Subtree update GCC backend 2025 05 14 #141002
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…update_cg_gcc_2025-04-25
…mentions Enable `[no-mentions]` and `[issue-links]` in `rustbot`
…4_26 Sync from rust 2025/04/26
Support for `f16` and `f128` is varied across targets, backends, and backend versions. Eventually we would like to reach a point where all backends support these approximately equally, but until then we have to work around some of these nuances of support being observable. Introduce the `cfg_target_has_reliable_f16_f128` internal feature, which provides the following new configuration gates: * `cfg(target_has_reliable_f16)` * `cfg(target_has_reliable_f16_math)` * `cfg(target_has_reliable_f128)` * `cfg(target_has_reliable_f128_math)` `reliable_f16` and `reliable_f128` indicate that basic arithmetic for the type works correctly. The `_math` versions indicate that anything relying on `libm` works correctly, since sometimes this hits a separate class of codegen bugs. These options match configuration set by the build script at [1]. The logic for LLVM support is duplicated as-is from the same script. There are a few possible updates that will come as a follow up. The config introduced here is not planned to ever become stable, it is only intended to replace the build scripts for `std` tests and `compiler-builtins` that don't have any way to configure based on the codegen backend. MCP: rust-lang/compiler-team#866 Closes: rust-lang/compiler-team#866 [1]: https://github.com/rust-lang/rust/blob/555e1d0386f024a8359645c3217f4b3eae9be042/library/std/build.rs#L84-L186
improve doc for new contributors
Clean up docs
…esleywiser Share the naked asm impl between cg_ssa and cg_clif This was introduced in rust-lang#128004.
…conv-attributes Support more calling convention attributes
Stop ignoring the feature -sse
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Some changes occurred in compiler/rustc_codegen_gcc |
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@bors r+ rollup=never |
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@bors r- |
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@bors r+ rollup=never |
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🌲 The tree is currently closed for pull requests below priority 100. This pull request will be tested once the tree is reopened. |
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☀️ Test successful - checks-actions |
What is this?This is an experimental post-merge analysis report that shows differences in test outcomes between the merged PR and its parent PR.Comparing c8bda74 (parent) -> a69bc17 (this PR) Test differencesNo test diffs found Test dashboardRun cargo run --manifest-path src/ci/citool/Cargo.toml -- \
test-dashboard a69bc17fb8026bdc0d24bb1896ff95f0eba1da4e --output-dir test-dashboardAnd then open Job duration changes
How to interpret the job duration changes?Job durations can vary a lot, based on the actual runner instance |
This was referenced May 17, 2025
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Finished benchmarking commit (a69bc17): comparison URL. Overall result: ❌ regressions - no action needed@rustbot label: -perf-regression Instruction countThis is the most reliable metric that we have; it was used to determine the overall result at the top of this comment. However, even this metric can sometimes exhibit noise.
Max RSS (memory usage)Results (secondary 0.3%)This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
CyclesResults (secondary -0.3%)This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.
Binary sizeThis benchmark run did not return any relevant results for this metric. Bootstrap: 772.939s -> 774.345s (0.18%) |
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cc @antoyo