archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-21 03:24:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot

Browse source 
Developed a reexecute logic for the interpreter to reexecute the bytecode when deopt happens

Reviewed-by: kvn, never, jrose, twisti
This commit is contained in:
Changpeng Fang 2009-07-31 17:12:33 -07:00
parent f2ea22a547
commit ae00753bf7
29 changed files with 465 additions and 241 deletions
Download patch file Download diff file Expand all files Collapse all files

13
hotspot/src/share/vm/opto/graphKit.hpp
View file

@ -763,3 +763,16 @@ class BuildCutout: public PreserveJVMState {
BuildCutout(GraphKit* kit, Node* p, float prob, float cnt = COUNT_UNKNOWN);
~BuildCutout();
};
// Helper class to preserve the original _reexecute bit and _sp and restore
// them back
class PreserveReexecuteState: public StackObj {
protected:
GraphKit* _kit;
uint _sp;
JVMState::ReexecuteState _reexecute;
public:
PreserveReexecuteState(GraphKit* kit);
~PreserveReexecuteState();
};