Sync rustc_codegen_cranelift #105713
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Sync rustc_codegen_cranelift #105713
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initial josh subtree sync This demonstrates what a josh-based rustup would look like with my patched josh. To create it I did ``` git fetch http://localhost:8000/rust-lang/rust.git:start=75dd959a3a40eb5b4574f8d2e23aa6efbeb33573[:prefix=src/tools/miri]:/src/tools/miri.git master git merge FETCH_HEAD ./rustup-toolchain HEAD && ./miri fmt git commit -am rustup ``` Unlike the [previous attempt](rust-lang/miri#2554), this does not add a new root commit to the repo. Once we merge this, we committed to using josh for subtree syncing, and in particular a version of josh that includes josh-project/josh#961 (or something compatible).
update Miri I had to use a hacked version of josh to create this, so let's be careful with merging this and maybe wait a bit to see if the josh issue becomes more clear. But the history looks good to me, we are not adding duplicates of rustc commits that were previously mirrored to Miri. Also I want to add some cross-testing of Miri in x.py.
This removes the rayon dependency that requires the previous update to Cranelift 0.89.0 to be reverted.
The new implementation doesn't use weak lang items and instead changes `#[alloc_error_handler]` to an attribute macro just like `#[global_allocator]`. The attribute will generate the `__rg_oom` function which is called by the compiler-generated `__rust_alloc_error_handler`. If no `__rg_oom` function is defined in any crate then the compiler shim will call `__rdl_oom` in the alloc crate which will simply panic. This also fixes link errors with `-C link-dead-code` with `default_alloc_error_handler`: `__rg_oom` was previously defined in the alloc crate and would attempt to reference the `oom` lang item, even if it didn't exist. This worked as long as `__rg_oom` was excluded from linking since it was not called. This is a prerequisite for the stabilization of `default_alloc_error_handler` (rust-lang#102318).
Previously, rustdoc would unconditionally report the version that *rustc* was compiled with. That showed things like `nightly-2022-10-30`, which wasn't right, since this was a `dev` build compiled from source. Fix it by changing `rustc_driver::version` to a macro expanded at invocation time.
…with linkage attribute" cc rust-lang#104799
This avoids the need to tell git beforehand about your name and email
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@bors r+ subtree sync |
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@bors p=1 subtree sync |
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☀️ Test successful - checks-actions |
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Finished benchmarking commit (d67000e): comparison URL. Overall result: ❌ regressions - no action needed@rustbot label: -perf-regression Instruction countThis is a highly reliable metric that was used to determine the overall result at the top of this comment.
Max RSS (memory usage)This benchmark run did not return any relevant results for this metric. CyclesThis benchmark run did not return any relevant results for this metric. |
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This time there are a bunch of bugfixes, some new llvm intrinsic implementations and refactorings to the build system in preparation for running cg_clif tests as part of
./x.py test.r? @ghost
@rustbot label +A-codegen +A-cranelift +T-compiler