RFR(XS): 8232106: [x86] C2: SIGILL due to usage of SSSE3 instructions on processors which don't support it

[Tobias Hartmann]

Hi Martin,

so this was introduced by JDK-8222074, right?

Just wondering, does AddReductionVI require SSSE3 as well?

Thanks,
Tobias

On 10.10.19 14:29, Doerr, Martin wrote:
> Hi,
> 
> we have observed a JVM crash in JDK13u on an AMD Opteron machine.
> 
> Instructions like pabsb/w/d, phaddd get emitted when SSE3 is available, but are not supported without SSSE3.
> E.g. AMD Opteron(tm) Processor 2218 has SSE3, but not SSSE3.
> 
> Should we fix it this way?
> http://cr.openjdk.java.net/~mdoerr/8232106_x86_ssse3/webrev.00/
> 
> Best regards,
> Martin
>