rust - https://github.com/rust-lang/rust

Age	Commit message (Collapse)	Author	Lines
2024-05-31	Run rustfmt on `tests/codegen/`.	Nicholas Nethercote	-12/+18
	Except for `simd-intrinsic/`, which has a lot of files containing multiple types like `u8x64` which really are better when hand-formatted. There is a surprising amount of two-space indenting in this directory. Non-trivial changes: - `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the test. - `rustfmt::skip` used in a few places where hand-formatting read more nicely: `enum/enum-match.rs` - Line number adjustments needed for the expected output of `debug-column.rs` and `coroutine-debug.rs`.
2024-04-08	Fix argument ABI for overaligned structs on ppc64le	Nikita Popov	-0/+93
	When passing a 16 (or higher) aligned struct by value on ppc64le, it needs to be passed as an array of `i128` rather than an array of `i64`. This will force the use of an even starting register. For the case of a 16 byte struct with alignment 16 it is important that `[1 x i128]` is used instead of `i128` -- apparently, the latter will get treated similarly to `[2 x i64]`, not exhibiting the correct ABI. Add a `force_array` flag to `Uniform` to support this. The relevant clang code can be found here: https://github.com/llvm/llvm-project/blob/fe2119a7b08b6e468b2a67768904ea85b1bf0a45/clang/lib/CodeGen/Targets/PPC.cpp#L878-L884 https://github.com/llvm/llvm-project/blob/fe2119a7b08b6e468b2a67768904ea85b1bf0a45/clang/lib/CodeGen/Targets/PPC.cpp#L780-L784 I think the corresponding psABI wording is this: > Fixed size aggregates and unions passed by value are mapped to as > many doublewords of the parameter save area as the value uses in > memory. Aggregrates and unions are aligned according to their > alignment requirements. This may result in doublewords being > skipped for alignment. In particular the last sentence. Fixes https://github.com/rust-lang/rust/issues/122767.