[all-commits] [llvm/llvm-project] 35c7df: [aarch64][arm] Add support for the _Interlocked[Co...

[Daniel Paoliello via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 35c7df1a219e99bc0e2aa2034e77f4e9c90566d3
      https://github.com/llvm/llvm-project/commit/35c7df1a219e99bc0e2aa2034e77f4e9c90566d3
  Author: Daniel Paoliello <danpao at microsoft.com>
  Date:   2024-12-04 (Wed, 04 Dec 2024)

  Changed paths:
    M clang/include/clang/Basic/BuiltinsAArch64.def
    M clang/include/clang/Basic/BuiltinsARM.def
    M clang/lib/CodeGen/CGBuiltin.cpp
    M clang/lib/Headers/intrin0.h
    M clang/test/CodeGen/ms-intrinsics.c

  Log Message:
  -----------
  [aarch64][arm] Add support for the _Interlocked[Compare]ExchangePointer_{acq|nf|rel} MS intrinsics (#117645)

Adds support for the following MSVC intrinsics:
* `_InterlockedCompareExchangePointer_acq`
* `_InterlockedCompareExchangePointer_rel`
* `_InterlockedExchangePointer_acq`
* `_InterlockedExchangePointer_nf`
* `_InterlockedExchangePointer_rel`

These are documented at:
<https://learn.microsoft.com/en-us/cpp/intrinsics/arm64-intrinsics?view=msvc-170#interlocked-intrinsics>

NOTE: `_InterlockedCompareExchangePointer_nf` is not being added since
it already exists, although it was incorrectly added for all
architectures instead of being Arm & AArch64 specific.

This change also unifies how the pointer and non-pointer interlocked
compare-exchange intrinsics are being handled.



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