| blob | c74c2442738208d323d46f42ca84b17d7754ee4c |
1 /*
2 * method-to-ir.c: Convert CIL to the JIT internal representation
3 *
4 * Author:
5 * Paolo Molaro (lupus@ximian.com)
6 * Dietmar Maurer (dietmar@ximian.com)
7 *
8 * (C) 2002 Ximian, Inc.
9 */
11 #include <config.h>
12 #include <signal.h>
14 #ifdef HAVE_UNISTD_H
15 #include <unistd.h>
16 #endif
18 #include <math.h>
19 #include <string.h>
20 #include <ctype.h>
22 #ifdef HAVE_SYS_TIME_H
23 #include <sys/time.h>
24 #endif
26 #ifdef HAVE_ALLOCA_H
27 #include <alloca.h>
28 #endif
30 #include <mono/utils/memcheck.h>
32 #include <mono/metadata/assembly.h>
33 #include <mono/metadata/loader.h>
34 #include <mono/metadata/tabledefs.h>
35 #include <mono/metadata/class.h>
36 #include <mono/metadata/object.h>
37 #include <mono/metadata/exception.h>
38 #include <mono/metadata/opcodes.h>
39 #include <mono/metadata/mono-endian.h>
40 #include <mono/metadata/tokentype.h>
41 #include <mono/metadata/tabledefs.h>
42 #include <mono/metadata/marshal.h>
43 #include <mono/metadata/debug-helpers.h>
44 #include <mono/metadata/mono-debug.h>
45 #include <mono/metadata/gc-internal.h>
46 #include <mono/metadata/security-manager.h>
47 #include <mono/metadata/threads-types.h>
48 #include <mono/metadata/security-core-clr.h>
49 #include <mono/metadata/monitor.h>
50 #include <mono/metadata/profiler-private.h>
51 #include <mono/metadata/profiler.h>
52 #include <mono/utils/mono-compiler.h>
53 #include <mono/metadata/mono-basic-block.h>
64 #define BRANCH_COST 100
65 #define INLINE_LENGTH_LIMIT 20
66 #define INLINE_FAILURE do {\
67 if ((cfg->method != method) && (method->wrapper_type == MONO_WRAPPER_NONE))\
68 goto inline_failure;\
69 } while (0)
70 #define CHECK_CFG_EXCEPTION do {\
71 if (cfg->exception_type != MONO_EXCEPTION_NONE)\
72 goto exception_exit;\
73 } while (0)
74 #define METHOD_ACCESS_FAILURE do { \
75 char *method_fname = mono_method_full_name (method, TRUE); \
76 char *cil_method_fname = mono_method_full_name (cil_method, TRUE); \
77 cfg->exception_type = MONO_EXCEPTION_METHOD_ACCESS; \
78 cfg->exception_message = g_strdup_printf ("Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname); \
79 g_free (method_fname); \
80 g_free (cil_method_fname); \
81 goto exception_exit; \
82 } while (0)
83 #define FIELD_ACCESS_FAILURE do { \
84 char *method_fname = mono_method_full_name (method, TRUE); \
85 char *field_fname = mono_field_full_name (field); \
86 cfg->exception_type = MONO_EXCEPTION_FIELD_ACCESS; \
87 cfg->exception_message = g_strdup_printf ("Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname); \
88 g_free (method_fname); \
89 g_free (field_fname); \
90 goto exception_exit; \
91 } while (0)
92 #define GENERIC_SHARING_FAILURE(opcode) do { \
93 if (cfg->generic_sharing_context) { \
94 if (cfg->verbose_level > 2) \
95 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", method->klass->name_space, method->klass->name, method->name, method->signature->param_count, mono_opcode_name ((opcode)), __LINE__); \
96 cfg->exception_type = MONO_EXCEPTION_GENERIC_SHARING_FAILED; \
97 goto exception_exit; \
98 } \
99 } while (0)
101 /* Determine whenever 'ins' represents a load of the 'this' argument */
102 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
110 MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
111 void mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native);
114 /* helper methods signature */
122 /*
123 * Instruction metadata
124 */
125 #ifdef MINI_OP
126 #undef MINI_OP
127 #endif
128 #ifdef MINI_OP3
129 #undef MINI_OP3
130 #endif
132 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
138 #if SIZEOF_REGISTER == 8
139 #define LREG IREG
140 #else
142 #endif
143 /* keep in sync with the enum in mini.h */
144 const char
145 ins_info[] = {
147 };
148 #undef MINI_OP
149 #undef MINI_OP3
151 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
152 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
153 /*
154 * This should contain the index of the last sreg + 1. This is not the same
155 * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
156 */
159 };
160 #undef MINI_OP
161 #undef MINI_OP3
163 #define MONO_INIT_VARINFO(vi,id) do { \
164 (vi)->range.first_use.pos.bid = 0xffff; \
165 (vi)->reg = -1; \
166 (vi)->idx = (id); \
167 } while (0)
169 void
171 {
175 }
177 guint32
179 {
181 }
183 guint32
185 {
187 }
189 guint32
191 {
193 }
195 guint32
197 {
199 }
201 guint
203 {
207 handle_enum:
233 #if SIZEOF_REGISTER == 8
235 #else
237 #endif
246 }
261 }
263 }
265 void
267 {
280 }
282 /*
283 * Can't put this at the beginning, since other files reference stuff from this
284 * file.
285 */
286 #ifndef DISABLE_JIT
288 #define UNVERIFIED do { if (mini_get_debug_options ()->break_on_unverified) G_BREAKPOINT (); else goto unverified; } while (0)
290 #define GET_BBLOCK(cfg,tblock,ip) do { \
291 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
292 if (!(tblock)) { \
293 if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
294 NEW_BBLOCK (cfg, (tblock)); \
295 (tblock)->cil_code = (ip); \
296 ADD_BBLOCK (cfg, (tblock)); \
297 } \
298 } while (0)
300 #if defined(TARGET_X86) || defined(TARGET_AMD64)
301 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
302 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
303 (dest)->dreg = alloc_preg ((cfg)); \
304 (dest)->sreg1 = (sr1); \
305 (dest)->sreg2 = (sr2); \
306 (dest)->inst_imm = (imm); \
307 (dest)->backend.shift_amount = (shift); \
308 MONO_ADD_INS ((cfg)->cbb, (dest)); \
309 } while (0)
310 #endif
312 #if SIZEOF_REGISTER == 8
313 #define ADD_WIDEN_OP(ins, arg1, arg2) do { \
315 if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) { \
316 MonoInst *widen; \
317 int dr = alloc_preg (cfg); \
318 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg); \
319 (ins)->sreg2 = widen->dreg; \
320 } \
321 } while (0)
322 #else
323 #define ADD_WIDEN_OP(ins, arg1, arg2)
324 #endif
326 #define ADD_BINOP(op) do { \
327 MONO_INST_NEW (cfg, ins, (op)); \
328 sp -= 2; \
329 ins->sreg1 = sp [0]->dreg; \
330 ins->sreg2 = sp [1]->dreg; \
331 type_from_op (ins, sp [0], sp [1]); \
332 CHECK_TYPE (ins); \
334 ADD_WIDEN_OP (ins, sp [0], sp [1]); \
335 ins->dreg = alloc_dreg ((cfg), (ins)->type); \
336 MONO_ADD_INS ((cfg)->cbb, (ins)); \
337 *sp++ = mono_decompose_opcode ((cfg), (ins)); \
338 } while (0)
340 #define ADD_UNOP(op) do { \
341 MONO_INST_NEW (cfg, ins, (op)); \
342 sp--; \
343 ins->sreg1 = sp [0]->dreg; \
344 type_from_op (ins, sp [0], NULL); \
345 CHECK_TYPE (ins); \
346 (ins)->dreg = alloc_dreg ((cfg), (ins)->type); \
347 MONO_ADD_INS ((cfg)->cbb, (ins)); \
348 *sp++ = mono_decompose_opcode (cfg, ins); \
349 } while (0)
351 #define ADD_BINCOND(next_block) do { \
352 MonoInst *cmp; \
353 sp -= 2; \
354 MONO_INST_NEW(cfg, cmp, OP_COMPARE); \
355 cmp->sreg1 = sp [0]->dreg; \
356 cmp->sreg2 = sp [1]->dreg; \
357 type_from_op (cmp, sp [0], sp [1]); \
358 CHECK_TYPE (cmp); \
359 type_from_op (ins, sp [0], sp [1]); \
360 ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2); \
361 GET_BBLOCK (cfg, tblock, target); \
362 link_bblock (cfg, bblock, tblock); \
363 ins->inst_true_bb = tblock; \
364 if ((next_block)) { \
365 link_bblock (cfg, bblock, (next_block)); \
366 ins->inst_false_bb = (next_block); \
367 start_new_bblock = 1; \
368 } else { \
369 GET_BBLOCK (cfg, tblock, ip); \
370 link_bblock (cfg, bblock, tblock); \
371 ins->inst_false_bb = tblock; \
372 start_new_bblock = 2; \
373 } \
374 if (sp != stack_start) { \
375 handle_stack_args (cfg, stack_start, sp - stack_start); \
376 CHECK_UNVERIFIABLE (cfg); \
377 } \
378 MONO_ADD_INS (bblock, cmp); \
379 MONO_ADD_INS (bblock, ins); \
380 } while (0)
382 /* *
383 * link_bblock: Links two basic blocks
384 *
385 * links two basic blocks in the control flow graph, the 'from'
386 * argument is the starting block and the 'to' argument is the block
387 * the control flow ends to after 'from'.
388 */
389 static void
391 {
395 #if 0
398 printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
399 else
404 else
406 }
407 #endif
414 }
415 }
420 }
424 }
431 }
432 }
437 }
441 }
442 }
444 void
446 {
448 }
450 /**
451 * mono_find_block_region:
452 *
453 * We mark each basic block with a region ID. We use that to avoid BB
454 * optimizations when blocks are in different regions.
455 *
456 * Returns:
457 * A region token that encodes where this region is, and information
458 * about the clause owner for this block.
459 *
460 * The region encodes the try/catch/filter clause that owns this block
461 * as well as the type. -1 is a special value that represents a block
462 * that is in none of try/catch/filter.
463 */
464 static int
466 {
474 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
483 else
485 }
489 }
492 }
496 {
512 }
513 }
514 }
516 }
518 static void
520 {
528 /* prevent it from being register allocated */
532 }
534 MonoInst *
536 {
538 }
542 {
550 /* prevent it from being register allocated */
556 }
558 /*
559 * Returns the type used in the eval stack when @type is loaded.
560 * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
561 */
562 void
564 {
571 }
573 handle_enum:
617 }
627 /* FIXME: all the arguments must be references for now,
628 * later look inside cfg and see if the arg num is
629 * really a reference
630 */
636 }
637 }
639 /*
640 * The following tables are used to quickly validate the IL code in type_from_op ().
641 */
642 static const char
652 };
654 static const char
655 neg_table [] = {
657 };
659 /* reduce the size of this table */
660 static const char
670 };
672 static const char
674 /* Inv i L p F & O vt */
683 };
685 /* reduce the size of this table */
686 static const char
696 };
698 /*
699 * Tables to map from the non-specific opcode to the matching
700 * type-specific opcode.
