git: openjdk/jdk: 8298075: RISC-V: Implement post-call NOPs

[Fei Yang]

Changeset: 74f346b3
Author:    Xiaolin Zheng <xlinzheng at openjdk.org>
Committer: Fei Yang <fyang at openjdk.org>
Date:      2022-12-08 02:19:35 +0000
URL:       https://git.openjdk.org/jdk/commit/74f346b33f7fa053ad5c99ef85baa32b7fb12fa6

8298075: RISC-V: Implement post-call NOPs

Reviewed-by: fyang, luhenry

! src/hotspot/cpu/riscv/c1_CodeStubs_riscv.cpp
! src/hotspot/cpu/riscv/c2_safepointPollStubTable_riscv.cpp
! src/hotspot/cpu/riscv/macroAssembler_riscv.cpp
! src/hotspot/cpu/riscv/macroAssembler_riscv.hpp
! src/hotspot/cpu/riscv/nativeInst_riscv.cpp
! src/hotspot/cpu/riscv/nativeInst_riscv.hpp