static int rs6000_ra_ever_killed (void);
static tree rs6000_handle_longcall_attribute (tree *, tree, tree, int, bool *);
static tree rs6000_handle_altivec_attribute (tree *, tree, tree, int, bool *);
+static bool rs6000_ms_bitfield_layout_p (tree);
+static tree rs6000_handle_struct_attribute (tree *, tree, tree, int, bool *);
static void rs6000_eliminate_indexed_memrefs (rtx operands[2]);
static const char *rs6000_mangle_fundamental_type (tree);
extern const struct attribute_spec rs6000_attribute_table[];
#define TARGET_BINDS_LOCAL_P darwin_binds_local_p
#endif
+#undef TARGET_MS_BITFIELD_LAYOUT_P
+#define TARGET_MS_BITFIELD_LAYOUT_P rs6000_ms_bitfield_layout_p
+
#undef TARGET_ASM_OUTPUT_MI_THUNK
#define TARGET_ASM_OUTPUT_MI_THUNK rs6000_output_mi_thunk
}
-/* Return true if OP can be synthesized with a particular vspltisb, vspltish
+/* Return true if OP can be synthesized with a particular vspltisb, vspltish
or vspltisw instruction. OP is a CONST_VECTOR. Which instruction is used
depends on STEP and COPIES, one of which will be 1. If COPIES > 1,
all items are set to the same value and contain COPIES replicas of the
}
-/* Return true if OP is of the given MODE and can be synthesized
+/* Return true if OP is of the given MODE and can be synthesized
with a vspltisb, vspltish or vspltisw. */
bool
{ "altivec", 1, 1, false, true, false, rs6000_handle_altivec_attribute },
{ "longcall", 0, 0, false, true, true, rs6000_handle_longcall_attribute },
{ "shortcall", 0, 0, false, true, true, rs6000_handle_longcall_attribute },
+ { "ms_struct", 0, 0, false, false, false, rs6000_handle_struct_attribute },
+ { "gcc_struct", 0, 0, false, false, false, rs6000_handle_struct_attribute },
#ifdef SUBTARGET_ATTRIBUTE_TABLE
SUBTARGET_ATTRIBUTE_TABLE,
#endif
return force_reg (Pmode, call_ref);
}
\f
+#ifndef TARGET_USE_MS_BITFIELD_LAYOUT
+#define TARGET_USE_MS_BITFIELD_LAYOUT 0
+#endif
+
+/* Handle a "ms_struct" or "gcc_struct" attribute; arguments as in
+ struct attribute_spec.handler. */
+static tree
+rs6000_handle_struct_attribute (tree *node, tree name,
+ tree args ATTRIBUTE_UNUSED,
+ int flags ATTRIBUTE_UNUSED, bool *no_add_attrs)
+{
+ tree *type = NULL;
+ if (DECL_P (*node))
+ {
+ if (TREE_CODE (*node) == TYPE_DECL)
+ type = &TREE_TYPE (*node);
+ }
+ else
+ type = node;
+
+ if (!(type && (TREE_CODE (*type) == RECORD_TYPE
+ || TREE_CODE (*type) == UNION_TYPE)))
+ {
+ warning (OPT_Wattributes, "%qs attribute ignored", IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ }
+
+ else if ((is_attribute_p ("ms_struct", name)
+ && lookup_attribute ("gcc_struct", TYPE_ATTRIBUTES (*type)))
+ || ((is_attribute_p ("gcc_struct", name)
+ && lookup_attribute ("ms_struct", TYPE_ATTRIBUTES (*type)))))
+ {
+ warning (OPT_Wattributes, "%qs incompatible attribute ignored",
+ IDENTIFIER_POINTER (name));
+ *no_add_attrs = true;
+ }
+
+ return NULL_TREE;
+}
+
+static bool
+rs6000_ms_bitfield_layout_p (tree record_type)
+{
+ return (TARGET_USE_MS_BITFIELD_LAYOUT &&
+ !lookup_attribute ("gcc_struct", TYPE_ATTRIBUTES (record_type)))
+ || lookup_attribute ("ms_struct", TYPE_ATTRIBUTES (record_type));
+}
+\f
#ifdef USING_ELFOS_H
/* A get_unnamed_section callback, used for switching to toc_section. */