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beta-0.89.2
[luatex.git] / source / libs / luajit / LuaJIT-src / src / lj_ir.h
blob56e19774c9773077d03bfd6b1a37956030101583
1 /*
2 ** SSA IR (Intermediate Representation) format.
3 ** Copyright (C) 2005-2015 Mike Pall. See Copyright Notice in luajit.h
4 */
5
6 #ifndef _LJ_IR_H
7 #define _LJ_IR_H
8
9 #include "lj_obj.h"
10
11 /* -- IR instructions ----------------------------------------------------- */
12
13 /* IR instruction definition. Order matters, see below. ORDER IR */
14 #define IRDEF(_) \
15 /* Guarded assertions. */ \
16 /* Must be properly aligned to flip opposites (^1) and (un)ordered (^4). */ \
17 _(LT, N , ref, ref) \
18 _(GE, N , ref, ref) \
19 _(LE, N , ref, ref) \
20 _(GT, N , ref, ref) \
21 \
22 _(ULT, N , ref, ref) \
23 _(UGE, N , ref, ref) \
24 _(ULE, N , ref, ref) \
25 _(UGT, N , ref, ref) \
26 \
27 _(EQ, C , ref, ref) \
28 _(NE, C , ref, ref) \
29 \
30 _(ABC, N , ref, ref) \
31 _(RETF, S , ref, ref) \
32 \
33 /* Miscellaneous ops. */ \
34 _(NOP, N , ___, ___) \
35 _(BASE, N , lit, lit) \
36 _(PVAL, N , lit, ___) \
37 _(GCSTEP, S , ___, ___) \
38 _(HIOP, S , ref, ref) \
39 _(LOOP, S , ___, ___) \
40 _(USE, S , ref, ___) \
41 _(PHI, S , ref, ref) \
42 _(RENAME, S , ref, lit) \
43 _(PROF, S , ___, ___) \
44 \
45 /* Constants. */ \
46 _(KPRI, N , ___, ___) \
47 _(KINT, N , cst, ___) \
48 _(KGC, N , cst, ___) \
49 _(KPTR, N , cst, ___) \
50 _(KKPTR, N , cst, ___) \
51 _(KNULL, N , cst, ___) \
52 _(KNUM, N , cst, ___) \
53 _(KINT64, N , cst, ___) \
54 _(KSLOT, N , ref, lit) \
55 \
56 /* Bit ops. */ \
57 _(BNOT, N , ref, ___) \
58 _(BSWAP, N , ref, ___) \
59 _(BAND, C , ref, ref) \
60 _(BOR, C , ref, ref) \
61 _(BXOR, C , ref, ref) \
62 _(BSHL, N , ref, ref) \
63 _(BSHR, N , ref, ref) \
64 _(BSAR, N , ref, ref) \
65 _(BROL, N , ref, ref) \
66 _(BROR, N , ref, ref) \
67 \
68 /* Arithmetic ops. ORDER ARITH */ \
69 _(ADD, C , ref, ref) \
70 _(SUB, N , ref, ref) \
71 _(MUL, C , ref, ref) \
72 _(DIV, N , ref, ref) \
73 _(MOD, N , ref, ref) \
74 _(POW, N , ref, ref) \
75 _(NEG, N , ref, ref) \
76 \
77 _(ABS, N , ref, ref) \
78 _(ATAN2, N , ref, ref) \
79 _(LDEXP, N , ref, ref) \
80 _(MIN, C , ref, ref) \
81 _(MAX, C , ref, ref) \
82 _(FPMATH, N , ref, lit) \
83 \
84 /* Overflow-checking arithmetic ops. */ \
85 _(ADDOV, CW, ref, ref) \
86 _(SUBOV, NW, ref, ref) \
87 _(MULOV, CW, ref, ref) \
88 \
89 /* Memory ops. A = array, H = hash, U = upvalue, F = field, S = stack. */ \
90 \
91 /* Memory references. */ \
92 _(AREF, R , ref, ref) \
93 _(HREFK, R , ref, ref) \
94 _(HREF, L , ref, ref) \
95 _(NEWREF, S , ref, ref) \
96 _(UREFO, LW, ref, lit) \
97 _(UREFC, LW, ref, lit) \
98 _(FREF, R , ref, lit) \
99 _(STRREF, N , ref, ref) \
100 _(LREF, L , ___, ___) \
101 \
102 /* Loads and Stores. These must be in the same order. */ \
103 _(ALOAD, L , ref, ___) \
104 _(HLOAD, L , ref, ___) \
