[all-commits] [llvm/llvm-project] 5b6f3f: [flang] Lower BIND(C) assumed length to CFI descri...

[jeanPerier via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5b6f3fcb48e9476c8780f7c5f4abb8f2e348fc0d
      https://github.com/llvm/llvm-project/commit/5b6f3fcb48e9476c8780f7c5f4abb8f2e348fc0d
  Author: jeanPerier <jperier at nvidia.com>
  Date:   2023-09-12 (Tue, 12 Sep 2023)

  Changed paths:
    M flang/lib/Lower/CallInterface.cpp
    M flang/lib/Lower/ConvertVariable.cpp
    M flang/lib/Optimizer/Builder/BoxValue.cpp
    A flang/test/Lower/HLFIR/bindc-assumed-length.f90

  Log Message:
  -----------
  [flang] Lower BIND(C) assumed length to CFI descriptor (#65950)

Outside of BIND(C), assumed length character scalar and explicit shape
are passed by address + an extra length argument (fir.boxchar in FIR).

The standard mandates that they be passed via CFI descriptor in BIND(C)
interface (fir.box in FIR). This patch fix the handling for this case.