/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
/**
* @file
* @brief This file contains functions for matching firm graphs for
- * nodes that can be used as addressmode for x86 commands
+ * nodes that can be used as address mode for x86 instructions
* @author Matthias Braun
- * @version $Id: ia32_transform.c 15462 2007-08-03 16:50:59Z matze $
+ * @version $Id$
*/
#ifndef IA32_ADDRESS_MODE_H
#define IA32_ADDRESS_MODE_H
#include "irtypes.h"
+#include "../beirg.h"
+/**
+ * The address mode data: Used to construct (memory) address modes.
+ */
typedef struct ia32_address_t ia32_address_t;
struct ia32_address_t {
- ir_node *base;
- ir_node *index;
- ir_node *mem;
- int offset;
- int scale;
- ir_entity *symconst_ent;
- int use_frame;
- ir_entity *frame_entity;
- int symconst_sign;
+ ir_node *base; /**< The base register (if any) */
+ ir_node *index; /**< The index register (if any). */
+ ir_node *mem; /**< The memory value (if any). */
+ int offset; /**< An integer offset. */
+ int scale; /**< An integer scale. {0,1,2,3} */
+ ir_entity *symconst_ent; /**< A SynConst entity if any. */
+ int use_frame; /**< Set, if the frame is accessed */
+ ir_entity *frame_entity; /**< The accessed frame entity if any. */
+ int symconst_sign; /**< The "sign" of the symconst. */
};
-void ia32_create_address_mode(ia32_address_t *addr, ir_node *node, int force);
+typedef enum ia32_create_am_flags_t {
+ ia32_create_am_force = 1U << 0, /**< Ignore the marking of node as a
+ non-address-mode node */
+ ia32_create_am_double_use = 1U << 1 /**< Fold AM, even if the root of
+ address calculation has two users.
+ This is useful for dest AM */
+} ia32_create_am_flags_t;
+
+/**
+ * Create an address mode for a given node.
+ */
+void ia32_create_address_mode(ia32_address_t *addr, ir_node *node, ia32_create_am_flags_t);
+
+/**
+ * Mark those nodes of the given graph that cannot be used inside an
+ * address mode because there values must be materialized in registers.
+ */
+void ia32_calculate_non_address_mode_nodes(be_irg_t *birg);
+
+/**
+ * Free the non_address_mode information.
+ */
+void ia32_free_non_address_mode_nodes(void);
+
+/**
+ * Tells whether the given node is a non address mode node.
+ */
+int ia32_is_non_address_mode_node(ir_node const *node);
+
+/**
+ * mark a node so it will not be used as part of address modes
+ */
+void ia32_mark_non_am(ir_node *node);
#endif