105 _(ULOAD, L , ref, ___) \
106 _(FLOAD, L , ref, lit) \
107 _(XLOAD, L , ref, lit) \
108 _(SLOAD, L , lit, lit) \
109 _(VLOAD, L , ref, ___) \
110 \
111 _(ASTORE, S , ref, ref) \
112 _(HSTORE, S , ref, ref) \
113 _(USTORE, S , ref, ref) \
114 _(FSTORE, S , ref, ref) \
115 _(XSTORE, S , ref, ref) \
116 \
117 /* Allocations. */ \
118 _(SNEW, N , ref, ref) /* CSE is ok, not marked as A. */ \
119 _(XSNEW, A , ref, ref) \
120 _(TNEW, AW, lit, lit) \
121 _(TDUP, AW, ref, ___) \
122 _(CNEW, AW, ref, ref) \
123 _(CNEWI, NW, ref, ref) /* CSE is ok, not marked as A. */ \
124 \
125 /* Buffer operations. */ \
126 _(BUFHDR, L , ref, lit) \
127 _(BUFPUT, L , ref, ref) \
128 _(BUFSTR, A , ref, ref) \
129 \
130 /* Barriers. */ \
131 _(TBAR, S , ref, ___) \
132 _(OBAR, S , ref, ref) \
133 _(XBAR, S , ___, ___) \
134 \
135 /* Type conversions. */ \
136 _(CONV, NW, ref, lit) \
137 _(TOBIT, N , ref, ref) \
138 _(TOSTR, N , ref, lit) \
139 _(STRTO, N , ref, ___) \
140 \
141 /* Calls. */ \
142 _(CALLN, N , ref, lit) \
143 _(CALLA, A , ref, lit) \
144 _(CALLL, L , ref, lit) \
145 _(CALLS, S , ref, lit) \
146 _(CALLXS, S , ref, ref) \
147 _(CARG, N , ref, ref) \
148 \
149 /* End of list. */
150
151 /* IR opcodes (max. 256). */
152 typedef enum {
153 #define IRENUM(name, m, m1, m2) IR_##name,
154 IRDEF(IRENUM)
155 #undef IRENUM
156 IR__MAX
157 } IROp;
158
159 /* Stored opcode. */
160 typedef uint8_t IROp1;
161
162 LJ_STATIC_ASSERT(((int)IR_EQ^1) == (int)IR_NE);
163 LJ_STATIC_ASSERT(((int)IR_LT^1) == (int)IR_GE);
164 LJ_STATIC_ASSERT(((int)IR_LE^1) == (int)IR_GT);
165 LJ_STATIC_ASSERT(((int)IR_LT^3) == (int)IR_GT);
166 LJ_STATIC_ASSERT(((int)IR_LT^4) == (int)IR_ULT);
167
168 /* Delta between xLOAD and xSTORE. */
169 #define IRDELTA_L2S ((int)IR_ASTORE - (int)IR_ALOAD)
170
171 LJ_STATIC_ASSERT((int)IR_HLOAD + IRDELTA_L2S == (int)IR_HSTORE);
172 LJ_STATIC_ASSERT((int)IR_ULOAD + IRDELTA_L2S == (int)IR_USTORE);
173 LJ_STATIC_ASSERT((int)IR_FLOAD + IRDELTA_L2S == (int)IR_FSTORE);
174 LJ_STATIC_ASSERT((int)IR_XLOAD + IRDELTA_L2S == (int)IR_XSTORE);
175
176 /* -- Named IR literals --------------------------------------------------- */
177
178 /* FPMATH sub-functions. ORDER FPM. */
179 #define IRFPMDEF(_) \
180 _(FLOOR) _(CEIL) _(TRUNC) /* Must be first and in this order. */ \
181 _(SQRT) _(EXP) _(EXP2) _(LOG) _(LOG2) _(LOG10) \
182 _(SIN) _(COS) _(TAN) \
183 _(OTHER)
184
185 typedef enum {
186 #define FPMENUM(name) IRFPM_##name,
187 IRFPMDEF(FPMENUM)
188 #undef FPMENUM
189 IRFPM__MAX
190 } IRFPMathOp;
191
192 /* FLOAD fields. */
193 #define IRFLDEF(_) \
194 _(STR_LEN, offsetof(GCstr, len)) \
195 _(FUNC_ENV, offsetof(GCfunc, l.env)) \
196 _(FUNC_PC, offsetof(GCfunc, l.pc)) \
197 _(FUNC_FFID, offsetof(GCfunc, l.ffid)) \
198 _(THREAD_ENV, offsetof(lua_State, env)) \
199 _(TAB_META, offsetof(GCtab, metatable)) \
200 _(TAB_ARRAY, offsetof(GCtab, array)) \
