[PATCH] D99981: [demangler] Support the new Rust mangling scheme (v0)

[Tomasz Miąsko via Phabricator via llvm-commits]

tmiasko created this revision.
Herald added subscribers: JDevlieghere, hiraditya, mgorny.
Herald added a reviewer: jhenderson.
tmiasko updated this revision to Diff 335675.
tmiasko edited the summary of this revision.
tmiasko added a comment.
tmiasko published this revision for review.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

...


This patch implements a demangling support for symbols using new Rust
mangling scheme (v0).

The Rust is currently migrating to this new scheme. The progress is
tracked in https://github.com/rust-lang/rust/issues/60705.

- The v0 mangling scheme uses "_R" as a prefix, which makes it easy to distinguish it from other mangling schemes.

- The public API is modeled after __cxa_demangle / llvm::itaniumDemangle, since potential candidates for further integration use those.

- The llvm-cxxfilt is extended to support Rust mangling and used to test the implementation.

- The llvm::demagle demangles Rust symbols, enabling llvm-objdump --demangle to do the same.

References (specification and relevant parts of implementation in Rust):

- https://rust-lang.github.io/rfcs/2603-rust-symbol-name-mangling-v0.html
- https://github.com/rust-lang/rust/pull/57967
- https://github.com/rust-lang/rust/pull/77554


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99981

Files:
  llvm/include/llvm/Demangle/Demangle.h
  llvm/include/llvm/Demangle/RustDemangle.h
  llvm/include/llvm/Demangle/Utility.h
  llvm/lib/Demangle/CMakeLists.txt
  llvm/lib/Demangle/Demangle.cpp
  llvm/lib/Demangle/RustDemangle.cpp
  llvm/test/tools/llvm-cxxfilt/rust.test
  llvm/tools/llvm-cxxfilt/llvm-cxxfilt.cpp
  llvm/tools/llvm-rust-demangle-fuzzer/CMakeLists.txt
  llvm/tools/llvm-rust-demangle-fuzzer/DummyDemanglerFuzzer.cpp
  llvm/tools/llvm-rust-demangle-fuzzer/llvm-rust-demangle-fuzzer.cpp
  llvm/unittests/Demangle/CMakeLists.txt
  llvm/unittests/Demangle/DemangleTest.cpp
  llvm/unittests/Demangle/RustDemangleTest.cpp

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D99981.335675.patch
Type: text/x-patch
Size: 47994 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210406/414a9cb8/attachment.bin>