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| author | Joseph Myers <joseph@codesourcery.com> | 2006-11-29 12:49:06 +0000 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2006-11-29 12:49:06 +0000 |
| commit | 0cfbc62b0b8697c3e248295cd076e91cd890926c (patch) | |
| tree | e3922f13fa1650a768e0fee5da12de4852a58708 /gcc/config | |
| parent | e969dbde29bfd396259357aa54a54f38f09ff593 (diff) | |
| download | gcc-0cfbc62b0b8697c3e248295cd076e91cd890926c.zip gcc-0cfbc62b0b8697c3e248295cd076e91cd890926c.tar.gz gcc-0cfbc62b0b8697c3e248295cd076e91cd890926c.tar.bz2 | |
rs6000.c (rs6000_gimplify_va_arg): If STRICT_ALIGNMENT and the type is more aligned than the saved registers...
* 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
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 21 |
1 files changed, 21 insertions, 0 deletions
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); } |