[RFC] [Hybrid Script] IR Dump

Because HalideIR now can be fully mapped to Hybrid Script and vice versa, I want to support IR dump to Hybrid Script so that users can play with IR body directly.

Which one do you guys prefer?

1. mode=tvm.build(sch, args, target='hybrid'); mode.save('a.py')
2. tvm.hybrid.emit(stmt, file_name)

I personally like the 2nd one better. I do not want touch too much build module thing. I want to make it as standalone as possible.

@tqchen @eqy @yzhliu @kevinthesun @yidawang

[xqdan]

@kevinthesun totally agree with @were and @junrushao1994, to support continue and break, the whole TVM stack would need lots of stuff in traditional compilers, which will make things complicated. if any operators don’t fit into abstraction of TVM, maybe it’s better to support it with low level languages, such as CUDA c. Also it’s interesting to see what’s the real requirements look like.

[kevinthesun]

@junrushao1994 I don’t think we need to support those.