Rollup of 4 pull requests #91253
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Rollup of 4 pull requests #91253
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Reduces the amount of wasted processor cycles
Co-authored-by: kennytm <kennytm@gmail.com>
Change cg_ssa's get_param to borrow the builder mutably This is a small change to make `get_param` more flexible for codegens that may need to modify things when retrieving function parameters. This will currently only be used by [rustc_codegen_nvvm](https://github.com/Rust-GPU/Rust-CUDA) (my own project), but may be useful to more codegens in the future. This is needed because cg_nvvm needs to remap certain types to libnvvm-friendly types, such as `i128` -> `<2 x i64>`. Because cg_ssa does not give mutable access to the builder, i resorted to using a mutex: ```rs fn get_param(&self, index: usize) -> Self::Value { let val = llvm::get_param(self.llfn(), index as c_uint); trace!("Get param `{:?}`", val); unsafe { let llfnty = LLVMRustGetFunctionType(self.llfn()); let map = self.remapped_integer_args.borrow(); if let Some((_, key)) = map.get(llfnty) { if let Some((_, new_ty)) = key.iter().find(|t| t.0 == index) { trace!("Casting irregular param {:?} to {:?}", val, new_ty); return transmute_llval( *self.llbuilder.lock().unwrap(), &self.cx, val, *new_ty, ); } } val } } ``` However, i predict this is pretty bad for performance, considering how much builders are called during codegen, so i would greatly appreciate having a more flexible API for this.
If the thread does not get the lock in the short term, yield the CPU Reduces on [RustyHermit](https://github.com/hermitcore/rusty-hermit) the amount of wasted processor cycles
Fix ICE due to out-of-bounds statement index when reporting borrowck error Replace an `[index]` with a `.get` when `statement_index` points to a basic-block terminator (and is therefore out-of-bounds in the statements list). Fixes rust-lang#91206 Cc ``@camsteffen`` r? ``@oli-obk``
…r, r=jsha Fix invalid scrollbar display on source code page Fixes bug introduced in rust-lang#90983:   To fix it, I simply unset the `overflow-y` on the source code page so it's not displayed anymore. r? ``@jsha``
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@bors r+ rollup=never p=4 |
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📌 Commit a9710de has been approved by |
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☀️ Test successful - checks-actions |
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Finished benchmarking commit (6d246f0): comparison url. Summary: This change led to large relevant regressions 😿 in compiler performance.
If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf. Next Steps: If you can justify the regressions found in this perf run, please indicate this with @rustbot label: +perf-regression |
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Regression seems spurious, cannot reproduce locally. Suspecting rust-lang/rustc-perf#1105. |
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