https://bugs.webkit.org/show_bug.cgi?id=77532

Reviewed by Oliver Hunt.
        
Performance neutral on major benchmarks. But it makes calling V8's
Math.random() 4x faster.

* bytecode/CodeBlock.cpp:
(JSC):
(JSC::CodeBlock::addOrFindConstant):
* bytecode/CodeBlock.h:
(JSC::CodeBlock::addConstant):
(CodeBlock):
* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::execute):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::toInt32):
(ByteCodeParser):
(JSC::DFG::ByteCodeParser::getJSConstantForValue):
(JSC::DFG::ByteCodeParser::isInt32Constant):
* dfg/DFGGraph.h:
(JSC::DFG::Graph::addShouldSpeculateInteger):
(Graph):
(JSC::DFG::Graph::addImmediateShouldSpeculateInteger):
* dfg/DFGPropagator.cpp:
(JSC::DFG::Propagator::propagateNodePredictions):
(JSC::DFG::Propagator::doRoundOfDoubleVoting):
(JSC::DFG::Propagator::fixupNode):
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compileAdd):
(DFG):
(JSC::DFG::SpeculativeJIT::compileArithSub):
* dfg/DFGSpeculativeJIT.h:
(JSC::DFG::SpeculativeJIT::valueOfNumberConstantAsInt32):
(SpeculativeJIT):
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* runtime/JSValueInlineMethods.h:
(JSC::JSValue::asDouble):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@106502 268f45cc-cd09-0410-ab3c-d52691b4dbfc