701 */
702 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
703 static const guint16
706 };
708 /* handles from CEE_NEG to CEE_CONV_U8 */
709 static const guint16
712 };
714 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
715 static const guint16
717 0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2
718 };
720 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
721 static const guint16
723 0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
724 };
726 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
727 static const guint16
729 0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1
730 };
732 /* handles from CEE_BEQ to CEE_BLT_UN */
733 static const guint16
735 0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ
736 };
738 /* handles from CEE_CEQ to CEE_CLT_UN */
739 static const guint16
741 0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ
742 };
744 /*
745 * Sets ins->type (the type on the eval stack) according to the
746 * type of the opcode and the arguments to it.
747 * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
748 *
749 * FIXME: this function sets ins->type unconditionally in some cases, but
750 * it should set it to invalid for some types (a conv.x on an object)
751 */
752 static void
756 /* binops */
762 /* FIXME: check unverifiable args for STACK_MP */
784 if ((src1->type == STACK_I8) || ((SIZEOF_REGISTER == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
788 else
793 if ((src1->type == STACK_I8) || ((SIZEOF_REGISTER == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
819 /* unops */
827 else
848 }
881 #if SIZEOF_REGISTER == 8
883 #else
885 #endif
893 }
961 }
965 }
967 static const char
968 ldind_type [] = {
969 STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
970 };
972 #if 0
974 static const char
977 };
979 static int
991 }
992 args++;
993 }
1014 }
1027 }
1028 /*if (!param_table [args [i].type] [sig->params [i]->type])
1029 return 0;*/
1030 }
1032 }
1033 #endif
1035 /*
1036 * When we need a pointer to the current domain many times in a method, we
1037 * call mono_domain_get() once and we store the result in a local variable.
1038 * This function returns the variable that represents the MonoDomain*.
1039 */
1042 {
1046 }
1048 /*
1049 * The got_var contains the address of the Global Offset Table when AOT
1050 * compiling.
1051 */
1052 MonoInst *
1054 {
1055 #ifdef MONO_ARCH_NEED_GOT_VAR
1060 }
1062 #else
1064 #endif
1065 }
1069 {
1074 /* force the var to be stack allocated */
1076 }
1079 }
1094 }
1096 }
1100 {
1135 else
1140 }
1143 }
1147 {
1181 }
1183 }
1185 /*
1186 * We try to share variables when possible
1187 */
1190 {
1194 /* inlining can result in deeper stacks */
1214 }
1216 }
1218 static void
1220 {
1221 /*
1222 * Don't use this if a generic_context is set, since that means AOT can't
1223 * look up the method using just the image+token.
1224 * table == 0 means this is a reference made from a wrapper.
1225 */
1227 MonoJumpInfoToken *jump_info_token = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1231 }
1232 }
1234 /*
1235 * This function is called to handle items that are left on the evaluation stack
1236 * at basic block boundaries. What happens is that we save the values to local variables
1237 * and we reload them later when first entering the target basic block (with the
1238 * handle_loaded_temps () function).
1239 * A single joint point will use the same variables (stored in the array bb->out_stack or
1240 * bb->in_stack, if the basic block is before or after the joint point).
1241 *
1242 * This function needs to be called _before_ emitting the last instruction of
1243 * the bb (i.e. before emitting a branch).
1244 * If the stack merge fails at a join point, cfg->unverifiable is set.
1245 */
1246 static void
1248 {
1253 gboolean found;
1261 //printf ("bblock %d has out:", bb->block_num);
1265 /* exception handlers are linked, but they should not be considered for stack args */
1268 //printf (" %d", outb->block_num);
1273 }
1274 }
1275 //printf ("\n");
1279 /*
1280 * try to reuse temps already allocated for this purpouse, if they occupy the same
1281 * stack slot and if they are of the same type.
1282 * This won't cause conflicts since if 'local' is used to
1283 * store one of the values in the in_stack of a bblock, then
1284 * the same variable will be used for the same outgoing stack
1285 * slot as well.
1286 * This doesn't work when inlining methods, since the bblocks
1287 * in the inlined methods do not inherit their in_stack from
1288 * the bblock they are inlined to. See bug #58863 for an
1289 * example.
1290 */
1293 else
1295 }
1296 }
1297 }
1301 /* exception handlers are linked, but they should not be considered for stack args */
1308 }
1310 }
1313 }
1323 }
1325 /*
1326 * It is possible that the out bblocks already have in_stack assigned, and
1327 * the in_stacks differ. In this case, we will store to all the different
1328 * in_stacks.
1329 */
1334 /* Find a bblock which has a different in_stack */
1338 /* exception handlers are linked, but they should not be considered for stack args */
1340 bindex++;
1342 }
1350 }
1354 }
1355 bindex ++;
1356 }
1357 }
1358 }
1360 /* Emit code which loads interface_offsets [klass->interface_id]
1361 * The array is stored in memory before vtable.
1362 */
1363 static void
1364 mini_emit_load_intf_reg_vtable (MonoCompile *cfg, int intf_reg, int vtable_reg, MonoClass *klass)
1365 {
1373 }
1375 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, intf_reg, vtable_reg, -((klass->interface_id + 1) * SIZEOF_VOID_P));
1376 }
1377 }
1379 /*
1380 * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1381 * stored in "klass_reg" implements the interface "klass".
1382 */
1383 static void
1384 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1385 {
1389 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, interface_bitmap));
1401 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1407 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1408 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1409 }
1410 }
1412 /*
1413 * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1414 * stored in "vtable_reg" implements the interface "klass".
1415 */
1416 static void
1417 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1418 {
1422 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, ibitmap_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, interface_bitmap));
1434 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1440 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1441 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_IAND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1442 }
1443 }
1445 /*
1446 * Emit code which checks whenever the interface id of @klass is smaller than
1447 * than the value given by max_iid_reg.
1448 */
1449 static void
1452 {
1457 }
1458 else
1462 else
1464 }
1466 /* Same as above, but obtains max_iid from a vtable */
1467 static void
1470 {
1473 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, max_interface_id));
1475 }
1477 /* Same as above, but obtains max_iid from a klass */
1478 static void
1481 {
1484 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, max_interface_id));
1486 }
1488 static void
1489 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1490 {
1496 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1499 }
1500 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1510 }
1512 }
1514 static void
1515 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1516 {
1518 }
1520 static void
1521 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1522 {
1530 else
1532 }
1534 /*
1535 * Variant of the above that takes a register to the class, not the vtable.
1536 */
1537 static void
1538 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1539 {
1547 else
1549 }
1552 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1553 {
1562 }
1564 }
1568 {
1570 }
1573 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1574 {
1581 }
1583 }
1585 static void
1586 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1588 static void
1589 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1590 {
1596 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, rank));
1599 // MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
1600 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
1604 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1607 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1614 // Pass -1 as obj_reg to skip the check below for arrays of arrays
1616 }
1619 /* Check that the object is a vector too */
1624 }
1631 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1634 }
1635 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1638 }
1639 }
1641 static void
1642 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1643 {
1645 }
1647 static void
1649 {
1668 #if SIZEOF_REGISTER == 8
1672 #endif
1673 }
1674 }
1680 else
1684 /* This could be optimized further if neccesary */
1689 }
1691 }
1693 #if !NO_UNALIGNED_ACCESS
1699 }
1704 }
1705 }
1706 #endif
1712 }
1717 }
1722 }
1723 }
1727 void
1728 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1729 {
1735 /*FIXME arbitrary hack to avoid unbound code expansion.*/
1739 /* This could be optimized further if neccesary */
1747 }
1748 }
1750 #if !NO_UNALIGNED_ACCESS
1759 }
1760 }
1761 #endif
1770 }
1778 }
1786 }
1787 }
1789 #ifndef DISABLE_JIT
1791 static int
1792 ret_type_to_call_opcode (MonoType *type, int calli, int virt, MonoGenericSharingContext *gsctx)
1793 {
1797 handle_enum:
1841 }
1843 }
1845 /*
1846 * target_type_is_incompatible:
1847 * @cfg: MonoCompile context
1848 *
1849 * Check that the item @arg on the evaluation stack can be stored
1850 * in the target type (can be a local, or field, etc).
1851 * The cfg arg can be used to check if we need verification or just
1852 * validity checks.
1853 *
1854 * Returns: non-0 value if arg can't be stored on a target.
1855 */
1856 static int
1858 {
1863 /* FIXME: check that the pointed to types match */
1869 }
1887 /* STACK_MP is needed when setting pinned locals */
1904 /* FIXME: check type compatibility */
1941 /* FIXME: check type compatibility */
1943 }
1946 /* FIXME: all the arguments must be references for now,
1947 * later look inside cfg and see if the arg num is
1948 * really a reference
1949 */
1956 }
1958 }
1960 /*
1961 * Prepare arguments for passing to a function call.
1962 * Return a non-zero value if the arguments can't be passed to the given
1963 * signature.
1964 * The type checks are not yet complete and some conversions may need
1965 * casts on 32 or 64 bit architectures.
1966 *
1967 * FIXME: implement this using target_type_is_incompatible ()
1968 */
1969 static int
1971 {
1978 args++;
1979 }
1985 }
1988 handle_enum:
2008 if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2033 }
2048 }
2049 }
2051 }
2053 static int
2055 {
2069 }
2072 }
2074 static int
2076 {
2090 }
2093 }
2095 #ifdef MONO_ARCH_HAVE_IMT
2096 static void
2098 {
2099 #ifdef MONO_ARCH_IMT_REG
2112 }
2115 #else
2117 #endif
2118 }
2119 #endif
2123 {
2131 }
2136 {
2138 #ifdef MONO_ARCH_SOFT_FLOAT
2140 #endif
2144 else
2145 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (sig->ret, calli, virtual, cfg->generic_sharing_context));
2155 //g_assert_not_reached ();
2156 }
2163 /*
2164 * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2165 * address of return value to increase optimization opportunities.
2166 * Before vtype decomposition, the dreg of the call ins itself represents the
2167 * fact the call modifies the return value. After decomposition, the call will
2168 * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2169 * will be transformed into an LDADDR.
2170 */
2174 /* We reference the call too since call->dreg could change during optimization */
2184 #ifdef MONO_ARCH_SOFT_FLOAT
2186 /*
2187 * If the call has a float argument, we would need to do an r8->r4 conversion using
2188 * an icall, but that cannot be done during the call sequence since it would clobber
2189 * the call registers + the stack. So we do it before emitting the call.
2190 */
2197 else
2208 /* The result will be in an int vreg */
2210 }
2211 }
2212 }
2213 #endif
2215 #ifdef ENABLE_LLVM
2218 else
2220 #else
2222 #endif
2228 }
2232 {
2240 }
2243 mono_emit_rgctx_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *rgctx_arg)
2244 {
2245 #ifdef MONO_ARCH_RGCTX_REG
2252 }
2258 }
2260 #else
2263 #endif
2264 }
2267 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, int rgctx_type);
2274 {
2275 gboolean might_be_remote;
2282 /* Create the real signature */
2283 /* FIXME: Cache these */
2288 }
2300 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2303 }
2309 else
2319 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
2320 if ((method->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (method->name, "Invoke"))) {
2323 /* Make a call to delegate->invoke_impl */
2330 }
2331 #endif
2338 /*
2339 * the method is not virtual, we just need to ensure this is not null
2340 * and then we can call the method directly.
2341 */
2343 /*
2344 * The check above ensures method is not gshared, this is needed since
2345 * gshared methods can't have wrappers.
2346 */
2348 }
2358 }
2361 /*
2362 * the method is virtual, but we can statically dispatch since either
2363 * it's class or the method itself are sealed.
