tree 1fac9487fe2ca0c729ad8a2c6c4af465beb91296
parent 09a1a75e84401c325e5f82cda0f0e0c65fa8e2c2
author Erik Pilkington <erik.pilkington@gmail.com> 1547757471 +0000
committer Erik Pilkington <erik.pilkington@gmail.com> 1547757471 +0000

NFC: Make the copies of the demangler byte-for-byte identical

With this patch, the copies of the files ItaniumDemangle.h,
StringView.h, and Utility.h are kept byte-for-byte in sync between
libcxxabi and llvm. All differences (namespaces, fallthrough, and
unreachable macros) are defined in each copies' DemanglerConfig.h.

This patch also adds a script to copy changes from libcxxabi
(cp-to-llvm.sh), and a README.txt explaining the situation.

Differential revision: https://reviews.llvm.org/D53538

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351474 91177308-0d34-0410-b5e6-96231b3b80d8