[interpreter] Bytecode register optimizer.

test/unittests/interpreter/bytecodes-unittest.cc

Index: test/unittests/interpreter/bytecodes-unittest.cc
diff --git a/test/unittests/interpreter/bytecodes-unittest.cc b/test/unittests/interpreter/bytecodes-unittest.cc
index 6c7278e9be83b4e5704b94280c0d907a76d23927..9125175179e97e142b48f8063ece5fb538fbf4fb 100644
--- a/test/unittests/interpreter/bytecodes-unittest.cc
+++ b/test/unittests/interpreter/bytecodes-unittest.cc
@@ -332,6 +332,35 @@ TEST(OperandScale, PrefixesRequired) {
         Bytecode::kExtraWide);
 }
 
+TEST(Bytecodes, OperandSizesToScale) {
+  CHECK_EQ(Bytecodes::OperandSizesToScale(OperandSize::kByte),
+           OperandScale::kSingle);
+  CHECK_EQ(Bytecodes::OperandSizesToScale(OperandSize::kShort),
+           OperandScale::kDouble);
+  CHECK_EQ(Bytecodes::OperandSizesToScale(OperandSize::kQuad),
+           OperandScale::kQuadruple);
+  CHECK_EQ(
+      Bytecodes::OperandSizesToScale(OperandSize::kShort, OperandSize::kShort,
+                                     OperandSize::kShort, OperandSize::kShort),
+      OperandScale::kDouble);
+  CHECK_EQ(
+      Bytecodes::OperandSizesToScale(OperandSize::kQuad, OperandSize::kShort,
+                                     OperandSize::kShort, OperandSize::kShort),
+      OperandScale::kQuadruple);
+  CHECK_EQ(
+      Bytecodes::OperandSizesToScale(OperandSize::kShort, OperandSize::kQuad,
+                                     OperandSize::kShort, OperandSize::kShort),
+      OperandScale::kQuadruple);
+  CHECK_EQ(
+      Bytecodes::OperandSizesToScale(OperandSize::kShort, OperandSize::kShort,
+                                     OperandSize::kQuad, OperandSize::kShort),
+      OperandScale::kQuadruple);
+  CHECK_EQ(
+      Bytecodes::OperandSizesToScale(OperandSize::kShort, OperandSize::kShort,
+                                     OperandSize::kShort, OperandSize::kQuad),
+      OperandScale::kQuadruple);
+}
+
 TEST(AccumulatorUse, LogicalOperators) {
   CHECK_EQ(AccumulatorUse::kNone | AccumulatorUse::kRead,
            AccumulatorUse::kRead);
@@ -366,7 +395,6 @@ TEST(AccumulatorUse, AccumulatorUseToString) {
   names.insert(Bytecodes::AccumulatorUseToString(AccumulatorUse::kReadWrite));
   CHECK_EQ(names.size(), 4);
 }
-
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8