201 _(TAB_NODE, offsetof(GCtab, node)) \
202 _(TAB_ASIZE, offsetof(GCtab, asize)) \
203 _(TAB_HMASK, offsetof(GCtab, hmask)) \
204 _(TAB_NOMM, offsetof(GCtab, nomm)) \
205 _(UDATA_META, offsetof(GCudata, metatable)) \
206 _(UDATA_UDTYPE, offsetof(GCudata, udtype)) \
207 _(UDATA_FILE, sizeof(GCudata)) \
208 _(CDATA_CTYPEID, offsetof(GCcdata, ctypeid)) \
209 _(CDATA_PTR, sizeof(GCcdata)) \
210 _(CDATA_INT, sizeof(GCcdata)) \
211 _(CDATA_INT64, sizeof(GCcdata)) \
212 _(CDATA_INT64_4, sizeof(GCcdata) + 4)
213
214 typedef enum {
215 #define FLENUM(name, ofs) IRFL_##name,
216 IRFLDEF(FLENUM)
217 #undef FLENUM
218 IRFL__MAX
219 } IRFieldID;
220
221 /* SLOAD mode bits, stored in op2. */
222 #define IRSLOAD_PARENT 0x01 /* Coalesce with parent trace. */
223 #define IRSLOAD_FRAME 0x02 /* Load hiword of frame. */
224 #define IRSLOAD_TYPECHECK 0x04 /* Needs type check. */
225 #define IRSLOAD_CONVERT 0x08 /* Number to integer conversion. */
226 #define IRSLOAD_READONLY 0x10 /* Read-only, omit slot store. */
227 #define IRSLOAD_INHERIT 0x20 /* Inherited by exits/side traces. */
228
229 /* XLOAD mode, stored in op2. */
230 #define IRXLOAD_READONLY 1 /* Load from read-only data. */
231 #define IRXLOAD_VOLATILE 2 /* Load from volatile data. */
232 #define IRXLOAD_UNALIGNED 4 /* Unaligned load. */
233
234 /* BUFHDR mode, stored in op2. */
235 #define IRBUFHDR_RESET 0 /* Reset buffer. */
236 #define IRBUFHDR_APPEND 1 /* Append to buffer. */
237
238 /* CONV mode, stored in op2. */
239 #define IRCONV_SRCMASK 0x001f /* Source IRType. */
240 #define IRCONV_DSTMASK 0x03e0 /* Dest. IRType (also in ir->t). */
241 #define IRCONV_DSH 5
242 #define IRCONV_NUM_INT ((IRT_NUM<<IRCONV_DSH)|IRT_INT)
243 #define IRCONV_INT_NUM ((IRT_INT<<IRCONV_DSH)|IRT_NUM)
244 #define IRCONV_SEXT 0x0800 /* Sign-extend integer to integer. */
245 #define IRCONV_MODEMASK 0x0fff
246 #define IRCONV_CONVMASK 0xf000
247 #define IRCONV_CSH 12
248 /* Number to integer conversion mode. Ordered by strength of the checks. */
249 #define IRCONV_TOBIT (0<<IRCONV_CSH) /* None. Cache only: TOBIT conv. */
250 #define IRCONV_ANY (1<<IRCONV_CSH) /* Any FP number is ok. */
251 #define IRCONV_INDEX (2<<IRCONV_CSH) /* Check + special backprop rules. */
252 #define IRCONV_CHECK (3<<IRCONV_CSH) /* Number checked for integerness. */
253
254 /* TOSTR mode, stored in op2. */
255 #define IRTOSTR_INT 0 /* Convert integer to string. */
256 #define IRTOSTR_NUM 1 /* Convert number to string. */
257 #define IRTOSTR_CHAR 2 /* Convert char value to string. */
258
259 /* -- IR operands --------------------------------------------------------- */
260
261 /* IR operand mode (2 bit). */
262 typedef enum {
263 IRMref, /* IR reference. */
264 IRMlit, /* 16 bit unsigned literal. */
265 IRMcst, /* Constant literal: i, gcr or ptr. */
266 IRMnone /* Unused operand. */
267 } IRMode;
268 #define IRM___ IRMnone
269
