A64: Implement LModI for ARM A64.

src/a64/lithium-a64.h

Index: src/a64/lithium-a64.h
diff --git a/src/a64/lithium-a64.h b/src/a64/lithium-a64.h
index 84659552e9851b859bd01c8330046193853ab1a5..8eb5167e2628ff5834486a32e9972c46cdbf341c 100644
--- a/src/a64/lithium-a64.h
+++ b/src/a64/lithium-a64.h
@@ -148,6 +148,7 @@ class LCodeGen;
   V(MathSin)                                    \
   V(MathSqrt)                                   \
   V(MathTan)                                    \
+  V(ModI)                                       \
   V(MulConstI)                                  \
   V(MulI)                                       \
   V(NumberTagD)                                 \
@@ -1926,6 +1927,21 @@ class LMathTan: public LUnaryMathOperation<0> {
 };
 
 
+class LModI: public LTemplateInstruction<1, 2, 0> {
+ public:
+  LModI(LOperand* left, LOperand* right) {
+    inputs_[0] = left;
+    inputs_[1] = right;
+  }
+
+  LOperand* left() { return inputs_[0]; }
+  LOperand* right() { return inputs_[1]; }
+
+  DECLARE_CONCRETE_INSTRUCTION(ModI, "mod-i")
+  DECLARE_HYDROGEN_ACCESSOR(Mod)
+};
+
+
 class LMulConstI: public LTemplateInstruction<1, 2, 0> {
  public:
   LMulConstI(LOperand* left, LConstantOperand* right) {