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      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 #ifndef ART_COMPILER_OPTIMIZING_OPTIMIZING_COMPILER_STATS_H_
     18 #define ART_COMPILER_OPTIMIZING_OPTIMIZING_COMPILER_STATS_H_
     19 
     20 #include <iomanip>
     21 #include <string>
     22 #include <type_traits>
     23 
     24 #include "atomic.h"
     25 
     26 namespace art {
     27 
     28 enum MethodCompilationStat {
     29   kAttemptCompilation = 0,
     30   kCompiled,
     31   kInlinedInvoke,
     32   kReplacedInvokeWithSimplePattern,
     33   kInstructionSimplifications,
     34   kInstructionSimplificationsArch,
     35   kUnresolvedMethod,
     36   kUnresolvedField,
     37   kUnresolvedFieldNotAFastAccess,
     38   kRemovedCheckedCast,
     39   kRemovedDeadInstruction,
     40   kRemovedNullCheck,
     41   kNotCompiledSkipped,
     42   kNotCompiledInvalidBytecode,
     43   kNotCompiledThrowCatchLoop,
     44   kNotCompiledAmbiguousArrayOp,
     45   kNotCompiledHugeMethod,
     46   kNotCompiledLargeMethodNoBranches,
     47   kNotCompiledMalformedOpcode,
     48   kNotCompiledNoCodegen,
     49   kNotCompiledPathological,
     50   kNotCompiledSpaceFilter,
     51   kNotCompiledUnhandledInstruction,
     52   kNotCompiledUnsupportedIsa,
     53   kNotCompiledVerificationError,
     54   kNotCompiledVerifyAtRuntime,
     55   kInlinedMonomorphicCall,
     56   kInlinedPolymorphicCall,
     57   kMonomorphicCall,
     58   kPolymorphicCall,
     59   kMegamorphicCall,
     60   kBooleanSimplified,
     61   kIntrinsicRecognized,
     62   kLoopInvariantMoved,
     63   kSelectGenerated,
     64   kRemovedInstanceOf,
     65   kInlinedInvokeVirtualOrInterface,
     66   kImplicitNullCheckGenerated,
     67   kExplicitNullCheckGenerated,
     68   kLastStat
     69 };
     70 
     71 class OptimizingCompilerStats {
     72  public:
     73   OptimizingCompilerStats() {}
     74 
     75   void RecordStat(MethodCompilationStat stat, size_t count = 1) {
     76     compile_stats_[stat] += count;
     77   }
     78 
     79   void Log() const {
     80     if (!kIsDebugBuild && !VLOG_IS_ON(compiler)) {
     81       // Log only in debug builds or if the compiler is verbose.
     82       return;
     83     }
     84 
     85     if (compile_stats_[kAttemptCompilation] == 0) {
     86       LOG(INFO) << "Did not compile any method.";
     87     } else {
     88       float compiled_percent =
     89           compile_stats_[kCompiled] * 100.0f / compile_stats_[kAttemptCompilation];
     90       LOG(INFO) << "Attempted compilation of " << compile_stats_[kAttemptCompilation]
     91           << " methods: " << std::fixed << std::setprecision(2)
     92           << compiled_percent << "% (" << compile_stats_[kCompiled] << ") compiled.";
     93 
     94       for (int i = 0; i < kLastStat; i++) {
     95         if (compile_stats_[i] != 0) {
     96           LOG(INFO) << PrintMethodCompilationStat(static_cast<MethodCompilationStat>(i)) << ": "
     97               << compile_stats_[i];
     98         }
     99       }
    100     }
    101   }
    102 
    103  private:
    104   std::string PrintMethodCompilationStat(MethodCompilationStat stat) const {
    105     std::string name;
    106     switch (stat) {
    107       case kAttemptCompilation : name = "AttemptCompilation"; break;
    108       case kCompiled : name = "Compiled"; break;
    109       case kInlinedInvoke : name = "InlinedInvoke"; break;
