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authorBjörn Gustavsson <[email protected]>2016-05-23 20:13:48 +0200
committerBjörn Gustavsson <[email protected]>2016-09-21 14:07:53 +0200
commit01835845579e9f0a8da3574864747cd3ba10db6e (patch)
tree024bddef605721cc1c22a1827ceb0fdb8df93525 /lib/compiler/src/v3_kernel.erl
parent97820c026969de7e98d948b301da1e6956f0504d (diff)
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Simplify beam_utils
When beam_utils was first written, it did not have the functions for testing whether a register was not used. Those were added later, in sort of a hacky way. Also, is_killed*() and is_not_used*() for Y registers would return the same answer. Fix that to make the API more consistent (an Y register can only be killed by a deallocate/1 instruction). We will need to change beam_trim to call beam_utils:is_not_used/3 instead of beam_utils:is_killed/3.
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