[all-commits] [llvm/llvm-project] 355dbb: [flang][FIR] enable fir.box_addr codegen inside fi...

[jeanPerier via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 355dbbc37c7221b5c8d55278b021b8b60c19ff2d
      https://github.com/llvm/llvm-project/commit/355dbbc37c7221b5c8d55278b021b8b60c19ff2d
  Author: jeanPerier <jperier at nvidia.com>
  Date:   2025-09-08 (Mon, 08 Sep 2025)

  Changed paths:
    M flang/lib/Optimizer/CodeGen/CodeGen.cpp
    A flang/test/Fir/box_addr-codegen-in-global.fir

  Log Message:
  -----------
  [flang][FIR] enable fir.box_addr codegen inside fir.global (#157120)

FIR lowering of the fir.box type inside fir.global is special (it is an
actual descriptor struct value instead of being a descriptor in memory)
and causes builtin.unrealized_conversion_cast to be inserted under the
hood by MLIR dialect conversion framework after each operation producing
a fir.box is translated. These builtin.unrealized_conversion_cast must
be removed before the code generation of operation of using the fir.box
in order to get the right "by value" code generation required in global
initial value definitions.



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