270 /* Mode bits: Commutative, {Normal/Ref, Alloc, Load, Store}, Non-weak guard. */
271 #define IRM_C 0x10
272
273 #define IRM_N 0x00
274 #define IRM_R IRM_N
275 #define IRM_A 0x20
276 #define IRM_L 0x40
277 #define IRM_S 0x60
278
279 #define IRM_W 0x80
280
281 #define IRM_NW (IRM_N|IRM_W)
282 #define IRM_CW (IRM_C|IRM_W)
283 #define IRM_AW (IRM_A|IRM_W)
284 #define IRM_LW (IRM_L|IRM_W)
285
286 #define irm_op1(m) ((IRMode)((m)&3))
287 #define irm_op2(m) ((IRMode)(((m)>>2)&3))
288 #define irm_iscomm(m) ((m) & IRM_C)
289 #define irm_kind(m) ((m) & IRM_S)
290
291 #define IRMODE(name, m, m1, m2) (((IRM##m1)|((IRM##m2)<<2)|(IRM_##m))^IRM_W),
292
293 LJ_DATA const uint8_t lj_ir_mode[IR__MAX+1];
294
295 /* -- IR instruction types ------------------------------------------------ */
296
297 /* Map of itypes to non-negative numbers. ORDER LJ_T.
298 ** LJ_TUPVAL/LJ_TTRACE never appear in a TValue. Use these itypes for
299 ** IRT_P32 and IRT_P64, which never escape the IR.
300 ** The various integers are only used in the IR and can only escape to
301 ** a TValue after implicit or explicit conversion. Their types must be
302 ** contiguous and next to IRT_NUM (see the typerange macros below).
303 */
304 #define IRTDEF(_) \
305 _(NIL, 4) _(FALSE, 4) _(TRUE, 4) _(LIGHTUD, LJ_64 ? 8 : 4) _(STR, 4) \
306 _(P32, 4) _(THREAD, 4) _(PROTO, 4) _(FUNC, 4) _(P64, 8) _(CDATA, 4) \
307 _(TAB, 4) _(UDATA, 4) \
308 _(FLOAT, 4) _(NUM, 8) _(I8, 1) _(U8, 1) _(I16, 2) _(U16, 2) \
309 _(INT, 4) _(U32, 4) _(I64, 8) _(U64, 8) \
310 _(SOFTFP, 4) /* There is room for 9 more types. */
311
312 /* IR result type and flags (8 bit). */
313 typedef enum {
314 #define IRTENUM(name, size) IRT_##name,
315 IRTDEF(IRTENUM)
316 #undef IRTENUM
317 IRT__MAX,
318
319 /* Native pointer type and the corresponding integer type. */
320 IRT_PTR = LJ_64 ? IRT_P64 : IRT_P32,
321 IRT_INTP = LJ_64 ? IRT_I64 : IRT_INT,
322 IRT_UINTP = LJ_64 ? IRT_U64 : IRT_U32,
323 /* TODO_GC64: major changes required for all uses of IRT_P32. */
324
325 /* Additional flags. */
326 IRT_MARK = 0x20, /* Marker for misc. purposes. */
327 IRT_ISPHI = 0x40, /* Instruction is left or right PHI operand. */
328 IRT_GUARD = 0x80, /* Instruction is a guard. */
329
330 /* Masks. */
331 IRT_TYPE = 0x1f,
332 IRT_T = 0xff
333 } IRType;
334
335 #define irtype_ispri(irt) ((uint32_t)(irt) <= IRT_TRUE)
336
337 /* Stored IRType. */
338 typedef struct IRType1 { uint8_t irt; } IRType1;
339
340 #define IRT(o, t) ((uint32_t)(((o)<<8) | (t)))
341 #define IRTI(o) (IRT((o), IRT_INT))
342 #define IRTN(o) (IRT((o), IRT_NUM))
343 #define IRTG(o, t) (IRT((o), IRT_GUARD|(t)))
344 #define IRTGI(o) (IRT((o), IRT_GUARD|IRT_INT))
345
346 #define irt_t(t) ((IRType)(t).irt)
347 #define irt_type(t) ((IRType)((t).irt & IRT_TYPE))
348 #define irt_sametype(t1, t2) ((((t1).irt ^ (t2).irt) & IRT_TYPE) == 0)
349 #define irt_typerange(t, first, last) \
