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authorBjörn Gustavsson <[email protected]>2015-04-21 15:21:48 +0200
committerBjörn Gustavsson <[email protected]>2015-04-29 12:23:41 +0200
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beam_utils: Be less conservative about liveness for exit instructions
beam_utils used to be overly conservative about liveness for exit instructions such as: call_ext erlang:exit/1 beam_utils would consider all y registers to be used, to avoid overwriting a catch or try tag. That does not seem to be a real risk. However, we miss opportunities for stack trimming if we consider y registers used by an exit instruction.
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