Maxim Kalinin ec36c793e8 Eliminate redundant subexpressions (#3047) ... * Eliminate redundant subexpressions Apply local value numbering to merge graph nodes that will always evaluate to the same value. * Rename cpp->cc * Handle optional arguments * Add test models * Add more tests with optional arguments * Fix processing of subgraphs Also, be resilient to possible mixture of optional and variadic parameters * Fix random operators * Address PR comments * Minor changes and a test * Move CSE before constant folding * Random* operators are always non-deterministic Even when seed is provided. * Fix a CSE test * Reuse the list of non-deterministic operators with constant folding pass * Address PR comments * Fix formatting * Address PR comment * Minor cleanup / comments * Fix build failure in Linux * Reuse existing optimizer/utils file. Also, check for graph outputs when removing a node. * Add a test * Fix compiler warnings * Fix build in older compilers * More compatibility with old STL versions		2020-08-14 01:13:05 -07:00
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onnxruntime/core	Eliminate redundant subexpressions (#3047)	2020-08-14 01:13:05 -07:00