*** old/graal/com.oracle.graal.compiler.amd64/src/com/oracle/graal/compiler/amd64/AMD64LIRGenerator.java	Fri Nov 14 23:17:58 2014
--- new/graal/com.oracle.graal.compiler.amd64/src/com/oracle/graal/compiler/amd64/AMD64LIRGenerator.java	Fri Nov 14 23:17:58 2014

*** 1002,1011 ****
--- 1002,1031 ----
              append(new AMD64BitManipulationOp(LBSR, result, asAllocatable(value)));
          }
          return result;
      }
  
+     public Value emitCountLeadingZeros(Value value) {
+         Variable result = newVariable(LIRKind.derive(value).changeType(Kind.Int));
+         if (value.getKind().getStackKind() == Kind.Int) {
+             append(new AMD64BitManipulationOp(ILZCNT, result, asAllocatable(value)));
+         } else {
+             append(new AMD64BitManipulationOp(LLZCNT, result, asAllocatable(value)));
+         }
+         return result;
+     }
+ 
+     public Value emitCountTrailingZeros(Value value) {
+         Variable result = newVariable(LIRKind.derive(value).changeType(Kind.Int));
+         if (value.getKind().getStackKind() == Kind.Int) {
+             append(new AMD64BitManipulationOp(ITZCNT, result, asAllocatable(value)));
+         } else {
+             append(new AMD64BitManipulationOp(LTZCNT, result, asAllocatable(value)));
+         }
+         return result;
+     }
+ 
      @Override
      public Value emitMathAbs(Value input) {
          Variable result = newVariable(LIRKind.derive(input));
          switch (input.getKind()) {
              case Float: