[JSC] mustHandleValues for dead bytecode locals should be ignored in DFG phases
<rdar://problem/47595961>
Created attachment 363192 [details] Patch
Comment on attachment 363192 [details] Patch Nice. r=me
Committed r242192: <https://trac.webkit.org/changeset/242192>
Committed r242213: <https://trac.webkit.org/changeset/242213>