echuraev opened a new pull request, #11021:
URL: https://github.com/apache/tvm/pull/11021
Faced situation when generated OpenCL kernel contained the following if
condition:
```
if (uint4(...) && (int4(...) == int4(...)))
```
In this case, got the following error:
"can't convert between vector values of different size ('uint4' and 'int
__attribute__((ext_vector_type(4)))')"
Added casts for binary ops. But it was necessary to modify `CastFromTo`
and add new method `CastTo`. Because with `CastFromTo` the following
code was generated:
```
if (uint4(...) && (convert_uint4(int4(...)) == convert_uint4(int4(...))))
```
But the OpenCL compiler still generated the same error.
This is why added new method `CastTo`. In this method we don't check the
current type of op and just add cast to a new type.
Finally the following code will be generated:
```
if (uint4(...) && convert_uint4(convert_uint4(int4(...)) ==
convert_uint4(int4(...))))
```
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