Differential D5929
RFC: Switch to NetBSD's version of LLVM libunwind Authored by emaste on Apr 12 2016, 8:04 PM.
Details
NetBSD trimmed down LLVM's libunwind, removing the HP libunwind non-local unwind support. It also has significantly reduced stack usage. See the thread at http://lists.llvm.org/pipermail/llvm-dev/2016-January/094202.html. Posting now for comments and testing.
Diff Detail
Event TimelineComment Actions NetBSD's libunwind version also has broader architecture support than LLVM's. However, it lacks arm EHABI support - NetBSD uses the same dwarf unwind info on all platforms.
Comment Actions
NetBSD made the change here: http://reviews.llvm.org/rL208166 I'm not sure what we should do about this; we can consider following suit but I'm unsure what to do about backwards compatibility. Comment Actions LLVM's libunwind now includes changes to reduce stack usage and include only native unwinding support. It's not quite as straightforward as NetBSD's take, but it does include ARM EHABI and Apple Compact Unwind support that we might like to use later on. | ||||||||||||||||||||||||||||