[all-commits] [llvm/llvm-project] ed8e85: [flang][hlfir] deref pointers before lowering assi...

[jeanPerier via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ed8e858a1478d18d321f104a86a579e03ba1886e
      https://github.com/llvm/llvm-project/commit/ed8e858a1478d18d321f104a86a579e03ba1886e
  Author: Jean Perier <jperier at nvidia.com>
  Date:   2023-02-06 (Mon, 06 Feb 2023)

  Changed paths:
    M flang/lib/Lower/Bridge.cpp
    M flang/lib/Optimizer/Builder/HLFIRTools.cpp
    M flang/test/Lower/HLFIR/allocatable-and-pointer-subparts.f90
    M flang/test/Lower/HLFIR/assignment-intrinsics.f90

  Log Message:
  -----------
  [flang][hlfir] deref pointers before lowering assignment to hlfir.assign

There is little point not to dereference pointers LHS and RHS before
before emitting an hlfir.assign when lowering an assignment.
This pushes complexity and descriptor read side effects that are better
expressed in a load before the assignment.

Differential Revision: https://reviews.llvm.org/D143372