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src/share/vm/c1/c1_LIR.cpp
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@@ -1514,10 +1514,21 @@
c->set_should_profile(true);
}
append(c);
}
+void LIR_List::null_check(LIR_Opr opr, CodeEmitInfo* info, bool deoptimize_on_null) {
+ if (deoptimize_on_null) {
+ // Emit an explicit null check and deoptimize if opr is null
+ CodeStub* deopt = new DeoptimizeStub(info);
+ cmp(lir_cond_equal, opr, LIR_OprFact::oopConst(NULL));
+ branch(lir_cond_equal, T_OBJECT, deopt);
+ } else {
+ // Emit an implicit null check
+ append(new LIR_Op1(lir_null_check, opr, info));
+ }
+}
void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
}
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