[PATCH] D11463: [AArch64] Define subtarget feature "reserve-x18"

[Eric Christopher]

Right, but from looking at the two patches basically it's on all the time
right? You initialize it to true and the only way to pass anything is to
turn it on.


On Thu, Jul 23, 2015 at 3:04 PM Akira Hatanaka <ahatanak at gmail.com> wrote:

> ahatanak added a comment.
>
> According to the original email, the option was added because they wanted
> to reserve x18 for free bsd kernel but not didn't want to do so for
> userland programs. They wanted an option to reserve register x18, which is
> normally not reserved.
>
>
> http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20150119/121916.html
>
>
> http://reviews.llvm.org/D11463
>
>
>
>
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