[13] RFR (S): 8218163: C2: Continuous deoptimization w/ Reason_speculate_class_check and Action_none

Vladimir Kozlov vladimir.kozlov at oracle.com
Fri Feb 1 05:16:25 UTC 2019

Looks good.


On 1/31/19 11:46 AM, Vladimir Ivanov wrote:
> http://cr.openjdk.java.net/~vlivanov/8218163/webrev.00/
> https://bugs.openjdk.java.net/browse/JDK-8218163
> Guarded inlining doesn't take recompilation count into account when decided whether to issue an uncommon trap or virtual 
> call on slow path.
> But it may end up as uncommon trap with Action_none when recompilation count is too high.
> The fix is to consider both trap & recompilation counts when making the decision.
> Testing: hs-precheckin-comp, tier1-5
> Best regards,
> Vladimir Ivanov

More information about the hotspot-compiler-dev mailing list