[PATCH] D47694: [CUDA][HIP] Do not emit type info when compiling for device

[Yaxun Liu via Phabricator via cfe-commits]

yaxunl added a comment.

In https://reviews.llvm.org/D47694#1121037, @rjmccall wrote:

> In https://reviews.llvm.org/D47694#1120375, @yaxunl wrote:
>
> > In https://reviews.llvm.org/D47694#1120367, @rjmccall wrote:
> >
> > > Why not just have the driver disable RTTI in the frontend invocation?
> >
> >
> > CUDA/HIP uses single source for device and host. The host code may depend on RTTI,
> >  e.g., an application may include some boost headers which will fail if RTTI is disabled,
> >  therefore RTTI cannot be disabled when compiling device code.
>
>
> It's a single source file, yes, but behind the scenes you do a separate invocation of the compiler to re-parse that file for device code-generation, right?


That's true. However, when compiling for device, the source file is still the original source code which are for both host and device. When compiling
for device, the compiler still needs to parse the source code for host, and there is no way to disable RTTI only for the device code.


https://reviews.llvm.org/D47694