    110       case kReplacedInvokeWithSimplePattern: name = "ReplacedInvokeWithSimplePattern"; break;
    111       case kInstructionSimplifications: name = "InstructionSimplifications"; break;
    112       case kInstructionSimplificationsArch: name = "InstructionSimplificationsArch"; break;
    113       case kUnresolvedMethod : name = "UnresolvedMethod"; break;
    114       case kUnresolvedField : name = "UnresolvedField"; break;
    115       case kUnresolvedFieldNotAFastAccess : name = "UnresolvedFieldNotAFastAccess"; break;
    116       case kRemovedCheckedCast: name = "RemovedCheckedCast"; break;
    117       case kRemovedDeadInstruction: name = "RemovedDeadInstruction"; break;
    118       case kRemovedNullCheck: name = "RemovedNullCheck"; break;
    119       case kNotCompiledSkipped: name = "NotCompiledSkipped"; break;
    120       case kNotCompiledInvalidBytecode: name = "NotCompiledInvalidBytecode"; break;
    121       case kNotCompiledThrowCatchLoop : name = "NotCompiledThrowCatchLoop"; break;
    122       case kNotCompiledAmbiguousArrayOp : name = "NotCompiledAmbiguousArrayOp"; break;
    123       case kNotCompiledHugeMethod : name = "NotCompiledHugeMethod"; break;
    124       case kNotCompiledLargeMethodNoBranches : name = "NotCompiledLargeMethodNoBranches"; break;
    125       case kNotCompiledMalformedOpcode : name = "NotCompiledMalformedOpcode"; break;
    126       case kNotCompiledNoCodegen : name = "NotCompiledNoCodegen"; break;
    127       case kNotCompiledPathological : name = "NotCompiledPathological"; break;
    128       case kNotCompiledSpaceFilter : name = "NotCompiledSpaceFilter"; break;
    129       case kNotCompiledUnhandledInstruction : name = "NotCompiledUnhandledInstruction"; break;
    130       case kNotCompiledUnsupportedIsa : name = "NotCompiledUnsupportedIsa"; break;
    131       case kNotCompiledVerificationError : name = "NotCompiledVerificationError"; break;
    132       case kNotCompiledVerifyAtRuntime : name = "NotCompiledVerifyAtRuntime"; break;
    133       case kInlinedMonomorphicCall: name = "InlinedMonomorphicCall"; break;
    134       case kInlinedPolymorphicCall: name = "InlinedPolymorphicCall"; break;
    135       case kMonomorphicCall: name = "MonomorphicCall"; break;
    136       case kPolymorphicCall: name = "PolymorphicCall"; break;
    137       case kMegamorphicCall: name = "MegamorphicCall"; break;
    138       case kBooleanSimplified : name = "BooleanSimplified"; break;
    139       case kIntrinsicRecognized : name = "IntrinsicRecognized"; break;
    140       case kLoopInvariantMoved : name = "LoopInvariantMoved"; break;
    141       case kSelectGenerated : name = "SelectGenerated"; break;
    142       case kRemovedInstanceOf: name = "RemovedInstanceOf"; break;
    143       case kInlinedInvokeVirtualOrInterface: name = "InlinedInvokeVirtualOrInterface"; break;
    144       case kImplicitNullCheckGenerated: name = "ImplicitNullCheckGenerated"; break;
    145       case kExplicitNullCheckGenerated: name = "ExplicitNullCheckGenerated"; break;
    146 
    147       case kLastStat:
    148         LOG(FATAL) << "invalid stat "
    149             << static_cast<std::underlying_type<MethodCompilationStat>::type>(stat);
    150         UNREACHABLE();
    151     }
    152     return "OptStat#" + name;
    153   }
    154 
    155   AtomicInteger compile_stats_[kLastStat];
    156 
    157   DISALLOW_COPY_AND_ASSIGN(OptimizingCompilerStats);
    158 };
    159 
    160 }  // namespace art
    161 
    162 #endif  // ART_COMPILER_OPTIMIZING_OPTIMIZING_COMPILER_STATS_H_
    163