[PATCH] Don't emit vendor attribute section if there is no attribute need to emit.

[Jim Wilson]

On Mon, Jan 14, 2019 at 4:52 PM Jim Wilson <jimw@sifive.com> wrote:
> OBJ_ATTR_PROC is over conservative, and can be safely removed.  We do
> need to verify this by checking every target that supports a target
> dependent attribute with this patch.  That is arc, arm, msp430, and
> tic6x.

I tested these four targets with and without the patch and didn't see
any problem.  I also checked the source code, and I don't see any way
to get a zero size attribute section from them, so they can't be
affected by the patch.

This is OK to apply.

Jim