2364 * But first we need to ensure it's not a null reference.
2365 */
2372 }
2377 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, G_STRUCT_OFFSET (MonoObject, vtable));
2380 #ifdef MONO_ARCH_HAVE_IMT
2386 }
2387 #endif
2392 }
2397 #ifdef MONO_ARCH_HAVE_IMT
2401 }
2402 #endif
2403 }
2407 }
2412 }
2415 mono_emit_rgctx_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig,
2417 {
2418 #ifdef MONO_ARCH_RGCTX_REG
2420 #endif
2425 #ifdef MONO_ARCH_RGCTX_REG
2428 #else
2429 NOT_IMPLEMENTED;
2430 #endif
2431 }
2436 #ifdef MONO_ARCH_RGCTX_REG
2440 #else
2441 NOT_IMPLEMENTED;
2442 #endif
2443 }
2446 }
2448 MonoInst*
2450 {
2451 return mono_emit_method_call_full (cfg, method, mono_method_signature (method), args, this, NULL);
2452 }
2454 MonoInst*
2457 {
2468 }
2470 MonoInst*
2472 {
2478 }
2480 /*
2481 * mono_emit_abs_call:
2482 *
2483 * Emit a call to the runtime function described by PATCH_TYPE and DATA.
2484 */
2488 {
2492 /*
2493 * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2494 * handle it.
2495 */
2502 }
2506 {
2511 /*
2512 * Native code might return non register sized integers
2513 * without initializing the upper bits.
2514 */
2530 }
2539 }
2540 }
2541 }
2544 }
2548 {
2554 }
2556 }
2558 /*
2559 * Emit code to copy a valuetype of type @klass whose address is stored in
2560 * @src->dreg to memory whose address is stored at @dest->dreg.
2561 */
2562 void
2563 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
2564 {
2571 /*
2572 * This check breaks with spilled vars... need to handle it during verification anyway.
2573 * g_assert (klass && klass == src->klass && klass == dest->klass);
2574 */
2578 else
2581 #if HAVE_WRITE_BARRIERS
2582 /* if native is true there should be no references in the struct */
2584 /* Avoid barriers when storing to the stack */
2602 }
2603 }
2606 }
2607 }
2608 #endif
2611 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
2620 }
2621 }
2625 {
2631 }
2633 }
2635 void
2637 {
2640 guint32 align;
2643 /* FIXME: Optimize this for the case when dest is an LDADDR */
2650 }
2657 }
2658 }
2662 {
2695 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, G_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2697 }
2706 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
2708 }
2709 }
2712 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, int info_type)
2713 {
2723 }
2727 {
2728 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
2729 }
2734 {
2735 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
2739 }
2741 /*
2742 * emit_get_rgctx_method:
2743 *
2744 * Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
2745 * normal constants, else emit a load from the rgctx.
2746 */
2750 {
2763 }
2765 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
2769 }
2770 }
2775 {
2776 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
2780 }
2782 /*
2783 * On return the caller must check @klass for load errors.
2784 */
2785 static void
2787 {
2804 }
2806 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline, &vtable_arg);
2807 #ifdef MONO_ARCH_VTABLE_REG
2810 #else
2811 NOT_IMPLEMENTED;
2812 #endif
2813 }
2815 /*
2816 * On return the caller must check @array_class for load errors
2817 */
2818 static void
2820 {
2838 }
2859 }
2860 }
2863 }
2865 static void
2867 {
2877 }
2883 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
2885 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
2886 }
2887 }
2889 static void
2891 {
2892 /* Reset the variables holding the cast details */
2897 /* It is enough to reset the from field */
2898 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
2899 }
2900 }
2902 /**
2903 * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
2904 * generic code is generated.
2905 */
2908 {
2914 /* FIXME: What if the class is shared? We might not
2915 have to get the address of the method from the
2916 RGCTX. */
2918 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
2925 }
2926 }
2930 {
2939 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
2940 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
2942 /* FIXME: generics */
2945 // Check rank == 0
2950 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, element_class));
2955 /* This assertion is from the unboxcast insn */
2967 }
2969 NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_PTR), obj_reg, sizeof (MonoObject));
2975 }
2977 /*
2978 * Returns NULL and set the cfg exception on error.
2979 */
2982 {
2991 } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
2992 /* This happens often in argument checking code, eg. throw new FooException... */
2993 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
2999 gboolean pass_lw;
3005 }
3007 #ifndef MONO_CROSS_COMPILE
3009 #endif
3014 }
3021 }
3024 }
3025 }
3028 }
3032 gboolean for_box)
3033 {
3038 /*
3039 FIXME: we cannot get managed_alloc here because we can't get
3040 the class's vtable (because it's not a closed class)
3042 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3043 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (vtable, for_box);
3044 */
3054 }
3058 }
3061 }
3063 /*
3064 * Returns NULL and set the cfg exception on error.
3065 */
3068 {
3074 }
3080 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3083 }
3086 handle_box_from_inst (MonoCompile *cfg, MonoInst *val, MonoClass *klass, int context_used, MonoInst *data_inst)
3087 {
3092 /* FIXME: What if the class is shared? We might not
3093 have to get the method address from the RGCTX. */
3095 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3102 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3105 }
3106 }
3108 // FIXME: This doesn't work yet (class libs tests fail?)
3109 #define is_complex_isinst(klass) (TRUE || (klass->flags & TYPE_ATTRIBUTE_INTERFACE) || klass->rank || mono_class_is_nullable (klass) || klass->marshalbyref || (klass->flags & TYPE_ATTRIBUTE_SEALED) || mono_class_has_variant_generic_params (klass) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
3111 /*
3112 * Returns NULL and set the cfg exception on error.
3113 */
3116 {
3129 /* Complex case, handle by an icall */
3131 /* obj */
3134 /* klass */
3139 /* Simple case, handled by the code below */
3140 }
3141 }
3158 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3159 /* the remoting code is broken, access the class for now */
3160 if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3166 }
3171 }
3176 }
3177 }
3184 }
3186 /*
3187 * Returns NULL and set the cfg exception on error.
3188 */
3191 {
3205 /* Complex case, handle by an icall */
3207 /* obj */
3210 /* klass */
3215 /* Simple case, the code below can handle it */
3216 }
3217 }
3223 /* Do the assignment at the beginning, so the other assignment can be if converted */
3235 /* the is_null_bb target simply copies the input register to the output */
3245 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3249 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
3253 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
3257 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
3267 /* Check that the object is a vector too */
3272 }
3274 /* the is_null_bb target simply copies the input register to the output */
3276 }
3280 /* the is_null_bb target simply copies the input register to the output */
3283 if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3285 /* the remoting code is broken, access the class for now */
3286 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3292 }
3297 }
3302 /* the is_null_bb target simply copies the input register to the output */
3304 }
3305 }
3306 }
3318 }
3322 {
3323 /* This opcode takes as input an object reference and a class, and returns:
3324 0) if the object is an instance of the class,
3325 1) if the object is not instance of the class,
3326 2) if the object is a proxy whose type cannot be determined */
3353 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
3356 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3364 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3366 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3367 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3370 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3380 }
3398 /* FIXME: */
3404 }
3408 {
3409 /* This opcode takes as input an object reference and a class, and returns:
3410 0) if the object is an instance of the class,
3411 1) if the object is a proxy whose type cannot be determined
3412 an InvalidCastException exception is thrown otherwhise*/
3438 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3450 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3453 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3454 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3457 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3473 }
3481 /* FIXME: */
3487 }
3489 /*
3490 * Returns NULL and set the cfg exception on error.
3491 */
3493 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used)
3494 {
3504 /* Inline the contents of mono_delegate_ctor */
3506 /* Set target field */
3507 /* Optimize away setting of NULL target */
3509 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
3511 /* Set method field */
3513 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
3515 /*
3516 * To avoid looking up the compiled code belonging to the target method
3517 * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
3518 * store it, and we fill it after the method has been compiled.
3519 */
3524 code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
3534 }
3538 }
3539 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
3540 }
3542 /* Set invoke_impl field */
3548 }
3549 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
3551 /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
3554 }
3558 {
3561 /* Need to register the icall so it gets an icall wrapper */
3566 /* mono_array_new_va () needs a vararg calling convention */
3569 /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
3571 }
3573 static void
3575 {
3584 /* Add it to the start of the first bblock */
3588 }
3589 else
3594 /*
3595 * Add a dummy use to keep the got_var alive, since real uses might
3596 * only be generated by the back ends.
3597 * Add it to end_bblock, so the variable's lifetime covers the whole
3598 * method.
3599 * It would be better to make the usage of the got var explicit in all
3600 * cases when the backend needs it (i.e. calls, throw etc.), so this
3601 * wouldn't be needed.
3602 */
3605 }
3610 static gboolean
3612 {
3613 MonoMethodHeaderSummary header;
3615 #ifdef MONO_ARCH_SOFT_FLOAT
3618 #endif
3626 #ifdef MONO_ARCH_HAVE_LMF_OPS
3631 #endif
3637 /*runtime, icall and pinvoke are checked by summary call*/
3644 /* also consider num_locals? */
3645 /* Do the size check early to avoid creating vtables */
3649 else
3652 }
3656 /*
3657 * if we can initialize the class of the method right away, we do,
3658 * otherwise we don't allow inlining if the class needs initialization,
3659 * since it would mean inserting a call to mono_runtime_class_init()
3660 * inside the inlined code
3661 */
3665 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
3667 /* No vtable created yet */
3672 /* This makes so that inline cannot trigger */
3673 /* .cctors: too many apps depend on them */
3674 /* running with a specific order... */
3678 }
3681 /* No vtable created yet */
3688 }
3690 /*
3691 * If we're compiling for shared code
3692 * the cctor will need to be run at aot method load time, for example,
3693 * or at the end of the compilation of the inlining method.
3694 */
3695 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
3697 }
3699 /*
3700 * CAS - do not inline methods with declarative security
3701 * Note: this has to be before any possible return TRUE;
3702 */
3706 #ifdef MONO_ARCH_SOFT_FLOAT
3707 /* FIXME: */
3713 #endif
3716 }
3718 static gboolean
3720 {
3731 /* The initialization is already done before the method is called */
3735 }
3739 {
3741 guint32 size;
3751 #if SIZEOF_REGISTER == 8
3752 /* The array reg is 64 bits but the index reg is only 32 */
3754 /* Not needed */
3759 }
3760 #else
3766 }
3767 #endif
3771 #if defined(TARGET_X86) || defined(TARGET_AMD64)
3775 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], G_STRUCT_OFFSET (MonoArray, vector));
3779 }
3780 #endif
3791 }
3793 #ifndef MONO_ARCH_EMULATE_MUL_DIV
3795 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
3796 {
3810 guint32 size;
3818 /* range checking */
3849 }
3850 #endif
3853 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
3854 {
3865 #ifndef MONO_ARCH_EMULATE_MUL_DIV
3866 /* emit_ldelema_2 depends on OP_LMUL */
3869 }
3870 #endif
3877 }
3879 static MonoBreakPolicy
3881 {
3883 }
3887 /**
3888 * mono_set_break_policy:
3889 * policy_callback: the new callback function
3890 *
3891 * Allow embedders to decide wherther to actually obey breakpoint instructions
3892 * (both break IL instructions and Debugger.Break () method calls), for example
3893 * to not allow an app to be aborted by a perfectly valid IL opcode when executing
3894 * untrusted or semi-trusted code.
