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

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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
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9
hotspot/src/share/vm/code/scopeDesc.hpp
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@ -39,7 +39,8 @@ class SimpleScopeDesc : public StackObj {
DebugInfoReadStream buffer(code, pc_desc->scope_decode_offset());
int ignore_sender = buffer.read_int();
_method = methodOop(buffer.read_oop());
_bci = buffer.read_bci();
bool dummy_reexecute; //only methodOop and bci are needed!
_bci = buffer.read_bci_and_reexecute(dummy_reexecute);
}
methodOop method() { return _method; }
@ -60,8 +61,9 @@ class ScopeDesc : public ResourceObj {
ScopeDesc(const nmethod* code, int decode_offset);
// JVM state
methodHandle method() const { return _method; }
int bci() const { return _bci; }
methodHandle method() const { return _method; }
int bci() const { return _bci; }
bool should_reexecute() const { return _reexecute; }
GrowableArray<ScopeValue*>* locals();
GrowableArray<ScopeValue*>* expressions();
@ -86,6 +88,7 @@ class ScopeDesc : public ResourceObj {
// JVM state
methodHandle _method;
int _bci;
bool _reexecute;
// Decoding offsets
int _decode_offset;