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8210158: Accessorize JFR getEventWriter() intrinsics

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Reviewed-by: kvn, neliasso, roland, rbackman
This commit is contained in:
Erik Österlund 2018-09-05 10:11:42 +02:00
parent f1202dc4dc
commit 1c727102ab
2 changed files with 10 additions and 7 deletions
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5
src/hotspot/share/c1/c1_LIRGenerator.cpp
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@ -2979,7 +2979,10 @@ void LIRGenerator::do_getEventWriter(Intrinsic* x) {
__ move_wide(jobj_addr, result);
__ cmp(lir_cond_equal, result, LIR_OprFact::oopConst(NULL));
__ branch(lir_cond_equal, T_OBJECT, L_end->label());
__ move_wide(new LIR_Address(result, T_OBJECT), result);
LIR_Opr jobj = new_register(T_OBJECT);
__ move(result, jobj);
access_load(IN_NATIVE, T_OBJECT, LIR_OprFact::address(new LIR_Address(jobj, T_OBJECT)), result);
__ branch_destination(L_end->label());
}

12
src/hotspot/share/opto/library_call.cpp
View file

@ -2863,8 +2863,7 @@ bool LibraryCallKit::inline_native_getEventWriter() {
Node* tls_ptr = _gvn.transform(new ThreadLocalNode());
Node* jobj_ptr = basic_plus_adr(top(), tls_ptr,
in_bytes(THREAD_LOCAL_WRITER_OFFSET_JFR)
);
in_bytes(THREAD_LOCAL_WRITER_OFFSET_JFR));
Node* jobj = make_load(control(), jobj_ptr, TypeRawPtr::BOTTOM, T_ADDRESS, MemNode::unordered);
@ -2879,16 +2878,17 @@ bool LibraryCallKit::inline_native_getEventWriter() {
PATH_LIMIT };
RegionNode* result_rgn = new RegionNode(PATH_LIMIT);
PhiNode* result_val = new PhiNode(result_rgn, TypePtr::BOTTOM);
PhiNode* result_val = new PhiNode(result_rgn, TypeInstPtr::BOTTOM);
Node* jobj_is_null = _gvn.transform(new IfTrueNode(iff_jobj_null));
result_rgn->init_req(_null_path, jobj_is_null);
result_val->init_req(_null_path, null());
Node* jobj_is_not_null = _gvn.transform(new IfFalseNode(iff_jobj_null));
result_rgn->init_req(_normal_path, jobj_is_not_null);
Node* res = make_load(jobj_is_not_null, jobj, TypeInstPtr::NOTNULL, T_OBJECT, MemNode::unordered);
set_control(jobj_is_not_null);
Node* res = access_load(jobj, TypeInstPtr::NOTNULL, T_OBJECT,
IN_NATIVE | C2_CONTROL_DEPENDENT_LOAD);
result_rgn->init_req(_normal_path, control());
result_val->init_req(_normal_path, res);
set_result(result_rgn, result_val);