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rust/compiler/rustc_codegen_llvm
Matthias Krüger 6a66a270b0
Rollup merge of #136180 - lukas-code:typed-valtree, r=oli-obk
Introduce a wrapper for "typed valtrees" and properly check the type before extracting the value

This PR adds a new wrapper type `ty::Value` to replace the tuple `(Ty, ty::ValTree)` and become the new canonical representation of type-level constant values.

The value extraction methods `try_to_bits`/`try_to_bool`/`try_to_target_usize` are moved to this new type. For `try_to_bits` in particular, this avoids some redundant matches on `ty::ConstKind::Value`. Furthermore, these methods and will now properly check the type before extracting the value, which fixes some ICEs.

The name `ty::Value` was chosen to be consistent with `ty::Expr`.

Commit 1 should be non-functional and commit 2 adds the type check.

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fixes https://github.com/rust-lang/rust/issues/131102
supercedes https://github.com/rust-lang/rust/pull/136130

r? `@oli-obk`
cc `@FedericoBruzzone` `@BoxyUwU`
2025-01-30 20:47:07 +01:00
..
src Rollup merge of #136180 - lukas-code:typed-valtree, r=oli-obk 2025-01-30 20:47:07 +01:00
Cargo.toml Note that cg_llvm's gimli should match the version used elsewhere 2025-01-21 14:41:44 +11:00
messages.ftl Auto merge of #134794 - RalfJung:abi-required-target-features, r=workingjubilee 2025-01-05 23:21:06 +00:00
README.md

The codegen crate contains the code to convert from MIR into LLVM IR, and then from LLVM IR into machine code. In general it contains code that runs towards the end of the compilation process.

For more information about how codegen works, see the rustc dev guide.