Refactor optimized in hydrogen only runtime functions.

test/mjsunit/regress/regress-319722-ArrayBuffer.js

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 // Flags: --nostress-opt --allow-natives-syntax --mock-arraybuffer-allocator
-var maxSize = %MaxSmi() + 1;
+var maxSize = %_MaxSmi() + 1;
 var ab;
 
 // Allocate the largest ArrayBuffer we can on this architecture.
 for (k = 8; k >= 1 && ab == null; k = k/2) {
   try {
     ab = new ArrayBuffer(maxSize * k);
   } catch (e) {
     ab = null;
   }
 }
 
 assertTrue(ab != null);
 
 function TestArray(constr) {
   assertThrows(function() {
     new constr(ab, 0, maxSize);
   }, RangeError);
 }
 
 TestArray(Uint8Array);
 TestArray(Int8Array);
 TestArray(Uint16Array);
 TestArray(Int16Array);
 TestArray(Uint32Array);
 TestArray(Int32Array);
 TestArray(Float32Array);
 TestArray(Float64Array);
 TestArray(Uint8ClampedArray);