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Commit a32f0dcb authored by River Riddle's avatar River Riddle Committed by A. Unique TensorFlower
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Add support to GreedyPatternRewriter for erasing unreachable blocks. 

Rewrite patterns may make modifications to the CFG, including dropping edges between blocks. This change adds a simple unreachable block elimination run at the end of each iteration to ensure that the CFG remains valid.

PiperOrigin-RevId: 277545805
parent 0568e952
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