[flang][tests] Enable some fixed tests, disable some with valid new errors

[klausler]

Summary

Many gfortran regression tests that were disabled because they failed
have been fixed in llvm-project/main, and can now be removed from the
DisabledFiles.cmake file. Some tests that were compiling and running
no longer do so because they contain valid errors that are now detected
by flang at compilation time.

[tarunprabhu]

Adding additional reviewers who can check that enabling these works on ARM.

[klausler]

In D157457#4573073, @tarunprabhu wrote:

Adding additional reviewers who can check that enabling these works on ARM.

Time is of the essence; there is a Clang build bot that is failing because it needs to run the test suite against an f18 compiler that it builds as a test.

If you have no objection, I'm going to push this patch soon, and you can do a post-commit review.

[kiranchandramohan]

Tests passed on AArch64 for me.

I have an unrelated issue for regression__assign_3_f90. This is not related to this change.

[tblah]

Works with HLFIR for me +1

Fortran/gfortran/regression/DisabledFiles.cmake

file(GLOB UNIMPLEMENTED_FILES CONFIGURE_DEPENDS
   assumed_rank_20.f90
   assumed_rank_5.f90
   assumed_type_9.f90
   bind-c-contiguous-2.f90
   interface_49.f90
   is_contiguous_2.f90
   pr103366.f90
   pr84088.f90
+  pr88932.f90
   pr92277.f90
   pr95828.f90
   select_rank_5.f90
   sizeof_4.f90
   sizeof_6.f90
 
   # unimplemented: ASYNCHRONOUS in procedure interface
   assumed_rank_13.f90
file(GLOB UNIMPLEMENTED_FILES CONFIGURE_DEPENDS
   proc_ptr_28.f90
   proc_ptr_3.f90
   proc_ptr_30.f90
   proc_ptr_31.f90
   proc_ptr_34.f90
   proc_ptr_39.f90
   proc_ptr_42.f90
   proc_ptr_43.f90
+  proc_ptr_45.f90
   proc_ptr_5.f90
   proc_ptr_51.f90
   proc_ptr_comp_10.f90
   proc_ptr_comp_8.f90
   proc_ptr_comp_9.f90
   proc_ptr_result_3.f90
   recursive_check_4.f03
   recursive_check_5.f03
file(GLOB UNIMPLEMENTED_FILES CONFIGURE_DEPENDS
   alloc_comp_deep_copy_1.f03
   allocate_alloc_opt_12.f90
   allocate_alloc_opt_13.f90
   allocate_alloc_opt_8.f90
   allocate_class_4.f90
   allocate_derived_2.f90
   allocate_derived_3.f90
   allocate_with_mold_2.f90
+  allocate_with_mold_4.f90
   allocate_with_source_18.f03
   allocate_with_source_13.f03
   allocate_with_source_14.f03
   allocate_with_source_17.f03
   allocate_with_source_21.f03
   allocate_with_source_25.f90
   allocate_with_source_8.f08
   associate_18.f08
file(GLOB UNIMPLEMENTED_FILES CONFIGURE_DEPENDS
   coarray_lib_this_image_1.f90
   coarray_lib_this_image_2.f90
   coarray_poly_6.f90
   coarray_poly_7.f90
   coarray_poly_8.f90
   class_optional_1.f90
   class_optional_2.f90
   coarray_41.f90
+  submodule_26.f08
 
   # unimplemented: coarray reference
   coarray_lib_comm_1.f90
 
   # unimplemented: co_max
   coarray_collectives_3.f90
   coarray_collectives_4.f90
   coarray_collectives_5.f90
file(GLOB SKIPPED_FILES CONFIGURE_DEPENDS
   value_1.f90
   value_tests_f03.f90
   where_2.f90
   whole_file_13.f90
   whole_file_14.f90
   winapi.f90
   zero_array_components_1.f90
 
