[all-commits] [llvm/llvm-project] 50f40a: [libc] Fix internal alignment in allcoator (#146738)

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 50f40a5327ad9f8a4a57bb2bf7679f489f86b726
      https://github.com/llvm/llvm-project/commit/50f40a5327ad9f8a4a57bb2bf7679f489f86b726
  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/test/integration/src/stdlib/gpu/aligned_alloc.cpp
    M libc/test/integration/src/stdlib/gpu/malloc.cpp

  Log Message:
  -----------
  [libc] Fix internal alignment in allcoator (#146738)

Summary:
The allocator interface is supposed to have 16 byte alignment (to keep
it consistent with the CPU allocator. We could probably drop this to 8
if desires.) But this was not enforced because the number of bytes used
for the bitfield sometimes resulted in alignment of 8 instead of 16.
Explicitly align the number of bytes to be a multiple of 16 even if
unused.



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