send-pop optimisation #2100
omit branch inside of vm_sendish
Now that opt_bailout is introduced, a method that is entirely pure can have that instruction at the very beginning of its sequence. Why not just invoke such methods as usual and let the instruction do the job. This adds some overhead (frame manipulations previously entirely skipped can now occur) and removes another (purity calculations for non-skippable method calls now eliminated). So let's see the trade-offs.
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