quick_compiler.cc revision a5ca888d715cd0c6c421313211caa1928be3e399 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "quick_compiler.h"
18
19#include <cstdint>
20
21#include "base/dumpable.h"
22#include "base/logging.h"
23#include "base/macros.h"
24#include "base/timing_logger.h"
25#include "compiler.h"
26#include "dex_file-inl.h"
27#include "dex_file_to_method_inliner_map.h"
28#include "dex/compiler_ir.h"
29#include "dex/dex_flags.h"
30#include "dex/mir_graph.h"
31#include "dex/pass_driver_me_opts.h"
32#include "dex/pass_driver_me_post_opt.h"
33#include "dex/pass_manager.h"
34#include "dex/quick/mir_to_lir.h"
35#include "driver/compiler_driver.h"
36#include "driver/compiler_options.h"
37#include "elf_writer_quick.h"
38#include "jni/quick/jni_compiler.h"
39#include "mir_to_lir.h"
40#include "mirror/art_method-inl.h"
41#include "mirror/object.h"
42#include "runtime.h"
43
44// Specific compiler backends.
45#include "dex/quick/arm/backend_arm.h"
46#include "dex/quick/arm64/backend_arm64.h"
47#include "dex/quick/mips/backend_mips.h"
48#include "dex/quick/x86/backend_x86.h"
49
50namespace art {
51
52static_assert(0U == static_cast<size_t>(kNone),   "kNone not 0");
53static_assert(1U == static_cast<size_t>(kArm),    "kArm not 1");
54static_assert(2U == static_cast<size_t>(kArm64),  "kArm64 not 2");
55static_assert(3U == static_cast<size_t>(kThumb2), "kThumb2 not 3");
56static_assert(4U == static_cast<size_t>(kX86),    "kX86 not 4");
57static_assert(5U == static_cast<size_t>(kX86_64), "kX86_64 not 5");
58static_assert(6U == static_cast<size_t>(kMips),   "kMips not 6");
59static_assert(7U == static_cast<size_t>(kMips64), "kMips64 not 7");
60
61// Additional disabled optimizations (over generally disabled) per instruction set.
62static constexpr uint32_t kDisabledOptimizationsPerISA[] = {
63    // 0 = kNone.
64    ~0U,
65    // 1 = kArm, unused (will use kThumb2).
66    ~0U,
67    // 2 = kArm64.
68    0,
69    // 3 = kThumb2.
70    0,
71    // 4 = kX86.
72    (1 << kLoadStoreElimination) |
73    0,
74    // 5 = kX86_64.
75    (1 << kLoadStoreElimination) |
76    0,
77    // 6 = kMips.
78    (1 << kLoadStoreElimination) |
79    (1 << kLoadHoisting) |
80    (1 << kSuppressLoads) |
81    (1 << kNullCheckElimination) |
82    (1 << kPromoteRegs) |
83    (1 << kTrackLiveTemps) |
84    (1 << kSafeOptimizations) |
85    (1 << kBBOpt) |
86    (1 << kMatch) |
87    (1 << kPromoteCompilerTemps) |
88    0,
89    // 7 = kMips64.
90    ~0U
91};
92static_assert(sizeof(kDisabledOptimizationsPerISA) == 8 * sizeof(uint32_t),
93              "kDisabledOpts unexpected");
94
95// Supported shorty types per instruction set. nullptr means that all are available.
96// Z : boolean
97// B : byte
98// S : short
99// C : char
100// I : int
101// J : long
102// F : float
103// D : double
104// L : reference(object, array)
105// V : void
106static const char* kSupportedTypes[] = {
107    // 0 = kNone.
108    "",
109    // 1 = kArm, unused (will use kThumb2).
110    "",
111    // 2 = kArm64.
112    nullptr,
113    // 3 = kThumb2.
114    nullptr,
115    // 4 = kX86.
116    nullptr,
117    // 5 = kX86_64.
118    nullptr,
119    // 6 = kMips.
120    nullptr,
121    // 7 = kMips64.
