Changeset 97876 in webkit for trunk/Source/JavaScriptCore/wtf/ByteArray.h

Timestamp:

Oct 19, 2011, 2:25:10 PM (14 years ago)

Author:

[email protected]

Message:

Support CanvasPixelArray in the DFG
​https://bugs.webkit.org/show_bug.cgi?id=70384

Reviewed by Filip Pizlo.

Source/JavaScriptCore:

Add support for the old CanvasPixelArray optimisations to the
DFG. This removes the regression seen in the DFG when using
a CPA.

• assembler/MacroAssemblerX86Common.h:

(JSC::MacroAssemblerX86Common::store8):
(JSC::MacroAssemblerX86Common::truncateDoubleToInt32):

• assembler/X86Assembler.h:

(JSC::X86Assembler::movb_rm):
(JSC::X86Assembler::X86InstructionFormatter::oneByteOp8):

• bytecode/PredictedType.cpp:

(JSC::predictionToString):
(JSC::predictionFromClassInfo):

• bytecode/PredictedType.h:

(JSC::isByteArrayPrediction):

• dfg/DFGAbstractState.cpp:

(JSC::DFG::AbstractState::initialize):
(JSC::DFG::AbstractState::execute):

• dfg/DFGNode.h:

(JSC::DFG::Node::shouldSpeculateByteArray):

• dfg/DFGPropagator.cpp:

(JSC::DFG::Propagator::propagateNodePredictions):
(JSC::DFG::Propagator::fixupNode):
(JSC::DFG::Propagator::performNodeCSE):

• dfg/DFGSpeculativeJIT.cpp:

(JSC::DFG::SpeculativeJIT::checkArgumentTypes):
(JSC::DFG::compileClampDoubleToByte):
(JSC::DFG::SpeculativeJIT::compilePutByValForByteArray):
(JSC::DFG::SpeculativeJIT::compileGetByValOnByteArray):

• dfg/DFGSpeculativeJIT.h:
• dfg/DFGSpeculativeJIT32_64.cpp:

(JSC::DFG::SpeculativeJIT::compile):

• dfg/DFGSpeculativeJIT64.cpp:

(JSC::DFG::SpeculativeJIT::compile):

• runtime/JSByteArray.h:

(JSC::JSByteArray::offsetOfStorage):

• wtf/ByteArray.cpp:
• wtf/ByteArray.h:

(WTF::ByteArray::offsetOfSize):
(WTF::ByteArray::offsetOfData):

Source/WebCore:

Make CanvasPixelArray inherit from ByteArray's ClassInfo so
can identify it more sensibly.

• bindings/js/JSImageDataCustom.cpp:

(WebCore::toJS):

File:

• trunk/Source/JavaScriptCore/wtf/ByteArray.h (modified) (2 diffs)

trunk/Source/JavaScriptCore/wtf/ByteArray.h

@@ -31 +31 @@
 #include <wtf/Platform.h>
 #include <wtf/RefCounted.h>
+#include <wtf/StdLibExtras.h>
 
 namespace WTF {
@@ -85 +86 @@
         static PassRefPtr<ByteArray> create(size_t size);
 
+        static size_t offsetOfSize() { return OBJECT_OFFSETOF(ByteArray, m_size); }
+        static size_t offsetOfData() { return OBJECT_OFFSETOF(ByteArray, m_data); }
+
     private:
         ByteArray(size_t size)