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Chris Lattner
39387a5c93
Handle allocations that, even after removing dead uses, still have more than
one use (but one is a cast). This handles the very common case of: X = alloc [n x byte] Y = cast X to somethingbetter seteq X, null In order to avoid infinite looping when there are multiple casts, we only allow this if the xform is strictly increasing the alignment of the allocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23961 91177308-0d34-0410-b5e6-96231b3b80d8
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