ChangeLog:
* config/s390/s390.c (GP_ARG_NUM_REG, FP_ARG_NUM_REG): New defines.
(s390_function_arg, s390_gimplify_va_arg): Use them.
(s390_register_info): Save only required subset of argument
registers into save area for va_list.
(s390_va_start): Initialize only required elements of va_list struct.
(s390_build_builtin_va_list): Set va_list_[gf]pr_counter_field.
testsuite/ChangeLog:
* gcc.dg/tree-ssa/stdarg-2.c: Add tests for s390*-*-linux* targets.
* gcc.dg/tree-ssa/stdarg-3.c: Likewise.
* gcc.dg/tree-ssa/stdarg-4.c: Likewise.
* gcc.dg/tree-ssa/stdarg-5.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@100164
138bc75d-0d04-0410-961f-
82ee72b054a4
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