Paul Thomson 2f6a87f610 reduce: improve remove unref instr pass (#2945) ... * Remove Impl struct in Reducer; we can re-add it later (in a cleaner fashion) if we need to. * Add cleanup passes in Reducer; needed so that removal of constants can be disabled during the main passes, and then enabled during cleanup passes, otherwise some main passes can perform worse due to lack of available constants. * Delete passes: remove op name, remove relaxed precision. And delete associated tests. * Add more tests for remove unreferenced instructions. * Always return and write the output file, even if there was a reduction failure. * Only exit with 0 if the reduction completed or we hit the reduction step limit.		2019-10-08 13:02:34 +01:00
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reduce.cpp	reduce: improve remove unref instr pass (#2945)	2019-10-08 13:02:34 +01:00