[PATCH] D36587: Add NetBSD ASAN shadow mapping for x86-64

[Evgenii Stepanov via Phabricator via llvm-commits]

eugenis added a comment.

It's just an address where a shadow-sized hole is most like to be found.
But there are other considerations. For example,  0x7FFF8000 is the highest (or close to highest) address that allows shorter instruction encoding on x86_64.  Zero offset is typically not used (even though it is usually the fastest option) because it conflicts with MAP_32BIT.


Repository:
  rL LLVM

https://reviews.llvm.org/D36587