Simplify dispatch in FullCodeGenerator::VisitCall a bit.

src/arm64/macro-assembler-arm64.h

Index: src/arm64/macro-assembler-arm64.h
diff --git a/src/arm64/macro-assembler-arm64.h b/src/arm64/macro-assembler-arm64.h
index ade2e3605d2a9343637fb2f64d4eebe69e12b681..4525625dcef87844a75281aca2ee1b25e171a683 100644
--- a/src/arm64/macro-assembler-arm64.h
+++ b/src/arm64/macro-assembler-arm64.h
@@ -1461,6 +1461,9 @@ class MacroAssembler : public Assembler {
   // register.
   void LoadElementsKindFromMap(Register result, Register map);
 
+  // Load the value from the root list and push it onto the stack.
+  void PushRoot(Heap::RootListIndex index);
+
   // Compare the object in a register to a value from the root list.
   void CompareRoot(const Register& obj, Heap::RootListIndex index);