Hahnfeld marked 4 inline comments as done.
Hahnfeld added inline comments.
================
Comment at: lib/Driver/ToolChains/Cuda.cpp:170-182
- // This code prevents IsValid from being set when
- // no libdevice has been found.
- bool allEmpty = true;
- std::string LibDeviceFile;
- for (auto key : LibDeviceMap.keys()) {
- LibDeviceFile = LibDeviceMap.lookup(key);
- if (!LibDeviceFile.empty())
----------------
tra wrote:
> Hahnfeld wrote:
> > tra wrote:
> > > I'd keep this code. It appears to serve useful purpose as it requires
> > > CUDA installation to have at least some libdevice library in it. It
> > > gives us a change to find a valid installation, instead of ailing some
> > > time later when we ask for a libdevice file and fail because there are
> > > none.
> > We had some internal discussions about this after I submitted the patch
> > here.
> >
> > The main question is: Do we want to support CUDA installations without
> > libdevice and are there use cases for that? I'd say that the user should be
> > able to use a toolchain without libdevice together with `-nocudalib`.
> Sounds reasonable. How about keeping the code but putting it under
> `if(!hasArg(nocudalib))`?
>
Ok, I'll do that in a separate patch and keep the code here for now.
https://reviews.llvm.org/D38883
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