Re: [riscv-port] RFR: 8279996: riscv: RVB: Add zeros/population count instructions [v2]

On Fri, 14 Jan 2022 07:09:24 GMT, Feilong Jiang <fjiang@openjdk.org> wrote:

...

This PR implements zeros and population count instructions: `clz`/`clzw`/`ctz`/`ctzw`/`cpop`/`cpopw`.

New C2 instructions are covered by the following JTREG tests: - test/hotspot/jtreg/compiler/codegen/Test6823354.java - test/hotspot/jtreg/compiler/codegen/Test7100757.java - test/hotspot/jtreg/compiler/codegen/Test8005033.java

Hotspot and jdk tier1 tests on QEMU (with and without UseRVB) are passed without new failures.

Feilong Jiang has updated the pull request incrementally with one additional commit since the last revision:

update license to new year

OK. ------------- Marked as reviewed by fyang (Lead). PR: https://git.openjdk.java.net/riscv-port/pull/45