[all-commits] [llvm/llvm-project] 006037: [mlir][OpenMP] Use correct debug location with lin...

[Abid Qadeer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 006037675c10b20d33a2a3c273bf3cdb8b0a252c
      https://github.com/llvm/llvm-project/commit/006037675c10b20d33a2a3c273bf3cdb8b0a252c
  Author: Abid Qadeer <haqadeer at amd.com>
  Date:   2025-06-25 (Wed, 25 Jun 2025)

  Changed paths:
    M mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
    A mlir/test/Target/LLVMIR/omptarget-debug-map-link-loc.mlir

  Log Message:
  -----------
  [mlir][OpenMP] Use correct debug location with link clause. (#145026)

Please see the following program.

```
module test_0
    INTEGER :: sp = 1
!$omp declare target link(sp)
end module test_0

program main
use test_0
integer :: new_len

!$omp target map(tofrom:new_len) map(tofrom:sp)
    new_len = sp
!$omp end target

  print *, new_len
  print *, sp
end program
```

When compiled with
`flang -g -O0 -fopenmp --offload-arch=gfx1100`

will fail the compilation with the following error:

`dbg attachment points at wrong subprogram for function`

The reason is that with the `link` clause on `!$omp declare target`, an
extra load instruction is inserted. But the debug location was not
updated before insertion which caused an invalid location to be attached
to the instruction.



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