[flang] Update recently added OpenMP tests to use the new driver

Switching from `%f18` to `%flang_fc1` in LIT tests added in
https://reviews.llvm.org/D91159. This way these tests are run with the
new driver, `flang-new`, when enabled (i.e. when
`FLANG_BUILD_NEW_DRIVER` is set).

Differential Revision: https://reviews.llvm.org/D101078

flang/test/Semantics/omp-allocate01.f90

@@ -1,4 +1,4 @@
-! RUN: %S/test_errors.sh %s %t %f18 -fopenmp
+! RUN: %S/test_errors.sh %s %t %flang_fc1 -fopenmp
 ! OpenMP Version 5.0
 ! 2.11.3 allocate Directive
 ! The allocate directive must appear in the same scope as the declarations of

flang/test/Semantics/omp-allocate02.f90

@@ -1,4 +1,4 @@
-! RUN: %S/test_errors.sh %s %t %f18 -fopenmp
+! RUN: %S/test_errors.sh %s %t %flang_fc1 -fopenmp
 ! OpenMP Version 5.0
 ! 2.11.3 allocate Directive
 ! At most one allocator clause can appear on the allocate directive.

flang/test/Semantics/omp-allocate03.f90

@@ -1,4 +1,4 @@
-! RUN: %S/test_errors.sh %s %t %f18 -fopenmp
+! RUN: %S/test_errors.sh %s %t %flang_fc1 -fopenmp
 ! OpenMP Version 5.0
 ! 2.11.3 allocate Directive
 ! A variable that is part of another variable (as an array or

flang/test/Semantics/omp-allocate04.f90

@@ -1,4 +1,4 @@
-! RUN: %S/test_errors.sh %s %t %f18 -fopenmp
+! RUN: %S/test_errors.sh %s %t %flang_fc1 -fopenmp
 ! OpenMP Version 5.0
 ! 2.11.3 allocate Directive
 ! Only the allocator clause is allowed on the allocate directive

flang/test/Semantics/omp-allocate05.f90

@@ -1,4 +1,4 @@
-! RUN: %S/test_errors.sh %s %t %f18 -fopenmp
+! RUN: %S/test_errors.sh %s %t %flang_fc1 -fopenmp
 ! OpenMP Version 5.0
 ! 2.11.3 allocate Directive
 ! allocate directives that appear in a target region must specify an allocator