2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Type definitions for ia32 node attributes.
23 * @author Christian Wuerdig
26 #ifndef FIRM_BE_IA32_IA32_NODES_ATTR_H
27 #define FIRM_BE_IA32_IA32_NODES_ATTR_H
29 #include "firm_config.h"
31 #include "firm_types.h"
32 #include "../bearch_t.h"
33 #include "../bemachine.h"
37 ia32_pn_Cmp_unsigned = 0x1000,
38 ia32_pn_Cmp_float = 0x2000,
48 ia32_am_None = 0, /**< no addrmode support */
49 ia32_am_Source = 2 /**< addrmode for source only */
53 ia32_am_arity_none = 0,
59 match_commutative = 1 << 0, /**< inputs are commutative */
60 match_am_and_immediates = 1 << 1, /**< node supports AM and immediate at
62 match_am = 1 << 2, /**< node supports (32bit) source AM */
63 match_8bit_am = 1 << 3, /**< node supports 8bit source AM */
64 match_16bit_am = 1 << 4, /**< node supports 16bit source AM */
65 match_immediate = 1 << 5, /**< node supports immediates */
66 match_8bit = 1 << 6, /**< supports 8 bit modes natively */
67 match_16bit = 1 << 7, /**< supports 16bit modes natively */
68 match_mode_neutral = 1 << 8, /**< 16 and 8 bit modes can be emulated
69 by 32 bit operations */
70 match_dest_am = 1 << 9,
71 match_try_am = 1 << 10, /**< only try to produce AM node, don't
72 do anything if AM isn't possible */
73 match_two_users = 1 << 11 /**< the instruction uses a load two times ... */
76 typedef struct ia32_op_attr_t ia32_op_attr_t;
77 struct ia32_op_attr_t {
84 IA32_ATTR_INVALID = 0,
85 IA32_ATTR_ia32_attr_t = 1 << 0,
86 IA32_ATTR_ia32_x87_attr_t = 1 << 1,
87 IA32_ATTR_ia32_asm_attr_t = 1 << 2,
88 IA32_ATTR_ia32_immediate_attr_t = 1 << 3,
89 IA32_ATTR_ia32_condcode_attr_t = 1 << 4,
90 IA32_ATTR_ia32_copyb_attr_t = 1 << 5
95 * The generic ia32 attributes. Every node has them.
97 typedef struct ia32_attr_t ia32_attr_t;
99 except_attr exc; /**< the exception attribute. MUST be the first one. */
100 struct ia32_attr_data_bitfield {
101 unsigned flags:5; /**< Indicating if spillable, rematerializeable, stack modifying and/or ignore. */
102 unsigned tp:3; /**< ia32 node type. */
103 unsigned am_support:2; /**< Indicates the address mode type supported by this node. */
104 unsigned am_arity : 2;
105 unsigned am_scale:2; /**< The address mode scale for index register. */
106 unsigned am_sc_sign:1; /**< The sign bit of the address mode symconst. */
108 unsigned use_frame:1; /**< Indicates whether the operation uses the frame pointer or not. */
109 unsigned has_except_label:1; /**< Set if this node needs a label because of possible exception. */
111 unsigned is_commutative:1; /**< Indicates whether op is commutative or not. */
113 unsigned need_stackent:1; /**< Set to 1 if node need space on stack. */
114 unsigned need_64bit_stackent:1; /**< needs a 64bit stack entity (see double->unsigned int conv) */
115 unsigned need_32bit_stackent:1; /**< needs a 32bit stack entity */
116 unsigned ins_permuted : 1; /**< inputs of node have been permuted
117 (for commutative nodes) */
118 unsigned cmp_unsigned : 1; /**< compare should be unsigned */
119 unsigned is_reload : 1; /**< node performs a reload */
120 unsigned is_spill : 1;
121 unsigned is_remat : 1;
124 int *out_flags; /**< flags for each produced value */
126 int am_offs; /**< offsets for AddrMode */
127 ir_entity *am_sc; /**< SymConst for AddrMode */
129 ir_mode *ls_mode; /**< Load/Store mode: This is the mode of the
130 value that is manipulated by this node. */
132 ir_entity *frame_ent; /**< the frame entity attached to this node */
134 const be_execution_unit_t ***exec_units; /**< list of units this operation can be executed on */
136 const arch_register_req_t **in_req; /**< register requirements for arguments */
137 const arch_register_req_t **out_req; /**< register requirements for results */
139 const arch_register_t **slots; /**< register slots for assigned registers */
141 ir_label_t exc_label; /**< the exception label iff this instruction can throw an exception */
144 const char *orig_node; /**< holds the name of the original ir node */
145 unsigned attr_type; /**< bitfield indicating the attribute type */
148 COMPILETIME_ASSERT(sizeof(struct ia32_attr_data_bitfield) <= 4, attr_bitfield);
151 * The attributes for nodes with condition code.
153 typedef struct ia32_condcode_attr_t ia32_condcode_attr_t;
154 struct ia32_condcode_attr_t {
155 ia32_attr_t attr; /**< generic attribute */
156 long pn_code; /**< projnum "types" (e.g. indicate compare operators */
160 * The attributes for CopyB code.
162 typedef struct ia32_copyb_attr_t ia32_copyb_attr_t;
163 struct ia32_copyb_attr_t {
164 ia32_attr_t attr; /**< generic attribute */
165 unsigned size; /**< size of copied block */
169 * The attributes for immediates.
171 typedef struct ia32_immediate_attr_t ia32_immediate_attr_t;
172 struct ia32_immediate_attr_t {
173 ia32_attr_t attr; /**< generic attribute */
174 ir_entity *symconst; /**< An entity if any. */
175 long offset; /**< An offset if any. */
176 unsigned sc_sign:1; /**< The sign bit of the symconst. */
180 * The attributes for x87 nodes.
182 typedef struct ia32_x87_attr_t ia32_x87_attr_t;
183 struct ia32_x87_attr_t {
184 ia32_attr_t attr; /**< the generic attribute */
185 const arch_register_t *x87[3]; /**< register slots for x87 register */
188 typedef struct ia32_asm_reg_t ia32_asm_reg_t;
189 struct ia32_asm_reg_t {
190 unsigned use_input : 1; /* use input or output pos */
193 unsigned dummy_fill : 13;
194 unsigned inout_pos : 16; /* in/out pos where the
195 register is assigned */
200 * The attributes for ASM nodes.
202 typedef struct ia32_asm_attr_t ia32_asm_attr_t;
203 struct ia32_asm_attr_t {
204 ia32_x87_attr_t x87_attr;
206 const ia32_asm_reg_t *register_map;
209 /* the following union is necessary to indicate to the compiler that we might want to cast
210 * the structs (we use them to simulate OO-inheritance) */
211 union allow_casts_attr_t_ {
213 ia32_condcode_attr_t cc_attr;
214 ia32_copyb_attr_t cpy_attr;
215 ia32_x87_attr_t x87_attr;
216 ia32_asm_attr_t asm_attr;
217 ia32_immediate_attr_t immediate_attr;
221 #define CAST_IA32_ATTR(type,ptr) (assert( ((const ia32_attr_t*)(ptr))->attr_type & IA32_ATTR_ ## type ), (type*) (ptr))
222 #define CONST_CAST_IA32_ATTR(type,ptr) (assert( ((const ia32_attr_t*)(ptr))->attr_type & IA32_ATTR_ ## type ), (const type*) (ptr))
224 #define CAST_IA32_ATTR(type,ptr) ((type*) (ptr))
225 #define CONST_CAST_IA32_ATTR(type,ptr) ((const type*) (ptr))