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Commit dd1d3df5 authored by Nick Lewycky's avatar Nick Lewycky
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A dead malloc, a free(NULL) and a free(undef) are all trivially dead

instructions.

This doesn't introduce any optimizations we weren't doing before (except
potentially due to pass ordering issues), now passes will eliminate them sooner
as part of their own cleanups.

llvm-svn: 142787
parent 9d28c26d
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