[Interpreter] Inline Inc/Dec code stubs into bytecode handlers.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 3fb9edd1956636eded902db8f4b55dfbd6c9a98d..7bccaa9c12ba8979cb4c4f234091afcf8b31c40e 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -414,6 +414,17 @@ class CodeStub BASE_EMBEDDED {
   }                                                                            \
   DEFINE_CODE_STUB(NAME, SUPER)
 
+#define DEFINE_TURBOFAN_UNARY_OP_CODE_STUB(NAME, SUPER)                \
+ public:                                                               \
+  static compiler::Node* Generate(CodeStubAssembler* assembler,        \
+                                  compiler::Node* value,               \
+                                  compiler::Node* context);            \
+  void GenerateAssembly(CodeStubAssembler* assembler) const override { \
+    assembler->Return(Generate(assembler, assembler->Parameter(0),     \
+                               assembler->Parameter(1)));              \
+  }                                                                    \
+  DEFINE_CODE_STUB(NAME, SUPER)
+
 #define DEFINE_HANDLER_CODE_STUB(NAME, SUPER) \
  public:                                      \
   Handle<Code> GenerateCode() override;       \
@@ -782,7 +793,7 @@ class IncStub final : public TurboFanCodeStub {
   explicit IncStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(CountOp);
-  DEFINE_TURBOFAN_CODE_STUB(Inc, TurboFanCodeStub);
+  DEFINE_TURBOFAN_UNARY_OP_CODE_STUB(Inc, TurboFanCodeStub);
 };
 
 class DecStub final : public TurboFanCodeStub {
@@ -790,7 +801,7 @@ class DecStub final : public TurboFanCodeStub {
   explicit DecStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(CountOp);
-  DEFINE_TURBOFAN_CODE_STUB(Dec, TurboFanCodeStub);
+  DEFINE_TURBOFAN_UNARY_OP_CODE_STUB(Dec, TurboFanCodeStub);
 };
 
 class InstanceOfStub final : public TurboFanCodeStub {