RFR: 8215547: ZGC: Fix incorrect match rule for loadBarrierWeakSlowRegNoVec

[Erik Osterlund]

Hi Per,

Looks even better.

Thanks,
/Erik

> On 19 Dec 2018, at 12:51, Per Liden <per.liden at oracle.com> wrote:
> 
> Nils, Erik and I discussed this further off-line and found a few other inconsistencies and potential bugs. Here's an updated webrev reflecting that:
> 
> http://cr.openjdk.java.net/~pliden/8215547/webrev.1
> 
> This patch has passed tier1-6 and 10+ iterations in gc-test-suite.
> 
> /Per
> 
>> On 12/18/18 10:45 AM, Per Liden wrote:
>> The AD matching for loadBarrierWeakSlowRegNoVec is incorrect. It should match against a LoadBarrierWeakSlowReg, not LoadBarrierSlowReg.
>> Also the format lines for loadBarrier*SlowRegXmmAndYmm are missing the "AndYmm" part.
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8215547
>> Webrev: http://cr.openjdk.java.net/~pliden/8215547/webrev.0
>> /Per