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The medium code model is already the default on the Rust side.
Make sure that linked in C objects (e.g. from glibc) also use
medium code model.
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The current cross-compilation toolchain for the LoongArch64 target
consists of GCC 13.2.0, Binutils 2.40, and Glibc 2.36. However, Binutils
2.40 has known issues that in broken binaries without any error reports:
- https://github.com/rust-lang/rust/issues/121289
- https://github.com/cross-rs/cross/issues/1538
This patch upgrades the cross-compilation toolchain for the LoongArch64 target
to resolve these issues.
- GCC: 13.2.0 -> 14.2.0
- Binutils: 2.40 -> 2.42
The new binaries remain compatible with the existing GCC 13.2.0/Glibc 2.36
distribution, and no issues have been identified.
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`compiler_builtins`
Formerly the `loongarch*-*-none*` targets were added to the
`dist-various-2` CI job, but no corresponding toolchain was added along
with them. This meant the `compiler_builtins` for the targets were built
with the host toolchain.
As the other `dist-various` toolchains are mostly pre-built so far, to
avoid burdening them with crosstool-ng builds, simply move the two
bare-metal LoongArch targets to the `dist-loongarch64-linux` job which
has a ready-to-use LoongArch toolchain. With the proper CFLAGS applied
it is possible to build artifacts suitable for bare-metal. I verified
that the `compiler_builtins` objects are now correctly produced
regarding architecture and ABI, with the changes here applied.
Fixes #125908.
cc @heiher
try-job: dist-loongarch64-linux
try-job: dist-various-2
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When the LoongArch targets were first introduced, the LLVM support was
still immature and various tools were not supported on LoongArch.
Nowadays most infra is in place, so it is time to enable them on
LoongArch to provide a better experience for users of these targets.
Plus, the profiler support is needed by Chromium, so better provide it
in the official artifacts.
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Co-Authored-By: YANG Xiaojuan <yangxiaojuan@loongson.cn>
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