitizers that kernels want to use.
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These targets have always generated DWARF debuginfo and not CodeView/PDB debuginfo
like the MSVC Windows targets. Correct their target definitions to reflect this.
The newly added tests for the various combinations of `*-windows-gnu*` targets and
`-Csplit-debuginfo` show that this does not change any stable behavior.
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This patch adds tier 3 support for AArch64 and ARMv7-A targets in NuttX,
including:
- AArch64 target: aarch64-unknown-nuttx
- ARMv7-A target: armv7a-nuttx-eabi, armv7a-nuttx-eabihf
- Thumbv7-A target: thumbv7a-nuttx-eabi, thumbv7a-nuttx-eabihf
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
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Add gpu-kernel calling convention
The amdgpu-kernel calling convention was reverted in commit f6b21e90d1ec01081bc2619efb68af6788a63d65 (#120495 and https://github.com/rust-lang/rust-analyzer/pull/16463) due to inactivity in the amdgpu target.
Introduce a `gpu-kernel` calling convention that translates to `ptx_kernel` or `amdgpu_kernel`, depending on the target that rust compiles for.
Tracking issue: #135467
amdgpu target tracking issue: #135024
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Some targets have many different CPUs and no generic CPU that can be
used as a default. For these targets, the user needs to explicitly
specify a CPU through `-C target-cpu=`.
Add an option for targets and an error message if no CPU is set.
This affects the proposed amdgpu and avr targets.
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The amdgpu-kernel calling convention was reverted in commit
f6b21e90d1ec01081bc2619efb68af6788a63d65 due to inactivity in the amdgpu
target.
Introduce a `gpu-kernel` calling convention that translates to
`ptx_kernel` or `amdgpu_kernel`, depending on the target that rust
compiles for.
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Add new `{x86_64,i686}-win7-windows-gnu` targets
These are in symmetry with `{x86_64,i686}-win7-windows-msvc`.
> ## Tier 3 target policy
>
> At this tier, the Rust project provides no official support for a target, so we
> place minimal requirements on the introduction of targets.
>
> A proposed new tier 3 target must be reviewed and approved by a member of the
> compiler team based on these requirements. The reviewer may choose to gauge
> broader compiler team consensus via a [Major Change Proposal (MCP)][https://forge.rust-lang.org/compiler/mcp.html].
>
> A proposed target or target-specific patch that substantially changes code
> shared with other targets (not just target-specific code) must be reviewed and
> approved by the appropriate team for that shared code before acceptance.
>
> - A tier 3 target must have a designated developer or developers (the "target
> maintainers") on record to be CCed when issues arise regarding the target.
> (The mechanism to track and CC such developers may evolve over time.)
This is me, `@tbu-` on github.
> - Targets must use naming consistent with any existing targets; for instance, a
> target for the same CPU or OS as an existing Rust target should use the same
> name for that CPU or OS. Targets should normally use the same names and
> naming conventions as used elsewhere in the broader ecosystem beyond Rust
> (such as in other toolchains), unless they have a very good reason to
> diverge. Changing the name of a target can be highly disruptive, especially
> once the target reaches a higher tier, so getting the name right is important
> even for a tier 3 target.
> - Target names should not introduce undue confusion or ambiguity unless
> absolutely necessary to maintain ecosystem compatibility. For example, if
> the name of the target makes people extremely likely to form incorrect
> beliefs about what it targets, the name should be changed or augmented to
> disambiguate it.
> - If possible, use only letters, numbers, dashes and underscores for the name.
> Periods (`.`) are known to cause issues in Cargo.
Consistent with `{x86_64,i686}-win7-windows-msvc`, see also #118150.
> - Tier 3 targets may have unusual requirements to build or use, but must not
> create legal issues or impose onerous legal terms for the Rust project or for
> Rust developers or users.
> - The target must not introduce license incompatibilities.
> - Anything added to the Rust repository must be under the standard Rust
> license (`MIT OR Apache-2.0`).
> - The target must not cause the Rust tools or libraries built for any other
> host (even when supporting cross-compilation to the target) to depend
> on any new dependency less permissive than the Rust licensing policy. This
> applies whether the dependency is a Rust crate that would require adding
> new license exceptions (as specified by the `tidy` tool in the
> rust-lang/rust repository), or whether the dependency is a native library
> or binary. In other words, the introduction of the target must not cause a
> user installing or running a version of Rust or the Rust tools to be
> subject to any new license requirements.
> - Compiling, linking, and emitting functional binaries, libraries, or other
> code for the target (whether hosted on the target itself or cross-compiling
> from another target) must not depend on proprietary (non-FOSS) libraries.
