[all-commits] [llvm/llvm-project] 937027: [Support] Redefine endianness::native (#67876)

[Kazu Hirata via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9370271ec5debcb59e34629d5bd357c44213b2d3
      https://github.com/llvm/llvm-project/commit/9370271ec5debcb59e34629d5bd357c44213b2d3
  Author: Kazu Hirata <kazu at google.com>
  Date:   2023-10-03 (Tue, 03 Oct 2023)

  Changed paths:
    M llvm/include/llvm/Support/Endian.h
    M llvm/include/llvm/Support/HashBuilder.h
    M llvm/lib/ExecutionEngine/JITLink/aarch32.cpp

  Log Message:
  -----------
  [Support] Redefine endianness::native (#67876)

We should eventually migrate llvm::support::endianness to std::endian
when C++20 is available for the codebase.

This patch prepares our codebase for that future by removing the
assumption that native is a unique value different from both big and
little.  Note that in C++20, native is equal to either big or little
on typical machines, where the endianness is the same for all scalar
types.