/* Convert tree expression to rtl instructions, for GNU compiler.
Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
+ 2012 Free Software Foundation, Inc.
This file is part of GCC.
(1) One or more auto-inc style memory references (aka pushes),
(2) One or more addition/subtraction with the SP as destination,
(3) A single move insn with the SP as destination,
- (4) A call_pop insn.
+ (4) A call_pop insn,
+ (5) Noreturn call insns if !ACCUMULATE_OUTGOING_ARGS.
- Insns in the sequence that do not modify the SP are ignored.
+ Insns in the sequence that do not modify the SP are ignored,
+ except for noreturn calls.
The return value is the amount of adjustment that can be trivially
verified, via immediate operand or auto-inc. If the adjustment
this_delta = find_args_size_adjust (insn);
if (this_delta == 0)
- continue;
+ {
+ if (!CALL_P (insn)
+ || ACCUMULATE_OUTGOING_ARGS
+ || find_reg_note (insn, REG_NORETURN, NULL_RTX) == NULL_RTX)
+ continue;
+ }
gcc_assert (!saw_unknown);
if (this_delta == HOST_WIDE_INT_MIN)