tree eb60295dc6a0a8a11980021912e0653efd207d9d
parent 5ff896dc6b9bac2ed8a92690cc8001114caa5583
author Peter Collingbourne <peter@pcc.me.uk> 1618955621 -0700
committer Copybara-Service <copybara-worker@google.com> 1620612531 -0700

scudo: Use DC GZVA instruction in storeTags().

DC GZVA can operate on multiple granules at a time (corresponding to
the CPU's cache line size) so we can generally expect it to be faster
than STZG in a loop.

Differential Revision: https://reviews.llvm.org/D100910

GitOrigin-RevId: 46c59d91dc7a39cc98be7a68d6dc60f3e8a35df0