350 ((uint32_t)((t).irt & IRT_TYPE) - (uint32_t)(first) <= (uint32_t)(last-first))
351
352 #define irt_isnil(t) (irt_type(t) == IRT_NIL)
353 #define irt_ispri(t) ((uint32_t)irt_type(t) <= IRT_TRUE)
354 #define irt_islightud(t) (irt_type(t) == IRT_LIGHTUD)
355 #define irt_isstr(t) (irt_type(t) == IRT_STR)
356 #define irt_istab(t) (irt_type(t) == IRT_TAB)
357 #define irt_iscdata(t) (irt_type(t) == IRT_CDATA)
358 #define irt_isfloat(t) (irt_type(t) == IRT_FLOAT)
359 #define irt_isnum(t) (irt_type(t) == IRT_NUM)
360 #define irt_isint(t) (irt_type(t) == IRT_INT)
361 #define irt_isi8(t) (irt_type(t) == IRT_I8)
362 #define irt_isu8(t) (irt_type(t) == IRT_U8)
363 #define irt_isi16(t) (irt_type(t) == IRT_I16)
364 #define irt_isu16(t) (irt_type(t) == IRT_U16)
365 #define irt_isu32(t) (irt_type(t) == IRT_U32)
366 #define irt_isi64(t) (irt_type(t) == IRT_I64)
367 #define irt_isu64(t) (irt_type(t) == IRT_U64)
368
369 #define irt_isfp(t) (irt_isnum(t) || irt_isfloat(t))
370 #define irt_isinteger(t) (irt_typerange((t), IRT_I8, IRT_INT))
371 #define irt_isgcv(t) (irt_typerange((t), IRT_STR, IRT_UDATA))
372 #define irt_isaddr(t) (irt_typerange((t), IRT_LIGHTUD, IRT_UDATA))
373 #define irt_isint64(t) (irt_typerange((t), IRT_I64, IRT_U64))
374
375 #if LJ_GC64
376 #define IRT_IS64 \
377 ((1u<<IRT_NUM)|(1u<<IRT_I64)|(1u<<IRT_U64)|(1u<<IRT_P64)|\
378 (1u<<IRT_LIGHTUD)|(1u<<IRT_STR)|(1u<<IRT_THREAD)|(1u<<IRT_PROTO)|\
379 (1u<<IRT_FUNC)|(1u<<IRT_CDATA)|(1u<<IRT_TAB)|(1u<<IRT_UDATA))
380 #elif LJ_64
381 #define IRT_IS64 \
382 ((1u<<IRT_NUM)|(1u<<IRT_I64)|(1u<<IRT_U64)|(1u<<IRT_P64)|(1u<<IRT_LIGHTUD))
383 #else
384 #define IRT_IS64 \
385 ((1u<<IRT_NUM)|(1u<<IRT_I64)|(1u<<IRT_U64))
386 #endif
387
388 #define irt_is64(t) ((IRT_IS64 >> irt_type(t)) & 1)
389 #define irt_is64orfp(t) (((IRT_IS64|(1u<<IRT_FLOAT))>>irt_type(t)) & 1)
390
391 #define irt_size(t) (lj_ir_type_size[irt_t((t))])
392
393 LJ_DATA const uint8_t lj_ir_type_size[];
394
395 static LJ_AINLINE IRType itype2irt(const TValue *tv)
396 {
397 if (tvisint(tv))
398 return IRT_INT;
399 else if (tvisnum(tv))
400 return IRT_NUM;
401 #if LJ_64 && !LJ_GC64
402 else if (tvislightud(tv))
403 return IRT_LIGHTUD;
404 #endif
405 else
406 return (IRType)~itype(tv);
407 }
408
409 static LJ_AINLINE uint32_t irt_toitype_(IRType t)
410 {
411 lua_assert(!LJ_64 || t != IRT_LIGHTUD);
412 if (LJ_DUALNUM && t > IRT_NUM) {
413 return LJ_TISNUM;
414 } else {
415 lua_assert(t <= IRT_NUM);
416 return ~(uint32_t)t;
417 }
418 }
419
420 #define irt_toitype(t) irt_toitype_(irt_type((t)))
421
422 #define irt_isguard(t) ((t).irt & IRT_GUARD)
423 #define irt_ismarked(t) ((t).irt & IRT_MARK)
424 #define irt_setmark(t) ((t).irt |= IRT_MARK)
425 #define irt_clearmark(t) ((t).irt &= ~IRT_MARK)
426 #define irt_isphi(t) ((t).irt & IRT_ISPHI)
427 #define irt_setphi(t) ((t).irt |= IRT_ISPHI)
428 #define irt_clearphi(t) ((t).irt &= ~IRT_ISPHI)
429
430 /* Stored combined IR opcode and type. */
