procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

call.c (build_over_call): Instead of memcpy use an assignment of two MEM_REFs.

Browse source 
2011-08-12  Richard Guenther  <rguenther@suse.de>

	* call.c (build_over_call): Instead of memcpy use an
	assignment of two MEM_REFs.

From-SVN: r177691
This commit is contained in:
Richard Guenther 2011-08-12 08:55:05 +00:00 • committed by Richard Biener
parent f895fc2a0d
commit 6aeb8c9919
2 changed files with 17 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
gcc/cp/ChangeLog
View file

@ -1,3 +1,8 @@
2011-08-12 Richard Guenther <rguenther@suse.de>
* call.c (build_over_call): Instead of memcpy use an
assignment of two MEM_REFs.
2011-08-11 Romain Geissler <romain.geissler@gmail.com>
Brian Hackett <bhackett1024@gmail.com>

21
gcc/cp/call.c
View file

@ -6766,19 +6766,22 @@ build_over_call (struct z_candidate *cand, int flags, tsubst_flags_t complain)
}
else
{
/* We must only copy the non-tail padding parts.
Use __builtin_memcpy for the bitwise copy. */
tree arg0, arg1, arg2, t;
/* We must only copy the non-tail padding parts. */
tree arg0, arg2, t;
tree array_type, alias_set;
arg2 = TYPE_SIZE_UNIT (as_base);
arg1 = arg;
arg0 = cp_build_addr_expr (to, complain);
t = implicit_built_in_decls[BUILT_IN_MEMCPY];
t = build_call_n (t, 3, arg0, arg1, arg2);
t = convert (TREE_TYPE (arg0), t);
val = cp_build_indirect_ref (t, RO_NULL, complain);
array_type = build_array_type (char_type_node,
build_index_type
(size_binop (MINUS_EXPR,
arg2, size_int (1))));
alias_set = build_int_cst (build_pointer_type (type), 0);
t = build2 (MODIFY_EXPR, void_type_node,
build2 (MEM_REF, array_type, arg0, alias_set),
build2 (MEM_REF, array_type, arg, alias_set));
val = build2 (COMPOUND_EXPR, TREE_TYPE (to), t, to);
TREE_NO_WARNING (val) = 1;
}