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authorBjörn Gustavsson <[email protected]>2010-11-26 11:47:50 +0100
committerBjörn Gustavsson <[email protected]>2010-12-02 17:12:24 +0100
commit2b03fbacf1ac0c06a84439baac90d418916a1778 (patch)
treea42ca97705f775998d0bc779db20b47b4e752816 /lib/ic
parent8836ebccae92886decf5645944ae4ce8a2f99947 (diff)
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beam_utils: Fix check_liveness/3 for receive loops
Sometimes the beam_bool pass wants to know whether an y register will be killed by the code that follows and will do (effectively): beam_utils:is_killed({y,Y}, Code, L) When asked to calculate the liveness for an y register, beam_utils:is_killed/3 will loop forever if the code includes a receive loop. Since this rarely occurs, fix the problem in the simplest and most conservative way. Reported-by: Christopher Williams
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