431 typedef uint16_t IROpT;
432
433 /* -- IR references ------------------------------------------------------- */
434
435 /* IR references. */
436 typedef uint16_t IRRef1; /* One stored reference. */
437 typedef uint32_t IRRef2; /* Two stored references. */
438 typedef uint32_t IRRef; /* Used to pass around references. */
439
440 /* Fixed references. */
441 enum {
442 REF_BIAS = 0x8000,
443 REF_TRUE = REF_BIAS-3,
444 REF_FALSE = REF_BIAS-2,
445 REF_NIL = REF_BIAS-1, /* \--- Constants grow downwards. */
446 REF_BASE = REF_BIAS, /* /--- IR grows upwards. */
447 REF_FIRST = REF_BIAS+1,
448 REF_DROP = 0xffff
449 };
450
451 /* Note: IRMlit operands must be < REF_BIAS, too!
452 ** This allows for fast and uniform manipulation of all operands
453 ** without looking up the operand mode in lj_ir_mode:
454 ** - CSE calculates the maximum reference of two operands.
455 ** This must work with mixed reference/literal operands, too.
456 ** - DCE marking only checks for operand >= REF_BIAS.
457 ** - LOOP needs to substitute reference operands.
458 ** Constant references and literals must not be modified.
459 */
460
461 #define IRREF2(lo, hi) ((IRRef2)(lo) | ((IRRef2)(hi) << 16))
462
463 #define irref_isk(ref) ((ref) < REF_BIAS)
464
465 /* Tagged IR references (32 bit).
466 **
467 ** +-------+-------+---------------+
468 ** | irt | flags | ref |
469 ** +-------+-------+---------------+
470 **
471 ** The tag holds a copy of the IRType and speeds up IR type checks.
472 */
473 typedef uint32_t TRef;
474
475 #define TREF_REFMASK 0x0000ffff
476 #define TREF_FRAME 0x00010000
477 #define TREF_CONT 0x00020000
478
479 #define TREF(ref, t) ((TRef)((ref) + ((t)<<24)))
480
481 #define tref_ref(tr) ((IRRef1)(tr))
482 #define tref_t(tr) ((IRType)((tr)>>24))
483 #define tref_type(tr) ((IRType)(((tr)>>24) & IRT_TYPE))
484 #define tref_typerange(tr, first, last) \
485 ((((tr)>>24) & IRT_TYPE) - (TRef)(first) <= (TRef)(last-first))
486
487 #define tref_istype(tr, t) (((tr) & (IRT_TYPE<<24)) == ((t)<<24))
488 #define tref_isnil(tr) (tref_istype((tr), IRT_NIL))
489 #define tref_isfalse(tr) (tref_istype((tr), IRT_FALSE))
490 #define tref_istrue(tr) (tref_istype((tr), IRT_TRUE))
491 #define tref_islightud(tr) (tref_istype((tr), IRT_LIGHTUD))
492 #define tref_isstr(tr) (tref_istype((tr), IRT_STR))
493 #define tref_isfunc(tr) (tref_istype((tr), IRT_FUNC))
494 #define tref_iscdata(tr) (tref_istype((tr), IRT_CDATA))
495 #define tref_istab(tr) (tref_istype((tr), IRT_TAB))
496 #define tref_isudata(tr) (tref_istype((tr), IRT_UDATA))
497 #define tref_isnum(tr) (tref_istype((tr), IRT_NUM))
498 #define tref_isint(tr) (tref_istype((tr), IRT_INT))
499
500 #define tref_isbool(tr) (tref_typerange((tr), IRT_FALSE, IRT_TRUE))
501 #define tref_ispri(tr) (tref_typerange((tr), IRT_NIL, IRT_TRUE))
502 #define tref_istruecond(tr) (!tref_typerange((tr), IRT_NIL, IRT_FALSE))