> Host tools built for the target itself may depend on the ordinary runtime
> libraries supplied by the platform and commonly used by other applications
> built for the target, but those libraries must not be required for code
> generation for the target; cross-compilation to the target must not require
> such libraries at all. For instance, `rustc` built for the target may
> depend on a common proprietary C runtime library or console output library,
> but must not depend on a proprietary code generation library or code
> optimization library. Rust's license permits such combinations, but the
> Rust project has no interest in maintaining such combinations within the
> scope of Rust itself, even at tier 3.
> - "onerous" here is an intentionally subjective term. At a minimum, "onerous"
> legal/licensing terms include but are *not* limited to: non-disclosure
> requirements, non-compete requirements, contributor license agreements
> (CLAs) or equivalent, "non-commercial"/"research-only"/etc terms,
> requirements conditional on the employer or employment of any particular
> Rust developers, revocable terms, any requirements that create liability
> for the Rust project or its developers or users, or any requirements that
> adversely affect the livelihood or prospects of the Rust project or its
> developers or users.
AFAICT, it's the same legal situation as the tier 1 `{x86_64,i686}-pc-windows-gnu`.
> - Neither this policy nor any decisions made regarding targets shall create any
> binding agreement or estoppel by any party. If any member of an approving
> Rust team serves as one of the maintainers of a target, or has any legal or
> employment requirement (explicit or implicit) that might affect their
> decisions regarding a target, they must recuse themselves from any approval
> decisions regarding the target's tier status, though they may otherwise
> participate in discussions.
> - This requirement does not prevent part or all of this policy from being
> cited in an explicit contract or work agreement (e.g. to implement or
> maintain support for a target). This requirement exists to ensure that a
> developer or team responsible for reviewing and approving a target does not
> face any legal threats or obligations that would prevent them from freely
> exercising their judgment in such approval, even if such judgment involves
> subjective matters or goes beyond the letter of these requirements.
Understood.
> - Tier 3 targets should attempt to implement as much of the standard libraries
> as possible and appropriate (`core` for most targets, `alloc` for targets
> that can support dynamic memory allocation, `std` for targets with an
> operating system or equivalent layer of system-provided functionality), but
> may leave some code unimplemented (either unavailable or stubbed out as
> appropriate), whether because the target makes it impossible to implement or
> challenging to implement. The authors of pull requests are not obligated to
> avoid calling any portions of the standard library on the basis of a tier 3
> target not implementing those portions.
This target supports the whole libstd surface, since it's essentially reusing all of the x86_64-pc-windows-gnu target. Understood.
> - The target must provide documentation for the Rust community explaining how
> to build for the target, using cross-compilation if possible. If the target
> supports running binaries, or running tests (even if they do not pass), the
> documentation must explain how to run such binaries or tests for the target,
> using emulation if possible or dedicated hardware if necessary.
I tried to write some documentation on that.
> - Tier 3 targets must not impose burden on the authors of pull requests, or
> other developers in the community, to maintain the target. In particular,
> do not post comments (automated or manual) on a PR that derail or suggest a
> block on the PR based on a tier 3 target. Do not send automated messages or
> notifications (via any medium, including via ``@`)` to a PR author or others
> involved with a PR regarding a tier 3 target, unless they have opted into
> such messages.
> - Backlinks such as those generated by the issue/PR tracker when linking to
> an issue or PR are not considered a violation of this policy, within
> reason. However, such messages (even on a separate repository) must not
> generate notifications to anyone involved with a PR who has not requested
> such notifications.
Understood.
> - Patches adding or updating tier 3 targets must not break any existing tier 2
> or tier 1 target, and must not knowingly break another tier 3 target without
> approval of either the compiler team or the maintainers of the other tier 3
> target.
> - In particular, this may come up when working on closely related targets,
> such as variations of the same architecture with different features. Avoid
> introducing unconditional uses of features that another variation of the
> target may not have; use conditional compilation or runtime detection, as
> appropriate, to let each target run code supported by that target.
> - Tier 3 targets must be able to produce assembly using at least one of
> rustc's supported backends from any host target. (Having support in a fork
> of the backend is not sufficient, it must be upstream.)
Understood.
> If a tier 3 target stops meeting these requirements, or the target maintainers
> no longer have interest or time, or the target shows no signs of activity and
> has not built for some time, or removing the target would improve the quality
> of the Rust codebase, we may post a PR to remove it; any such PR will be CCed
> to the target maintainers (and potentially other people who have previously
> worked on the target), to check potential interest in improving the situation.
>
Understood.
r? compiler-team
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