https://bugs.webkit.org/show_bug.cgi?id=100441

Reviewed by Oliver Hunt and Gavin Barraclough.

Source/JavaScriptCore: 

Made array profiler's to-string helper behave correctly.
        
Made Arrayify elimination do the right thing (convert to GetButterfly).
        
Made CFA's interference analysis track clobbered array modes correctly, mostly by
simplifying the machinery.

* bytecode/ArrayProfile.cpp:
(JSC::arrayModesToString):
* dfg/DFGAbstractState.cpp:
(JSC::DFG::AbstractState::execute):
* dfg/DFGAbstractValue.h:
(JSC::DFG::AbstractValue::clobberArrayModes):
(AbstractValue):
* dfg/DFGConstantFoldingPhase.cpp:
(JSC::DFG::ConstantFoldingPhase::foldConstants):

LayoutTests: 

* fast/js/dfg-arrayify-elimination-expected.txt: Added.
* fast/js/dfg-arrayify-elimination.html: Added.
* fast/js/jsc-test-list:
* fast/js/script-tests/dfg-arrayify-elimination.js: Added.
(foo):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@132554 268f45cc-cd09-0410-ab3c-d52691b4dbfc