Version 3.2.2. Fixed a number of crash and correctness bugs. Improved Cranksh...

src/hydrogen-instructions.h

Index: src/hydrogen-instructions.h
===================================================================
--- src/hydrogen-instructions.h	(revision 7161)
+++ src/hydrogen-instructions.h	(working copy)
@@ -151,6 +151,7 @@
   V(StoreNamedField)                           \
   V(StoreNamedGeneric)                         \
   V(StringCharCodeAt)                          \
+  V(StringCharFromCode)                        \
   V(StringLength)                              \
   V(Sub)                                       \
   V(Test)                                      \
@@ -2567,6 +2568,16 @@
     SetFlag(kCanBeDivByZero);
   }
 
+  bool HasPowerOf2Divisor() {
+    if (right()->IsConstant() &&
+        HConstant::cast(right())->HasInteger32Value()) {
+      int32_t value = HConstant::cast(right())->Integer32Value();
+      return value != 0 && (IsPowerOf2(value) || IsPowerOf2(-value));
+    }
+
+    return false;
+  }
+
   virtual HValue* EnsureAndPropagateNotMinusZero(BitVector* visited);
 
   DECLARE_CONCRETE_INSTRUCTION(Mod, "mod")
@@ -3258,6 +3269,23 @@
 };
 
 
+class HStringCharFromCode: public HUnaryOperation {
+ public:
+  explicit HStringCharFromCode(HValue* char_code) : HUnaryOperation(char_code) {
+    set_representation(Representation::Tagged());
+    SetFlag(kUseGVN);
+  }
+
+  virtual Representation RequiredInputRepresentation(int index) const {
+    return Representation::Integer32();
+  }
+
+  virtual bool DataEquals(HValue* other) { return true; }
+
+  DECLARE_CONCRETE_INSTRUCTION(StringCharFromCode, "string_char_from_code")
+};
+
+
 class HStringLength: public HUnaryOperation {
  public:
   explicit HStringLength(HValue* string) : HUnaryOperation(string) {