rust/compiler/rustc_llvm/llvm-wrapper
Michael Goulet 4a24aab220
Rollup merge of #96971 - zhaixiaojuan:master, r=wesleywiser
Initial support for loongarch64-unknown-linux-gnu

Hi, We hope to add a new port in rust for LoongArch.

LoongArch intro
LoongArch is a RISC style ISA which is independently designed by Loongson
Technology in China. It is divided into two versions, the 32-bit version (LA32)
and the 64-bit version (LA64). LA64 applications have application-level
backward binary compatibility with LA32 applications. LoongArch is composed of
a basic part (Loongson Base) and an expanded part. The expansion part includes
Loongson Binary Translation (LBT), Loongson VirtualiZation (LVZ), Loongson SIMD
EXtension (LSX) and Loongson Advanced SIMD EXtension(LASX).

Currently the LA464 processor core supports LoongArch ISA and the Loongson
3A5000 processor integrates 4 64-bit LA464 cores. LA464 is a four-issue 64-bit
high-performance processor core. It can be used as a single core for high-end
embedded and desktop applications, or as a basic processor core to form an
on-chip multi-core system for server and high-performance machine applications.

Documentations:
ISA:
https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html
ABI:
https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
More docs can be found at:
https://loongson.github.io/LoongArch-Documentation/README-EN.html

Since last year, we have locally adapted two versions of rust, rust1.41 and rust1.57, and completed the test locally.
I'm not sure if I'm submitting all the patches at once, so I split up the patches and here's one of the commits
2023-04-11 20:28:45 -07:00
..
.editorconfig
ArchiveWrapper.cpp
CoverageMappingWrapper.cpp rustc_llvm: replace llvm::makeArrayRef with ArrayRef constructors. 2023-01-11 11:25:15 -05:00
Linker.cpp
LLVMWrapper.h record llvm cgu instruction stats 2023-02-25 16:18:56 +08:00
PassWrapper.cpp Rollup merge of #96971 - zhaixiaojuan:master, r=wesleywiser 2023-04-11 20:28:45 -07:00
README
RustWrapper.cpp Auto merge of #109862 - klensy:llvm-dd, r=nikic 2023-04-08 15:57:59 +00:00
SymbolWrapper.cpp Remove an extraneous include 2023-03-07 22:46:39 -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.