Currently it's only inlined in the baseline JIT, which is unfortunate.
Created attachment 168488 [details] the patch
Landed in http://trac.webkit.org/changeset/131249
(In reply to comment #2) > Landed in http://trac.webkit.org/changeset/131249 It broke the 32 bit builds: /ramdisk/qt-linux-release/build/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp: In member function 'void JSC::DFG::SpeculativeJIT::compile(JSC::DFG::Node&)': /ramdisk/qt-linux-release/build/Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp:3628: error: no matching function for call to 'JSC::DFG::SpeculativeJIT::emitAllocateBasicJSObject(JSC::AbstractMacroAssembler<JSC::X86Assembler>::TrustedImmPtr, JSC::DFG::GPRReg&, JSC::DFG::GPRReg&, JSC::DFG::GPRReg&, JSC::AbstractMacroAssembler<JSC::X86Assembler>::JumpList&)'[0m
Fix landed in http://trac.webkit.org/changeset/131251