[all-commits] [llvm/llvm-project] 8233c3: tsan: add notion of compressed addresses

[Dmitry Vyukov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8233c343ad818f6f0204cebf7ab9fe688ca31b7f
      https://github.com/llvm/llvm-project/commit/8233c343ad818f6f0204cebf7ab9fe688ca31b7f
  Author: Dmitry Vyukov <dvyukov at google.com>
  Date:   2021-08-10 (Tue, 10 Aug 2021)

  Changed paths:
    M compiler-rt/lib/tsan/rtl/tsan_defs.h
    M compiler-rt/lib/tsan/rtl/tsan_platform.h
    M compiler-rt/lib/tsan/tests/unit/tsan_shadow_test.cpp

  Log Message:
  -----------
  tsan: add notion of compressed addresses

New tsan runtime will need to compress addresses/PCs to fewer bits.
Add CompressAddr/RestoreAddr functions that compress/restore
addresses to 44 bits.

Depends on D107744.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D107745