[all-commits] [llvm/llvm-project] 9f709f: [flang][OpenACC] Fix host fallback for acc.atomic....

[ES3Q via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9f709fbfe8a300257ee844ff64dda8a027e4ea73
      https://github.com/llvm/llvm-project/commit/9f709fbfe8a300257ee844ff64dda8a027e4ea73
  Author: ES3Q <qq571253675 at gmail.com>
  Date:   2026-07-08 (Wed, 08 Jul 2026)

  Changed paths:
    M mlir/lib/Dialect/OpenACC/Transforms/ACCSpecializeForHost.cpp
    M mlir/test/Dialect/OpenACC/acc-specialize-for-host-fallback.mlir

  Log Message:
  -----------
  [flang][OpenACC] Fix host fallback for acc.atomic.update (#207597)

The host fallback for `acc.atomic.update` only processed the first
operation in the region and used its result for the store, ignoring the
remaining operations and the `acc.yield` terminator. This generated
invalid IR when the region contained multiple operations.

1.Fix this by cloning all operations in the region and using the operand
of `acc.yield` as the final result to store.
2.Add tests for atomic read, write, update, and capture operations to
cover the host fallback path.

---------

Co-authored-by: ES3Q <ES3Q at QQ.COM>



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