[flang-commits] [flang] [Flang] Add perfect-nest and rectangular-loop semantic tests (PR #160283)

[LLVM Continuous Integration via flang-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-sve-vla` running on `linaro-g3-01` while building `flang` at step 14 "test-suite".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/17/builds/11445

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 14 (test-suite) failure: test (failure)
******************** TEST 'test-suite :: Fortran/gfortran/regression/gomp/gfortran-regression-compile-regression__gomp__canonical-loop-1_f90.test' FAILED ********************

/home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/sandbox/build/tools/timeit-target --timeout 7200 --limit-core 0 --limit-cpu 7200 --limit-file-size 209715200 --limit-rss-size 838860800 --redirect-input /dev/null --summary /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/sandbox/build/Fortran/gfortran/regression/gomp/Output/gfortran-regression-compile-regression__gomp__canonical-loop-1_f90.test.time /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/sandbox/build/Fortran/gfortran/regression/gomp/../..//dummy
/usr/bin/diff /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/sandbox/build/Fortran/gfortran/regression/gomp/../..//gfortran-compile-empty.reference.out /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/sandbox/build/Fortran/gfortran/regression/gomp/gfortran-regression-compile-regression__gomp__canonical-loop-1_f90.out
0a1,94
> error: Semantic errors in /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:17:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:23:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:29:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:35:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:41:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:47:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:53:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:59:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:65:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:71:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:77:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:83:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:89:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:95:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
>           ^^
> /home/tcwg-buildbot/worker/clang-aarch64-sve-vla/test/test-suite/Fortran/gfortran/regression/gomp/canonical-loop-1.f90:101:9: error: Trip count must be computable and invariant
>     !$omp do collapse(2)
...

```

</details>

https://github.com/llvm/llvm-project/pull/160283