diff options
| author | Simon Hausmann <simon.hausmann@digia.com> | 2012-11-22 09:09:45 +0100 |
|---|---|---|
| committer | Simon Hausmann <simon.hausmann@digia.com> | 2012-11-22 09:10:13 +0100 |
| commit | 470286ecfe79d59df14944e5b5d34630fc739391 (patch) | |
| tree | 43983212872e06cebefd2ae474418fa2908ca54c /Source/JavaScriptCore/bytecode/ArrayProfile.h | |
| parent | 23037105e948c2065da5a937d3a2396b0ff45c1e (diff) | |
Imported WebKit commit e89504fa9195b2063b2530961d4b73dd08de3242 (http://svn.webkit.org/repository/webkit/trunk@135485)
Change-Id: I03774e5ac79721c13ffa30d152537a74d0b12e66
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Diffstat (limited to 'Source/JavaScriptCore/bytecode/ArrayProfile.h')
| -rw-r--r-- | Source/JavaScriptCore/bytecode/ArrayProfile.h | 48 |
1 files changed, 42 insertions, 6 deletions
diff --git a/Source/JavaScriptCore/bytecode/ArrayProfile.h b/Source/JavaScriptCore/bytecode/ArrayProfile.h index 376684fc1..5116cd36f 100644 --- a/Source/JavaScriptCore/bytecode/ArrayProfile.h +++ b/Source/JavaScriptCore/bytecode/ArrayProfile.h @@ -45,15 +45,20 @@ typedef unsigned ArrayModes; #define ALL_NON_ARRAY_ARRAY_MODES \ (asArrayModes(NonArray) \ - | asArrayModes(NonArrayWithContiguous) \ - | asArrayModes(NonArrayWithArrayStorage) \ - | asArrayModes(NonArrayWithSlowPutArrayStorage)) + | asArrayModes(NonArrayWithInt32) \ + | asArrayModes(NonArrayWithDouble) \ + | asArrayModes(NonArrayWithContiguous) \ + | asArrayModes(NonArrayWithArrayStorage) \ + | asArrayModes(NonArrayWithSlowPutArrayStorage)) #define ALL_ARRAY_ARRAY_MODES \ (asArrayModes(ArrayClass) \ - | asArrayModes(ArrayWithContiguous) \ - | asArrayModes(ArrayWithArrayStorage) \ - | asArrayModes(ArrayWithSlowPutArrayStorage)) + | asArrayModes(ArrayWithUndecided) \ + | asArrayModes(ArrayWithInt32) \ + | asArrayModes(ArrayWithDouble) \ + | asArrayModes(ArrayWithContiguous) \ + | asArrayModes(ArrayWithArrayStorage) \ + | asArrayModes(ArrayWithSlowPutArrayStorage)) #define ALL_ARRAY_MODES (ALL_NON_ARRAY_ARRAY_MODES | ALL_ARRAY_ARRAY_MODES) @@ -79,6 +84,36 @@ inline bool arrayModesAlreadyChecked(ArrayModes proven, ArrayModes expected) return (expected | proven) == expected; } +inline bool arrayModesInclude(ArrayModes arrayModes, IndexingType shape) +{ + return !!(arrayModes & (asArrayModes(NonArray | shape) | asArrayModes(ArrayClass | shape))); +} + +inline bool shouldUseSlowPutArrayStorage(ArrayModes arrayModes) +{ + return arrayModesInclude(arrayModes, SlowPutArrayStorageShape); +} + +inline bool shouldUseFastArrayStorage(ArrayModes arrayModes) +{ + return arrayModesInclude(arrayModes, ArrayStorageShape); +} + +inline bool shouldUseContiguous(ArrayModes arrayModes) +{ + return arrayModesInclude(arrayModes, ContiguousShape); +} + +inline bool shouldUseDouble(ArrayModes arrayModes) +{ + return arrayModesInclude(arrayModes, DoubleShape); +} + +inline bool shouldUseInt32(ArrayModes arrayModes) +{ + return arrayModesInclude(arrayModes, Int32Shape); +} + class ArrayProfile { public: ArrayProfile() @@ -128,6 +163,7 @@ public: return !structureIsPolymorphic() && m_expectedStructure; } ArrayModes observedArrayModes() const { return m_observedArrayModes; } + ArrayModes updatedObservedArrayModes() const; // Computes the observed array modes without updating the profile. bool mayInterceptIndexedAccesses() const { return m_mayInterceptIndexedAccesses; } bool mayStoreToHole() const { return m_mayStoreToHole; } |