[all-commits] [llvm/llvm-project] 3e8fc3: [CIR] Implement 'coroutine' exception handling low...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3e8fc3561fb5ccd50441804a56244fac6142e7b4
      https://github.com/llvm/llvm-project/commit/3e8fc3561fb5ccd50441804a56244fac6142e7b4
  Author: Erich Keane <ekeane at nvidia.com>
  Date:   2026-05-28 (Thu, 28 May 2026)

  Changed paths:
    M clang/include/clang/CIR/MissingFeatures.h
    M clang/lib/CIR/CodeGen/CIRGenCoroutine.cpp
    M clang/lib/CIR/CodeGen/CIRGenException.cpp
    A clang/test/CIR/CodeGen/coro-exceptions.cpp

  Log Message:
  -----------
  [CIR] Implement 'coroutine' exception handling lowering (#200045)

This patch implements the lowering to CIR for exception handling.
Unfortunately the missing components of Flatten-CFG don't work here, so
we only test that we get successfully to CIR, not to LLVM-IR.

This patch runs the 'await-resume' in a try/catch, and only if that
succeeds, does it run the coroutine body (also in a try/catch if there
is an exception handler).

This is nearly identical to the implementation in classic-codegen,
except we invert the resume-eh variable's value, so we can just use a
simple `if` op for the branch.



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