[all-commits] [llvm/llvm-project] e779d5: [flang][hlfir] Preserve hlfir.assign in the buffer...

[jeanPerier via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e779d54d2137c918572f4a70bf5c9341500fab6b
      https://github.com/llvm/llvm-project/commit/e779d54d2137c918572f4a70bf5c9341500fab6b
  Author: Jean Perier <jperier at nvidia.com>
  Date:   2023-04-17 (Mon, 17 Apr 2023)

  Changed paths:
    M flang/lib/Optimizer/HLFIR/Transforms/BufferizeHLFIR.cpp
    A flang/test/HLFIR/assign-bufferize.fir

  Log Message:
  -----------
  [flang][hlfir] Preserve hlfir.assign in the bufferize-hlfir pass

hlfir.assign must be rewritten in the bufferize pass since its operands,
that can be expressions, may have been updated. This is just
an operand update rewrite. The previous code was replacing the
operation, but it was dropping all hlfir.assign on the floor doing
so. This broke allocatable assignment semantics that use attributes.

Update the operands in place instead to preserve the attributes, if any.

Differential Revision: https://reviews.llvm.org/D148310