LLVM: omit memset of 0xaa bytes in unsafe optimization modes
This is one out of three changes I intend to make to address #11498.
However I will put these changes in separate branches and merge them
separately so that we can have three independent points on the perf
charts.
83beed09e1Andrew Kelley committed on 5/31/2022, 7:39:14 AMparentc3ef4ac