[PATCH] D26358: [scudo] 32-bit and hardware agnostic support

[Kostya Kortchinsky via Phabricator via llvm-commits]

cryptoad updated this revision to Diff 79468.
cryptoad added a comment.

After internal discussions, extend a bit this patch with regard to SSE 4.2

We changed the SSE 4.2 logic to no longer be required, but be optional.
We now check if -msse4.2 is supported by the compiler, and emit the hardware
optimized CRC32 code if it is (-msse4.2 was compulsory before). At runtime, we
check for CPU support.

This introduces a couple of ifdef in the checkum function, gets rid of the
/proc/cpuinfo cmake test.

This would allow the allocator to run on a wider range of hardware.


https://reviews.llvm.org/D26358

Files:
  cmake/config-ix.cmake
  lib/scudo/CMakeLists.txt
  lib/scudo/scudo_allocator.cpp
  lib/scudo/scudo_allocator.h
  lib/scudo/scudo_allocator_secondary.h
  lib/scudo/scudo_flags.cpp
  lib/scudo/scudo_flags.h
  lib/scudo/scudo_interceptors.cpp
  lib/scudo/scudo_new_delete.cpp
  lib/scudo/scudo_termination.cpp
  lib/scudo/scudo_utils.cpp
  lib/scudo/scudo_utils.h
  test/scudo/CMakeLists.txt
  test/scudo/alignment.cpp
  test/scudo/double-free.cpp
  test/scudo/interface.cpp
  test/scudo/lit.cfg
  test/scudo/lit.site.cfg.in
  test/scudo/malloc.cpp
  test/scudo/memalign.cpp
  test/scudo/mismatch.cpp
  test/scudo/overflow.cpp
  test/scudo/preinit.cpp
  test/scudo/random_shuffle.cpp
  test/scudo/realloc.cpp

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