[PATCH] D77418: [mlir] LoopToStandard conversion: support "if/else" with results

[Alex Zinenko via Phabricator via llvm-commits]

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A recent extension allowed the `loop.if` operation to return results yielded by
its regions. However, such operations could not be lowered to a CFG of standard
operations because it would have required to modify the argument list of a
block, which is not allowed in a conversion pattern. Now that the conversion
infrastructure supports block creation, use it to create a block with an
argument list that dominates the operations following the `loop.if` and forward
the results as arguments of this block.

Depends On D77416 <https://reviews.llvm.org/D77416>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D77418

Files:
  mlir/lib/Conversion/LoopToStandard/LoopToStandard.cpp
  mlir/test/Conversion/convert-to-cfg.mlir

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