122    ""
123};
124static_assert(sizeof(kSupportedTypes) == 8 * sizeof(char*), "kSupportedTypes unexpected");
125
126static int kAllOpcodes[] = {
127    Instruction::NOP,
128    Instruction::MOVE,
129    Instruction::MOVE_FROM16,
130    Instruction::MOVE_16,
131    Instruction::MOVE_WIDE,
132    Instruction::MOVE_WIDE_FROM16,
133    Instruction::MOVE_WIDE_16,
134    Instruction::MOVE_OBJECT,
135    Instruction::MOVE_OBJECT_FROM16,
136    Instruction::MOVE_OBJECT_16,
137    Instruction::MOVE_RESULT,
138    Instruction::MOVE_RESULT_WIDE,
139    Instruction::MOVE_RESULT_OBJECT,
140    Instruction::MOVE_EXCEPTION,
141    Instruction::RETURN_VOID,
142    Instruction::RETURN,
143    Instruction::RETURN_WIDE,
144    Instruction::RETURN_OBJECT,
145    Instruction::CONST_4,
146    Instruction::CONST_16,
147    Instruction::CONST,
148    Instruction::CONST_HIGH16,
149    Instruction::CONST_WIDE_16,
150    Instruction::CONST_WIDE_32,
151    Instruction::CONST_WIDE,
152    Instruction::CONST_WIDE_HIGH16,
153    Instruction::CONST_STRING,
154    Instruction::CONST_STRING_JUMBO,
155    Instruction::CONST_CLASS,
156    Instruction::MONITOR_ENTER,
157    Instruction::MONITOR_EXIT,
158    Instruction::CHECK_CAST,
159    Instruction::INSTANCE_OF,
160    Instruction::ARRAY_LENGTH,
161    Instruction::NEW_INSTANCE,
162    Instruction::NEW_ARRAY,
163    Instruction::FILLED_NEW_ARRAY,
164    Instruction::FILLED_NEW_ARRAY_RANGE,
165    Instruction::FILL_ARRAY_DATA,
166    Instruction::THROW,
167    Instruction::GOTO,
168    Instruction::GOTO_16,
169    Instruction::GOTO_32,
170    Instruction::PACKED_SWITCH,
171    Instruction::SPARSE_SWITCH,
172    Instruction::CMPL_FLOAT,
173    Instruction::CMPG_FLOAT,
174    Instruction::CMPL_DOUBLE,
175    Instruction::CMPG_DOUBLE,
176    Instruction::CMP_LONG,
177    Instruction::IF_EQ,
178    Instruction::IF_NE,
179    Instruction::IF_LT,
180    Instruction::IF_GE,
181    Instruction::IF_GT,
182    Instruction::IF_LE,
183    Instruction::IF_EQZ,
184    Instruction::IF_NEZ,
185    Instruction::IF_LTZ,
186    Instruction::IF_GEZ,
187    Instruction::IF_GTZ,
188    Instruction::IF_LEZ,
189    Instruction::UNUSED_3E,
190    Instruction::UNUSED_3F,
191    Instruction::UNUSED_40,
192    Instruction::UNUSED_41,
193    Instruction::UNUSED_42,
194    Instruction::UNUSED_43,
195    Instruction::AGET,
196    Instruction::AGET_WIDE,
197    Instruction::AGET_OBJECT,
198    Instruction::AGET_BOOLEAN,
199    Instruction::AGET_BYTE,
200    Instruction::AGET_CHAR,
201    Instruction::AGET_SHORT,
202    Instruction::APUT,
203    Instruction::APUT_WIDE,
204    Instruction::APUT_OBJECT,
205    Instruction::APUT_BOOLEAN,
206    Instruction::APUT_BYTE,
207    Instruction::APUT_CHAR,
208    Instruction::APUT_SHORT,
209    Instruction::IGET,
210    Instruction::IGET_WIDE,
211    Instruction::IGET_OBJECT,
212    Instruction::IGET_BOOLEAN,
213    Instruction::IGET_BYTE,
214    Instruction::IGET_CHAR,
215    Instruction::IGET_SHORT,
216    Instruction::IPUT,
217    Instruction::IPUT_WIDE,
218    Instruction::IPUT_OBJECT,
219    Instruction::IPUT_BOOLEAN,
220    Instruction::IPUT_BYTE,
221    Instruction::IPUT_CHAR,
222    Instruction::IPUT_SHORT,
223    Instruction::SGET,
224    Instruction::SGET_WIDE,
225    Instruction::SGET_OBJECT,
226    Instruction::SGET_BOOLEAN,
227    Instruction::SGET_BYTE,
228    Instruction::SGET_CHAR,
