[wasm] Implement GrowMemory in the wasm interpreter

test/cctest/wasm/test-run-wasm-interpreter.cc

 // Copyright 2016 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 <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include <memory>
 
@@ skipping 268 matching lines @@
 
         // Check the thread finished with the right value.
         CHECK_EQ(WasmInterpreter::FINISHED, thread->state());
         uint32_t expected = (*a) & (b);
         CHECK_EQ(expected, thread->GetReturnValue().to<uint32_t>());
       }
     }
   }
 }
 
+TEST(GrowMemory) {
+  TestingModule module(kExecuteInterpreted);
+  WasmRunner<int32_t> r(&module, MachineType::Uint32());
+  module.AddMemory(WasmModule::kPageSize);
+  BUILD(r, WASM_GROW_MEMORY(WASM_GET_LOCAL(0)));
+  CHECK_EQ(1, r.Call(1));
+}
+
+TEST(GrowMemoryPreservesData) {
+  int32_t index = 16;
+  int32_t value = 2335;
+  TestingModule module(kExecuteInterpreted);
+  WasmRunner<int32_t> r(&module, MachineType::Uint32());
+  module.AddMemory(WasmModule::kPageSize);
+  BUILD(r, WASM_BLOCK(WASM_STORE_MEM(MachineType::Int32(), WASM_I32V(index),
+                                     WASM_I32V(value)),
+                      WASM_GROW_MEMORY(WASM_GET_LOCAL(0)),
+                      WASM_LOAD_MEM(MachineType::Int32(), WASM_I32V(index))));
+  CHECK_EQ(value, r.Call(1));
+}
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8