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rust/compiler/rustc_codegen_ssa
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bors 31d74fb24b Auto merge of #109220 - nikic:poison, r=cuviper 
Use poison instead of undef

In cases where it is legal, we should prefer poison values over undef values.

This replaces undef with poison for aggregate construction and for uninhabited types. There are more places where we can likely use poison, but I wanted to stay conservative to start with.

In particular the aggregate case is important for newer LLVM versions, which are not able to handle an undef base value during early optimization due to poison-propagation concerns.

r? `@cuviper`
2023-03-24 15:39:40 +00:00
..
src Auto merge of #109220 - nikic:poison, r=cuviper 2023-03-24 15:39:40 +00:00
Cargo.toml remove unused imports 2023-02-06 17:40:18 +03:00
messages.ftl Simplify message paths 2023-03-11 22:51:57 +01:00
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.