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6f1bbf5ee0
Make to_immediate/from_immediate configurable by backends `librustc_codegen_ssa` has the concept of an immediate vs. memory type, and `librustc_codegen_llvm` uses this distinction to implement `bool`s being `i8` in memory, and `i1` in immediate contexts. However, some of that implementation leaked into `codegen_ssa` when converting to/from immediate values. So, move those methods into builder traits, so that behavior can be configured by backends. This is useful if a backend is able to keep bools as bools, or, needs to do more trickery than just bools to bytes. (Note that there's already a large amount of things abstracted with "immediate types" - this is just bringing this particular thing in line to be abstracted as well) --- Pinging @eddyb since that's who I was talking about this change with when they suggested I submit a PR. |
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| Cargo.toml | ||
| README.md | ||
Please read the rustc-dev-guide chapter on Backend Agnostic Codegen.