[flang-commits] [PATCH] D139020: [flang] hlfir.associate and hlfir.end_associate codegen

[Jean Perier via Phabricator via flang-commits]

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Add hlfir.associate and hlfir.end_associate codegen.
To properly allow reusing the bufferized expression storage for the
newly created variable, bufferization of hlfir.expr has to be updated
so that hlfir.expr are translated to a variable and a boolean to
indicate if the variable storage needs to be freed after the expression
was used. That way the responsibility to free the bufferized expression
can be passed to the variable user, and applied in the
hlfir.end_associate.

Right now, not of the bufferized expression are heap allocated, so
generating the conditional freemem in hlfir.end_associate is left as
a TODO for when it can be tested.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D139020

Files:
  flang/lib/Optimizer/HLFIR/Transforms/BufferizeHLFIR.cpp
  flang/test/HLFIR/associate-codegen.fir

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