3895 *
3896 * @policy_callback will be called every time a break point instruction needs to
3897 * be inserted with the method argument being the method that calls Debugger.Break()
3898 * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
3899 * if it wants the breakpoint to not be effective in the given method.
3900 * #MONO_BREAK_POLICY_ALWAYS is the default.
3901 */
3902 void
3904 {
3907 else
3909 }
3911 static gboolean
3923 }
3924 }
3927 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
3928 {
3943 #if SIZEOF_REGISTER == 8
3944 /* The array reg is 64 bits but the index reg is only 32 */
3946 #else
3948 #endif
3951 #if defined(TARGET_X86) || defined(TARGET_AMD64)
3952 EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, G_STRUCT_OFFSET (MonoString, chars));
3954 /* Avoid a warning */
3958 #else
3963 #endif
3968 /* Decompose later to allow more optimizations */
3979 /* The corlib functions check for oob already. */
3982 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, add_reg, G_STRUCT_OFFSET (MonoString, chars), args [2]->dreg);
3990 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
3991 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, G_STRUCT_OFFSET (MonoVTable, type));
3995 #if !defined(MONO_ARCH_EMULATE_MUL_DIV) && !defined(HAVE_MOVING_COLLECTOR)
4005 #endif
4052 }
4054 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
4059 /*
4060 * Pass the argument normally, the LLVM backend will handle the
4061 * calling convention problems.
4062 */
4063 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4069 }
4076 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4082 }
4085 }
4086 #elif defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
4089 /* Avoid infinite recursion */
4102 #endif
4117 #if SIZEOF_REGISTER == 8
4119 /* 64 bit reads are already atomic */
4125 }
4126 #endif
4128 #ifdef MONO_ARCH_HAVE_ATOMIC_ADD
4135 #if SIZEOF_REGISTER == 8
4138 #endif
4152 }
4159 #if SIZEOF_REGISTER == 8
4162 #endif
4176 }
4182 #if SIZEOF_REGISTER == 8
4185 #endif
4195 }
4196 }
4199 #ifdef MONO_ARCH_HAVE_ATOMIC_EXCHANGE
4201 guint32 opcode;
4206 #if SIZEOF_REGISTER == 8
4210 #else
4213 #endif
4214 else
4237 }
4239 #if HAVE_WRITE_BARRIERS
4243 }
4244 #endif
4245 }
4248 #ifdef MONO_ARCH_HAVE_ATOMIC_CAS
4275 /* g_assert_not_reached (); */
4276 }
4277 #if HAVE_WRITE_BARRIERS
4281 }
4282 #endif
4283 }
4293 else
4297 }
4300 #ifdef TARGET_WIN32
4302 #else
4304 #endif
4306 }
4308 /*
4309 * There is general branches code for Min/Max, but it does not work for
4310 * all inputs:
4311 * http://everything2.com/?node_id=1051618
4312 */
4313 }
4315 #ifdef MONO_ARCH_SIMD_INTRINSICS
4320 }
4321 #endif
4324 }
4326 /*
4327 * This entry point could be used later for arbitrary method
4328 * redirection.
4329 */
4333 {
4335 /* managed string allocation support */
4336 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_STRING_ALLOC)) {
4342 #ifndef MONO_CROSS_COMPILE
4344 #endif
4350 }
4351 }
4353 }
4355 static void
4357 {
4362 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
4364 /*
4365 * FIXME: We should use *args++ = sp [0], but that would mean the arg
4366 * would be different than the MonoInst's used to represent arguments, and
4367 * the ldelema implementation can't deal with that.
4368 * Solution: When ldelema is used on an inline argument, create a var for
4369 * it, emit ldelema on that var, and emit the saving code below in
4370 * inline_method () if needed.
4371 */
4374 /* This uses cfg->args [i] which is set by the preceeding line */
4377 sp++;
4378 }
4379 }
4381 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
4382 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
4384 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
4385 static gboolean
4387 {
4396 else
4398 }
4406 //return (strncmp_result <= 0);
4410 }
4411 }
4412 #endif
4414 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
4415 static gboolean
4417 {
4427 }
4428 }
4436 //return (strncmp_result <= 0);
4440 }
4441 }
4442 #endif
4444 static int
4445 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
4447 {
4455 guint prev_real_offset;
4460 guint32 prev_cil_offset_to_bb_len;
4467 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
4470 #endif
4471 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
4474 #endif
4477 printf ("INLINE START %p %s -> %s\n", cmethod, mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
4482 }
4483 /* allocate space to store the return value */
4486 }
4488 /* allocate local variables */
4495 /* allocate start and end blocks */
4496 /* This is needed so if the inline is aborted, we can clean up */
4520 costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, dont_inline, sp, real_offset, *ip == CEE_CALLVIRT);
4540 printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
4544 /* always add some code to avoid block split failures */
4551 /*
4552 * Get rid of the begin and end bblocks if possible to aid local
4553 * optimizations.
4554 */
4557 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
4564 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
4567 }
4570 }
4573 /*
4574 * If the inlined method contains only a throw, then the ret var is not
4575 * set, so set it to a dummy value.
4576 */
4604 }
4605 }
4609 }
4617 /* This gets rid of the newly added bblocks */
4619 }
4621 }
4623 /*
4624 * Some of these comments may well be out-of-date.
4625 * Design decisions: we do a single pass over the IL code (and we do bblock
4626 * splitting/merging in the few cases when it's required: a back jump to an IL
4627 * address that was not already seen as bblock starting point).
4628 * Code is validated as we go (full verification is still better left to metadata/verify.c).
4629 * Complex operations are decomposed in simpler ones right away. We need to let the
4630 * arch-specific code peek and poke inside this process somehow (except when the
4631 * optimizations can take advantage of the full semantic info of coarse opcodes).
4632 * All the opcodes of the form opcode.s are 'normalized' to opcode.
4633 * MonoInst->opcode initially is the IL opcode or some simplification of that
4634 * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
4635 * opcode with value bigger than OP_LAST.
4636 * At this point the IR can be handed over to an interpreter, a dumb code generator
4637 * or to the optimizing code generator that will translate it to SSA form.
4638 *
4639 * Profiling directed optimizations.
4640 * We may compile by default with few or no optimizations and instrument the code
4641 * or the user may indicate what methods to optimize the most either in a config file
4642 * or through repeated runs where the compiler applies offline the optimizations to
4643 * each method and then decides if it was worth it.
4644 */
4646 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
4647 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
4648 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
4649 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
4650 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
4651 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
4652 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
4653 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) {cfg->exception_ptr = klass; goto load_error;}
4655 /* offset from br.s -> br like opcodes */
4656 #define BIG_BRANCH_OFFSET 13
4658 static gboolean
4660 {
4664 }
4666 static int
4667 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
4668 {
4672 guint cli_addr;
4680 UNVERIFIED;
4684 ip++;
4719 guint32 j;
4729 }
4731 }
4738 }
4743 /* Find the start of the bblock containing the throw */
4747 bb_start --;
4748 }
4751 }
4752 }
4754 unverified:
4757 }
4760 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
4761 {
4770 }
4773 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
4774 {
4777 if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
4781 }
4785 {
4790 else
4795 }
4797 /*
4798 * Returns TRUE if the JIT should abort inlining because "callee"
4799 * is influenced by security attributes.
4800 */
4801 static
4803 {
4804 guint32 result;
4808 }
4815 /* Generate code to throw a SecurityException before the actual call/link */
4823 /* don't hide previous results */
4827 }
4830 }
4834 {
4840 }
4843 }
4845 static void
4847 {
4853 }
4855 /*
4856 * Return the original method is a wrapper is specified. We can only access
4857 * the custom attributes from the original method.
4858 */
4861 {
4865 /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
4869 /* in other cases we need to find the original method */
4871 }
4873 static void
4874 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
4876 {
4877 /* there's no restriction to access Transparent or SafeCritical fields, so we only check calls to Critical methods */
4878 if (mono_security_core_clr_class_level (mono_field_get_parent (field)) != MONO_SECURITY_CORE_CLR_CRITICAL)
4881 /* we can't get the coreclr security level on wrappers since they don't have the attributes */
4886 /* caller is Critical! only SafeCritical and Critical callers can access the field, so we throw if caller is Transparent */
4889 }
4891 static void
4892 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
4894 {
4895 /* there's no restriction to call Transparent or SafeCritical code, so we only check calls to Critical methods */
4899 /* we can't get the coreclr security level on wrappers since they don't have the attributes */
4904 /* caller is Critical! only SafeCritical and Critical callers can call it, so we throw if the caller is Transparent */
4907 }
4909 /*
4910 * Check that the IL instructions at ip are the array initialization
4911 * sequence and return the pointer to the data and the size.
4912 */
4914 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
4915 {
4916 /*
4917 * newarr[System.Int32]
4918 * dup
4919 * ldtoken field valuetype ...
4920 * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
4921 */
4926 guint32 rva;
4931 MonoClassField *field = mono_field_from_token (method->klass->image, field_token, &dummy_class, NULL);
4942 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
4949 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
4950 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
4960 #ifdef ARM_FPU_FPA
4962 #endif
4966 #endif
4969 }
4974 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
4979 /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
4980 /* for aot code we do the lookup on load */
4984 /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
4987 }
4989 }
4991 }
4993 static void
4995 {
5001 else
5004 cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
5007 }
5009 static void
5011 {
5015 }
5017 static gboolean
5019 {
5024 else
5027 }
5029 static void
5031 {
5036 /* Optimize reg-reg moves away */
5037 /*
5038 * Can't optimize other opcodes, since sp[0] might point to
5039 * the last ins of a decomposed opcode.
5040 */
5044 }
5045 }
5047 /*
5048 * ldloca inhibits many optimizations so try to get rid of it in common
5049 * cases.
5050 */
5053 {
5063 }
5065 if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
5068 /* From the INITOBJ case */
5080 }
5084 }
5085 load_error:
5087 }
5089 static gboolean
5091 {
5096 }
5098 }
5100 /*
5101 * mono_method_to_ir:
5102 *
5103 * Translate the .net IL into linear IR.
5104 */
5105 int
5106 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
5109 {
5110 MonoError error;
5130 guint num_args;
5133 MonoDeclSecurityActions actions;
5139 /* serialization and xdomain stuff may need access to private fields and methods */
5149 /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
5167 /*
5168 * Methods without init_locals set could cause asserts in various passes
5169 * (#497220).
5170 */
5177 }
5179 /* SkipVerification is not allowed if core-clr is enabled */
5183 }
5203 }
5211 }
5213 cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
5234 /* ENTRY BLOCK */
5240 /* EXIT BLOCK */
5252 }
5253 /* handle exception clauses */
5274 /* todo: is a fault block unsafe to optimize? */
5277 }
5280 /*printf ("clause try IL_%04x to IL_%04x handler %d at IL_%04x to IL_%04x\n", clause->try_offset, clause->try_offset + clause->try_len, clause->flags, clause->handler_offset, clause->handler_offset + clause->handler_len);
5281 while (p < end) {
5282 printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
5283 }*/
5284 /* catch and filter blocks get the exception object on the stack */
5289 /* mostly like handle_stack_args (), but just sets the input args */
5290 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
5295 /*
5296 * Add a dummy use for the exvar so its liveness info will be
5297 * correct.
