[PATCH] D44985: Remove initializer for CUDA shared varirable

[Artem Belevich via Phabricator via cfe-commits]

tra added a comment.

In https://reviews.llvm.org/D44985#1050670, @rjmccall wrote:

> What exactly are you trying to express here?  Are you just trying to make these external declarations when compiling for the device because `__shared__` variables are actually defined on the host?  That should be handled by the frontend by setting up the AST so that these declarations are not definitions.


__shared__ vars (at least in CUDA) are weird. Local-scoped ones are implicitly static (which compiler will attempt to zero-init) but in CUDA __shared__ variables can't have static initializers and we don't know the value of such vars when we launch the kernel.


https://reviews.llvm.org/D44985