229    Instruction::SGET_SHORT,
230    Instruction::SPUT,
231    Instruction::SPUT_WIDE,
232    Instruction::SPUT_OBJECT,
233    Instruction::SPUT_BOOLEAN,
234    Instruction::SPUT_BYTE,
235    Instruction::SPUT_CHAR,
236    Instruction::SPUT_SHORT,
237    Instruction::INVOKE_VIRTUAL,
238    Instruction::INVOKE_SUPER,
239    Instruction::INVOKE_DIRECT,
240    Instruction::INVOKE_STATIC,
241    Instruction::INVOKE_INTERFACE,
242    Instruction::RETURN_VOID_BARRIER,
243    Instruction::INVOKE_VIRTUAL_RANGE,
244    Instruction::INVOKE_SUPER_RANGE,
245    Instruction::INVOKE_DIRECT_RANGE,
246    Instruction::INVOKE_STATIC_RANGE,
247    Instruction::INVOKE_INTERFACE_RANGE,
248    Instruction::UNUSED_79,
249    Instruction::UNUSED_7A,
250    Instruction::NEG_INT,
251    Instruction::NOT_INT,
252    Instruction::NEG_LONG,
253    Instruction::NOT_LONG,
254    Instruction::NEG_FLOAT,
255    Instruction::NEG_DOUBLE,
256    Instruction::INT_TO_LONG,
257    Instruction::INT_TO_FLOAT,
258    Instruction::INT_TO_DOUBLE,
259    Instruction::LONG_TO_INT,
260    Instruction::LONG_TO_FLOAT,
261    Instruction::LONG_TO_DOUBLE,
262    Instruction::FLOAT_TO_INT,
263    Instruction::FLOAT_TO_LONG,
264    Instruction::FLOAT_TO_DOUBLE,
265    Instruction::DOUBLE_TO_INT,
266    Instruction::DOUBLE_TO_LONG,
267    Instruction::DOUBLE_TO_FLOAT,
268    Instruction::INT_TO_BYTE,
269    Instruction::INT_TO_CHAR,
270    Instruction::INT_TO_SHORT,
271    Instruction::ADD_INT,
272    Instruction::SUB_INT,
273    Instruction::MUL_INT,
274    Instruction::DIV_INT,
275    Instruction::REM_INT,
276    Instruction::AND_INT,
277    Instruction::OR_INT,
278    Instruction::XOR_INT,
279    Instruction::SHL_INT,
280    Instruction::SHR_INT,
281    Instruction::USHR_INT,
282    Instruction::ADD_LONG,
283    Instruction::SUB_LONG,
284    Instruction::MUL_LONG,
285    Instruction::DIV_LONG,
286    Instruction::REM_LONG,
287    Instruction::AND_LONG,
288    Instruction::OR_LONG,
289    Instruction::XOR_LONG,
290    Instruction::SHL_LONG,
291    Instruction::SHR_LONG,
292    Instruction::USHR_LONG,
293    Instruction::ADD_FLOAT,
294    Instruction::SUB_FLOAT,
295    Instruction::MUL_FLOAT,
296    Instruction::DIV_FLOAT,
297    Instruction::REM_FLOAT,
298    Instruction::ADD_DOUBLE,
299    Instruction::SUB_DOUBLE,
300    Instruction::MUL_DOUBLE,
301    Instruction::DIV_DOUBLE,
302    Instruction::REM_DOUBLE,
303    Instruction::ADD_INT_2ADDR,
304    Instruction::SUB_INT_2ADDR,
305    Instruction::MUL_INT_2ADDR,
306    Instruction::DIV_INT_2ADDR,
307    Instruction::REM_INT_2ADDR,
308    Instruction::AND_INT_2ADDR,
309    Instruction::OR_INT_2ADDR,
310    Instruction::XOR_INT_2ADDR,
311    Instruction::SHL_INT_2ADDR,
312    Instruction::SHR_INT_2ADDR,
313    Instruction::USHR_INT_2ADDR,
314    Instruction::ADD_LONG_2ADDR,
315    Instruction::SUB_LONG_2ADDR,
316    Instruction::MUL_LONG_2ADDR,
317    Instruction::DIV_LONG_2ADDR,
318    Instruction::REM_LONG_2ADDR,
319    Instruction::AND_LONG_2ADDR,
320    Instruction::OR_LONG_2ADDR,
321    Instruction::XOR_LONG_2ADDR,
322    Instruction::SHL_LONG_2ADDR,
323    Instruction::SHR_LONG_2ADDR,
324    Instruction::USHR_LONG_2ADDR,
325    Instruction::ADD_FLOAT_2ADDR,
326    Instruction::SUB_FLOAT_2ADDR,
327    Instruction::MUL_FLOAT_2ADDR,
328    Instruction::DIV_FLOAT_2ADDR,
329    Instruction::REM_FLOAT_2ADDR,
330    Instruction::ADD_DOUBLE_2ADDR,
