Propagate bailout and dont_optimize reasons to cpu-profiler

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1103 matching lines @@
   V(kExpected0AsASmiSentinel, "Expected 0 as a Smi sentinel")                 \
   V(kExpectedAlignmentMarker, "expected alignment marker")                    \
   V(kExpectedPropertyCellInRegisterA2,                                        \
     "Expected property cell in register a2")                                  \
   V(kExpectedPropertyCellInRegisterEbx,                                       \
     "Expected property cell in register ebx")                                 \
   V(kExpectedPropertyCellInRegisterRbx,                                       \
     "Expected property cell in register rbx")                                 \
   V(kExpectingAlignmentForCopyBytes,                                          \
     "Expecting alignment for CopyBytes")                                      \
+  V(kExportDeclaration, "Export declaration")                                 \

[Yang, 2013/09/05 12:19:42]

What do you need this for? Same for the lines below.

[loislo, 2013/09/05 12:44:45]

when v8 parses the js function it may disable optimization for the function
because it found some js statements like try {} catch(e) {}

In that case v8 will never try to optimize it. See the changes in ast.cc.

https://code.google.com/p/chromium/codesearch#chromium/src/v8/src/ast.cc&q=fi...

   V(kExternalStringExpectedButNotFound,                                       \
     "external string expected, but not found")                                \
   V(kFailedBailedOutLastTime, "failed/bailed out last time")                  \
   V(kForInStatementIsNotFastCase, "ForInStatement is not fast case")          \
   V(kForInStatementOptimizationIsDisabled,                                    \
     "ForInStatement optimization is disabled")                                \
   V(kForInStatementWithNonLocalEachVariable,                                  \
     "ForInStatement with non-local each variable")                            \
   V(kForOfStatement, "ForOfStatement")                                        \
   V(kFrameIsExpectedToBeAligned, "frame is expected to be aligned")           \
   V(kFunctionCallsEval, "function calls eval")                                \
   V(kFunctionIsAGenerator, "function is a generator")                         \
   V(kFunctionWithIllegalRedeclaration, "function with illegal redeclaration") \
   V(kGeneratedCodeIsTooLarge, "Generated code is too large")                  \
   V(kGeneratorFailedToResume, "Generator failed to resume")                   \
   V(kGenerator, "generator")                                                  \
   V(kGlobalFunctionsMustHaveInitialMap,                                       \
     "Global functions must have initial map")                                 \
   V(kHeapNumberMapRegisterClobbered, "HeapNumberMap register clobbered")      \
+  V(kImportDeclaration, "Import declaration")                                 \
   V(kImproperObjectOnPrototypeChainForStore,                                  \
     "improper object on prototype chain for store")                           \
   V(kIndexIsNegative, "Index is negative")                                    \
   V(kIndexIsTooLarge, "Index is too large")                                   \
   V(kInlinedRuntimeFunctionClassOf, "inlined runtime function: ClassOf")      \
   V(kInlinedRuntimeFunctionFastAsciiArrayJoin,                                \
     "inlined runtime function: FastAsciiArrayJoin")                           \
   V(kInlinedRuntimeFunctionGeneratorNext,                                     \
     "inlined runtime function: GeneratorNext")                                \
   V(kInlinedRuntimeFunctionGeneratorThrow,                                    \
@@ skipping 36 matching lines @@
   V(kLetBindingReInitialization, "Let binding re-initialization")             \
   V(kLiveBytesCountOverflowChunkSize, "Live Bytes Count overflow chunk size") \
   V(kLiveEditFrameDroppingIsNotSupportedOnArm,                                \
     "LiveEdit frame dropping is not supported on arm")                        \
   V(kLiveEditFrameDroppingIsNotSupportedOnMips,                               \
     "LiveEdit frame dropping is not supported on mips")                       \
   V(kLiveEdit, "LiveEdit")                                                    \
   V(kLookupVariableInCountOperation,                                          \
     "lookup variable in count operation")                                     \
   V(kMapIsNoLongerInEax, "Map is no longer in eax")                           \
+  V(kModuleDeclaration, "Module declaration")                                 \
+  V(kModuleLiteral, "Module literal")                                         \
+  V(kModulePath, "Module path")                                               \
+  V(kModuleStatement, "Module statement")                                     \
+  V(kModuleVariable, "Module variable")                                       \
+  V(kModuleUrl, "Module url")                                                 \
   V(kNoCasesLeft, "no cases left")                                            \
   V(kNoEmptyArraysHereInEmitFastAsciiArrayJoin,                               \
     "No empty arrays here in EmitFastAsciiArrayJoin")                         \
   V(kNonInitializerAssignmentToConst,                                         \
     "non-initializer assignment to const")                                    \
   V(kNonSmiIndex, "Non-smi index")                                            \
   V(kNonSmiKeyInArrayLiteral, "Non-smi key in array literal")                 \
   V(kNonSmiValue, "Non-smi value")                                            \
   V(kNotEnoughVirtualRegistersForValues,                                      \
     "not enough virtual registers for values")                                \
@@ skipping 21 matching lines @@
   V(kPropertyAllocationCountFailed, "Property allocation count failed")       \
   V(kReceivedInvalidReturnAddress, "Received invalid return address")         \
   V(kReferenceToAVariableWhichRequiresDynamicLookup,                          \
     "reference to a variable which requires dynamic lookup")                  \
   V(kReferenceToGlobalLexicalVariable,                                        \
     "reference to global lexical variable")                                   \
   V(kReferenceToUninitializedVariable, "reference to uninitialized variable") \
   V(kRegisterDidNotMatchExpectedRoot, "Register did not match expected root") \
   V(kRegisterWasClobbered, "register was clobbered")                          \
   V(kScopedBlock, "ScopedBlock")                                              \
-  V(kSharedFunctionInfoLiteral, "SharedFunctionInfoLiteral")                  \
+  V(kSharedFunctionInfoLiteral, "Shared function info literal")               \
   V(kSmiAdditionOverflow, "Smi addition overflow")                            \
   V(kSmiSubtractionOverflow, "Smi subtraction overflow")                      \
   V(kStackFrameTypesMustMatch, "stack frame types must match")                \
   V(kSwitchStatementMixedOrNonLiteralSwitchLabels,                            \
     "SwitchStatement: mixed or non-literal switch labels")                    \
   V(kSwitchStatementTooManyClauses, "SwitchStatement: too many clauses")      \
   V(kTheInstructionShouldBeALui, "The instruction should be a lui")           \
   V(kTheInstructionShouldBeAnOri, "The instruction should be an ori")         \
   V(kTheInstructionToPatchShouldBeALoadFromPc,                                \
     "The instruction to patch should be a load from pc")                      \
@@ skipping 65 matching lines @@
   V(kUnsupportedNonPrimitiveCompare, "Unsupported non-primitive compare")     \
   V(kUnsupportedPhiUseOfArguments, "Unsupported phi use of arguments")        \
   V(kUnsupportedPhiUseOfConstVariable,                                        \
     "Unsupported phi use of const variable")                                  \
   V(kUnsupportedTaggedImmediate, "unsupported tagged immediate")              \
   V(kVariableResolvedToWithContext, "Variable resolved to with context")      \
   V(kWeShouldNotHaveAnEmptyLexicalContext,                                    \
     "we should not have an empty lexical context")                            \
   V(kWithStatement, "WithStatement")                                          \
   V(kWrongAddressOrValuePassedToRecordWrite,                                  \
-    "Wrong address or value passed to RecordWrite")
+    "Wrong address or value passed to RecordWrite")                           \
+  V(kYield, "Yield")
 
