fix: __builtin_bswap{16,32,64}() constantness
[smatch.git] / linearize.h
blobbac82d7ff020ac418016736b13f4bd79b51925ff
1 #ifndef LINEARIZE_H
2 #define LINEARIZE_H
4 #include "lib.h"
5 #include "allocate.h"
6 #include "token.h"
7 #include "parse.h"
8 #include "symbol.h"
10 struct instruction;
11 DECLARE_PTR_LIST(pseudo_ptr_list, pseudo_t);
13 struct pseudo_user {
14 struct instruction *insn;
15 pseudo_t *userp;
18 DECLARE_ALLOCATOR(pseudo_user);
19 DECLARE_PTR_LIST(pseudo_user_list, struct pseudo_user);
22 enum pseudo_type {
23 PSEUDO_VOID,
24 PSEUDO_REG,
25 PSEUDO_SYM,
26 PSEUDO_VAL,
27 PSEUDO_ARG,
28 PSEUDO_PHI,
31 struct pseudo {
32 int nr;
33 enum pseudo_type type;
34 struct pseudo_user_list *users;
35 struct ident *ident;
36 union {
37 struct symbol *sym;
38 struct instruction *def;
39 long long value;
41 void *priv;
44 extern struct pseudo void_pseudo;
46 #define VOID (&void_pseudo)
48 struct multijmp {
49 struct basic_block *target;
50 int begin, end;
53 struct asm_constraint {
54 pseudo_t pseudo;
55 const char *constraint;
56 const struct ident *ident;
59 DECLARE_ALLOCATOR(asm_constraint);
60 DECLARE_PTR_LIST(asm_constraint_list, struct asm_constraint);
62 struct asm_rules {
63 struct asm_constraint_list *inputs;
64 struct asm_constraint_list *outputs;
65 struct asm_constraint_list *clobbers;
68 DECLARE_ALLOCATOR(asm_rules);
70 struct instruction {
71 unsigned opcode:8,
72 size:24;
73 struct basic_block *bb;
74 struct position pos;
75 struct symbol *type;
76 union {
77 pseudo_t target;
78 pseudo_t cond; /* for branch and switch */
80 union {
81 struct /* entrypoint */ {
82 struct pseudo_list *arg_list;
84 struct /* branch */ {
85 struct basic_block *bb_true, *bb_false;
87 struct /* switch */ {
88 struct multijmp_list *multijmp_list;
90 struct /* phi_node */ {
91 struct pseudo_list *phi_list;
93 struct /* phi source */ {
94 pseudo_t phi_src;
95 struct instruction_list *phi_users;
97 struct /* unops */ {
98 pseudo_t src;
99 struct symbol *orig_type; /* casts */
100 unsigned int offset; /* memops */
102 struct /* binops and sel */ {
103 pseudo_t src1, src2, src3;
105 struct /* slice */ {
106 pseudo_t base;
107 unsigned from, len;
109 struct /* setval */ {
110 pseudo_t symbol; /* Subtle: same offset as "src" !! */
111 struct expression *val;
113 struct /* call */ {
114 pseudo_t func;
115 struct pseudo_list *arguments;
116 struct symbol *fntype;
118 struct /* context */ {
119 int increment;
120 int check;
121 struct expression *context_expr;
123 struct /* asm */ {
124 const char *string;
125 struct asm_rules *asm_rules;
130 enum opcode {
131 OP_BADOP,
133 /* Entry */
134 OP_ENTRY,
136 /* Terminator */
137 OP_TERMINATOR,
138 OP_RET = OP_TERMINATOR,
139 OP_BR,
140 OP_CBR,
141 OP_SWITCH,
142 OP_INVOKE,
143 OP_COMPUTEDGOTO,
144 OP_UNWIND,
145 OP_TERMINATOR_END = OP_UNWIND,
147 /* Binary */
148 OP_BINARY,
149 OP_ADD = OP_BINARY,
150 OP_SUB,
151 OP_MULU, OP_MULS,
152 OP_DIVU, OP_DIVS,
153 OP_MODU, OP_MODS,
154 OP_SHL,
155 OP_LSR, OP_ASR,
157 /* Logical */
158 OP_AND,
159 OP_OR,
160 OP_XOR,
161 OP_AND_BOOL,
162 OP_OR_BOOL,
163 OP_BINARY_END = OP_OR_BOOL,
165 /* Binary comparison */
166 OP_BINCMP,
167 OP_SET_EQ = OP_BINCMP,
168 OP_SET_NE,
169 OP_SET_LE,
170 OP_SET_GE,
171 OP_SET_LT,
172 OP_SET_GT,
173 OP_SET_B,
174 OP_SET_A,
175 OP_SET_BE,
176 OP_SET_AE,
177 OP_BINCMP_END = OP_SET_AE,
179 /* Uni */
180 OP_NOT,
181 OP_NEG,
183 /* Select - three input values */
184 OP_SEL,
186 /* Memory */
187 OP_MALLOC,
188 OP_FREE,
189 OP_ALLOCA,
190 OP_LOAD,
191 OP_STORE,
192 OP_SETVAL,
193 OP_SYMADDR,
194 OP_GET_ELEMENT_PTR,
196 /* Other */
197 OP_PHI,
198 OP_PHISOURCE,
199 OP_CAST,
200 OP_SCAST,
201 OP_FPCAST,
202 OP_PTRCAST,
203 OP_INLINED_CALL,
204 OP_CALL,
205 OP_VANEXT,
206 OP_VAARG,
207 OP_SLICE,
208 OP_SNOP,
