openmp: Allocate memory for private/firstprivate clauses as directed by allocate clauses in target constructs [PR113436]HEADtrunkmaster

This patch generates calls to GOMP_alloc to allocate memory for firstprivate
and private clauses on target constructs with an allocator and alignment
as specified by the allocate clause.

The decl values of the clause need to be adjusted to refer to the allocated
memory, and the initial values of variables need to be copied into the
allocated space for firstprivate variables.

For variable-length arrays, the size of the array is stored in a separate
variable, so the allocation and initialization need to be delayed until the
size is made available on the target.

gcc/

	PR middle-end/113436
	* omp-low.cc (is_variable_sized): Add extra is_ref argument.  Check
	referenced type if true.
	(lower_omp_target): Call lower_private_allocate to generate code to
	allocate memory for firstprivate/private clauses with allocators, and
	insert code after dependent variables have been initialized.
	Construct calls to free allocate memory and insert after target block.
	Adjust decl values for clause variables.  Copy value of firstprivate
	variables to allocated memory.

gcc/testsuite/

	PR middle-end/113436
	* c-c++-common/gomp/pr113436-1.c: New.
	* c-c++-common/gomp/pr113436-2.c: New.
	* g++.dg/gomp/pr113436.C: New.
	* gfortran.dg/gomp/pr113436-1.f90: New.
	* gfortran.dg/gomp/pr113436-2.f90: New.
	* gfortran.dg/gomp/pr113436-3.f90: New.
	* gfortran.dg/gomp/pr113436-4.f90: New.

libgomp/

	PR middle-end/113436
	* libgomp.texi (OpenMP 5.0): Mark allocate clause as implemented.
	(Memory allocation): Add documentation for use in target construct.
	* testsuite/libgomp.c++/firstprivate-1.C: Enable alignment check.
	* testsuite/libgomp.c++/pr113436-1.C: New.
	* testsuite/libgomp.c++/pr113436-2.C: New.
	* testsuite/libgomp.c++/private-1.C: Enable alignment check.
	* testsuite/libgomp.c-c++-common/pr113436-1.c: New.
	* testsuite/libgomp.c-c++-common/pr113436-2.c: New.
	* testsuite/libgomp.fortran/pr113436-1.f90: New.
	* testsuite/libgomp.fortran/pr113436-2.f90: New.

0 files changed, 0 insertions, 0 deletions