From db8ffb402adef529e224cdc4bd73e09a3aa247f2 Mon Sep 17 00:00:00 2001
From: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 9 Sep 2016 21:22:15 +0000
Subject: 	Implement P0035R4, C++17 new of over-aligned types.

gcc/cp/
	* cp-tree.h (enum cp_tree_index): Add CPTI_ALIGN_TYPE.
	(align_type_node): New macro.
	* call.c (build_operator_new_call): Handle C++17 aligned new.
	(second_parm_is_size_t, build_op_delete_call): Likewise.
	(non_placement_deallocation_fn_p): Likewise. Rename to
	usual_deallocation_fn_p.
	(aligned_allocation_fn_p, aligned_deallocation_fn_p): New.
	* decl.c (cxx_init_decl_processing): Add aligned new support.
	* init.c (type_has_new_extended_alignment): New.
	(build_new_1): Handle aligned new.
	* tree.c (vec_copy_and_insert): New.
gcc/c-family/
	* c.opt: Add -faligned-new and -Waligned-new.
	* c-common.c (max_align_t_align): Split out from...
	(cxx_fundamental_alignment_p): ...here.
	* c-common.h: Declare it.
	* c-cppbuiltin.c (c_cpp_builtins): Handle aligned new.
libstdc++-v3/
	* libsupc++/new: Declare aligned new/delete operators.
	* config/abi/pre/gnu.ver: Export them.
	* configure.ac: Check for aligned_alloc, posix_memalign, memalign,
	_aligned_malloc.
	* libsupc++/new_opa.cc: New.
	* libsupc++/new_opant.cc: New.
	* libsupc++/new_opva.cc: New.
	* libsupc++/new_opva.cc: New.
	* libsupc++/del_opa.cc: New.
	* libsupc++/del_opant.cc: New.
	* libsupc++/del_opsa.cc: New.
	* libsupc++/del_opva.cc: New.
	* libsupc++/del_opvant.cc: New.
	* libsupc++/del_opvsa.cc: New.
	* libsupc++/Makefile.am: Build them.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240056 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/cp/tree.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'gcc/cp/tree.c')

diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index 6d254ddbf14..bd2e8f66739 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -2920,6 +2920,30 @@ build_min_non_dep_op_overload (enum tree_code op,
   return call;
 }
 
+/* Return a new tree vec copied from VEC, with ELT inserted at index IDX.  */
+
+vec<tree, va_gc> *
+vec_copy_and_insert (vec<tree, va_gc> *old_vec, tree elt, unsigned idx)
+{
+  unsigned len = vec_safe_length (old_vec);
+  gcc_assert (idx <= len);
+
+  vec<tree, va_gc> *new_vec = NULL;
+  vec_alloc (new_vec, len + 1);
+
+  unsigned i;
+  for (i = 0; i < len; ++i)
+    {
+      if (i == idx)
+	new_vec->quick_push (elt);
+      new_vec->quick_push ((*old_vec)[i]);
+    }
+  if (i == idx)
+    new_vec->quick_push (elt);
+
+  return new_vec;
+}
+
 tree
 get_type_decl (tree t)
 {
-- 
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