* dwarf2read.c (read_subroutine_type): Set special calling
convention flag for functions compiled by IBM XL C for OpenCL.
* ppc-sysv-tdep.c: Include "dwarf2.h"
(ppc_sysv_abi_push_dummy_call): Implement IBM OpenCL vector types
calling convention.
(do_ppc_sysv_return_value): Add FUNC_TYPE argument. Implement
IBM OpenCL vector types calling convention.
(ppc_sysv_abi_return_value): Pass through FUNC_TYPE.
(ppc_sysv_abi_broken_return_value): Likewise.
(ppc64_sysv_abi_push_dummy_call): Implement IBM OpenCL vector
types calling convention.
(ppc64_sysv_abi_return_value): Likewise.
* spu-tdep.c: Include "dwarf2.h"
(spu_return_value): Implement IBM OpenCL vector types calling
convention.
gdb/testsuite/ChangeLog:
* gdb.opencl/callfuncs.cl: New file.
* gdb.opencl/callfuncs.exp: New test.
* gdb.opencl/Makefile.in (EXECUTABLES): Add callfuncs.