5298 */
5308 /* The filter block shares the exvar with the handler block */
5312 }
5313 }
5319 /*
5320 * In shared generic code with catch
5321 * clauses containing type variables
5322 * the exception handling code has to
5323 * be able to get to the rgctx.
5324 * Therefore we have to make sure that
5325 * the vtable/mrgctx argument (for
5326 * static or generic methods) or the
5327 * "this" argument (for non-static
5328 * methods) are live.
5329 */
5338 }
5339 }
5340 }
5346 }
5348 /* FIRST CODE BLOCK */
5361 }
5362 }
5368 /* at this point having security doesn't mean we have any code to generate */
5370 /* Only Demand, NonCasDemand and DemandChoice requires code generation.
5371 * And we do not want to enter the next section (with allocation) if we
5372 * have nothing to generate */
5374 }
5376 /* we must Demand SecurityPermission.Unmanaged before P/Invoking */
5383 /* unless the method or it's class has the [SuppressUnmanagedCodeSecurity] attribute */
5386 }
5394 }
5397 }
5399 /* not a P/Invoke after all */
5401 }
5402 }
5404 if ((init_locals || (cfg->method == method && (cfg->opt & MONO_OPT_SHARED))) || cfg->compile_aot || security || pinvoke) {
5405 /* we use a separate basic block for the initialization code */
5418 }
5420 /* at this point we know, if security is TRUE, that some code needs to be generated */
5427 /* Add code for SecurityAction.Demand */
5430 /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
5432 }
5434 /* CLR 1.x uses a .noncasdemand (but 2.x doesn't) */
5435 /* For Mono we re-route non-CAS Demand to Demand (as the managed code must deal with it anyway) */
5438 /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
5440 }
5442 /* New in 2.0, Demand must succeed for one of the permissions (i.e. not all) */
5445 /* Calls static void SecurityManager.InternalDemandChoice (byte* permissions, int size); */
5447 }
5448 }
5450 /* we must Demand SecurityPermission.Unmanaged before p/invoking */
5453 }
5456 /* check if this is native code, e.g. an icall or a p/invoke */
5463 /* if this ia a native call then it can only be JITted from platform code */
5469 }
5470 }
5471 }
5472 }
5473 }
5476 UNVERIFIED;
5480 UNVERIFIED;
5481 }
5488 UNVERIFIED;
5489 }
5492 /* We force the vtable variable here for all shared methods
5493 for the possibility that they might show up in a stack
5494 trace where their exact instantiation is needed. */
5501 /* FIXME: Is there a better way to do this?
5502 We need the variable live for the duration
5503 of the whole method. */
5505 }
5506 }
5508 /* add a check for this != NULL to inlined methods */
5515 }
5522 UNVERIFIED;
5523 }
5525 }
5527 /* we use a spare stack slot in SWITCH and NEWOBJ and others */
5528 stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
5536 else
5548 }
5558 }
5569 }
5578 }
5581 }
5582 }
5600 }
5604 }
5605 }
5606 /*
5607 * Sequence points are points where the debugger can place a breakpoint.
5608 * Currently, we generate these automatically at points where the IL
5609 * stack is empty.
5610 */
5614 }
5622 /* TODO: Use an increment here */
5623 #if defined(TARGET_X86)
5628 #else
5631 #endif
5632 }
5635 printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
5641 else
5643 ip++;
5649 else
5651 ip++;
5662 ip++;
5673 ip++;
5685 UNVERIFIED;
5690 }
5717 UNVERIFIED;
5740 }
5746 }
5753 UNVERIFIED;
5816 #ifdef TARGET_POWERPC
5817 /* FIXME: Clean this up */
5820 #endif
5822 /* FIXME: we should really allocate this only late in the compilation process */
5842 }
5848 }
5853 #ifdef TARGET_POWERPC
5854 /* FIXME: Clean this up */
5857 #endif
5859 /* FIXME: we should really allocate this only late in the compilation process */
5879 }
5885 }
5890 sp--;
5905 }
5908 ip++;
5911 #ifdef TARGET_X86
5913 /* we need to pop the value from the x86 FP stack */
5915 #endif
5920 INLINE_FAILURE;
5924 UNVERIFIED;
5926 /* FIXME: check the signature matches */
5936 CHECK_CFG_EXCEPTION;
5938 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
5939 {
5943 /* Handle tail calls similarly to calls */
5957 }
5958 #else
5960 /* Prevent arguments from being optimized away */
5967 #endif
5972 }
5999 else
6007 /*
6008 * This is a call through a function pointer using a pinvoke
6009 * signature. Have to create a wrapper and call that instead.
6010 * FIXME: This is very slow, need to create a wrapper at JIT time
6011 * instead based on the signature.
6012 */
6017 }
6025 if ((constrained_call->byval_arg.type == MONO_TYPE_VAR || constrained_call->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
6026 /*
6027 * This is needed since get_method_constrained can't find
6028 * the method in klass representing a type var.
6029 * The type var is guaranteed to be a reference type in this
6030 * case.
6031 */
6036 cmethod = mono_get_method_constrained (image, token, constrained_call, generic_context, &cil_method);
6037 }
6041 }
6048 target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
6049 }
6052 METHOD_ACCESS_FAILURE;
6053 }
6059 /* MS.NET seems to silently convert this to a callvirt */
6079 }
6080 }
6088 INLINE_FAILURE;
6089 CHECK_CFG_EXCEPTION;
6090 }
6094 }
6097 UNVERIFIED;
6104 //g_assert (!virtual || fsig->hasthis);
6109 /*
6110 * We have the `constrained.' prefix opcode.
6111 */
6113 /*
6114 * The type parameter is instantiated as a valuetype,
6115 * but that type doesn't override the method we're
6116 * calling, so we need to box `this'.
6117 */
6121 CHECK_CFG_EXCEPTION;
6125 /*
6126 * The type parameter is instantiated as a reference
6127 * type. We have a managed pointer on the stack, so
6128 * we need to dereference it here.
6129 */
6136 }
6139 UNVERIFIED;
6141 /*
6142 * If the callee is a shared method, then its static cctor
6143 * might not get called after the call was patched.
6144 */
6145 if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable_impl (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
6148 }
6156 /*
6157 * Pass vtable iff target method might
6158 * be shared, which means that sharing
6159 * is enabled for its class and its
6160 * context is sharable (and it's not a
6161 * generic method).
6162 */
6166 }
6178 }
6186 /* Generic method interface
6187 calls are resolved via a
6188 helper function and don't
6189 need an imt. */
6192 }
6194 /*
6195 * If a shared method calls another
6196 * shared method then the caller must
6197 * have a generic sharing context
6198 * because the magic trampoline
6199 * requires it. FIXME: We shouldn't
6200 * have to force the vtable/mrgctx
6201 * variable here. Instead there
6202 * should be a flag in the cfg to
6203 * request a generic sharing context.
6204 */
6208 }
6218 }
6219 }
6225 /*
6226 * emit_get_rgctx_method () calls mono_class_vtable () so check
6227 * for type load errors before.
6228 */
6231 }
6240 }
6241 }
6249 }
6254 /* Calling virtual generic methods */
6265 /* Prevent inlining of methods that contain indirect calls */
6266 INLINE_FAILURE;
6268 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK
6269 /* The llvm vcall trampolines doesn't support generic virtual calls yet */
6278 #endif
6279 {
6284 /* FIXME: This should be a managed pointer */
6297 }
6305 }
6307 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6308 supported_tail_call = cmethod && MONO_ARCH_USE_OP_TAIL_CALL (mono_method_signature (method), mono_method_signature (cmethod));
6309 #else
6310 supported_tail_call = cmethod && mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
6311 #endif
6313 /* Tail prefix */
6314 /* FIXME: runtime generic context pointer for jumps? */
6315 /* FIXME: handle this for generic sharing eventually */
6316 if ((ins_flag & MONO_INST_TAILCALL) && !cfg->generic_sharing_context && !vtable_arg && cmethod && (*ip == CEE_CALL) && supported_tail_call) {
6319 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
6320 INLINE_FAILURE;
6322 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6323 /* Handle tail calls similarly to calls */
6325 #else
6331 /*
6332 * We implement tail calls by storing the actual arguments into the
6333 * argument variables, then emitting a CEE_JMP.
6334 */
6336 /* Prevent argument from being register allocated */
6339 }
6340 #endif
6348 /* skip CEE_RET as well */
6352 }
6354 /* Conversion to a JIT intrinsic */
6355 if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
6359 sp++;
6360 }
6365 }
6367 /* Inlining */
6369 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
6377 /* Prevent inlining of methods that call wrappers */
6378 INLINE_FAILURE;
6381 }
6383 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, allways))) {
6389 /* *sp is already set by inline_method */
6390 sp++;
6395 }
6396 }
6400 /* Tail recursion elimination */
6401 if ((cfg->opt & MONO_OPT_TAILC) && *ip == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
6405 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
6406 INLINE_FAILURE;
6408 /* keep it simple */
6412 }
6424 /* skip the CEE_RET, too */
6427 else
6432 }
6433 }
6435 /* Generic sharing */
6436 /* FIXME: only do this for generic methods if
6437 they are not shared! */
6443 INLINE_FAILURE;
6448 /*
6449 * We are compiling a call to a
6450 * generic method from shared code,
6451 * which means that we have to look up
6452 * the method in the rgctx and do an
6453 * indirect call.
6454 */
6455 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
6456 }
6458 /* Indirect calls */
6466 else
6467 /* FIXME: what the hell is this??? */
6471 /* Prevent inlining of methods with indirect calls */
6472 INLINE_FAILURE;
6475 #ifdef MONO_ARCH_RGCTX_REG
6485 #else
6486 NOT_IMPLEMENTED;
6487 #endif
6490 /*
6491 * Instead of emitting an indirect call, emit a direct call
6492 * with the contents of the aotconst as the patch info.
6493 */
6494 ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR, addr->inst_p0, fsig, sp);
6496 } else if (addr->opcode == OP_GOT_ENTRY && addr->inst_right->inst_c1 == MONO_PATCH_INFO_ICALL_ADDR) {
6497 ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR, addr->inst_right->inst_left, fsig, sp);
6501 }
6502 }
6509 }
6511 /* Array methods */
6523 }
6526 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, sp [fsig->param_count]->dreg);
6543 }
6548 }
6558 }
6560 /* Common call */
6561 INLINE_FAILURE;
6566 ins = (MonoInst*)mono_emit_method_call_full (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL, imt_arg);
6568 ins = (MonoInst*)mono_emit_method_call_full (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL, NULL);
6569 }
6577 }
6580 /* return from inlined method */
6581 /*
6582 * If in_count == 0, that means the ret is unreachable due to
6583 * being preceeded by a throw. In that case, inline_method () will
6584 * handle setting the return value
6585 * (test case: test_0_inline_throw ()).
6586 */
6591 //g_assert (returnvar != -1);
6594 }
6600 /*
6601 * Place a seq point here too even through the IL stack is not
6602 * empty, so a step over on
6603 * call <FOO>
6604 * ret
6605 * will work correctly.
