src/cpu/ppc/vm/vm_version_ppc.cpp

rev 8574 : 8131048: ppc: implement CRC32 intrinsic

*** 148,161 ****
      AllocatePrefetchStyle = 1; // Fall back if inappropriate.
    }
  
    assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive");
  
!   if (UseCRC32Intrinsics) {
!     if (!FLAG_IS_DEFAULT(UseCRC32Intrinsics))
!       warning("CRC32 intrinsics  are not available on this CPU");
!     FLAG_SET_DEFAULT(UseCRC32Intrinsics, false);
    }
  
    // The AES intrinsic stubs require AES instruction support.
  #if defined(VM_LITTLE_ENDIAN)
    if (has_vcipher()) {
--- 148,163 ----
      AllocatePrefetchStyle = 1; // Fall back if inappropriate.
    }
  
    assert(AllocatePrefetchStyle >= 0, "AllocatePrefetchStyle should be positive");
  
!   // Implementation does not use any of the vector instructions
!   // available with Power8. Their exploitation is still pending.
!   if (!UseCRC32Intrinsics) {
!     if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
!       FLAG_SET_DEFAULT(UseCRC32Intrinsics, true);
!     }
    }
  
    // The AES intrinsic stubs require AES instruction support.
  #if defined(VM_LITTLE_ENDIAN)
    if (has_vcipher()) {