[hwasan] Add __hwasan_handle_longjmp.
Summary:
A callback to annotate longjmp-like code.
Unlike __asan_handle_no_return, in hwasan we can not conservatively
"unpoison" the entire thread stack, because there is no such thing as
unpoisoned memory. Pointer and memory tags must always match.
Reviewers: vitalybuka, kcc
Subscribers: kubamracek, llvm-commits
Differential Revision: https://reviews.llvm.org/D50752
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@339935 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed
