Feng Liu 9b20a4ccdf add a method to get FloatAttr value as double ... Sometimes we have to get the raw value of the FloatAttr to invoke APIs from non-MLIR libraries (i.e. in the tpu_ops.inc and convert_tensor.cc files). Using `FloatAttr::getValue().convertToFloat()` and `FloatAttr::getValue().convertToDouble()` is not safe because interally they checke the semantics of the APFloat in the attribute, and the semantics is not always specified (the default value is f64 then convertToFloat will fail) or inferred incorrectly (for example, using 1.0 instead of 1.f for IEEEFloat). Calling these convert methods without knowing the semantics can usually crash the compiler. This new method converts the value of a FloatAttr to double even if it loses precision. Currently this method can be used to read in f32 data from arrays. PiperOrigin-RevId: 227076616		2019-03-29 14:41:34 -07:00
mlir	add a method to get FloatAttr value as double	2019-03-29 14:41:34 -07:00