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rs6000.c (rs6000_gimplify_va_arg): If STRICT_ALIGNMENT and the type is more aligned than the saved registers...

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* config/rs6000/rs6000.c (rs6000_gimplify_va_arg): If
	STRICT_ALIGNMENT and the type is more aligned than the saved
	registers, copy via a temporary.

From-SVN: r119307
This commit is contained in:
Joseph Myers 2006-11-29 12:49:06 +00:00 committed by Joseph Myers
parent e969dbde29
commit 0cfbc62b0b
2 changed files with 27 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2006-11-29 Joseph Myers <joseph@codesourcery.com>
* config/rs6000/rs6000.c (rs6000_gimplify_va_arg): If
STRICT_ALIGNMENT and the type is more aligned than the saved
registers, copy via a temporary.
2006-11-28 Andrew Pinski <pinskia@gmail.com>
PR tree-opt/29984

21
gcc/config/rs6000/rs6000.c
View File

@ -6222,6 +6222,27 @@ rs6000_gimplify_va_arg (tree valist, tree type, tree *pre_p, tree *post_p)
append_to_statement_list (t, pre_p);
}
if (STRICT_ALIGNMENT
&& (TYPE_ALIGN (type)
> (unsigned) BITS_PER_UNIT * (align < 4 ? 4 : align)))
{
/* The value (of type complex double, for example) may not be
aligned in memory in the saved registers, so copy via a
temporary. (This is the same code as used for SPARC.) */
tree tmp = create_tmp_var (type, "va_arg_tmp");
tree dest_addr = build_fold_addr_expr (tmp);
tree copy = build_function_call_expr
(implicit_built_in_decls[BUILT_IN_MEMCPY],
tree_cons (NULL_TREE, dest_addr,
tree_cons (NULL_TREE, addr,
tree_cons (NULL_TREE, size_int (rsize * 4),
NULL_TREE))));
gimplify_and_add (copy, pre_p);
addr = dest_addr;
}
addr = fold_convert (ptrtype, addr);
return build_va_arg_indirect_ref (addr);
}