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31689680ec
As it turns out the source of the sunkaddr can be a constant, in which case there is not an instruction to delete, causing the cleanup code introduced in r204833 to crash. This patch adds a dynamic check to ensure the deleted value is in fact an instruction and not a constant. Patch by Louis Gerbarg <lgg@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205941 91177308-0d34-0410-b5e6-96231b3b80d8
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