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8166806: Add intrinsic support for writer used in event based tracing

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Reviewed-by: kvn, egahlin
This commit is contained in:
Markus Grönlund 2016-10-21 16:20:18 +02:00
parent 2069d6b6b3
commit 1175b7f1c8
6 changed files with 64 additions and 0 deletions
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19
hotspot/src/share/vm/c1/c1_LIRGenerator.cpp
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@ -3120,6 +3120,22 @@ void LIRGenerator::do_ClassIDIntrinsic(Intrinsic* x) {
__ move(id, rlock_result(x));
}
void LIRGenerator::do_getBufferWriter(Intrinsic* x) {
LabelObj* L_end = new LabelObj();
LIR_Address* jobj_addr = new LIR_Address(getThreadPointer(),
in_bytes(TRACE_THREAD_DATA_WRITER_OFFSET),
T_OBJECT);
LIR_Opr result = rlock_result(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);
__ branch_destination(L_end->label());
}
#endif
@ -3151,6 +3167,9 @@ void LIRGenerator::do_Intrinsic(Intrinsic* x) {
case vmIntrinsics::_getClassId:
do_ClassIDIntrinsic(x);
break;
case vmIntrinsics::_getBufferWriter:
do_getBufferWriter(x);
break;
case vmIntrinsics::_counterTime:
do_RuntimeCall(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), x);
break;