503 #define tref_isinteger(tr) (tref_typerange((tr), IRT_I8, IRT_INT))
504 #define tref_isnumber(tr) (tref_typerange((tr), IRT_NUM, IRT_INT))
505 #define tref_isnumber_str(tr) (tref_isnumber((tr)) || tref_isstr((tr)))
506 #define tref_isgcv(tr) (tref_typerange((tr), IRT_STR, IRT_UDATA))
507
508 #define tref_isk(tr) (irref_isk(tref_ref((tr))))
509 #define tref_isk2(tr1, tr2) (irref_isk(tref_ref((tr1) | (tr2))))
510
511 #define TREF_PRI(t) (TREF(REF_NIL-(t), (t)))
512 #define TREF_NIL (TREF_PRI(IRT_NIL))
513 #define TREF_FALSE (TREF_PRI(IRT_FALSE))
514 #define TREF_TRUE (TREF_PRI(IRT_TRUE))
515
516 /* -- IR format ----------------------------------------------------------- */
517
518 /* IR instruction format (64 bit).
519 **
520 ** 16 16 8 8 8 8
521 ** +-------+-------+---+---+---+---+
522 ** | op1 | op2 | t | o | r | s |
523 ** +-------+-------+---+---+---+---+
524 ** | op12/i/gco | ot | prev | (alternative fields in union)
525 ** +---------------+-------+-------+
526 ** 32 16 16
527 **
528 ** prev is only valid prior to register allocation and then reused for r + s.
529 */
530
531 typedef union IRIns {
532 struct {
533 LJ_ENDIAN_LOHI(
534 IRRef1 op1; /* IR operand 1. */
535 , IRRef1 op2; /* IR operand 2. */
536 )
537 IROpT ot; /* IR opcode and type (overlaps t and o). */
538 IRRef1 prev; /* Previous ins in same chain (overlaps r and s). */
539 };
540 struct {
541 IRRef2 op12; /* IR operand 1 and 2 (overlaps op1 and op2). */
542 LJ_ENDIAN_LOHI(
543 IRType1 t; /* IR type. */
544 , IROp1 o; /* IR opcode. */
545 )
546 LJ_ENDIAN_LOHI(
547 uint8_t r; /* Register allocation (overlaps prev). */
548 , uint8_t s; /* Spill slot allocation (overlaps prev). */
549 )
550 };
551 int32_t i; /* 32 bit signed integer literal (overlaps op12). */
552 GCRef gcr; /* GCobj constant (overlaps op12). */
553 MRef ptr; /* Pointer constant (overlaps op12). */
554 } IRIns;
555
556 /* TODO_GC64: major changes required. */
557 #define ir_kgc(ir) check_exp((ir)->o == IR_KGC, gcref((ir)->gcr))
558 #define ir_kstr(ir) (gco2str(ir_kgc((ir))))
559 #define ir_ktab(ir) (gco2tab(ir_kgc((ir))))
560 #define ir_kfunc(ir) (gco2func(ir_kgc((ir))))
561 #define ir_kcdata(ir) (gco2cd(ir_kgc((ir))))
562 #define ir_knum(ir) check_exp((ir)->o == IR_KNUM, mref((ir)->ptr, cTValue))
563 #define ir_kint64(ir) check_exp((ir)->o == IR_KINT64, mref((ir)->ptr,cTValue))
564 #define ir_k64(ir) \
565 check_exp((ir)->o == IR_KNUM || (ir)->o == IR_KINT64, mref((ir)->ptr,cTValue))
566 #define ir_kptr(ir) \
567 check_exp((ir)->o == IR_KPTR || (ir)->o == IR_KKPTR, mref((ir)->ptr, void))
568
569 /* A store or any other op with a non-weak guard has a side-effect. */
570 static LJ_AINLINE int ir_sideeff(IRIns *ir)
571 {
572 return (((ir->t.irt | ~IRT_GUARD) & lj_ir_mode[ir->o]) >= IRM_S);
573 }
574
575 LJ_STATIC_ASSERT((int)IRT_GUARD == (int)IRM_W);
576
577 #endif
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