[CINN] Re-Implement operator = for two Expr Tree #55145
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Jul 24, 2023
* optimize expr operator = implementation * fix codestyle
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PR types
Performance optimization
PR changes
Others
Description
Former implementation is to transform two AST tree as two string and compare their equivalence and it is cost-time, now we compare them by doing dfs traversal on both two tree。
Compared two implementation, the latter can get approximately 10% performance profit on batchnorm operator on function complieGraph in CINN。
compilerGraph cost time
Pcard-72718