RFR(S): 8214352: C1: Unnecessary "compilation bailout: block join failed" with JVMTI
martin.doerr at sap.com
Mon Dec 3 10:24:11 UTC 2018
thanks for reviewing. I hope a C1 expert can find some time to take a look.
From: hotspot-compiler-dev <hotspot-compiler-dev-bounces at openjdk.java.net> On Behalf Of Vladimir Kozlov
Sent: Sonntag, 2. Dezember 2018 01:50
To: hotspot-compiler-dev at openjdk.java.net
Subject: Re: RFR(S): 8214352: C1: Unnecessary "compilation bailout: block join failed" with JVMTI
Seems fine to me but I am not C1 expert.
On 11/27/18 3:03 AM, Doerr, Martin wrote:
> C1 currently bails out when a local value is derived from a Phi with different types.
> According to comments, this case is supposed to be very rare, but it's not so rare when a JVMTI agent is used
> (capability "can_access_local_variables").
> I'd like to fix this.
> Issue with more detailed description:
> Patch successfully ran through a substantial amount of tests with enabled "can_access_local_variables". Please review.
> Best regards,
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