JDK-8253921 : replay compilations of methods which use JSR292
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: hs25,9,10,11,12,13,14,15,16
  • Priority: P3
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2020-10-02
  • Updated: 2024-09-17
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Other
tbdUnresolved
Related Reports
Blocks :  
JDK-8273919 - Improve compiler replay
Blocks :  
JDK-8012268 - ciReplay: process_ciInstanceKlass: JVM_CONSTANT_MethodHandle not supported
Blocks :  
JDK-8012267 - ciReplay: fails to resolve @SignaturePolymorphic methods in replay data
Blocks :  
JDK-8332116 - Test compiler/ciReplay/TestServerVM.java failed: Unexpected exit code for positive case
Cloners :  
JDK-8271911 - improve support of replay compilations for methods which use JSR292
Description
This is an umbrella RFE for several blocker issues.
Comments
[~kvn] Yes, for a full solution we probably do need to be able to serialize the equivalent of a class file, and have the ci layer "proxy" cached values instead of querying the VM.
29-10-2020
We only care that current class info in replay file (fields values and MDOs) matched class data we dump. We can add checks to skip calls into VM when we process such classes.
27-10-2020
https://bugs.openjdk.java.net/browse/JDK-8251925 needs this! Dean, is it possible simply teach C2 to dump class file (constant pool and methods bytecode) for dynamic class and mark such class to skip resolution during replay and load all data from replay file into separate C2 buffer which skip all verifications and simply used for compilation?
27-10-2020