Should support value profiling on CPU(X86)

Should support value profiling on CPU(X86)
https://bugs.webkit.org/show_bug.cgi?id=68575

Reviewed by Sam Weinig.

Fix verbose profiling in ToT (SlowCaseProfile had been
partially renamed to RareCaseProfile), add in-memory
bucket counter for CPU(X86), move JIT::m_canBeOptimized
out of the DFG_JIT ifdef.

* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::resetRareCaseProfiles):
(JSC::CodeBlock::dumpValueProfiles):
* bytecode/CodeBlock.h:
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::makeSafe):
* jit/JIT.cpp:
(JSC::JIT::privateCompileSlowCases):
(JSC::JIT::privateCompile):
* jit/JIT.h:
* jit/JITInlineMethods.h:
(JSC::JIT::emitValueProfilingSite):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@95676 268f45cc-cd09-0410-ab3c-d52691b4dbfc