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rust/compiler/rustc_codegen_ssa
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bors e61403aa4c Auto merge of #138634 - saethlin:repeated-uninit, r=scottmcm,oli-obk 
Lower to a memset(undef) when Rvalue::Repeat repeats uninit

Fixes https://github.com/rust-lang/rust/issues/138625.

It is technically correct to just do nothing. But if we actually do nothing, we may miss that this is de-initializing something, so instead we just lower to a single memset that writes undef. This is still superior to the memcpy loop, in both quality of code we hand to the backend and LLVM's final output.
2025-03-25 02:09:15 +00:00
..
src Auto merge of #138634 - saethlin:repeated-uninit, r=scottmcm,oli-obk 2025-03-25 02:09:15 +00:00
Cargo.toml Use -Wunused_crate_dependencies for compiler crates. 2025-03-20 08:59:43 +11:00
messages.ftl Make some invalid codegen attr errors structured/translatable 2025-03-07 23:26:48 +00:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

README.md

Please read the rustc-dev-guide chapter on Backend Agnostic Codegen.