[wasm] Experimental: Add support for multiple non-homogeneous tables

src/wasm/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 "src/wasm/wasm-interpreter.h"
 #include "src/wasm/ast-decoder.h"
 #include "src/wasm/decoder.h"
 #include "src/wasm/wasm-external-refs.h"
 #include "src/wasm/wasm-module.h"
 
@@ skipping 1379 matching lines @@
           DoCall(target, &pc, pc + 1 + operand.length, &limit);
           code = target;
           decoder.Reset(code->start, code->end);
           continue;
         }
         case kExprCallIndirect: {
           CallIndirectOperand operand(&decoder, code->at(pc));
           size_t index = stack_.size() - operand.arity - 1;
           DCHECK_LT(index, stack_.size());
           uint32_t entry_index = stack_[index].to<uint32_t>();
-          // Assume only one table for now.
-          DCHECK_LE(module()->function_tables.size(), 1u);
-          InterpreterCode* target = codemap()->GetIndirectCode(0, entry_index);
+          InterpreterCode* target =
+              codemap()->GetIndirectCode(operand.table_index, entry_index);
           if (target == nullptr) {
             return DoTrap(kTrapFuncInvalid, pc);
-          } else if (target->function->sig_index != operand.index) {
-            return DoTrap(kTrapFuncSigMismatch, pc);
           }
 
           DoCall(target, &pc, pc + 1 + operand.length, &limit);
           code = target;
           decoder.Reset(code->start, code->end);
           continue;
         }
         case kExprCallImport: {
           UNIMPLEMENTED();
           break;
@@ skipping 403 matching lines @@
 
 ControlTransferMap WasmInterpreter::ComputeControlTransfersForTesting(
     Zone* zone, const byte* start, const byte* end) {
   ControlTransfers targets(zone, 0, start, end);
   return targets.map_;
 }
 
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8