[PATCH] D39469: [asan] Add CMake hook to override default shadow scale

[Walter Lee via Phabricator via llvm-commits]

waltl added a comment.

In https://reviews.llvm.org/D39469#919730, @vitalybuka wrote:

> Can you explain or point to use-case where 5 is better than 3?


See http://lists.llvm.org/pipermail/llvm-dev/2017-October/118679.html for background.  The end-goal for me is to port ASan to an embedding platform that has no virtual memory and limited memory, where reserving 12.5% of the memory for shadow memory is too high.  Getting this to work for x86 is only a small amount of extra work and gives me a way to test/validate the changes in the community.


https://reviews.llvm.org/D39469