src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp

BarrierSetC1_v3

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  void G1BarrierSetAssembler::generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm) {
    __ prologue("g1_pre_barrier", false);
    // arg0 : previous value of memory
  
-   BarrierSet* bs = BarrierSet::barrier_set();
    __ push(rax);
    __ push(rdx);
  
    const Register pre_val = rax;
    const Register thread = NOT_LP64(rax) LP64_ONLY(r15_thread);
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