`vtkm::[U]Int*` types depending of each platform/arch would translate to
different integer types. We cannot make a generalization with this.
A simple way to handle this is to simply use primitive types, such as
char, signed char, long..., instead of vtkm::[U]Int*. This makes sure
that every primitive type is actually instantiated.
We could potentially use this in other filters instantiation file.
This error has been reported in VTK when being build with vtkm.
A large portion of the VTK-m filters are now compiled into the
vtkm_filter library. These pre-built filters now don't include
the respective hxx file to remove the amount of template
instantiation users do.
To verify that this removal reduces compiler memory ( and maybe time)
I profiled the compiler while it building filter tests in debug mode.
Here is a selection of results:
```
CleanGrid 10.25s => 9.01s, 901MB => 795MB
ExternalFaces 13.40s => 5.96s, 1122MB => 744MB
ExtractStructured 4.69s => 4.75s, 492MB => 492MB
GradientExplicit 22.97s => 5.88s, 1296MB => 740MB
```
- It explicitly instantiate its concrete templates to
the supported types.
- It disables implicit template instantations for the
the supported types.
- Also fix small typo in Contour impl include guards
Signed-off-by: Vicente Adolfo Bolea Sanchez <vicente.bolea@kitware.com>
