[ignition] Fix more -Wsign-compare warnings.

test/unittests/interpreter/bytecode-array-iterator-unittest.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/interpreter/bytecode-array-builder.h"
 #include "src/interpreter/bytecode-array-iterator.h"
 #include "test/unittests/test-utils.h"
 
@@ skipping 211 matching lines @@
   CHECK(!iterator.done());
   offset += Bytecodes::Size(Bytecode::kStar, OperandScale::kSingle);
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kCallRuntimeForPair);
   CHECK_EQ(iterator.current_offset(), offset);
   CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK_EQ(iterator.GetRuntimeIdOperand(0), Runtime::kLoadLookupSlotForCall);
   CHECK_EQ(iterator.GetRegisterOperand(1).index(), param.index());
   CHECK_EQ(iterator.GetRegisterOperandRange(1), 1);
-  CHECK_EQ(iterator.GetRegisterCountOperand(2), 1);
+  CHECK_EQ(iterator.GetRegisterCountOperand(2), 1u);
   CHECK_EQ(iterator.GetRegisterOperand(3).index(), reg_0.index());
   CHECK_EQ(iterator.GetRegisterOperandRange(3), 2);
   CHECK(!iterator.done());
   offset +=
       Bytecodes::Size(Bytecode::kCallRuntimeForPair, OperandScale::kSingle);
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kForInPrepare);
   CHECK_EQ(iterator.current_offset(), offset);
   CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK_EQ(iterator.GetRegisterOperand(0).index(), reg_0.index());
   CHECK_EQ(iterator.GetRegisterOperandRange(0), 1);
   CHECK_EQ(iterator.GetRegisterOperand(1).index(), reg_0.index());
   CHECK_EQ(iterator.GetRegisterOperandRange(1), 3);
   CHECK(!iterator.done());
   offset += Bytecodes::Size(Bytecode::kForInPrepare, OperandScale::kSingle);
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kCallRuntime);
   CHECK_EQ(iterator.current_offset(), offset);
   CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK_EQ(iterator.GetRuntimeIdOperand(0), Runtime::kLoadIC_Miss);
   CHECK_EQ(iterator.GetRegisterOperand(1).index(), reg_0.index());
-  CHECK_EQ(iterator.GetRegisterCountOperand(2), 1);
+  CHECK_EQ(iterator.GetRegisterCountOperand(2), 1u);
   CHECK(!iterator.done());
   offset += Bytecodes::Size(Bytecode::kCallRuntime, OperandScale::kSingle);
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kDebugger);
   CHECK_EQ(iterator.current_offset(), offset);
   CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK(!iterator.done());
   offset += Bytecodes::Size(Bytecode::kDebugger, OperandScale::kSingle);
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kLdaGlobal);
   CHECK_EQ(iterator.current_offset(), offset);
   CHECK_EQ(iterator.current_operand_scale(), OperandScale::kQuadruple);
   CHECK_EQ(iterator.current_bytecode_size(), 6);
-  CHECK_EQ(iterator.GetIndexOperand(0), 0x10000000);
+  CHECK_EQ(iterator.GetIndexOperand(0), 0x10000000u);
   offset += Bytecodes::Size(Bytecode::kLdaGlobal, OperandScale::kQuadruple) +
             kPrefixByteSize;
   iterator.Advance();
 
   CHECK_EQ(iterator.current_bytecode(), Bytecode::kReturn);
   CHECK_EQ(iterator.current_offset(), offset);
   CHECK_EQ(iterator.current_operand_scale(), OperandScale::kSingle);
   CHECK(!iterator.done());
   iterator.Advance();
   CHECK(iterator.done());
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8