6606 */
6609 }
6626 }
6628 #ifdef MONO_ARCH_SOFT_FLOAT
6638 }
6639 #else
6641 #endif
6642 }
6643 }
6644 }
6646 UNVERIFIED;
6648 ip++;
6657 ip++;
6667 }
6685 ip++;
6687 ip++;
6697 ip++;
6708 }
6727 UNVERIFIED;
6728 ip ++;
6732 sp--;
6742 }
6749 #if SIZEOF_REGISTER == 4
6751 /* Convert it to OP_LCOMPARE */
6759 }
6760 #endif
6776 }
6790 ip++;
6808 gboolean use_op_switch;
6816 UNVERIFIED;
6829 }
6832 /*
6833 * Link the current bb with the targets as well, so handle_stack_args
6834 * will set their in_stack correctly.
6835 */
6843 }
6857 #ifdef TARGET_ARM
6858 /* ARM implements SWITCH statements differently */
6859 /* FIXME: Make it use the generic implementation */
6862 #endif
6879 else
6882 #if SIZEOF_REGISTER == 8
6883 /* The upper word might not be zero, and we add it to a 64 bit address later */
6885 #endif
6895 }
6897 /* FIXME: Use load_memindex */
6901 }
6905 }
6930 }
6956 #if HAVE_WRITE_BARRIERS
6957 if (*ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !((sp [1]->opcode == OP_PCONST) && (sp [1]->inst_p0 == 0))) {
6958 /* insert call to write barrier */
6961 }
6962 #endif
6979 /* Use the immediate opcodes if possible */
6988 }
6989 }
6994 ip++;
7019 /* FIXME: Pass opcode to is_inst_imm */
7021 /* Use the immediate opcodes if possible */
7022 if (((sp [1]->opcode == OP_ICONST) || (sp [1]->opcode == OP_I8CONST)) && mono_arch_is_inst_imm (sp [1]->opcode == OP_ICONST ? sp [1]->inst_c0 : sp [1]->inst_l)) {
7029 #if SIZEOF_REGISTER == 8
7031 #else
7034 #endif
7035 }
7036 else
7040 /* Might be followed by an instruction added by ADD_WIDEN_OP */
7043 }
7044 }
7048 ip++;
7065 /* Special case this earlier so we have long constants in the IR */
7070 #if SIZEOF_REGISTER == 8
7073 else
7075 #else
7079 else
7081 #endif
7083 }
7086 }
7087 ip++;
7101 }
7102 ip++;
7114 }
7115 ip++;
7133 ip++;
7143 ip++;
7165 }
7180 /* Optimize the common ldobj+stloc combination */
7195 }
7205 }
7207 /* Optimize the ldobj+stobj combination */
7208 /* The reference case ends up being a load+store anyway */
7209 if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, bblock, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass)) {
7212 sp --;
7219 }
7228 }
7238 }
7250 }
7261 /*
7262 * Avoid relocations in AOT and save some space by using a
7263 * version of helper_ldstr specialized to mscorlib.
7264 */
7268 /* Avoid creating the string object */
7272 }
7273 }
7274 else
7279 }
7286 }
7287 }
7288 }
7290 sp++;
7296 MonoInst this_ins;
7319 INLINE_FAILURE;
7320 CHECK_CFG_EXCEPTION;
7323 }
7342 }
7343 }
7344 }
7349 /*
7350 * Generate smaller code for the common newobj <exception> instruction in
7351 * argument checking code.
7352 */
7379 }
7384 }
7386 /* move the args to allow room for 'this' in the first position */
7390 }
7392 /* check_call_signature () requires sp[0] to be set */
7396 UNVERIFIED;
7406 /* Avoid varargs in the common case */
7413 else
7418 /* we simply pass a null pointer */
7420 /* now call the string ctor */
7432 /*
7433 * The code generated by mini_emit_virtual_call () expects
7434 * iargs [0] to be a boxed instance, but luckily the vcall
7435 * will be transformed into a normal call there.
7436 */
7443 else
7454 /*
7455 * TypeInitializationExceptions thrown from the mono_runtime_class_init
7456 * call in mono_jit_runtime_invoke () can abort the finalizer thread.
7457 * As a workaround, we call class cctors before allocating objects.
7458 */
7459 if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
7460 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
7462 printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
7464 }
7468 }
7474 /* Now call the actual ctor */
7475 /* Avoid virtual calls to ctors if possible */
7485 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, FALSE))) {
7491 INLINE_FAILURE;
7493 }
7504 INLINE_FAILURE;
7507 }
7508 }
7511 /* Valuetype */
7515 }
7516 else
7522 }
7531 UNVERIFIED;
7539 /* obj */
7542 /* klass */
7549 } else if (!context_used && (klass->marshalbyref || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
7568 }
7571 CHECK_CFG_EXCEPTION;
7575 }
7585 UNVERIFIED;
7593 /* obj */
7596 /* klass */
7600 sp++;
7603 } else if (!context_used && (klass->marshalbyref || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
7622 }
7625 CHECK_CFG_EXCEPTION;
7629 }
7631 }
7646 /* CASTCLASS FIXME kill this huge slice of duplicated code*/
7650 /* obj */
7652 /* klass */
7679 CHECK_CFG_EXCEPTION;
7683 }
7685 }
7692 }
7694 /* UNBOX */
7700 /* LDOBJ */
7706 }
7727 }
7730 UNVERIFIED;
7732 UNVERIFIED;
7733 /* frequent check in generic code: box (struct), brtrue */
7735 ip + 5 < end && ip_in_bb (cfg, bblock, ip + 5) && (ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S)) {
7736 /*printf ("box-brtrue opt at 0x%04x in %s\n", real_offset, method->name);*/
7741 ip++;
7743 ip++;
7746 ip++;
7749 }
7754 /*
7755 * This leads to some inconsistency, since the two bblocks are
7756 * not really connected, but it is needed for handling stack
7757 * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
7758 * FIXME: This should only be needed if sp != stack_start, but that
7759 * doesn't work for some reason (test failure in mcs/tests on x86).
7760 */
7766 }
7770 }
7778 else
7784 }
7786 CHECK_CFG_EXCEPTION;
7790 }
7814 }
7818 }
7824 guint foffset;
7832 }
7834 UNVERIFIED;
7836 UNVERIFIED;
7842 }
7845 }
7849 FIELD_ACCESS_FAILURE;
7852 /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
7853 any visible *instance* field (in fact there's a single case for a static field in Marshal) XXX
7854 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
7855 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
7856 */
7861 UNVERIFIED;
7862 if ((klass->marshalbyref && !MONO_CHECK_THIS (sp [0])) || klass->contextbound || klass == mono_defaults.marshalbyrefobject_class) {
7884 }
7892 #if HAVE_WRITE_BARRIERS
7893 if (mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !(sp [1]->opcode == OP_PCONST && sp [1]->inst_c0 == 0)) {
7894 /* insert call to write barrier */
7903 }
7904 #endif
7907 }
7911 }
7913 if ((klass->marshalbyref && !MONO_CHECK_THIS (sp [0])) || klass->contextbound || klass == mono_defaults.marshalbyrefobject_class) {
7914 MonoMethod *wrapper = (*ip == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
7920 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
7935 }
7940 /* Have to compute the address of the variable */
7945 else
7950 }
7968 }
7969 }
7973 }
7979 gboolean is_special_static;
7987 }
7988 else
7994 FIELD_ACCESS_FAILURE;
7996 /* if the class is Critical then transparent code cannot access it's fields */
8000 /*
8001 * We can only support shared generic static
8002 * field access on architectures where the
8003 * trampoline code has been extended to handle
8004 * the generic class init.
8005 */
8006 #ifndef MONO_ARCH_VTABLE_REG
8008 #endif
8015 /* The special_static_fields field is init'd in mono_class_vtable, so it needs
8016 * to be called here.
8017 */
8021 }
8029 /* Generate IR to compute the field address */
8043 }
8048 /*
8049 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
8050 method->klass->name_space, method->klass->name, method->name,
8051 depth, field->offset);
8052 */
8061 // FIXME: This doesn't work since it tries to pass the argument
8062 // in the normal way, instead of using MONO_ARCH_VTABLE_REG
8063 /*
8064 * The vtable pointer is always passed in a register regardless of
8065 * the calling convention, so assign it manually, and make a call
8066 * using a signature without parameters.
8067 */
8068 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline, &vtable);
8069 #ifdef MONO_ARCH_VTABLE_REG
8072 #else
8073 NOT_IMPLEMENTED;
8074 #endif
8075 }
8077 /*
8078 * The pointer we're computing here is
8079 *
8080 * super_info.static_data + field->offset
8081 */
8090 }
8103 if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
8104 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
8106 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
8111 /* This makes so that inline cannot trigger */
8112 /* .cctors: too many apps depend on them */
8113 /* running with a specific order... */
8115 INLINE_FAILURE;
8120 }
8121 }
8122 }
8127 else
8130 /*
8131 * insert call to mono_threads_get_static_data (GPOINTER_TO_UINT (addr))
8132 * This could be later optimized to do just a couple of
8133 * memory dereferences with constant offsets.
8134 */
8138 }
8139 }
8141 /* Generate IR to do the actual load/store operation */
8150 sp--;
8161 }
8168 }
8169 /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
8175 sp++;
8179 sp++;
8184 sp++;
8188 sp++;
8193 sp++;
8197 sp++;
8199 #ifndef HAVE_MOVING_COLLECTOR
8211 sp++;
8213 #endif
8217 sp++;
8225 }
8226 }
8237 }
8238 }
8242 }
8250 /* FIXME: should check item at sp [1] is compatible with the type of the store. */
8257 /*
8258 * Array opcodes
8259 */
8264 guint32 field_token;
8285 }
8290 /* FIXME: we cannot get a managed
8291 allocator because we can't get the
8292 open generic class's vtable. We
8293 have the same problem in
8294 handle_alloc_from_inst(). This
8295 needs to be solved so that we can
8296 have managed allocs of shared
8297 generic classes. */
8298 /*
8299 MonoVTable *array_class_vtable = mono_class_vtable (cfg->domain, array_class);
8300 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class_vtable, 1);
8301 */
8304 /* FIXME: Decompose later to help abcrem */
8306 /* vtable */
8309 /* array len */
8314 else
8318 /* Decompose now to avoid problems with references to the domainvar */
8327 /* Decompose later since it is needed by abcrem */
8342 /* Needed so mono_emit_load_get_addr () gets called */
8344 }
8345 }
8352 /*
8353 * we inline/optimize the initialization sequence if possible.
8354 * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
8355 * for small sizes open code the memcpy
8356 * ensure the rva field is big enough
8357 */
8358 if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, bblock, ip + 6) && (len_ins->opcode == OP_ICONST) && (data_ptr = initialize_array_data (method, cfg->compile_aot, ip, klass, len_ins->inst_c0, &data_size, &field_token))) {
8363 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, G_STRUCT_OFFSET (MonoArray, vector));
8365 EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
8368 }
8372 }
8375 }
8380 UNVERIFIED;
8390 ip ++;
8398 UNVERIFIED;
8404 /* we need to make sure that this array is exactly the type it needs
8405 * to be for correctness. the wrappers are lax with their usage
8406 * so we need to ignore them here
8407 */
8412 }
8442 }
8443 else
8447 UNVERIFIED;
8454 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
8461 }
8465 else
8468 }
8491 }
8492 else
8496 UNVERIFIED;
8498 /* storing a NULL doesn't need any of the complex checks in stelemref */
8505 UNVERIFIED;
8507 UNVERIFIED;
8518 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
8525 }
8526 }
8530 else
8534 }
8549 }
8567 // FIXME:
8570 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
8580 // FIXME:
8585 }
8586 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, value));
8591 }
8606 loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
8614 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
8615 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, G_STRUCT_OFFSET (MonoClass, byval_arg));
8616 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
8622 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
8623 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, G_STRUCT_OFFSET (MonoClass, byval_arg));
8624 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
8626 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
8627 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), klass);
8628 }
8629 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
8637 }
8639 gpointer handle;
8653 }
8656 }
8663 /* This case handles ldtoken
8664 of an open type, like for
8665 typeof(Gen<>). */
8668 /* If we get a MONO_TYPE_CLASS
8669 then we need to provide the
8670 open type, not an
8671 instantiation of it. */
8674 else
8680 else
8682 }
8692 else
8706 }
8727 /* Special case for static synchronized wrappers */
8728 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
8730 /* FIXME: n is not a normal token */
8733 }
8736 }
8739 }
8752 MONO_RGCTX_INFO_TYPE);
8761 }
8766 }
8770 }
8771 }
8776 }
8782 ip++;
8795 ip++;
8798 /*
8799 * Control will leave the method so empty the stack, otherwise
8800 * the next basic block will start with a nonempty stack.
