[wasm] Implement table.get and table.set in the interpreter

R=mstarzinger@chromium.org

Bug: v8:7581
Change-Id: Ie5372e37acf31cd20f7914423fe4c802b5903b95
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1690944Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62570}

src/wasm/wasm-interpreter.cc

@@ -3180,7 +3180,39 @@ class ThreadImpl {
           len = 1 + imm.length;
           break;
         }
-
+        case kExprTableGet: {
+          TableIndexImmediate<Decoder::kNoValidate> imm(&decoder, code->at(pc));
+          HandleScope handle_scope(isolate_);
+          auto table = handle(
+              WasmTableObject::cast(instance_object_->tables().get(imm.index)),
+              isolate_);
+          uint32_t table_size = table->current_length();
+          uint32_t entry_index = Pop().to<uint32_t>();
+          if (entry_index >= table_size) {
+            return DoTrap(kTrapTableOutOfBounds, pc);
+          }
+          Handle<Object> value =
+              WasmTableObject::Get(isolate_, table, entry_index);
+          Push(WasmValue(value));
+          len = 1 + imm.length;
+          break;
+        }
+        case kExprTableSet: {
+          TableIndexImmediate<Decoder::kNoValidate> imm(&decoder, code->at(pc));
+          HandleScope handle_scope(isolate_);
+          auto table = handle(
+              WasmTableObject::cast(instance_object_->tables().get(imm.index)),
+              isolate_);
+          uint32_t table_size = table->current_length();
+          Handle<Object> value = Pop().to_anyref();
+          uint32_t entry_index = Pop().to<uint32_t>();
+          if (entry_index >= table_size) {
+            return DoTrap(kTrapTableOutOfBounds, pc);
+          }
+          WasmTableObject::Set(isolate_, table, entry_index, value);
+          len = 1 + imm.length;
+          break;
+        }
 #define LOAD_CASE(name, ctype, mtype, rep)                      \
   case kExpr##name: {                                           \
     if (!ExecuteLoad<ctype, mtype>(&decoder, code, pc, len,     \

test/mjsunit/wasm/table-access-interpreter.js

+// Copyright 2019 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.
+
+// Flags: --expose-wasm --experimental-wasm-anyref
+// Flags: --wasm-interpret-all
+
+// This is just a wrapper for an existing reference types test case that runs
+// with the --wasm-interpret-all flag added. If we ever decide to add a test
+// variant for this, then we can remove this file.
+
+load("test/mjsunit/wasm/table-access.js");