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Jonathan Brouwer
ff42fc00d4
Emit retags in codegen to support BorrowSanitizer (part 1) Tracking issue: rust-lang/rust#154760 [Zulip Thread](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/Staging.20for.20emitting.20retags.20in.20codegen/with/593004012) This is the first of several PRs that will add experimental support for emitting retags as function calls in codegen. Each PR will be a minimal, improved slice of the changes in rust-lang/rust#155965. This PR contains all of the changes that will affect codegen backends. It adds methods to `IntrinsicCallBuilderMethods` for emitting each kind of retag call. cc: @RalfJung
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.