[all-commits] [llvm/llvm-project] 24828c: [libc] Efficiently implement `aligned_alloc` for A...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 24828c8c45d7f258159afca251aa853a5fc59150
      https://github.com/llvm/llvm-project/commit/24828c8c45d7f258159afca251aa853a5fc59150
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2025-07-02 (Wed, 02 Jul 2025)

  Changed paths:
    M libc/src/__support/GPU/allocator.cpp
    M libc/src/__support/GPU/allocator.h
    M libc/src/stdlib/gpu/aligned_alloc.cpp
    M libc/test/integration/src/stdlib/gpu/CMakeLists.txt
    A libc/test/integration/src/stdlib/gpu/aligned_alloc.cpp

  Log Message:
  -----------
  [libc] Efficiently implement `aligned_alloc` for AMDGPU (#146585)

Summary:
This patch uses the actual allocator interface to implement
`aligned_alloc`. We do this by simply rounding up the amount allocated.
Because of how index calculation works, any offset within an allocated
pointer will still map to the same chunk, so we can just adjust
internally and it will free all the same.



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