 
 #define ERROR_MESSAGES_CONSTANTS(C, T) C,
 enum BailoutReason {
   ERROR_MESSAGES_LIST(ERROR_MESSAGES_CONSTANTS)
   kLastErrorMessage
 };
 #undef ERROR_MESSAGES_CONSTANTS
 
 
@@ skipping 5216 matching lines @@
   // deoptimization.
   inline bool has_deoptimization_support();
 
   // Enable deoptimization support through recompiled code.
   void EnableDeoptimizationSupport(Code* recompiled);
 
   // Disable (further) attempted optimization of all functions sharing this
   // shared function info.
   void DisableOptimization(BailoutReason reason);
 
+  inline BailoutReason DisableOptimizationReason();
+
   // Lookup the bailout ID and ASSERT that it exists in the non-optimized
   // code, returns whether it asserted (i.e., always true if assertions are
   // disabled).
   bool VerifyBailoutId(BailoutId id);
 
   // [source code]: Source code for the function.
   bool HasSourceCode();
   Handle<Object> GetSourceCode();
 
   // Number of times the function was optimized.
   inline int opt_count();
   inline void set_opt_count(int opt_count);
 
   // Number of times the function was deoptimized.
   inline void set_deopt_count(int value);
   inline int deopt_count();
   inline void increment_deopt_count();
 
   // Number of time we tried to re-enable optimization after it
   // was disabled due to high number of deoptimizations.
   inline void set_opt_reenable_tries(int value);
   inline int opt_reenable_tries();
 
   inline void TryReenableOptimization();
 
