SYSTEM_CLOCK may take up to 3 optional parameters, all of which are
INTENT(OUT). The COUNT and COUNT_MAX parameters are integer scalars,
while COUNT_RATE may be a real or integer scalar.
This patch breaks up the interface into 3 different functions, one for
each parameter. All 3 return integers. It is up to lowering to convert
the results to the preferred type.
Differential Revision: https://reviews.llvm.org/D104851
CPU_TIME takes a single real scalar INTENT(OUT) argument. We can
therefore return a double and let lowering handle casting that to the
precision used for the default real kind.
Differential Revision: https://reviews.llvm.org/D103805
Diana Picus