src/hotspot/cpu/ppc/c1_LIRGenerator_ppc.cpp

rev 56016 : 8229422: Taskqueue: Outdated selection of weak memory model platforms
Reviewed-by:

*** 640,650 ****
    LIR_Opr t2 = LIR_OprFact::illegalOpr;
    cmp_value.load_item();
    new_value.load_item();
  
    // Volatile load may be followed by Unsafe CAS.
!   if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
      __ membar();
    } else {
      __ membar_release();
    }
  
--- 640,650 ----
    LIR_Opr t2 = LIR_OprFact::illegalOpr;
    cmp_value.load_item();
    new_value.load_item();
  
    // Volatile load may be followed by Unsafe CAS.
!   if (SUPPORT_IRIW_FOR_NOT_MULTI_COPY_ATOMIC_CPU) {
      __ membar();
    } else {
      __ membar_release();
    }
  
*** 672,690 ****
    LIR_Opr tmp = FrameMap::R0_opr;
  
    value.load_item();
  
    // Volatile load may be followed by Unsafe CAS.
!   if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
      __ membar();
    } else {
      __ membar_release();
    }
  
    __ xchg(addr, value.result(), result, tmp);
  
!   if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
      __ membar_acquire();
    } else {
      __ membar();
    }
    return result;
--- 672,690 ----
    LIR_Opr tmp = FrameMap::R0_opr;
  
    value.load_item();
  
    // Volatile load may be followed by Unsafe CAS.
!   if (SUPPORT_IRIW_FOR_NOT_MULTI_COPY_ATOMIC_CPU) {
      __ membar();
    } else {
      __ membar_release();
    }
  
    __ xchg(addr, value.result(), result, tmp);
  
!   if (SUPPORT_IRIW_FOR_NOT_MULTI_COPY_ATOMIC_CPU) {
      __ membar_acquire();
    } else {
      __ membar();
    }
    return result;
*** 696,714 ****
    LIR_Opr tmp = FrameMap::R0_opr;
  
    value.load_item();
  
    // Volatile load may be followed by Unsafe CAS.
!   if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
      __ membar(); // To be safe. Unsafe semantics are unclear.
    } else {
      __ membar_release();
    }
  
    __ xadd(addr, value.result(), result, tmp);
  
!   if (support_IRIW_for_not_multiple_copy_atomic_cpu) {
      __ membar_acquire();
    } else {
      __ membar();
    }
    return result;
--- 696,714 ----
    LIR_Opr tmp = FrameMap::R0_opr;
  
    value.load_item();
  
    // Volatile load may be followed by Unsafe CAS.
!   if (SUPPORT_IRIW_FOR_NOT_MULTI_COPY_ATOMIC_CPU) {
      __ membar(); // To be safe. Unsafe semantics are unclear.
    } else {
      __ membar_release();
    }
  
    __ xadd(addr, value.result(), result, tmp);
  
!   if (SUPPORT_IRIW_FOR_NOT_MULTI_COPY_ATOMIC_CPU) {
      __ membar_acquire();
    } else {
      __ membar();
    }
    return result;