[all-commits] [llvm/llvm-project] e4fa0b: scudo: Obtain tag from pointer instead of loading ...

[pcc via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e4fa0b307f7fe2c3db7442c719f643287f08eed4
      https://github.com/llvm/llvm-project/commit/e4fa0b307f7fe2c3db7442c719f643287f08eed4
  Author: Peter Collingbourne <peter at pcc.me.uk>
  Date:   2021-04-21 (Wed, 21 Apr 2021)

  Changed paths:
    M compiler-rt/lib/scudo/standalone/combined.h

  Log Message:
  -----------
  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