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8227745: Enable Escape Analysis for Better Performance in the Presence of JVMTI Agents

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8233915: JVMTI FollowReferences: Java Heap Leak not found because of C2 Scalar Replacement

Reviewed-by: mdoerr, goetz, sspitsyn, kvn
This commit is contained in:
Richard Reingruber 2020-10-20 15:31:55 +00:00
parent f167a71f1d
commit 40f847e2fb
53 changed files with 5744 additions and 218 deletions
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25
src/hotspot/share/code/scopeDesc.cpp
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@ -31,23 +31,16 @@
#include "oops/oop.inline.hpp"
#include "runtime/handles.inline.hpp"
ScopeDesc::ScopeDesc(const CompiledMethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool rethrow_exception, bool return_oop) {
ScopeDesc::ScopeDesc(const CompiledMethod* code, PcDesc* pd, bool ignore_objects) {
int obj_decode_offset = ignore_objects ? DebugInformationRecorder::serialized_null : pd->obj_decode_offset();
_code = code;
_decode_offset = decode_offset;
_decode_offset = pd->scope_decode_offset();
_objects = decode_object_values(obj_decode_offset);
_reexecute = reexecute;
_rethrow_exception = rethrow_exception;
_return_oop = return_oop;
decode_body();
}
ScopeDesc::ScopeDesc(const CompiledMethod* code, int decode_offset, bool reexecute, bool rethrow_exception, bool return_oop) {
_code = code;
_decode_offset = decode_offset;
_objects = decode_object_values(DebugInformationRecorder::serialized_null);
_reexecute = reexecute;
_rethrow_exception = rethrow_exception;
_return_oop = return_oop;
_reexecute = pd->should_reexecute();
_rethrow_exception = pd->rethrow_exception();
_return_oop = pd->return_oop();
_has_ea_local_in_scope = ignore_objects ? false : pd->has_ea_local_in_scope();
_arg_escape = ignore_objects ? false : pd->arg_escape();
decode_body();
}
@ -59,6 +52,8 @@ void ScopeDesc::initialize(const ScopeDesc* parent, int decode_offset) {
_reexecute = false; //reexecute only applies to the first scope
_rethrow_exception = false;
_return_oop = false;
_has_ea_local_in_scope = parent->has_ea_local_in_scope();
_arg_escape = false;
decode_body();
}