PR rtl-optimization/52773
* calls.c (emit_library_call_value): When pushing arguments use
stack_pointer_rtx rather than virtual_outgoing_args_rtx in
CALL_INSN_FUNCTION_USAGE. Only emit one of use of the magic
stack pointer reference into CALL_INSN_FUNCTION_USAGE.
PR rtl-optimization/52773
* gcc.c-torture/compile/pr52773.c: New test.
From-SVN: r219796
