[8u] RFR 8236179: C1 register allocation error with T_ADDRESS

[Aleksey Shipilev]

On 3/25/21 10:53 AM, Severin Gehwolf wrote:
> On Thu, 2021-03-25 at 09:36 +0000, Andrew Haley wrote:
>> Do we have a test case for 8u?
> 
> I don't think so. At least not that I can see. From the bug it seems to
> be reproducible with Shenandoah or some Cassandra workloads (via the
> CRC32 intrinsic). Aleksey pointed to this:
> https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/file/6021152f9ff3/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp#l991

Yeah, but that is for x86 CRC32, so we cannot see this on AArch64. I think it would only reproduce 
running Shenandoah. Maybe running jcstress with Shenandoah on current 8u would manifest like this. 
Let me try...

-- 
Thanks,
-Aleksey