src/hotspot/share/opto/library_call.cpp

*** 306,315 ****
--- 306,317 ----
                                   Node* src_start, Node* ofs, Node* limit);
    Node* get_state_from_sha_object(Node *sha_object);
    Node* get_state_from_sha5_object(Node *sha_object);
    Node* inline_digestBase_implCompressMB_predicate(int predicate);
    bool inline_encodeISOArray();
+   bool inline_setBit();
+   bool inline_clrBit();
    bool inline_updateCRC32();
    bool inline_updateBytesCRC32();
    bool inline_updateByteBufferCRC32();
    Node* get_table_from_crc32c_class(ciInstanceKlass *crc32c_class);
    bool inline_updateBytesCRC32C();
*** 839,848 ****
--- 841,855 ----
  
    case vmIntrinsics::_encodeISOArray:
    case vmIntrinsics::_encodeByteISOArray:
      return inline_encodeISOArray();
  
+   case vmIntrinsics::_setBit:
+     return inline_setBit();
+   case vmIntrinsics::_clrBit:
+     return inline_clrBit();
+ 
    case vmIntrinsics::_updateCRC32:
      return inline_updateCRC32();
    case vmIntrinsics::_updateBytesCRC32:
      return inline_updateBytesCRC32();
    case vmIntrinsics::_updateByteBufferCRC32:
*** 5380,5389 ****
--- 5387,5429 ----
    result = _gvn.transform(new XorINode(result, M1));
    set_result(result);
    return true;
  }
  
+ bool LibraryCallKit::inline_setBit() {
+   Node* bits = argument(0); // type: oop
+   Node* index = argument(1); // type: int
+ 
+   Node* hi = _gvn.transform(new RShiftINode(index, intcon(3)));
+   Node* bit = array_element_address(bits, hi, T_BYTE);
+ 
+   Node* lo = _gvn.transform(new AndINode(index, intcon(7)));
+   Node* value = _gvn.transform(new LShiftINode(intcon(1), lo));
+ 
+   store_to_memory(control(), bit, value, T_BYTE, TypeAryPtr::BYTES, MemNode::unordered,
+                   false, false, false, 1);
+ 
+   return true;
+ }
+ 
+ bool LibraryCallKit::inline_clrBit() {
+   Node* bits = argument(0); // type: oop
+   Node* index = argument(1); // type: int
+ 
+   Node* hi = _gvn.transform(new RShiftINode(index, intcon(3)));
+   Node* bit = array_element_address(bits, hi, T_BYTE);
+ 
+   Node* lo = _gvn.transform(new AndINode(index, intcon(7)));
+   Node* value = _gvn.transform(new LShiftINode(intcon(1), lo));
+   value = _gvn.transform(new XorINode(value, intcon(-1)));
+ 
+   store_to_memory(control(), bit, value, T_BYTE, TypeAryPtr::BYTES, MemNode::unordered,
+                   false, false, false, 0);
+ 
+   return true;
+ }
+ 
  /**
   * Calculate CRC32 for byte[] array.
   * int java.util.zip.CRC32.updateBytes(int crc, byte[] buf, int off, int len)
   */
  bool LibraryCallKit::inline_updateBytesCRC32() {