Add a `ClassIs` function that takes a descriptor and a
type desc to implement the check needed by the CLASS IS type guard
in SELECT TYPE construct.
Since the kind type parameter are directly folded in the type itself
in Flang and the type descriptor is a global, the function just check
if the type descriptor address of the descriptor is equivalent to
the type descriptor address of the global. If not, it check in the
parents of the descriptor's type descriptor.
Reviewed By: jeanPerier
Differential Revision: https://reviews.llvm.org/D138279
Move the closure of the subset of flang/runtime/*.h header files that
are referenced by source files outside flang/runtime (apart from unit tests)
into a new directory (flang/include/flang/Runtime) so that relative
include paths into ../runtime need not be used.
flang/runtime/pgmath.h.inc is moved to flang/include/flang/Evaluate;
it's not used by the runtime.
Differential Revision: https://reviews.llvm.org/D109107
Use derived type information tables to drive default component
initialization (when needed), component destruction, and calls to
final subroutines. Perform these operations automatically for
ALLOCATE()/DEALLOCATE() APIs for allocatables, automatics, and
pointers. Add APIs for use in lowering to perform these operations
for non-allocatable/automatic non-pointer variables.
Data pointer component initialization supports arbitrary constant
designators, a F'2008 feature, which may be a first for Fortran
implementations.
Differential Revision: https://reviews.llvm.org/D106297
