The .cfi (call frame information) directives in llint/LowLevelInterpreter.cpp currently only wrap the LLInt assembly language with .cfi_startproc and .cfi_endproc. The other .cfi unwind directives have been disabled and aren't providing any benefit.
Created attachment 226194 [details] Patch
Comment on attachment 226194 [details] Patch r=me
Committed r165320: <http://trac.webkit.org/changeset/165320>