yaxunl added a comment.
In D56411#1350233 <https://reviews.llvm.org/D56411#1350233>, @jlebar wrote:
> __host__ void bar() {}
> __device__ int bar() { return 0; }
> __host__ __device__ void foo() { int x = bar(); }
> template <void (*devF)()> __global__ void kernel() { devF();}
>
> kernel<foo>();
>
>
>
>
> > we DTRT for this case. Here __host__ bar needs to return int since foo()
> > expects that. will add a test for that.
>
> `__host__ bar()` should not need to return int if `foo` is inline (or
> templated), because then we should never codegen `foo` for host. I guess my
> question is, we should be sure that `kernel<foo>()` does not force an
> inline/templated `foo` to be codegen'ed for host. (Sorry that wasn't more
> clear before.)
Sorry I am not quite get it. bar() is a `__host__` function with definition, so
clang does codegen for it. clang also does codegen for foo() since it has
`__host__ __device__` attribute.
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https://reviews.llvm.org/D56411/new/
https://reviews.llvm.org/D56411
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