8801 */
8803 sp--;
8804 }
8816 }
8818 /* empty the stack */
8820 sp--;
8821 }
8823 /*
8824 * If this leave statement is in a catch block, check for a
8825 * pending exception, and rethrow it if necessary.
8826 * We avoid doing this in runtime invoke wrappers, since those are called
8827 * by native code which excepts the wrapper to catch all exceptions.
8828 */
8832 /*
8833 * Use <= in the final comparison to handle clauses with multiple
8834 * leave statements, like in bug #78024.
8835 * The ordering of the exception clauses guarantees that we find the
8836 * innermost clause.
8837 */
8838 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && (clause->flags == MONO_EXCEPTION_CLAUSE_NONE) && (ip - header->code + ((*ip == CEE_LEAVE) ? 5 : 2)) <= (clause->handler_offset + clause->handler_len) && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
8842 /*
8843 MonoInst *load;
8845 NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
8846 */
8852 /*
8853 * Currently, we allways rethrow the abort exception, despite the
8854 * fact that this is not correct. See thread6.cs for an example.
8855 * But propagating the abort exception is more important than
8856 * getting the sematics right.
8857 */
8864 }
8865 }
8879 /*
8880 * Link the finally bblock with the target, since it will
8881 * conceptually branch there.
8882 * FIXME: Have to link the bblock containing the endfinally.
8883 */
8886 }
8887 }
8889 }
8900 else
8904 }
8906 /*
8907 * Mono specific opcodes
8908 */
8916 gpointer func;
8935 }
8937 gpointer ptr;
8944 if (cfg->compile_aot && (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) && (strstr (method->name, "__icall_wrapper_") == method->name)) {
8954 /* Will be transformed into an AOTCONST later */
8959 }
8960 }
8961 /* FIXME: Generalize this */
8967 }
8972 /* Can't embed random pointers into AOT code */
8975 }
8978 gpointer ptr;
8992 }
8996 }
9003 // FIXME:
9009 }
9026 }
9039 /*
9040 * Similar to LDOBJ, but instead load the unmanaged
9041 * representation of the vtype to the stack.
9042 */
9051 {
9066 }
9069 /*
9070 * Same as RET, but return the native representation of a vtype
9071 * to the caller.
9072 */
9088 }
9092 UNVERIFIED;
9101 }
9112 else
9118 }
9121 #ifdef MONO_ARCH_HAVE_LMF_OPS
9125 #endif
9155 /* It would be easier to call a trampoline, but that would put an
9156 * extra frame on the stack, confusing exception handling. So
9157 * implement it inline using an opcode for now.
9158 */
9161 cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9162 /* prevent it from being register allocated */
9164 }
9166 /* Has to use a call inst since it local regalloc expects it */
9174 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
9176 #endif
9182 }
9186 }
9188 }
9194 /* somewhat similar to LDTOKEN */
9197 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
9208 }
9216 /*
9217 * The following transforms:
9218 * CEE_CEQ into OP_CEQ
9219 * CEE_CGT into OP_CGT
9220 * CEE_CGT_UN into OP_CGT_UN
9221 * CEE_CLT into OP_CLT
9222 * CEE_CLT_UN into OP_CLT_UN
9223 */
9232 if ((sp [0]->type == STACK_I8) || ((SIZEOF_REGISTER == 8) && ((sp [0]->type == STACK_PTR) || (sp [0]->type == STACK_OBJ) || (sp [0]->type == STACK_MP))))
9236 else
9244 /*
9245 * The backends expect the fceq opcodes to do the
9246 * comparison too.
9247 */
9251 }
9256 }
9260 gboolean needs_static_rgctx_invoke;
9279 METHOD_ACCESS_FAILURE;
9283 INLINE_FAILURE;
9284 CHECK_CFG_EXCEPTION;
9287 }
9289 /*
9290 * Optimize the common case of ldftn+delegate creation
9291 */
9292 #if defined(MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE) && !defined(HAVE_WRITE_BARRIERS)
9293 /* FIXME: SGEN support */
9294 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
9295 MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
9311 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
9313 sp --;
9315 CHECK_CFG_EXCEPTION;
9317 sp ++;
9319 }
9320 }
9321 }
9322 #endif
9331 }
9348 INLINE_FAILURE;
9349 CHECK_CFG_EXCEPTION;
9352 }
9362 else
9368 }
9395 UNVERIFIED;
9419 }
9425 }
9433 UNVERIFIED;
9442 UNVERIFIED;
9444 /*
9445 * Inlining this into a loop in a parent could lead to
9446 * stack overflows which is different behavior than the
9447 * non-inlined case, thus disable inlining in this case.
9448 */
9471 UNVERIFIED;
9483 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
9487 }
9488 }
9491 UNVERIFIED;
9494 }
9497 /* FIXME: record alignment? we can assume 1 for now */
9508 /* Can't inline tail calls at this time */
9521 else
9531 else
9542 if ((ip [1] == CEE_CPBLK) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
9544 } else if ((ip [1] == CEE_INITBLK) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5) && (sp [1]->opcode == OP_ICONST) && (sp [1]->inst_c0 == 0)) {
9545 /* emit_memset only works when val == 0 */
9557 }
9558 }
9562 }
9569 /* we ignore the no-nullcheck for now since we
9570 * really do it explicitly only when doing callvirt->call
9571 */
9580 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
9583 }
9584 }
9599 }
9601 guint32 align;
9607 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !method->klass->image->dynamic) {
9615 }
9620 }
9627 // FIXME:
9630 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
9632 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, type));
9636 }
9647 UNVERIFIED;
9651 UNVERIFIED;
9652 }
9654 }
9657 UNVERIFIED;
9661 UNVERIFIED;
9662 }
9663 }
9665 UNVERIFIED;
9678 }
9682 }
9685 }
9687 #ifdef TARGET_POWERPC
9689 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
9691 #endif
9726 }
9727 }
9728 }
9731 /* Emit initialization for ref vars */
9732 // FIXME: Avoid duplication initialization for IL locals.
9738 }
9739 }
9741 /* Add a sequence point for method entry/exit events */
9747 }
9759 }
9760 }
9768 /* Method is too large */
9774 }
9781 exception_exit:
9788 inline_failure:
9794 load_error:
9801 unverified:
9807 }
9809 static int
9811 {
9825 }
9828 }
9832 int
9834 {
9896 #if defined(TARGET_X86) || defined (TARGET_AMD64)
9901 #endif
9902 #if defined(TARGET_AMD64)
9905 #endif
9916 }
9919 }
9921 static int
9923 {
9949 }
9952 }
9954 static int
9956 {
9975 }
9978 }
9980 int
9982 {
9983 // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
9984 #if defined(TARGET_X86) || defined(TARGET_AMD64)
9996 #if SIZEOF_REGISTER == 8
9999 #endif
10000 }
10001 #endif
10004 }
10008 {
10009 #if defined(TARGET_X86)
10041 }
10042 #endif
10044 #if defined(TARGET_AMD64)
10045 if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
10096 }
10097 #endif
10100 }
10104 {
10105 #if defined(TARGET_X86) || defined(TARGET_AMD64)
10113 }
10114 #endif
10117 }
10121 {
10122 #ifdef TARGET_X86
10123 /* FIXME: This has sign extension issues */
10124 /*
10125 if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
10126 return OP_X86_COMPARE_MEMBASE8_IMM;
10127 */
10129 if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
10141 }
10142 #endif
10144 #ifdef TARGET_AMD64
10145 /* FIXME: This has sign extension issues */
10146 /*
10147 if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
10148 return OP_X86_COMPARE_MEMBASE8_IMM;
10149 */
10156 /* FIXME: This only works for 32 bit immediates
10157 case OP_COMPARE_IMM:
10158 case OP_LCOMPARE_IMM:
10159 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
10160 return OP_AMD64_COMPARE_MEMBASE_IMM;
10161 */
10175 }
10176 #endif
10179 }
10183 {
10184 #ifdef TARGET_X86
10185 if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
10202 }
10203 #endif
10205 #ifdef TARGET_AMD64
10246 }
10247 #endif
10250 }
10252 int
10254 {
10256 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
10260 #endif
10261 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
10266 #endif
10270 }
10271 }
10273 #ifndef DISABLE_JIT
10275 /**
10276 * mono_handle_global_vregs:
10277 *
10278 * Make vregs used in more than one bblock 'global', i.e. allocate a variable
10279 * for them.
10280 */
10281 void
10283 {
10290 #ifdef MONO_ARCH_SIMD_INTRINSICS
10293 #endif
10295 /* Find local vregs used in more than one bb */
10307 gint32 prev_bb;
10337 }
10339 #if SIZEOF_REGISTER == 4
10340 /* In the LLVM case, the long opcodes are not decomposed */
10342 /*
10343 * Since some instructions reference the original long vreg,
10344 * and some reference the two component vregs, it is quite hard
10345 * to determine when it needs to be global. So be conservative.
10346 */
10348 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
10352 }
10354 /*
10355 * Make the component vregs volatile since the optimizations can
10356 * get confused otherwise.
10357 */
10360 }
10361 #endif
10367 /* 0 is a valid block num */
10370 if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
10382 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
10385 mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
10392 }
10393 }
10395 /* Flag as having been used in more than one bb */
10397 }
10398 }
10399 }
10400 }
10402 /* If a variable is used in only one bblock, convert it into a local vreg */
10413 #if SIZEOF_REGISTER == 8
10415 #endif
10416 #if !defined(TARGET_X86) && !defined(MONO_ARCH_SOFT_FLOAT)
10417 /* Enabling this screws up the fp stack on x86 */
10419 #endif
10420 /* Arguments are implicitly global */
10421 /* Putting R4 vars into registers doesn't work currently */
10422 if ((var->opcode != OP_ARG) && (var != cfg->ret) && !(var->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && (vreg_to_bb [var->dreg] != -1) && (var->klass->byval_arg.type != MONO_TYPE_R4) && !cfg->disable_vreg_to_lvreg) {
10423 /*
10424 * Make that the variable's liveness interval doesn't contain a call, since
10425 * that would cause the lvreg to be spilled, making the whole optimization
10426 * useless.
10427 */
10428 /* This is too slow for JIT compilation */
10429 #if 0
10449 }
10450 }
10455 ins_index ++;
10456 }
10460 }
10461 #endif
10467 }
10469 }
10470 }
10472 /*
10473 * Compress the varinfo and vars tables so the liveness computation is faster and
10474 * takes up less space.
