[riscv-port] RFR: 8278994: riscv: RVC: basic instruction set

[Fei Yang]

On Mon, 20 Dec 2021 08:10:10 GMT, Xiaolin Zheng <xlinzheng at openjdk.org> wrote:

> Hi team,
> 
> This patch includes the basic definition of the RVC instruction set and some cleanups. Tested a simple `test/hotspot/jtreg/compiler/` folder on qemu.
> 
> Thanks,
> Xiaolin

Looks like the previous discussion about compressible region is not reflected here in this PR. Could you please explain your approach?

-------------

PR: https://git.openjdk.java.net/riscv-port/pull/34