[turbofan] Refactor the InstructionSelector tests.

test/cctest/compiler/test-instruction-selector-ia32.cc

-// Copyright 2014 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 "test/cctest/compiler/instruction-selector-tester.h"
-#include "test/cctest/compiler/value-helper.h"
-
-using namespace v8::internal;
-using namespace v8::internal::compiler;
-
-TEST(InstructionSelectorInt32AddP) {
-  InstructionSelectorTester m;
-  m.Return(m.Int32Add(m.Parameter(0), m.Parameter(1)));
-  m.SelectInstructions();
-  CHECK_EQ(1, m.code.size());
-  CHECK_EQ(kIA32Add, m.code[0]->arch_opcode());
-}
-
-
-TEST(InstructionSelectorInt32AddImm) {
-  FOR_INT32_INPUTS(i) {
-    int32_t imm = *i;
-    {
-      InstructionSelectorTester m;
-      m.Return(m.Int32Add(m.Parameter(0), m.Int32Constant(imm)));
-      m.SelectInstructions();
-      CHECK_EQ(1, m.code.size());
-      CHECK_EQ(kIA32Add, m.code[0]->arch_opcode());
-      CHECK_EQ(2, m.code[0]->InputCount());
-      CHECK_EQ(imm, m.ToInt32(m.code[0]->InputAt(1)));
-    }
-    {
-      InstructionSelectorTester m;
-      m.Return(m.Int32Add(m.Int32Constant(imm), m.Parameter(0)));
-      m.SelectInstructions();
-      CHECK_EQ(1, m.code.size());
-      CHECK_EQ(kIA32Add, m.code[0]->arch_opcode());
-      CHECK_EQ(2, m.code[0]->InputCount());
-      CHECK_EQ(imm, m.ToInt32(m.code[0]->InputAt(1)));
-    }
-  }
-}
-
-
-TEST(InstructionSelectorInt32SubP) {
-  InstructionSelectorTester m;
-  m.Return(m.Int32Sub(m.Parameter(0), m.Parameter(1)));
-  m.SelectInstructions();
-  CHECK_EQ(1, m.code.size());
-  CHECK_EQ(kIA32Sub, m.code[0]->arch_opcode());
-  CHECK_EQ(1, m.code[0]->OutputCount());
-}
-
-
-TEST(InstructionSelectorInt32SubImm) {
-  FOR_INT32_INPUTS(i) {
-    int32_t imm = *i;
-    InstructionSelectorTester m;
-    m.Return(m.Int32Sub(m.Parameter(0), m.Int32Constant(imm)));
-    m.SelectInstructions();
-    CHECK_EQ(1, m.code.size());
-    CHECK_EQ(kIA32Sub, m.code[0]->arch_opcode());
-    CHECK_EQ(2, m.code[0]->InputCount());
-    CHECK_EQ(imm, m.ToInt32(m.code[0]->InputAt(1)));
-  }
-}