“cfffb1a36251e7d06535dac6db220131e36fe9f8”上不存在“paddle/phi/ops/compat/trunc_sig.cc”
* add sparse support for sum op * typo fix * fix gpu build error * fix unittest error * typo fix * infer var type and shape in op_test * follow comments * fix build error * bypass some unittests depend on NetOp