209 OP_LNOP,
210 OP_NOP,
211 OP_DEATHNOTE,
212 OP_ASM,
214 /* Sparse tagging (line numbers, context, whatever) */
215 OP_CONTEXT,
216 OP_RANGE,
218 /* Needed to translate SSA back to normal form */
219 OP_COPY,
222 struct basic_block_list;
223 struct instruction_list;
225 struct basic_block {
226 struct position pos;
227 unsigned long generation;
228 int context;
229 struct entrypoint *ep;
230 struct basic_block_list *parents; /* sources */
231 struct basic_block_list *children; /* destinations */
232 struct instruction_list *insns; /* Linear list of instructions */
233 struct pseudo_list *needs, *defines;
234 union {
235 unsigned int nr; /* unique id for label's names */
236 void *priv;
241 static inline void add_bb(struct basic_block_list **list, struct basic_block *bb)
243 add_ptr_list(list, bb);
246 static inline void add_instruction(struct instruction_list **list, struct instruction *insn)
248 add_ptr_list(list, insn);
251 static inline void add_multijmp(struct multijmp_list **list, struct multijmp *multijmp)
253 add_ptr_list(list, multijmp);
256 static inline pseudo_t *add_pseudo(struct pseudo_list **list, pseudo_t pseudo)
258 return add_ptr_list(list, pseudo);
261 static inline int remove_pseudo(struct pseudo_list **list, pseudo_t pseudo)
263 return delete_ptr_list_entry((struct ptr_list **)list, pseudo, 0) != 0;
266 static inline int bb_terminated(struct basic_block *bb)
268 struct instruction *insn;
269 if (!bb)
270 return 0;
271 insn = last_instruction(bb->insns);
272 return insn && insn->opcode >= OP_TERMINATOR
273 && insn->opcode <= OP_TERMINATOR_END;
276 static inline int bb_reachable(struct basic_block *bb)
278 return bb != NULL;
281 static inline void add_pseudo_ptr(pseudo_t *ptr, struct pseudo_ptr_list **list)
283 add_ptr_list(list, ptr);
286 static inline void add_pseudo_user_ptr(struct pseudo_user *user, struct pseudo_user_list **list)
288 add_ptr_list(list, user);
291 static inline int has_use_list(pseudo_t p)
293 return (p && p->type != PSEUDO_VOID && p->type != PSEUDO_VAL);
296 static inline struct pseudo_user *alloc_pseudo_user(struct instruction *insn, pseudo_t *pp)
298 struct pseudo_user *user = __alloc_pseudo_user(0);
299 user->userp = pp;
300 user->insn = insn;
301 return user;
304 static inline void use_pseudo(struct instruction *insn, pseudo_t p, pseudo_t *pp)
306 *pp = p;
307 if (has_use_list(p))
308 add_pseudo_user_ptr(alloc_pseudo_user(insn, pp), &p->users);
311 static inline void remove_bb_from_list(struct basic_block_list **list, struct basic_block *entry, int count)
313 delete_ptr_list_entry((struct ptr_list **)list, entry, count);
316 static inline void replace_bb_in_list(struct basic_block_list **list,
317 struct basic_block *old, struct basic_block *new, int count)
319 replace_ptr_list_entry((struct ptr_list **)list, old, new, count);
322 struct entrypoint {
323 struct symbol *name;
324 struct symbol_list *syms;
325 struct pseudo_list *accesses;
326 struct basic_block_list *bbs;
327 struct basic_block *active;
328 struct instruction *entry;
331 extern void insert_select(struct basic_block *bb, struct instruction *br, struct instruction *phi, pseudo_t if_true, pseudo_t if_false);
332 extern void insert_branch(struct basic_block *bb, struct instruction *br, struct basic_block *target);
334 pseudo_t alloc_phi(struct basic_block *source, pseudo_t pseudo, int size);
335 pseudo_t alloc_pseudo(struct instruction *def);
336 pseudo_t value_pseudo(long long val);
338 struct entrypoint *linearize_symbol(struct symbol *sym);
339 int unssa(struct entrypoint *ep);
340 void show_entry(struct entrypoint *ep);
341 const char *show_pseudo(pseudo_t pseudo);
342 void show_bb(struct basic_block *bb);
343 const char *show_instruction(struct instruction *insn);
345 #endif /* LINEARIZE_H */