send-ish instructions reload locals from the VM stack when they have a blockiseq. The reload uses cfp->ep to load stack values, but it could use SP register, which should be faster than loading cfp->ep from memory, when efp->ep is equal to SP - 1. It needs to accompany a PatchPoint Invariant::NoEPEscape.
send-ish instructions reload locals from the VM stack when they have a blockiseq. The reload uses
cfp->epto load stack values, but it could useSPregister, which should be faster than loadingcfp->epfrom memory, whenefp->epis equal toSP - 1. It needs to accompany a PatchPointInvariant::NoEPEscape.