331    Instruction::SUB_DOUBLE_2ADDR,
332    Instruction::MUL_DOUBLE_2ADDR,
333    Instruction::DIV_DOUBLE_2ADDR,
334    Instruction::REM_DOUBLE_2ADDR,
335    Instruction::ADD_INT_LIT16,
336    Instruction::RSUB_INT,
337    Instruction::MUL_INT_LIT16,
338    Instruction::DIV_INT_LIT16,
339    Instruction::REM_INT_LIT16,
340    Instruction::AND_INT_LIT16,
341    Instruction::OR_INT_LIT16,
342    Instruction::XOR_INT_LIT16,
343    Instruction::ADD_INT_LIT8,
344    Instruction::RSUB_INT_LIT8,
345    Instruction::MUL_INT_LIT8,
346    Instruction::DIV_INT_LIT8,
347    Instruction::REM_INT_LIT8,
348    Instruction::AND_INT_LIT8,
349    Instruction::OR_INT_LIT8,
350    Instruction::XOR_INT_LIT8,
351    Instruction::SHL_INT_LIT8,
352    Instruction::SHR_INT_LIT8,
353    Instruction::USHR_INT_LIT8,
354    Instruction::IGET_QUICK,
355    Instruction::IGET_WIDE_QUICK,
356    Instruction::IGET_OBJECT_QUICK,
357    Instruction::IPUT_QUICK,
358    Instruction::IPUT_WIDE_QUICK,
359    Instruction::IPUT_OBJECT_QUICK,
360    Instruction::INVOKE_VIRTUAL_QUICK,
361    Instruction::INVOKE_VIRTUAL_RANGE_QUICK,
362    Instruction::IPUT_BOOLEAN_QUICK,
363    Instruction::IPUT_BYTE_QUICK,
364    Instruction::IPUT_CHAR_QUICK,
365    Instruction::IPUT_SHORT_QUICK,
366    Instruction::IGET_BOOLEAN_QUICK,
367    Instruction::IGET_BYTE_QUICK,
368    Instruction::IGET_CHAR_QUICK,
369    Instruction::IGET_SHORT_QUICK,
370    Instruction::UNUSED_F3,
371    Instruction::UNUSED_F4,
372    Instruction::UNUSED_F5,
373    Instruction::UNUSED_F6,
374    Instruction::UNUSED_F7,
375    Instruction::UNUSED_F8,
376    Instruction::UNUSED_F9,
377    Instruction::UNUSED_FA,
378    Instruction::UNUSED_FB,
379    Instruction::UNUSED_FC,
380    Instruction::UNUSED_FD,
381    Instruction::UNUSED_FE,
382    Instruction::UNUSED_FF,
383    // ----- ExtendedMIROpcode -----
384    kMirOpPhi,
385    kMirOpCopy,
386    kMirOpFusedCmplFloat,
387    kMirOpFusedCmpgFloat,
388    kMirOpFusedCmplDouble,
389    kMirOpFusedCmpgDouble,
390    kMirOpFusedCmpLong,
391    kMirOpNop,
392    kMirOpNullCheck,
393    kMirOpRangeCheck,
394    kMirOpDivZeroCheck,
395    kMirOpCheck,
396    kMirOpCheckPart2,
397    kMirOpSelect,
398};
399
400static int kInvokeOpcodes[] = {
401    Instruction::INVOKE_VIRTUAL,
402    Instruction::INVOKE_SUPER,
403    Instruction::INVOKE_DIRECT,
404    Instruction::INVOKE_STATIC,
405    Instruction::INVOKE_INTERFACE,
406    Instruction::INVOKE_VIRTUAL_RANGE,
407    Instruction::INVOKE_SUPER_RANGE,
408    Instruction::INVOKE_DIRECT_RANGE,
409    Instruction::INVOKE_STATIC_RANGE,
410    Instruction::INVOKE_INTERFACE_RANGE,
411    Instruction::INVOKE_VIRTUAL_QUICK,
412    Instruction::INVOKE_VIRTUAL_RANGE_QUICK,
413};
414
415// Unsupported opcodes. nullptr can be used when everything is supported. Size of the lists is
416// recorded below.
417static const int* kUnsupportedOpcodes[] = {
418    // 0 = kNone.
419    kAllOpcodes,
420    // 1 = kArm, unused (will use kThumb2).
421    kAllOpcodes,
422    // 2 = kArm64.
423    nullptr,
424    // 3 = kThumb2.
425    nullptr,
426    // 4 = kX86.
427    nullptr,
428    // 5 = kX86_64.
429    nullptr,
430    // 6 = kMips.
431    nullptr,
432    // 7 = kMips64.
433    kAllOpcodes
434};
435static_assert(sizeof(kUnsupportedOpcodes) == 8 * sizeof(int*), "kUnsupportedOpcodes unexpected");
436
437// Size of the arrays stored above.
