tree a76196e4b24ce60c47a21acb2d32a3402e06c2f2
parent d790cf4eae49b6e2c8ab9be448166c4126245374
author Peter Collingbourne <peter@pcc.me.uk> 1619057616 -0700
committer Copybara-Service <copybara-worker@google.com> 1620612538 -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