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| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 21 |
2 files changed, 27 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c838be7..0c02f8b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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 diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index d52a759..675af68 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -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); } |