Re: RVC by default?

[Xiaolin Zheng]

Hi Vladimir,
Haha, thanks for the confirmation. Though I didn't managed to send it to the riscv-port-dev at last, I began to realize maybe I have sent several e-mails to you and Aleksey. Very much sorry for bothering you, please forgive me.
At that time, what I know is they updated the OS to 21.04 and the problem's gone. I will confirm with them tomorrow.
Best,
Xiaolin
------------------------------------------------------------------
From:Vladimir Kempik <vladimir.kempik at gmail.com>
Send Time:2022年9月15日(星期四) 23:25
To:郑孝林(云矅) <yunyao.zxl at alibaba-inc.com>
Cc:riscv-port-dev <riscv-port-dev-retn at openjdk.org>; Aleksey Shipilev <shade at redhat.com>; riscv-port-dev at openjdk.org <riscv-port-dev at openjdk.org>
Subject:Re: RVC by default?
Hello
Looks pretty similar to me.
for me it was vanilla recent jdk19 
But later, when I backported next patches to my jdk19 branch, the issue became different ( Arena alloc issue I have reported earlier):
8290496: riscv: Fix build warnings-as-errors with GCC 11
8290280: riscv: Clean up stack and register handling in interpreter
8290137: riscv: small refactoring for add_memory_int32/64
8290164: compiler/runtime/TestConstantsInError.java fails on riscv
8291952: riscv: Remove PRAGMA_NONNULL_IGNORED
8291947: riscv: fail to build after JDK-8290840
8291893: riscv: remove fence.i used in user space Backport-of:...
8292713: Unsafe.allocateInstance should be intrinsified without UseUnalignedAccesses
8292867: RISC-V: Simplify weak CAS return value handling
8292407: Improve Weak CAS VarHandle/Unsafe tests resilience under spurious failures
8293100: RISC-V: Need to save and restore callee-saved FloatRegisters in...
8293050: RISC-V: Remove redundant non-null assertions about macro-assembler
8293474: RISC-V: Unify the way of moving function pointer
8293524: RISC-V: Use macro-assembler functions as appropriate
8293566: RISC-V: Clean up push and pop registers
I’m gonna bisect this list and find what changed the behaviour.
The workaround says - update to ubuntu 21.04, but its not clear - update runtime environment or build environment.
For me the runtime is ubuntu 22.04, but I build the jdk with sysroot of ubuntu 20.04 ( for better compatibility) and gcc 11.2
Regards, Vladimir
15 сент. 2022 г., в 18:17, Xiaolin Zheng <yunyao.zxl at alibaba-inc.com <mailto:yunyao.zxl at alibaba-inc.com >> написал(а):
Hi Vladimir,
The mailing list says my e-mail exceeds 40KB so I get rejected. But I want to send it out anyway before getting off today's work. So here is a work around:
Please check:
https://gist.github.com/zhengxiaolinX/25c32853690f7ac1c125d2fe1da19710 <https://gist.github.com/zhengxiaolinX/25c32853690f7ac1c125d2fe1da19710 >
Looking forward to your opinions.
Best,
Xiaolin
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