[Interpreter] Add CallRuntime support to the interpreter.

test/cctest/interpreter/test-bytecode-generator.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/compiler.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "src/interpreter/bytecode-generator.h"
 #include "src/interpreter/interpreter.h"
 #include "test/cctest/cctest.h"
 
 namespace v8 {
 namespace internal {
 namespace interpreter {
 
 class BytecodeGeneratorHelper {
  public:
   const char* kFunctionName = "f";
 
   const int kLastParamIndex =
       -InterpreterFrameConstants::kLastParamFromRegisterPointer / kPointerSize;
 
   BytecodeGeneratorHelper() {
     i::FLAG_vector_stores = true;
     i::FLAG_ignition = true;
     i::FLAG_ignition_filter = StrDup(kFunctionName);
     i::FLAG_always_opt = false;
+    i::FLAG_allow_natives_syntax = true;
     CcTest::i_isolate()->interpreter()->Initialize();
   }
 
 
   Factory* factory() { return CcTest::i_isolate()->factory(); }
 
 
   Handle<BytecodeArray> MakeBytecode(const char* script,
                                      const char* function_name) {
     CompileRun(script);
@@ skipping 17 matching lines @@
     return MakeBytecode(program.start(), kFunctionName);
   }
 };
 
 
 // Helper macros for handcrafting bytecode sequences.
 #define B(x) static_cast<uint8_t>(Bytecode::k##x)
 #define U8(x) static_cast<uint8_t>((x) & 0xff)
 #define R(x) static_cast<uint8_t>(-(x) & 0xff)
 #define _ static_cast<uint8_t>(0x5a)
-
+#if defined(V8_TARGET_LITTLE_ENDIAN)
+#define U16(x) static_cast<uint8_t>((x) & 0xff),                    \
+               static_cast<uint8_t>(((x) >> kBitsPerByte) & 0xff)
+#elif defined(V8_TARGET_BIG_ENDIAN)
+#define U16(x) static_cast<uint8_t>(((x) >> kBitsPerByte) & 0xff),   \
+               static_cast<uint8_t>((x) & 0xff)
+#else
+#error Unknown byte ordering
+#endif
 
 // Structure for containing expected bytecode snippets.
 template<typename T>
 struct ExpectedSnippet {
   const char* code_snippet;
   int frame_size;
   int parameter_count;
   int bytecode_length;
   const uint8_t bytecode[512];
   int constant_count;
@@ skipping 589 matching lines @@
         helper.MakeBytecode(snippets[i].code_snippet, "f");
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 
 TEST(LoadGlobal) {
   InitializedHandleScope handle_scope;
   BytecodeGeneratorHelper helper;
 
-  ExpectedSnippet<const char*> snippets[] = {
-      {"var a = 1;\nfunction f() { return a; }\nf()",
-       0, 1, 3,
-       {
-          B(LdaGlobal), _,
-          B(Return)
-       },
+  ExpectedSnippet<int> snippets[] = {
+      {
+          "var a = 1;\nfunction f() { return a; }\nf()",
+          0,
+          1,
+          3,
+          {
+              B(LdaGlobal), _,  //
+              B(Return)         //
+          },
       },
-      {"function t() { }\nfunction f() { return t; }\nf()",
-       0, 1, 3,
-       {
-          B(LdaGlobal), _,
-          B(Return)
-       },
+      {
+          "function t() { }\nfunction f() { return t; }\nf()",
+          0,
+          1,
+          3,
+          {
+              B(LdaGlobal), _,  //
+              B(Return)         //
+          },
       },
   };
 
   for (size_t i = 0; i < arraysize(snippets); i++) {
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecode(snippets[i].code_snippet, "f");
-    bytecode_array->Print();
     CheckBytecodeArrayEqual(snippets[i], bytecode_array, true);
   }
 }
 
 
 TEST(CallGlobal) {
   InitializedHandleScope handle_scope;
   BytecodeGeneratorHelper helper;
 