+  # These tests attempt to print the value of the private component of a C_PTR.
+  init_flag_17.f90
+  c_ptr_tests_16.f90
+
   # error: 'fir.convert' op invalid type conversion
   achar_4.f90
   char_cast_2.f90
   c_char_tests_4.f90
   c_char_tests_5.f90
   widechar_6.f90
   widechar_intrinsics_2.f90
   widechar_intrinsics_3.f90
file(GLOB FAILING_FILES CONFIGURE_DEPENDS
   alloc_comp_constraint_7.f90
   alloc_comp_std.f90
   allocatable_scalar_2.f90
   allocate_alloc_opt_11.f90
   allocate_alloc_opt_5.f90
   allocate_error_2.f90
   allocate_error_4.f90
   argument_checking_14.f90
-  argument_checking_19.f90
+  argument_checking_19.f90   # warning instead of error
   argument_checking_20.f90
   argument_checking_22.f90
   argument_checking_24.f90
   argument_checking_2.f90
-  argument_checking_4.f90
   arith_divide.f
   arith_divide_no_check.f
   arithmetic_overflow_1.f90
   array_constructor_28.f03
   array_constructor_38.f90
   array_constructor_type_13.f90
   array_constructor_type_18.f03
   associate_2.f95
file(GLOB FAILING_FILES CONFIGURE_DEPENDS
   masklr_3.f90
   minmax_char_2.f90
   module_private_1.f90
   module_procedure_double_colon_2.f90
   module_procedure_double_colon_3.f90
   modulo_check.f90
   move_alloc_17.f90
   mvbits_9.f90
-  namelist_2.f90
   namelist_34.f90
   namelist_35.f90
   namelist_3.f90
   namelist_5.f90
   namelist_63.f90
   namelist_98.f90
   namelist_assumed_char.f90
   nearest_5.f90
file(GLOB FAILING_FILES CONFIGURE_DEPENDS
   present_1.f90
   private_type_10.f90
   private_type_12.f90
   private_type_1.f90
   private_type_2.f90
   private_type_4.f90
   private_type_9.f90
   proc_decl_11.f90
-  proc_decl_26.f90
   proc_decl_4.f90
   protected_3.f90
   ptr-func-2.f90
   pure_formal_2.f90
   random_seed_1.f90
   random_seed_4.f90
   rank_2.f90
   rank_3.f90
file(GLOB FAILING_FILES CONFIGURE_DEPENDS
   erfc_scaled_2.f90
   fmt_read_3.f90
   forall_17.f90
   g77_intrinsics_sub.f
   goto_8.f90
   hollerith5.f90
   hollerith_legacy.f90
   imag_1.f
-  import7.f90
-  include_10.f
-  include_11.f
   include_12.f
   initialization_29.f90
   intent_out_11.f90
   interface_1.f90
   interface_8.f90
   intrinsic_8.f90
   intrinsic_signal.f90
   iso_fortran_env_7.f90
file(GLOB FAILING_FILES CONFIGURE_DEPENDS
   pr71085.f90
   pr71935.f90
   pr77420_4.f90
   pr78061.f
   pr79315.f90
   pr83113.f90
   pr84957.f90
   pr88228.f90
-  pr88932.f90
   pr91650_2.f90
   pr91945.f90
   pr95090.f90
-  pr95500.f90
   pr95689.f90
   print_fmt_3.f
-  proc_ptr_45.f90
   public_private_module_4.f90
   quad_1.f90
   recursive_interface_1.f90
   recursive_interface_2.f90
   restricted_expression_1.f90
   select_type_30.f03
   specifics_2.f90
   stop_2.f
   submodule_24.f08
-  submodule_26.f08
-  transfer_null_1.f90
   unused_artificial_dummies_1.f90
   wdate-time.F90
   whole_file_10.f90
   whole_file_29.f90
   whole_file_31.f90
-  whole_file_9.f90
-  widechar_10.f90
   zero_sized_12.f90
 
   # This test has a #illegal preprocessor directive. I think this is expected to
   # raise a warning in gfortran, but flang raises an error and fails to compile
   # instead. This may be a policy difference between flang and gfortran but
   # should be confirmed.
   badline.f