[XLA][HloDCE] Removal of unused outputs of fusions to consider multiple users of the same shape index (aka output) #17217
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…le users of the same shape index (aka output) Changes: * Replaces check of users vs number of outputs with checking if number of unique outputs used is smaller than number of outputs * Before this change, if same shape index (aka same output) is used multiple times, we might not end up removing any of the unused. * Before this change, if an output has multiple users, and it is the only one used, we might not remove all the unused fusion outputs (aka will leave around <number of users> outputs). PiperOrigin-RevId: 675754198
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[XLA][HloDCE] Removal of unused outputs of fusions to consider multiple users of the same shape index (aka output)
Changes: