tree d8d634b56232826563f91a0922540f5756feb352
parent 34c8857fef28eab205c22cbfb4bfda2f848e5a80
author Peter Collingbourne <peter@pcc.me.uk> 1619057616 -0700
committer Peter Collingbourne <pcc@google.com> 1619132476 -0700

scudo: Obtain tag from pointer instead of loading it from memory. NFCI.

Since we already have a tagged pointer available to us, we can just
extract the tag from it and avoid an LDG instruction.

Differential Revision: https://reviews.llvm.org/D101014

GitOrigin-RevId: e4fa0b307f7fe2c3db7442c719f643287f08eed4
Change-Id: Iddfb211bb01477dc515118479344e6eb22c4e041