438static const size_t kUnsupportedOpcodesSize[] = {
439    // 0 = kNone.
440    arraysize(kAllOpcodes),
441    // 1 = kArm, unused (will use kThumb2).
442    arraysize(kAllOpcodes),
443    // 2 = kArm64.
444    0,
445    // 3 = kThumb2.
446    0,
447    // 4 = kX86.
448    0,
449    // 5 = kX86_64.
450    0,
451    // 6 = kMips.
452    0,
453    // 7 = kMips64.
454    arraysize(kAllOpcodes),
455};
456static_assert(sizeof(kUnsupportedOpcodesSize) == 8 * sizeof(size_t),
457              "kUnsupportedOpcodesSize unexpected");
458
459// The maximum amount of Dalvik register in a method for which we will start compiling. Tries to
460// avoid an abort when we need to manage more SSA registers than we can.
461static constexpr size_t kMaxAllowedDalvikRegisters = INT16_MAX / 2;
462
463static bool CanCompileShorty(const char* shorty, InstructionSet instruction_set) {
464  const char* supported_types = kSupportedTypes[instruction_set];
465  if (supported_types == nullptr) {
466    // Everything available.
467    return true;
468  }
469
470  uint32_t shorty_size = strlen(shorty);
471  CHECK_GE(shorty_size, 1u);
472
473  for (uint32_t i = 0; i < shorty_size; i++) {
474    if (strchr(supported_types, shorty[i]) == nullptr) {
475      return false;
476    }
477  }
478  return true;
479}
480
481// Skip the method that we do not support currently.
482bool QuickCompiler::CanCompileMethod(uint32_t method_idx, const DexFile& dex_file,
483                                     CompilationUnit* cu) const {
484  // This is a limitation in mir_graph. See MirGraph::SetNumSSARegs.
485  if (cu->mir_graph->GetNumOfCodeAndTempVRs() > kMaxAllowedDalvikRegisters) {
486    VLOG(compiler) << "Too many dalvik registers : " << cu->mir_graph->GetNumOfCodeAndTempVRs();
487    return false;
488  }
489
490  // Check whether we do have limitations at all.
491  if (kSupportedTypes[cu->instruction_set] == nullptr &&
492      kUnsupportedOpcodesSize[cu->instruction_set] == 0U) {
493    return true;
494  }
495
496  // Check if we can compile the prototype.
497  const char* shorty = dex_file.GetMethodShorty(dex_file.GetMethodId(method_idx));
498  if (!CanCompileShorty(shorty, cu->instruction_set)) {
499    VLOG(compiler) << "Unsupported shorty : " << shorty;
500    return false;
501  }
502
503  const int *unsupport_list = kUnsupportedOpcodes[cu->instruction_set];
504  int unsupport_list_size = kUnsupportedOpcodesSize[cu->instruction_set];
505
506  for (unsigned int idx = 0; idx < cu->mir_graph->GetNumBlocks(); idx++) {
507    BasicBlock* bb = cu->mir_graph->GetBasicBlock(idx);
508    if (bb == NULL) continue;
509    if (bb->block_type == kDead) continue;
510    for (MIR* mir = bb->first_mir_insn; mir != nullptr; mir = mir->next) {
511      int opcode = mir->dalvikInsn.opcode;
512      // Check if we support the byte code.
513      if (std::find(unsupport_list, unsupport_list + unsupport_list_size, opcode)
514          != unsupport_list + unsupport_list_size) {
515        if (!MIR::DecodedInstruction::IsPseudoMirOp(opcode)) {
516          VLOG(compiler) << "Unsupported dalvik byte code : "
517              << mir->dalvikInsn.opcode;
518        } else {
519          VLOG(compiler) << "Unsupported extended MIR opcode : "
520              << MIRGraph::extended_mir_op_names_[opcode - kMirOpFirst];
521        }
522        return false;
523      }
524      // Check if it invokes a prototype that we cannot support.
525      if (std::find(kInvokeOpcodes, kInvokeOpcodes + arraysize(kInvokeOpcodes), opcode)
526          != kInvokeOpcodes + arraysize(kInvokeOpcodes)) {
527        uint32_t invoke_method_idx = mir->dalvikInsn.vB;
528        const char* invoke_method_shorty = dex_file.GetMethodShorty(
529            dex_file.GetMethodId(invoke_method_idx));
530        if (!CanCompileShorty(invoke_method_shorty, cu->instruction_set)) {
531          VLOG(compiler) << "Unsupported to invoke '"
532              << PrettyMethod(invoke_method_idx, dex_file)
533              << "' with shorty : " << invoke_method_shorty;
534          return false;
535        }
536      }
537    }
538  }
539  return true;
540}
541
542void QuickCompiler::InitCompilationUnit(CompilationUnit& cu) const {
543  // Disable optimizations according to instruction set.