-  ExpectedSnippet<const char*> snippets[] = {
-      {"function t() { }\nfunction f() { return t(); }\nf()",
-       2 * kPointerSize, 1, 12,
-       {
-          B(LdaUndefined),
-          B(Star), R(1),
-          B(LdaGlobal), _,
-          B(Star), R(0),
-          B(Call), R(0), R(1), U8(0),
-          B(Return)
-       },
+  ExpectedSnippet<int> snippets[] = {
+      {
+          "function t() { }\nfunction f() { return t(); }\nf()",
+          2 * kPointerSize,
+          1,
+          12,
+          {
+              B(LdaUndefined),             //
+              B(Star), R(1),               //
+              B(LdaGlobal), _,             //
+              B(Star), R(0),               //
+              B(Call), R(0), R(1), U8(0),  //
+              B(Return)                    //
+          },
       },
-      {"function t(a, b, c) { }\nfunction f() { return t(1, 2, 3); }\nf()",
-       5 * kPointerSize, 1, 24,
-       {
-          B(LdaUndefined),
-          B(Star), R(1),
-          B(LdaGlobal), _,
-          B(Star), R(0),
-          B(LdaSmi8), U8(1),
-          B(Star), R(2),
-          B(LdaSmi8), U8(2),
-          B(Star), R(3),
-          B(LdaSmi8), U8(3),
-          B(Star), R(4),
-          B(Call), R(0), R(1), U8(3),
-          B(Return)
-       },
+      {
+          "function t(a, b, c) { }\nfunction f() { return t(1, 2, 3); }\nf()",
+          5 * kPointerSize,
+          1,
+          24,
+          {
+              B(LdaUndefined),             //
+              B(Star), R(1),               //
+              B(LdaGlobal), _,             //
+              B(Star), R(0),               //
+              B(LdaSmi8), U8(1),           //
+              B(Star), R(2),               //
+              B(LdaSmi8), U8(2),           //
+              B(Star), R(3),               //
+              B(LdaSmi8), U8(3),           //
+              B(Star), R(4),               //
+              B(Call), R(0), R(1), U8(3),  //
+              B(Return)                    //
+          },
       },
   };
 
+  size_t num_snippets = sizeof(snippets) / sizeof(snippets[0]);
+  for (size_t i = 0; i < num_snippets; i++) {
+    Handle<BytecodeArray> bytecode_array =
+        helper.MakeBytecode(snippets[i].code_snippet, "f");
+    CheckBytecodeArrayEqual(snippets[i], bytecode_array, true);
+  }
+}
+
+
+TEST(CallRuntime) {
+  InitializedHandleScope handle_scope;
+  BytecodeGeneratorHelper helper;
+
+  ExpectedSnippet<int> snippets[] = {
+      {
+          "function f() { %TheHole() }\nf()",
+          1 * kPointerSize,
+          1,
+          7,
+          {
+              B(CallRuntime), U16(Runtime::kTheHole), R(0), U8(0),  //
+              B(LdaUndefined),                                      //
+              B(Return)                                             //
+          },
+      },
+      {
+          "function f(a) { return %IsArray(a) }\nf(undefined)",
+          1 * kPointerSize,
+          2,
+          10,
+          {
+              B(Ldar), R(helper.kLastParamIndex),                   //
+              B(Star), R(0),                                        //
+              B(CallRuntime), U16(Runtime::kIsArray), R(0), U8(1),  //
+              B(Return)                                             //
+          },
+      },
+      {
+          "function f() { return %Add(1, 2) }\nf()",
+          2 * kPointerSize,
+          1,
+          14,
+          {
+              B(LdaSmi8), U8(1),                                //
+              B(Star), R(0),                                    //
+              B(LdaSmi8), U8(2),                                //
+              B(Star), R(1),                                    //
+              B(CallRuntime), U16(Runtime::kAdd), R(0), U8(2),  //
+              B(Return)                                         //
+          },
+      },
+  };
+
   for (size_t i = 0; i < arraysize(snippets); i++) {
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecode(snippets[i].code_snippet, "f");
     CheckBytecodeArrayEqual(snippets[i], bytecode_array, true);
   }
 }
 
 
 TEST(IfConditions) {
   InitializedHandleScope handle_scope;
@@ skipping 139 matching lines @@
     Handle<BytecodeArray> bytecode_array =
         helper.MakeBytecodeForFunction(snippets[i].code_snippet);
     CheckBytecodeArrayEqual(snippets[i], bytecode_array);
   }
 }
 
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespance v8