[arm] Share constant pool entries in snapshot.

src/interpreter/setup-interpreter-internal.cc

Index: src/interpreter/setup-interpreter-internal.cc
diff --git a/src/interpreter/setup-interpreter-internal.cc b/src/interpreter/setup-interpreter-internal.cc
index 9adf70dffa8ad964ced0a3d5aeac80106c901f08..d6450f236fdbfce642bcd2d362a355a186bd4eba 100644
--- a/src/interpreter/setup-interpreter-internal.cc
+++ b/src/interpreter/setup-interpreter-internal.cc
@@ -18,6 +18,7 @@ namespace interpreter {
 void SetupInterpreter::InstallBytecodeHandlers(Interpreter* interpreter) {
   DCHECK(!interpreter->IsDispatchTableInitialized());
   HandleScope scope(interpreter->isolate_);
+  CanonicalHandleScope canonical(interpreter->isolate_);

[rmcilroy, 2017/05/16 09:04:05]

Why is this needed? Could you add a comment please.

   Address* dispatch_table = interpreter->dispatch_table_;
 
   // Generate bytecode handlers for all bytecodes and scales.