This patch is not for callee saved registers. It only optimizes the deferred code where it removes some push/pop. The performance is not modified, only the code size is shrunk a little bit.
As Benedikt mentioned it may not be the best time to perform this changes and we are fine with that. As a side when we do any computation on frames (deopt, GC, debugger) we always start with the last frame. It's possible to restore callee saved register while we unwind the frames. In that case, the computations have to deal with registers in addition to stack slots. The major problem is for C functions frames where it's difficult to save enough information during the call without slowing down the execution for the normal path. -- -- v8-dev mailing list [email protected] http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
