c++: Handle multiple aggregate overloads [PR95319].

[thirdparty/gcc.git] / gcc / calls.h

diff --git a/gcc/calls.h b/gcc/calls.h
index 709a0769b768a07fd2eb97a8fb75a38f1e779f75..4ee493607774df26d88136272aa25c6e55c717f8 100644 (file)
--- a/gcc/calls.h
+++ b/gcc/calls.h
@@ -1,5 +1,5 @@
 /* Declarations and data types for RTL call insn generation.
-   Copyright (C) 2013-2019 Free Software Foundation, Inc.
+   Copyright (C) 2013-2020 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -34,21 +34,25 @@ along with GCC; see the file COPYING3.  If not see
 class function_arg_info
 {
 public:
-  function_arg_info () : type (NULL_TREE), mode (VOIDmode), named (false) {}
+  function_arg_info ()
+    : type (NULL_TREE), mode (VOIDmode), named (false),
+      pass_by_reference (false)
+  {}
 
   /* Initialize an argument of mode MODE, either before or after promotion.  */
   function_arg_info (machine_mode mode, bool named)
-    : type (NULL_TREE), mode (mode), named (named)
+    : type (NULL_TREE), mode (mode), named (named), pass_by_reference (false)
   {}
 
   /* Initialize an unpromoted argument of type TYPE.  */
   function_arg_info (tree type, bool named)
-    : type (type), mode (TYPE_MODE (type)), named (named)
+    : type (type), mode (TYPE_MODE (type)), named (named),
+      pass_by_reference (false)
   {}
 
   /* Initialize an argument with explicit properties.  */
   function_arg_info (tree type, machine_mode mode, bool named)
-    : type (type), mode (mode), named (named)
+    : type (type), mode (mode), named (named), pass_by_reference (false)
   {}
 
   /* Return true if the gimple-level type is an aggregate.  */
@@ -100,6 +104,10 @@ public:
      treated as an unnamed variadic argument (i.e. one passed through
      "...").  See also TARGET_STRICT_ARGUMENT_NAMING.  */
   unsigned int named : 1;
+
+  /* True if we have decided to pass the argument by reference, in which case
+     the function_arg_info describes a pointer to the original argument.  */
+  unsigned int pass_by_reference : 1;
 };
 
 extern int flags_from_decl_or_type (const_tree);
@@ -108,8 +116,8 @@ extern int setjmp_call_p (const_tree);
 extern bool gimple_maybe_alloca_call_p (const gimple *);
 extern bool gimple_alloca_call_p (const gimple *);
 extern bool alloca_call_p (const_tree);
-extern bool must_pass_in_stack_var_size (machine_mode, const_tree);
-extern bool must_pass_in_stack_var_size_or_pad (machine_mode, const_tree);
+extern bool must_pass_in_stack_var_size (const function_arg_info &);
+extern bool must_pass_in_stack_var_size_or_pad (const function_arg_info &);
 extern bool must_pass_va_arg_in_stack (tree);
 extern rtx prepare_call_address (tree, rtx, rtx, rtx *, int, int);
 extern bool shift_return_value (machine_mode, bool, rtx);
@@ -118,6 +126,8 @@ extern void fixup_tail_calls (void);
 
 extern bool pass_by_reference (CUMULATIVE_ARGS *, function_arg_info);
 extern bool pass_va_arg_by_reference (tree);
+extern bool apply_pass_by_reference_rules (CUMULATIVE_ARGS *,
+                                          function_arg_info &);
 extern bool reference_callee_copied (CUMULATIVE_ARGS *,
                                     const function_arg_info &);
 extern void maybe_warn_alloc_args_overflow (tree, tree, tree[2], int[2]);
@@ -125,5 +135,6 @@ extern tree get_attr_nonstring_decl (tree, tree * = NULL);
 extern void maybe_warn_nonstring_arg (tree, tree);
 extern bool get_size_range (tree, tree[2], bool = false);
 extern rtx rtx_for_static_chain (const_tree, bool);
+extern bool cxx17_empty_base_field_p (const_tree);
 
 #endif // GCC_CALLS_H