reduce: fix loop to selection dominance query #2477
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afd
approved these changes
Mar 26, 2019
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Fix #2457.
StructuredLoopToSelectionReductionOpportunity::FixNonDominatedIdUsesconsiders every instruction in the function being modified and tries to fix dominance by checking the dominance of all uses. Unfortunately, some of these "uses" can be OpDecorate instructions that are outside of blocks, which causes a segfault.