[riscv-port] RFR: 8279344: riscv: RVB: Add bitwise rotation instructions [v6]
Feilong Jiang
fjiang at openjdk.java.net
Tue Jan 4 02:59:18 UTC 2022
> This PR implements bitwise instructions of RISC-V BitManipulation Extension, including ror/rolw/ror/rori/roriw/rorw. New C2 instructions are covered by following JTREG tests:
> - test/hotspot/jtreg/compiler/intrinsics/TestRotate.java
> - test/jdk/java/lang
>
> This PR also add zext/bext C2 instructions that were missed in JDK-8279213
>
> Hotspot and jdk tier1 test on QEMU (enable RVB) are passed without new failures.
Feilong Jiang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
- remove unused imm definition
- remove unused instruction in riscv_b.ad
- 8279344: riscv: RVB: Add bitwise rotation instructions
-------------
Changes:
- all: https://git.openjdk.java.net/riscv-port/pull/39/files
- new: https://git.openjdk.java.net/riscv-port/pull/39/files/428e2151..92e21821
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=riscv-port&pr=39&range=05
- incr: https://webrevs.openjdk.java.net/?repo=riscv-port&pr=39&range=04-05
Stats: 41 lines in 4 files changed: 4 ins; 8 del; 29 mod
Patch: https://git.openjdk.java.net/riscv-port/pull/39.diff
Fetch: git fetch https://git.openjdk.java.net/riscv-port pull/39/head:pull/39
PR: https://git.openjdk.java.net/riscv-port/pull/39
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