7f43cf0539
Before, we conservatively marked every variable in a scope as used if the scope contained 'with'. Instead, just mark the variables occurring in the body of the with. This avoids marking 'arguments' as used whenever 'with' occurs, which incurs an extra performance penalty (a use of arguments is seen as an instruction to redirect all parameter accesses to the arguments object). Review URL: http://codereview.chromium.org/6357007 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6415 ce2b1a6d-e550-0410-aec6-3dcde31c8c00 |
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