Improved printing of Simulate, LoadNamedFieldPolymorphic, LoadNamedGeneric, and StoreNamedField Hydrogen instructions a bit.
Review URL: http://codereview.chromium.org/8352044

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9725 ce2b1a6d-e550-0410-aec6-3dcde31c8c00