544  cu.disable_opt |= kDisabledOptimizationsPerISA[cu.instruction_set];
545}
546
547void QuickCompiler::Init() {
548  CHECK(GetCompilerDriver()->GetCompilerContext() == nullptr);
549}
550
551void QuickCompiler::UnInit() const {
552  CHECK(GetCompilerDriver()->GetCompilerContext() == nullptr);
553}
554
555/* Default optimizer/debug setting for the compiler. */
556static uint32_t kCompilerOptimizerDisableFlags = 0 |  // Disable specific optimizations
557  // (1 << kLoadStoreElimination) |
558  // (1 << kLoadHoisting) |
559  // (1 << kSuppressLoads) |
560  // (1 << kNullCheckElimination) |
561  // (1 << kClassInitCheckElimination) |
562  // (1 << kGlobalValueNumbering) |
563  (1 << kGvnDeadCodeElimination) |
564  // (1 << kLocalValueNumbering) |
565  // (1 << kPromoteRegs) |
566  // (1 << kTrackLiveTemps) |
567  // (1 << kSafeOptimizations) |
568  // (1 << kBBOpt) |
569  // (1 << kSuspendCheckElimination) |
570  // (1 << kMatch) |
571  // (1 << kPromoteCompilerTemps) |
572  // (1 << kSuppressExceptionEdges) |
573  // (1 << kSuppressMethodInlining) |
574  0;
575
576static uint32_t kCompilerDebugFlags = 0 |     // Enable debug/testing modes
577  // (1 << kDebugDisplayMissingTargets) |
578  // (1 << kDebugVerbose) |
579  // (1 << kDebugDumpCFG) |
580  // (1 << kDebugSlowFieldPath) |
581  // (1 << kDebugSlowInvokePath) |
582  // (1 << kDebugSlowStringPath) |
583  // (1 << kDebugSlowestFieldPath) |
584  // (1 << kDebugSlowestStringPath) |
585  // (1 << kDebugExerciseResolveMethod) |
586  // (1 << kDebugVerifyDataflow) |
587  // (1 << kDebugShowMemoryUsage) |
588  // (1 << kDebugShowNops) |
589  // (1 << kDebugCountOpcodes) |
590  // (1 << kDebugDumpCheckStats) |
591  // (1 << kDebugShowSummaryMemoryUsage) |
592  // (1 << kDebugShowFilterStats) |
593  // (1 << kDebugTimings) |
594  // (1 << kDebugCodegenDump) |
595  0;
596
597CompiledMethod* QuickCompiler::Compile(const DexFile::CodeItem* code_item,
598                                       uint32_t access_flags,
599                                       InvokeType invoke_type,
600                                       uint16_t class_def_idx,
601                                       uint32_t method_idx,
602                                       jobject class_loader,
603                                       const DexFile& dex_file) const {
604  // TODO: check method fingerprint here to determine appropriate backend type.  Until then, use
605  // build default.
606  CompilerDriver* driver = GetCompilerDriver();
607
608  VLOG(compiler) << "Compiling " << PrettyMethod(method_idx, dex_file) << "...";
609  if (Compiler::IsPathologicalCase(*code_item, method_idx, dex_file)) {
610    return nullptr;
611  }
612
613  DCHECK(driver->GetCompilerOptions().IsCompilationEnabled());
614
615  ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
616  InstructionSet instruction_set = driver->GetInstructionSet();
617  if (instruction_set == kArm) {
618    instruction_set = kThumb2;
619  }
620  CompilationUnit cu(driver->GetArenaPool(), instruction_set, driver, class_linker);
621
622  // TODO: Mips64 is not yet implemented.
623  CHECK((cu.instruction_set == kThumb2) ||
624        (cu.instruction_set == kArm64) ||
625        (cu.instruction_set == kX86) ||
626        (cu.instruction_set == kX86_64) ||
627        (cu.instruction_set == kMips));
628
629  // TODO: set this from command line
630  constexpr bool compiler_flip_match = false;
631  const std::string compiler_method_match = "";
632
633  bool use_match = !compiler_method_match.empty();
634  bool match = use_match && (compiler_flip_match ^
635      (PrettyMethod(method_idx, dex_file).find(compiler_method_match) != std::string::npos));
636  if (!use_match || match) {
637    cu.disable_opt = kCompilerOptimizerDisableFlags;
638    cu.enable_debug = kCompilerDebugFlags;
639    cu.verbose = VLOG_IS_ON(compiler) ||
640        (cu.enable_debug & (1 << kDebugVerbose));
641  }
642
643  if (driver->GetCompilerOptions().HasVerboseMethods()) {
644    cu.verbose = driver->GetCompilerOptions().IsVerboseMethod(PrettyMethod(method_idx, dex_file));
645  }
646
647  if (cu.verbose) {
648    cu.enable_debug |= (1 << kDebugCodegenDump);
649  }
650
651  /*
652   * TODO: rework handling of optimization and debug flags.  Should we split out
653   * MIR and backend flags?  Need command-line setting as well.
