[all-commits] [llvm/llvm-project] b350be: [mlir-c] Expose hard-failure state in 1:N type con...

[Maksim Levental via All-commits]

  Branch: refs/heads/users/makslevental/mlir-c-typeconverter-1ton
  Home:   https://github.com/llvm/llvm-project
  Commit: b350beaab5e09c9d25336b0351be6a34b2d1b272
      https://github.com/llvm/llvm-project/commit/b350beaab5e09c9d25336b0351be6a34b2d1b272
  Author: makslevental <maksim.levental at gmail.com>
  Date:   2026-07-18 (Sat, 18 Jul 2026)

  Changed paths:
    M mlir/include/mlir-c/Rewrite.h
    M mlir/lib/CAPI/Transforms/Rewrite.cpp
    M mlir/test/CAPI/rewrite.c

  Log Message:
  -----------
  [mlir-c] Expose hard-failure state in 1:N type conversion callback

The 1:N conversion callback returned MlirLogicalResult, which the binding
could only map to success or nullopt (try-another), leaving the C++
failure() state (fail without trying another conversion) unreachable.

Return a MlirTypeConverterConversionStatus enum instead, with Success,
Failure, and Declined states mapped to success(), failure(), and
std::nullopt respectively. Add a test covering the hard-failure path.



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