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c14781c9c9
Summary: We should excluded unreachable operands from processing as their DFS visitation order is undefined. When `renameUses` function sorts `OpsToRename` (https://fburl.com/d2wubn60), the comparator assumes that the parent block of the operand has a corresponding dominator tree node. This is not the case for unreachable operands and crashes the compiler. Reviewers: dberlin, mgrang, davide Subscribers: efriedma, hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D61154 llvm-svn: 360796