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8168662: Intrinsic support for event based tracing needs explicit control dependency

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Reviewed-by: kvn, rehn
This commit is contained in:
Markus Grönlund 2016-10-27 11:14:30 +02:00
parent a4cfffae9b
commit 5ce7a44cf0
1 changed files with 7 additions and 8 deletions
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15
hotspot/src/share/vm/opto/library_call.cpp
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@ -3213,24 +3213,23 @@ bool LibraryCallKit::inline_native_getBufferWriter() {
Node* test_jobj_eq_null = _gvn.transform( new BoolNode(jobj_cmp_null, BoolTest::eq) ); Node* test_jobj_eq_null = _gvn.transform( new BoolNode(jobj_cmp_null, BoolTest::eq) );
IfNode* iff_jobj_null = IfNode* iff_jobj_null =
create_and_map_if(control(), test_jobj_eq_null, PROB_NEVER, COUNT_UNKNOWN); create_and_map_if(control(), test_jobj_eq_null, PROB_MIN, COUNT_UNKNOWN);
enum { _normal_path = 1, enum { _normal_path = 1,
_null_path = 2, _null_path = 2,
PATH_LIMIT }; PATH_LIMIT };
RegionNode* result_rgn = new RegionNode(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, TypePtr::BOTTOM);
record_for_igvn(result_rgn);
Node* jobj_is_null = _gvn.transform( new IfTrueNode(iff_jobj_null) ); Node* jobj_is_null = _gvn.transform(new IfTrueNode(iff_jobj_null));
result_rgn->init_req(_null_path, jobj_is_null); result_rgn->init_req(_null_path, jobj_is_null);
result_val->init_req(_null_path, null()); result_val->init_req(_null_path, null());
Node* jobj_is_not_null = _gvn.transform( new IfFalseNode(iff_jobj_null) ); Node* jobj_is_not_null = _gvn.transform(new IfFalseNode(iff_jobj_null));
result_rgn->init_req(_normal_path, jobj_is_not_null); result_rgn->init_req(_normal_path, jobj_is_not_null);
Node* res = make_load(NULL, jobj, TypeInstPtr::BOTTOM, T_OBJECT, MemNode::unordered); Node* res = make_load(jobj_is_not_null, jobj, TypeInstPtr::NOTNULL, T_OBJECT, MemNode::unordered);
result_val->init_req(_normal_path, res); result_val->init_req(_normal_path, res);
set_result(result_rgn, result_val); set_result(result_rgn, result_val);