rust/compiler/rustc_llvm/llvm-wrapper
Matthias Krüger d774fbea7c
Rollup merge of #119365 - nbdd0121:asm-goto, r=Amanieu
Add asm goto support to `asm!`

Tracking issue: #119364

This PR implements asm-goto support, using the syntax described in "future possibilities" section of [RFC2873](https://rust-lang.github.io/rfcs/2873-inline-asm.html#asm-goto).

Currently I have only implemented the `label` part, not the `fallthrough` part (i.e. fallthrough is implicit). This doesn't reduce the expressive though, since you can use label-break to get arbitrary control flow or simply set a value and rely on jump threading optimisation to get the desired control flow. I can add that later if deemed necessary.

r? ``@Amanieu``
cc ``@ojeda``
2024-03-08 08:19:17 +01:00
..
.editorconfig
ArchiveWrapper.cpp llvm-wrapper: fix warning C4305 2024-02-21 13:13:50 +03:00
CoverageMappingWrapper.cpp Explicitly assign constructed C++ classes 2024-03-05 21:15:56 -08:00
Linker.cpp
LLVMWrapper.h
PassWrapper.cpp Explicitly assign constructed C++ classes 2024-03-05 21:15:56 -08:00
README
RustWrapper.cpp Rollup merge of #119365 - nbdd0121:asm-goto, r=Amanieu 2024-03-08 08:19:17 +01:00
SuppressLLVMWarnings.h
SymbolWrapper.cpp Explicitly assign constructed C++ classes 2024-03-05 21:15:56 -08:00

This directory currently contains some LLVM support code. This will generally
be sent upstream to LLVM in time; for now it lives here.

NOTE: the LLVM C++ ABI is subject to between-version breakage and must *never*
be exposed to Rust. To allow for easy auditing of that, all Rust-exposed types
must be typedef-ed as "LLVMXyz", or "LLVMRustXyz" if they were defined here.

Functions that return a failure status and leave the error in
the LLVM last error should return an LLVMRustResult rather than an
int or anything to avoid confusion.

When translating enums, add a single `Other` variant as the first
one to allow for new variants to be added. It should abort when used
as an input.

All other types must not be typedef-ed as such.