   // Stores deopt_count, opt_reenable_tries and ic_age as bit-fields.
   inline void set_counters(int value);
   inline int counters();
 
+  // Stores opt_count and bailout_reason as bit-fields.
+  inline void set_opt_count_and_bailout_reason(int value);
+  inline int opt_count_and_bailout_reason();
+
+  void set_bailout_reason(BailoutReason reason) {
+    set_opt_count_and_bailout_reason(
+        DisabledOptimizationReasonBits::update(opt_count_and_bailout_reason(),
+                                               reason));
+  }
+
+  void set_dont_optimize_reason(BailoutReason reason) {
+    set_bailout_reason(reason);
+    set_dont_optimize(reason != kNoReason);
+  }
+
   // Source size of this function.
   int SourceSize();
 
   // Calculate the instance size.
   int CalculateInstanceSize();
 
   // Calculate the number of in-object properties.
   int CalculateInObjectProperties();
 
   // Dispatched behavior.
@@ skipping 46 matching lines @@
   static const int kNumLiteralsOffset =
       kExpectedNofPropertiesOffset + kPointerSize;
   static const int kStartPositionAndTypeOffset =
       kNumLiteralsOffset + kPointerSize;
   static const int kEndPositionOffset =
       kStartPositionAndTypeOffset + kPointerSize;
   static const int kFunctionTokenPositionOffset =
       kEndPositionOffset + kPointerSize;
   static const int kCompilerHintsOffset =
       kFunctionTokenPositionOffset + kPointerSize;
-  static const int kOptCountOffset = kCompilerHintsOffset + kPointerSize;
-  static const int kCountersOffset = kOptCountOffset + kPointerSize;
+  static const int kOptCountAndBailoutReasonOffset =
+      kCompilerHintsOffset + kPointerSize;
+  static const int kCountersOffset =
+      kOptCountAndBailoutReasonOffset + kPointerSize;
 
   // Total size.
   static const int kSize = kCountersOffset + kPointerSize;
 #else
   // The only reason to use smi fields instead of int fields
   // is to allow iteration without maps decoding during
   // garbage collections.
   // To avoid wasting space on 64-bit architectures we use
   // the following trick: we group integer fields into pairs
   // First integer in each pair is shifted left by 1.
@@ skipping 13 matching lines @@
   static const int kEndPositionOffset =
       kNumLiteralsOffset + kIntSize;
   static const int kStartPositionAndTypeOffset =
       kEndPositionOffset + kIntSize;
 
   static const int kFunctionTokenPositionOffset =
       kStartPositionAndTypeOffset + kIntSize;
   static const int kCompilerHintsOffset =
       kFunctionTokenPositionOffset + kIntSize;
 
-  static const int kOptCountOffset = kCompilerHintsOffset + kIntSize;
+  static const int kOptCountAndBailoutReasonOffset =
+      kCompilerHintsOffset + kIntSize;
 
-  static const int kCountersOffset = kOptCountOffset + kIntSize;
+  static const int kCountersOffset =
+      kOptCountAndBailoutReasonOffset + kIntSize;
 
   // Total size.
   static const int kSize = kCountersOffset + kIntSize;
 
 #endif
 
   // The construction counter for inobject slack tracking is stored in the
   // most significant byte of compiler_hints which is otherwise unused.
   // Its offset depends on the endian-ness of the architecture.
 #if __BYTE_ORDER == __LITTLE_ENDIAN
@@ skipping 38 matching lines @@
     kDontCache,
     kDontFlush,
     kIsGenerator,
     kCompilerHintsCount  // Pseudo entry
   };
 
   class DeoptCountBits: public BitField<int, 0, 4> {};
   class OptReenableTriesBits: public BitField<int, 4, 18> {};
   class ICAgeBits: public BitField<int, 22, 8> {};
 
+  class OptCountBits: public BitField<int, 0, 22> {};
+  class DisabledOptimizationReasonBits: public BitField<int, 22, 8> {};
+
  private:
 #if V8_HOST_ARCH_32_BIT
   // On 32 bit platforms, compiler hints is a smi.
   static const int kCompilerHintsSmiTagSize = kSmiTagSize;
   static const int kCompilerHintsSize = kPointerSize;
 #else
   // On 64 bit platforms, compiler hints is not a smi, see comment above.
   static const int kCompilerHintsSmiTagSize = 0;
   static const int kCompilerHintsSize = kIntSize;
 #endif
@@ skipping 3413 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_