[all-commits] [llvm/llvm-project] 3ff3b2: [flang] lower remaining cases of pointer assignmen...

[jeanPerier via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3ff3b29dd62436e34d7e6551398c3a09fb590c07
      https://github.com/llvm/llvm-project/commit/3ff3b29dd62436e34d7e6551398c3a09fb590c07
  Author: jeanPerier <jperier at nvidia.com>
  Date:   2025-03-14 (Fri, 14 Mar 2025)

  Changed paths:
    M flang/include/flang/Optimizer/Builder/FIRBuilder.h
    M flang/lib/Lower/Bridge.cpp
    M flang/lib/Lower/ConvertVariable.cpp
    M flang/lib/Optimizer/Builder/FIRBuilder.cpp
    A flang/test/HLFIR/order_assignments/forall-pointer-assignment-scheduling-bounds.f90
    A flang/test/HLFIR/order_assignments/forall-pointer-assignment-scheduling-polymorphic.f90
    M flang/test/HLFIR/order_assignments/forall-pointer-assignment-scheduling.f90
    M flang/test/HLFIR/order_assignments/forall-proc-pointer-assignment-scheduling.f90
    M flang/test/Lower/OpenACC/acc-enter-data-unwrap-defaultbounds.f90
    M flang/test/Lower/OpenACC/acc-enter-data.f90

  Log Message:
  -----------
  [flang] lower remaining cases of pointer assignments inside forall (#130772)

Implement handling of `NULL()` RHS, polymorphic pointers, as well as
lower bounds or bounds remapping in pointer assignment inside FORALL.

These cases eventually do not require updating hlfir.region_assign,
lowering can simply prepare the new descriptor for the LHS inside the
RHS region.

Looking more closely at the polymorphic cases, there is not need to call
the runtime, fir.rebox and fir.embox do handle the dynamic type setting
correctly.

After this patch, the last remaining TODO is the allocatable assignment
inside FORALL, which like some cases here, is more likely an accidental
feature given FORALL was deprecated in F2003 at the same time than
allocatable components where added.



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