[aarch64-port-dev ] RFR: 8075930: AARCH64: Use FP Register in C2
edward.nevill at linaro.org
Wed Apr 22 18:58:37 UTC 2015
On 22 April 2015 at 17:58, Andrew Haley <aph at redhat.com> wrote:
> Looking at this thread:
> I'm wondering if we should keep FP as a frame pointer. We'd have a
> slightly more complex method entry sequence, but the profiling and
> debugging advantages look to be quite considerable.
The two are not incompatible. Zoltán Majó has been working on a patch to
use RBP as a proper frame pointer on x86. See
This provides a new flag -XX:+PreserveFramePointer which uses RBP as a
proper frame pointer and -XX:-PreserveFramePointer which uses RBP as a
general purpose register.
I have prepared a mirror patch for this for aarch64. See
Once Zoltán's patch goes in, I can update this for any recent changes and
post a RFR.
All the best,
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