[flang-commits] [flang] [flang][lowering] Implement component-wise initialization for derived types (PR #187465)

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refuseno wrote:

@jeanPerier Thanks for the guidance! I've updated the PR based on your advice.

Here is the refined logic:
- Component-wise init now only kicks in if the derived type has pointer/allocatable components AND zero explicit initialization.
- For derived type array components, I'm not sure if a runtime call is better than current global + memcpy. So, I'll fall back to the global + memcpy approach when an array of derived types is involved.

Could you please review these changes at your convenience? Thanks again for your help!

https://github.com/llvm/llvm-project/pull/187465