-/* Try to integrate function. See expand_inline_function for documentation
- about the parameters. */
-
-static rtx
-try_to_integrate (tree fndecl, tree actparms, rtx target, int ignore,
- tree type, rtx structure_value_addr)
-{
- rtx temp;
- rtx before_call;
- int i;
- rtx old_stack_level = 0;
- int reg_parm_stack_space = 0;
-
-#ifdef REG_PARM_STACK_SPACE
-#ifdef MAYBE_REG_PARM_STACK_SPACE
- reg_parm_stack_space = MAYBE_REG_PARM_STACK_SPACE;
-#else
- reg_parm_stack_space = REG_PARM_STACK_SPACE (fndecl);
-#endif
-#endif
-
- before_call = get_last_insn ();
-
- timevar_push (TV_INTEGRATION);
-
- temp = expand_inline_function (fndecl, actparms, target,
- ignore, type,
- structure_value_addr);
-
- timevar_pop (TV_INTEGRATION);
-
- /* If inlining succeeded, return. */
- if (temp != (rtx) (size_t) - 1)
- {
- if (ACCUMULATE_OUTGOING_ARGS)
- {
- /* If the outgoing argument list must be preserved, push
- the stack before executing the inlined function if it
- makes any calls. */
-
- i = reg_parm_stack_space;
- if (i > highest_outgoing_arg_in_use)
- i = highest_outgoing_arg_in_use;
- while (--i >= 0 && stack_usage_map[i] == 0)
- ;
-
- if (stack_arg_under_construction || i >= 0)
- {
- rtx first_insn
- = before_call ? NEXT_INSN (before_call) : get_insns ();
- rtx insn = NULL_RTX, seq;
-
- /* Look for a call in the inline function code.
- If DECL_SAVED_INSNS (fndecl)->outgoing_args_size is
- nonzero then there is a call and it is not necessary
- to scan the insns. */
-
- if (DECL_SAVED_INSNS (fndecl)->outgoing_args_size == 0)
- for (insn = first_insn; insn; insn = NEXT_INSN (insn))
- if (GET_CODE (insn) == CALL_INSN)
- break;
-
- if (insn)
- {
- /* Reserve enough stack space so that the largest
- argument list of any function call in the inline
- function does not overlap the argument list being
- evaluated. This is usually an overestimate because
- allocate_dynamic_stack_space reserves space for an
- outgoing argument list in addition to the requested
- space, but there is no way to ask for stack space such
- that an argument list of a certain length can be
- safely constructed.
-
- Add the stack space reserved for register arguments, if
- any, in the inline function. What is really needed is the
- largest value of reg_parm_stack_space in the inline
- function, but that is not available. Using the current
- value of reg_parm_stack_space is wrong, but gives
- correct results on all supported machines. */
-
- int adjust = (DECL_SAVED_INSNS (fndecl)->outgoing_args_size
- + reg_parm_stack_space);
-
- start_sequence ();
- emit_stack_save (SAVE_BLOCK, &old_stack_level, NULL_RTX);
- allocate_dynamic_stack_space (GEN_INT (adjust),
- NULL_RTX, BITS_PER_UNIT);
- seq = get_insns ();
- end_sequence ();
- emit_insn_before (seq, first_insn);
- emit_stack_restore (SAVE_BLOCK, old_stack_level, NULL_RTX);
- }
- }
- }
-
- /* If the result is equivalent to TARGET, return TARGET to simplify
- checks in store_expr. They can be equivalent but not equal in the
- case of a function that returns BLKmode. */
- if (temp != target && rtx_equal_p (temp, target))
- return target;
- return temp;
- }
-
- /* If inlining failed, mark FNDECL as needing to be compiled
- separately after all. If function was declared inline,
- give a warning. */
- if (DECL_INLINE (fndecl) && warn_inline && !flag_no_inline
- && optimize > 0 && !TREE_ADDRESSABLE (fndecl))
- {
- warning ("%Jinlining failed in call to '%F'", fndecl, fndecl);
- warning ("called from here");
- }
- (*lang_hooks.mark_addressable) (fndecl);
- return (rtx) (size_t) - 1;
-}
-