654   */
655
656  InitCompilationUnit(cu);
657
658  cu.StartTimingSplit("BuildMIRGraph");
659  cu.mir_graph.reset(new MIRGraph(&cu, &cu.arena));
660
661  /*
662   * After creation of the MIR graph, also create the code generator.
663   * The reason we do this is that optimizations on the MIR graph may need to get information
664   * that is only available if a CG exists.
665   */
666  cu.cg.reset(GetCodeGenerator(&cu, nullptr));
667
668  /* Gathering opcode stats? */
669  if (kCompilerDebugFlags & (1 << kDebugCountOpcodes)) {
670    cu.mir_graph->EnableOpcodeCounting();
671  }
672
673  /* Build the raw MIR graph */
674  cu.mir_graph->InlineMethod(code_item, access_flags, invoke_type, class_def_idx, method_idx,
675                             class_loader, dex_file);
676
677  if (!CanCompileMethod(method_idx, dex_file, &cu)) {
678    VLOG(compiler)  << cu.instruction_set << ": Cannot compile method : "
679        << PrettyMethod(method_idx, dex_file);
680    cu.EndTiming();
681    return nullptr;
682  }
683
684  cu.NewTimingSplit("MIROpt:CheckFilters");
685  std::string skip_message;
686  if (cu.mir_graph->SkipCompilation(&skip_message)) {
687    VLOG(compiler) << cu.instruction_set << ": Skipping method : "
688        << PrettyMethod(method_idx, dex_file) << "  Reason = " << skip_message;
689    cu.EndTiming();
690    return nullptr;
691  }
692
693  /* Create the pass driver and launch it */
694  PassDriverMEOpts pass_driver(GetPreOptPassManager(), &cu);
695  pass_driver.Launch();
696
697  /* For non-leaf methods check if we should skip compilation when the profiler is enabled. */
698  if (cu.compiler_driver->ProfilePresent()
699      && !cu.mir_graph->MethodIsLeaf()
700      && cu.mir_graph->SkipCompilationByName(PrettyMethod(method_idx, dex_file))) {
701    cu.EndTiming();
702    return nullptr;
703  }
704
705  if (cu.enable_debug & (1 << kDebugDumpCheckStats)) {
706    cu.mir_graph->DumpCheckStats();
707  }
708
709  if (kCompilerDebugFlags & (1 << kDebugCountOpcodes)) {
710    cu.mir_graph->ShowOpcodeStats();
711  }
712
713  /* Reassociate sreg names with original Dalvik vreg names. */
714  cu.mir_graph->RemapRegLocations();
715
716  /* Free Arenas from the cu.arena_stack for reuse by the cu.arena in the codegen. */
717  if (cu.enable_debug & (1 << kDebugShowMemoryUsage)) {
718    if (cu.arena_stack.PeakBytesAllocated() > 1 * 1024 * 1024) {
719      MemStats stack_stats(cu.arena_stack.GetPeakStats());
720      LOG(INFO) << PrettyMethod(method_idx, dex_file) << " " << Dumpable<MemStats>(stack_stats);
721    }
722  }
723  cu.arena_stack.Reset();
724
725  CompiledMethod* result = nullptr;
726
727  if (cu.mir_graph->PuntToInterpreter()) {
728    VLOG(compiler) << cu.instruction_set << ": Punted method to interpreter: "
729        << PrettyMethod(method_idx, dex_file);
730    cu.EndTiming();
731    return nullptr;
732  }
733
734  cu.cg->Materialize();
735
736  cu.NewTimingSplit("Dedupe");  /* deduping takes up the vast majority of time in GetCompiledMethod(). */
737  result = cu.cg->GetCompiledMethod();
738  cu.NewTimingSplit("Cleanup");
739
740  if (result) {
741    VLOG(compiler) << cu.instruction_set << ": Compiled " << PrettyMethod(method_idx, dex_file);
742  } else {
743    VLOG(compiler) << cu.instruction_set << ": Deferred " << PrettyMethod(method_idx, dex_file);
744  }
745
746  if (cu.enable_debug & (1 << kDebugShowMemoryUsage)) {
747    if (cu.arena.BytesAllocated() > (1 * 1024 *1024)) {
748      MemStats mem_stats(cu.arena.GetMemStats());
749      LOG(INFO) << PrettyMethod(method_idx, dex_file) << " " << Dumpable<MemStats>(mem_stats);
750    }
751  }
752
753  if (cu.enable_debug & (1 << kDebugShowSummaryMemoryUsage)) {
754    LOG(INFO) << "MEMINFO " << cu.arena.BytesAllocated() << " " << cu.mir_graph->GetNumBlocks()
