Handle non-power-of-2 divisors in division-like operations

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index 25060018221140df2a8a453fb26fbb7115013f87..c953629846b25ce5393a4d2d5aec87a7fb15bea6 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -1037,6 +1037,21 @@ class NullCallWrapper : public CallWrapper {
   virtual void AfterCall() const { }
 };
 
+
+// The multiplier and shift for signed division via multiplication, see Warren's
+// "Hacker's Delight", chapter 10.
+class MultiplierAndShift {
+ public:
+  explicit MultiplierAndShift(int32_t d);
+  int32_t multiplier() const { return multiplier_; }
+  int32_t shift() const { return shift_; }
+
+ private:
+  int32_t multiplier_;
+  int32_t shift_;
+};
+
+
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_H_