[Fortran] Remove references to -flang-experimental-exec

Remove all references to -flang-experimental-exec, both in the README's and the
build files since it has been removed from flang.

Differential Revision: https://reviews.llvm.org/D153551

Author: tarunprabhu

Fortran/UnitTests/finalization/README.md

@@ -59,7 +59,6 @@ a command similar to the following can be used from within test-suite-build:
 ``` shell
 cmake -DCMAKE_BUILD_TYPE=Release \
   -DCMAKE_Fortran_COMPILER:FILEPATH=/home/users/<you>/llvm-project/build/bin/flang-new \
-  -DCMAKE_Fortran_FLAGS=-flang-experimental-exec \
   -DTEST_SUITE_FORTRAN:BOOL=On \
   -DTEST_SUITE_SUBDIRS=Fortran/UnitTests/finalization \
   ../test-suite

Fortran/gfortran/CMakeLists.txt

@@ -6,15 +6,6 @@ include(CheckFortranCompilerFlag)
 # support for the flag is added, this should be removed.
 remove_definitions(-w)
 
-# If the test suite was configured by adding -flang-experimental-exec, remove
-# that flag from the default compilation flags. It is only needed at link-time
-# anyway, and for that it is explicitly added to those targets that need it.
-#
-# NOTE: This should be removed once the -flang-experimental-exec flag is no
-# longer needed.
-string(REPLACE "-flang-experimental-exec" "" TMP_FFLAGS "${CMAKE_Fortran_FLAGS}")
-set(CMAKE_Fortran_FLAGS "${TMP_FFLAGS}")
-
 # This option is added because as of 2023/03/20, several tests in this
 # directory have been disabled. Some of them exercise unsupported non-standard
 # extensions, others trigger a "not yet implemented" assertion while some cause
@@ -310,9 +301,6 @@ function(gfortran_execute_test File)
     endif()
   endforeach()
 
-  # NOTE: This should be removed when the -flang-experimental-exec flag is no
-  # longer needed.
-  target_link_options(${test_target} PRIVATE -flang-experimental-exec)
   set_target_properties(${test_target} PROPERTIES LINKER_LANGUAGE Fortran)
 endfunction()
 

Fortran/gfortran/README.md

@@ -59,10 +59,6 @@ fail to build for the reasons described above. The *failing* tests do build.
 
 ### Usage ###
 
-As of 18-Apr-2023, the `-flang-experimental-exec` flag may need to be used when
-configuring and compiling these tests. This can be passed to `cmake` via
-`CMAKE_Fortran_FLAGS`.
-
 By default, the *unsupported*, *unimplemented*, *skipped*, and *failing* tests
 are not run. The intention is that all tests in the test suite should pass by
 default.
@@ -91,7 +87,6 @@ cmake -DCMAKE_BUILD_TYPE=Release \
       -DCMAKE_C_COMPILER=/path/to/clang \
       -DCMAKE_CXX_COMPILER=/path/to/clang++ \
       -DCMAKE_Fortran_COMPILER=/path/to/flang-new \
-      -DCMAKE_Fortran_FLAGS=-flang-experimental-exec \
       -DTEST_SUITE_FORTRAN=On \
       -DTEST_SUITE_SUBDIRS=Fortran \
       -DTEST_SUITE_FORTRAN_ISO_C_HEADER_DIR=/path/to/dir/containing/header \

Fortran/gfortran/torture/compile/CMakeLists.txt

@@ -90,8 +90,6 @@ function(add_tests UnsupportedTests UnimplementedTests SkippedTests FailingTests
 
   file(WRITE ${DummySrc} "program test\nend program test")
   add_executable(${Dummy} ${DummySrc})
-  # At some point, the -flang-experimental-exec flag will be removed.
-  target_link_options(${Dummy} PUBLIC "-flang-experimental-exec")
 
   # All the "compile" tests in the gfortran torture tests are expected to
   # pass. Since diagnostics are only saved on failure, the diagnostics