755                    << " " << PrettyMethod(method_idx, dex_file);
756  }
757
758  cu.EndTiming();
759  driver->GetTimingsLogger()->AddLogger(cu.timings);
760  return result;
761}
762
763CompiledMethod* QuickCompiler::JniCompile(uint32_t access_flags,
764                                          uint32_t method_idx,
765                                          const DexFile& dex_file) const {
766  return ArtQuickJniCompileMethod(GetCompilerDriver(), access_flags, method_idx, dex_file);
767}
768
769uintptr_t QuickCompiler::GetEntryPointOf(mirror::ArtMethod* method) const {
770  return reinterpret_cast<uintptr_t>(method->GetEntryPointFromQuickCompiledCodePtrSize(
771      InstructionSetPointerSize(GetCompilerDriver()->GetInstructionSet())));
772}
773
774bool QuickCompiler::WriteElf(art::File* file,
775                             OatWriter* oat_writer,
776                             const std::vector<const art::DexFile*>& dex_files,
777                             const std::string& android_root,
778                             bool is_host) const {
779  return art::ElfWriterQuick32::Create(file, oat_writer, dex_files, android_root, is_host,
780                                       *GetCompilerDriver());
781}
782
783Mir2Lir* QuickCompiler::GetCodeGenerator(CompilationUnit* cu, void* compilation_unit) const {
784  UNUSED(compilation_unit);
785  Mir2Lir* mir_to_lir = nullptr;
786  switch (cu->instruction_set) {
787    case kThumb2:
788      mir_to_lir = ArmCodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
789      break;
790    case kArm64:
791      mir_to_lir = Arm64CodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
792      break;
793    case kMips:
794      mir_to_lir = MipsCodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
795      break;
796    case kX86:
797      // Fall-through.
798    case kX86_64:
799      mir_to_lir = X86CodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
800      break;
801    default:
802      LOG(FATAL) << "Unexpected instruction set: " << cu->instruction_set;
803  }
804
805  /* The number of compiler temporaries depends on backend so set it up now if possible */
806  if (mir_to_lir) {
807    size_t max_temps = mir_to_lir->GetMaxPossibleCompilerTemps();
808    bool set_max = cu->mir_graph->SetMaxAvailableNonSpecialCompilerTemps(max_temps);
809    CHECK(set_max);
810  }
811  return mir_to_lir;
812}
813
814QuickCompiler::QuickCompiler(CompilerDriver* driver) : Compiler(driver, 100) {
815  const auto& compiler_options = driver->GetCompilerOptions();
816  auto* pass_manager_options = compiler_options.GetPassManagerOptions();
817  pre_opt_pass_manager_.reset(new PassManager(*pass_manager_options));
818  CHECK(pre_opt_pass_manager_.get() != nullptr);
819  PassDriverMEOpts::SetupPasses(pre_opt_pass_manager_.get());
820  pre_opt_pass_manager_->CreateDefaultPassList();
821  if (pass_manager_options->GetPrintPassOptions()) {
822    PassDriverMEOpts::PrintPassOptions(pre_opt_pass_manager_.get());
823  }
824  // TODO: Different options for pre vs post opts?
825  post_opt_pass_manager_.reset(new PassManager(PassManagerOptions()));
826  CHECK(post_opt_pass_manager_.get() != nullptr);
827  PassDriverMEPostOpt::SetupPasses(post_opt_pass_manager_.get());
828  post_opt_pass_manager_->CreateDefaultPassList();
829  if (pass_manager_options->GetPrintPassOptions()) {
830    PassDriverMEPostOpt::PrintPassOptions(post_opt_pass_manager_.get());
831  }
832}
833
834QuickCompiler::~QuickCompiler() {
835}
836
837Compiler* CreateQuickCompiler(CompilerDriver* driver) {
838  return QuickCompiler::Create(driver);
839}
840
841Compiler* QuickCompiler::Create(CompilerDriver* driver) {
842  return new QuickCompiler(driver);
843}
844
845}  // namespace art
846