src/share/vm/opto/node.cpp

*** 1115,1126 ****
    Node* n = unique_out();
    int op  = Opcode();
    if (this->is_Store()) {
      // Condition for back-to-back stores folding.
      return n->Opcode() == op && n->in(MemNode::Memory) == this;
!   } else if (this->is_Load()) {
!     // Condition for removing an unused LoadNode from the MemBarAcquire precedence input
      return n->Opcode() == Op_MemBarAcquire;
    } else if (op == Op_AddL) {
      // Condition for convL2I(addL(x,y)) ==> addI(convL2I(x),convL2I(y))
      return n->Opcode() == Op_ConvL2I && n->in(1) == this;
    } else if (op == Op_SubI || op == Op_SubL) {
--- 1115,1126 ----
    Node* n = unique_out();
    int op  = Opcode();
    if (this->is_Store()) {
      // Condition for back-to-back stores folding.
      return n->Opcode() == op && n->in(MemNode::Memory) == this;
!   } else if (this->is_Load() || this->is_DecodeN()) {
!     // Condition for removing an unused LoadNode or DecodeNNode from the MemBarAcquire precedence input
      return n->Opcode() == Op_MemBarAcquire;
    } else if (op == Op_AddL) {
      // Condition for convL2I(addL(x,y)) ==> addI(convL2I(x),convL2I(y))
      return n->Opcode() == Op_ConvL2I && n->in(1) == this;
    } else if (op == Op_SubI || op == Op_SubL) {