10475 */
10487 #if SIZEOF_REGISTER == 4
10489 /* Modify the two component vars too */
10496 }
10497 #endif
10498 }
10499 pos ++;
10500 }
10501 }
10505 }
10507 /**
10508 * mono_spill_global_vars:
10509 *
10510 * Generate spill code for variables which are not allocated to registers,
10511 * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
10512 * code is generated which could be optimized by the local optimization passes.
10513 */
10514 void
10516 {
10532 /* FIXME: Move this function to mini.c */
10536 #ifdef MONO_ARCH_SIMD_INTRINSICS
10538 #endif
10540 #if SIZEOF_REGISTER == 4
10541 /* Create MonoInsts for longs */
10568 }
10571 }
10572 }
10573 }
10574 #endif
10576 /* FIXME: widening and truncation */
10578 /*
10579 * As an optimization, when a variable allocated to the stack is first loaded into
10580 * an lvreg, we will remember the lvreg and use it the next time instead of loading
10581 * the variable again.
10582 */
10588 /*
10589 * These arrays contain the first and last instructions accessing a given
10590 * variable.
10591 * Since we emit bblocks in the same order we process them here, and we
10592 * don't split live ranges, these will precisely describe the live range of
10593 * the variable, i.e. the instruction range where a valid value can be found
10594 * in the variables location.
10595 * The live range is computed using the liveness info computed by the liveness pass.
10596 * We can't use vmv->range, since that is an abstract live range, and we need
10597 * one which is instruction precise.
10598 * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
10599 */
10600 /* FIXME: Only do this if debugging info is requested */
10606 /* Add spill loads/stores */
10613 /* Clear vreg_to_lvreg array */
10631 /*
10632 * We handle LDADDR here as well, since it can only be decomposed
10633 * when variable addresses are known.
10634 */
10639 /* Happens on SPARC/S390 where vtypes are passed by reference */
10644 }
10650 NOT_IMPLEMENTED;
10657 }
10661 }
10666 }
10668 /*
10669 * Store opcodes have destbasereg in the dreg, but in reality, it is an
10670 * src register.
10671 * FIXME:
10672 */
10686 else
10696 }
10698 /***************/
10699 /* DREG */
10700 /***************/
10702 g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
10716 } else if ((ins->dreg == ins->sreg1) && (spec [MONO_INST_DEST] == 'i') && (spec [MONO_INST_SRC1] == 'i') && !vreg_to_lvreg [ins->dreg] && (op_to_op_dest_membase (store_opcode, ins->opcode) != -1)) {
10717 /*
10718 * Instead of emitting a load+store, use a _membase opcode.
10719 */
10729 }
10732 guint32 lvreg;
10738 /* Invalidate any previous lvreg for this vreg */
10746 }
10751 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
10753 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
10756 }
10760 /* Try to fuse the store into the instruction itself */
10761 /* FIXME: Add more instructions */
10762 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
10768 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE))) {
10786 // FIXME: The backends expect the base reg to be in inst_basereg
10793 /* printf ("INS: "); mono_print_ins (ins); */
10794 /* Create a store instruction */
10795 NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
10797 /* Insert it after the instruction */
10802 /*
10803 * We can't assign ins->dreg to var->dreg here, since the
10804 * sregs could use it. So set a flag, and do it after
10805 * the sregs.
10806 */
10807 if ((!MONO_ARCH_USE_FPSTACK || ((store_opcode != OP_STORER8_MEMBASE_REG) && (store_opcode != OP_STORER4_MEMBASE_REG))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)))
10809 }
10810 }
10811 }
10816 }
10817 }
10819 /************/
10820 /* SREGS */
10821 /************/
10832 guint32 load_opcode;
10836 //mono_inst_set_src_registers (ins, sregs);
10840 }
10851 /* The variable is already loaded to an lvreg */
10855 //mono_inst_set_src_registers (ins, sregs);
10857 }
10859 /* Try to fuse the load into the instruction */
10863 //mono_inst_set_src_registers (ins, sregs);
10868 //mono_inst_set_src_registers (ins, sregs);
10875 //printf ("%d ", srcindex); mono_print_ins (ins);
10879 if ((!MONO_ARCH_USE_FPSTACK || ((load_opcode != OP_LOADR8_MEMBASE) && (load_opcode != OP_LOADR4_MEMBASE))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && !no_lvreg) {
10881 /*
10882 * sreg refers to the value loaded by the load
10883 * emitted below, but we need to use ins->dreg
10884 * since it refers to the store emitted earlier.
10885 */
10887 }
10892 }
10893 }
10896 //mono_inst_set_src_registers (ins, sregs);
10899 NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
10901 NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
10904 }
10906 #if SIZEOF_REGISTER == 4
10908 #endif
10912 }
10913 }
10918 }
10919 }
10920 }
10929 }
10935 }
10938 /* Clear vreg_to_lvreg array */
10945 }
10949 }
10951 /* Extend the live range based on the liveness info */
10957 /* The liveness info is incomplete */
10961 /* Live from at least the first ins of this bb */
10964 }
10967 /* Live at least until the last ins of this bb */
10970 }
10971 }
10972 }
10973 }
10975 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
10976 /*
10977 * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
10978 * by storing the current native offset into MonoMethodVar->live_range_start/end.
10979 */
10990 }
10997 else
10999 }
11000 }
11001 }
11002 #endif
11008 }
11010 /**
11011 * FIXME:
11012 * - use 'iadd' instead of 'int_add'
11013 * - handling ovf opcodes: decompose in method_to_ir.
11014 * - unify iregs/fregs
11015 * -> partly done, the missing parts are:
11016 * - a more complete unification would involve unifying the hregs as well, so
11017 * code wouldn't need if (fp) all over the place. but that would mean the hregs
11018 * would no longer map to the machine hregs, so the code generators would need to
11019 * be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
11020 * wouldn't work any more. Duplicating the code in mono_local_regalloc () into
11021 * fp/non-fp branches speeds it up by about 15%.
11022 * - use sext/zext opcodes instead of shifts
11023 * - add OP_ICALL
11024 * - get rid of TEMPLOADs if possible and use vregs instead
11025 * - clean up usage of OP_P/OP_ opcodes
11026 * - cleanup usage of DUMMY_USE
11027 * - cleanup the setting of ins->type for MonoInst's which are pushed on the
11028 * stack
11029 * - set the stack type and allocate a dreg in the EMIT_NEW macros
11030 * - get rid of all the <foo>2 stuff when the new JIT is ready.
11031 * - make sure handle_stack_args () is called before the branch is emitted
11032 * - when the new IR is done, get rid of all unused stuff
11033 * - COMPARE/BEQ as separate instructions or unify them ?
11034 * - keeping them separate allows specialized compare instructions like
11035 * compare_imm, compare_membase
11036 * - most back ends unify fp compare+branch, fp compare+ceq
11037 * - integrate mono_save_args into inline_method
11038 * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
11039 * - handle long shift opts on 32 bit platforms somehow: they require
11040 * 3 sregs (2 for arg1 and 1 for arg2)
11041 * - make byref a 'normal' type.
11042 * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
11043 * variable if needed.
11044 * - do not start a new IL level bblock when cfg->cbb is changed by a function call
11045 * like inline_method.
11046 * - remove inlining restrictions
11047 * - fix LNEG and enable cfold of INEG
11048 * - generalize x86 optimizations like ldelema as a peephole optimization
11049 * - add store_mem_imm for amd64
11050 * - optimize the loading of the interruption flag in the managed->native wrappers
11051 * - avoid special handling of OP_NOP in passes
11052 * - move code inserting instructions into one function/macro.
11053 * - try a coalescing phase after liveness analysis
11054 * - add float -> vreg conversion + local optimizations on !x86
11055 * - figure out how to handle decomposed branches during optimizations, ie.
11056 * compare+branch, op_jump_table+op_br etc.
11057 * - promote RuntimeXHandles to vregs
11058 * - vtype cleanups:
11059 * - add a NEW_VARLOADA_VREG macro
11060 * - the vtype optimizations are blocked by the LDADDR opcodes generated for
11061 * accessing vtype fields.
11062 * - get rid of I8CONST on 64 bit platforms
11063 * - dealing with the increase in code size due to branches created during opcode
11064 * decomposition:
11065 * - use extended basic blocks
11066 * - all parts of the JIT
11067 * - handle_global_vregs () && local regalloc
11068 * - avoid introducing global vregs during decomposition, like 'vtable' in isinst
11069 * - sources of increase in code size:
11070 * - vtypes
11071 * - long compares
11072 * - isinst and castclass
11073 * - lvregs not allocated to global registers even if used multiple times
11074 * - call cctors outside the JIT, to make -v output more readable and JIT timings more
11075 * meaningful.
11076 * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
11077 * - add all micro optimizations from the old JIT
11078 * - put tree optimizations into the deadce pass
11079 * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
11080 * specific function.
11081 * - unify the float comparison opcodes with the other comparison opcodes, i.e.
11082 * fcompare + branchCC.
11083 * - create a helper function for allocating a stack slot, taking into account
11084 * MONO_CFG_HAS_SPILLUP.
11085 * - merge r68207.
11086 * - merge the ia64 switch changes.
11087 * - optimize mono_regstate2_alloc_int/float.
11088 * - fix the pessimistic handling of variables accessed in exception handler blocks.
11089 * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
11090 * parts of the tree could be separated by other instructions, killing the tree
11091 * arguments, or stores killing loads etc. Also, should we fold loads into other
11092 * instructions if the result of the load is used multiple times ?
11093 * - make the REM_IMM optimization in mini-x86.c arch-independent.
11094 * - LAST MERGE: 108395.
11095 * - when returning vtypes in registers, generate IR and append it to the end of the
11096 * last bb instead of doing it in the epilog.
11097 * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
11098 */
11100 /*
11102 NOTES
11103 -----
11105 - When to decompose opcodes:
11106 - earlier: this makes some optimizations hard to implement, since the low level IR
11107 no longer contains the neccessary information. But it is easier to do.
11108 - later: harder to implement, enables more optimizations.
11109 - Branches inside bblocks:
11110 - created when decomposing complex opcodes.
11111 - branches to another bblock: harmless, but not tracked by the branch
11112 optimizations, so need to branch to a label at the start of the bblock.
11113 - branches to inside the same bblock: very problematic, trips up the local
11114 reg allocator. Can be fixed by spitting the current bblock, but that is a
11115 complex operation, since some local vregs can become global vregs etc.
11116 - Local/global vregs:
11117 - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
11118 local register allocator.
11119 - global vregs: used in more than one bblock. Have an associated MonoMethodVar
11120 structure, created by mono_create_var (). Assigned to hregs or the stack by
11121 the global register allocator.
11122 - When to do optimizations like alu->alu_imm:
11123 - earlier -> saves work later on since the IR will be smaller/simpler
11124 - later -> can work on more instructions
11125 - Handling of valuetypes:
11126 - When a vtype is pushed on the stack, a new temporary is created, an
11127 instruction computing its address (LDADDR) is emitted and pushed on
11128 the stack. Need to optimize cases when the vtype is used immediately as in
11129 argument passing, stloc etc.
11130 - Instead of the to_end stuff in the old JIT, simply call the function handling
11131 the values on the stack before emitting the last instruction of the bb.
11132 */