[Issue 19929] New: LDC support dcompute codegen options?

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19929

          Issue ID: 19929
           Summary: LDC support dcompute codegen options?
           Product: D
           Version: D2
          Hardware: All
                OS: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: visuald
          Assignee: nobody at puremagic.com
          Reporter: turkeyman at gmail.com

It would be really great to get the DCompute codegen options into the LDC
property page. I believe one necessary option is `-mdcompute-targets=`, and I'm
not sure if there are other related build options that should also be exposed
(there's not great resource available on using DCompute).

Ideally, it would be really good to see DCompute as a 1st-class feature when
using LDC with VisualD, I think to execute that, there might also be some
detail to make sure the compute object files find their way to the linker
correctly.
Users specify a set of compute targets, and I believe each one emits a separate
object file... they should all be linked.
Eg: `-mdcompute-targets=ocl-210,cuda-350` would emit the normal compiled
object, and in addition, OpenCL2.1 and CUDA3.5 objects.

I've asked Nick about an option to embed the kernels into the main object file
with appropriately mangled symbol names, but I don't think that exists yet.

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