[all-commits] [llvm/llvm-project] 978191: [CIR] Initialization of atomic aggregates with pad...

[Sirui Mu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 978191848cdb929f85c76bbf54b0666971328c59
      https://github.com/llvm/llvm-project/commit/978191848cdb929f85c76bbf54b0666971328c59
  Author: Sirui Mu <msrlancern at gmail.com>
  Date:   2026-06-06 (Sat, 06 Jun 2026)

  Changed paths:
    M clang/lib/CIR/CodeGen/CIRGenAtomic.cpp
    M clang/lib/CIR/CodeGen/CIRGenBuilder.h
    M clang/lib/CIR/CodeGen/CIRGenTypes.cpp
    M clang/test/CIR/CodeGen/atomic.c

  Log Message:
  -----------
  [CIR] Initialization of atomic aggregates with padding (#200668)

This patch adds support for the initialization of atomic aggregates with
padding. The changes include:

- During CIRGen, the type `_Atomic(T)` is represented by a CIR struct
`{T, sint8[padding_size]}` if the size of `_Atomic(T)` does not match
the size of `T`. `padding_size` is the difference between the size of
`_Atomic(T)` and `T`.
- CIRGen for the initialization process is updated to handle the
initialization of such CIR struct values.



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