Renaming Unboxed* IL instructions to shorter names.

runtime/vm/intermediate_language.cc

Index: runtime/vm/intermediate_language.cc
===================================================================
--- runtime/vm/intermediate_language.cc	(revision 13224)
+++ runtime/vm/intermediate_language.cc	(working copy)
@@ -1202,31 +1202,37 @@
 }
 
 
-RawAbstractType* UnboxedMintBinaryOpInstr::CompileType() const {
+RawAbstractType* BinaryMintOpInstr::CompileType() const {
   return Type::IntType();
 }
 
 
-intptr_t UnboxedMintBinaryOpInstr::ResultCid() const {
+intptr_t BinaryMintOpInstr::ResultCid() const {
   return kDynamicCid;
 }
 
 
-RawAbstractType* UnboxedMintUnaryOpInstr::CompileType() const {
+RawAbstractType* UnaryMintOpInstr::CompileType() const {
   return Type::IntType();
 }
 
 
-intptr_t UnboxedMintUnaryOpInstr::ResultCid() const {
+intptr_t UnaryMintOpInstr::ResultCid() const {
   return kDynamicCid;
 }
 
 
-RawAbstractType* UnboxedDoubleBinaryOpInstr::CompileType() const {
+RawAbstractType* BinaryDoubleOpInstr::CompileType() const {
   return Type::Double();
 }
 
 
+intptr_t BinaryDoubleOpInstr::ResultCid() const {
+  // The output is not an instance but when it is boxed it becomes double.
+  return kDoubleCid;
+}
+
+
 RawAbstractType* MathSqrtInstr::CompileType() const {
   return Type::Double();
 }