[turbofan] Add backend support for signed loads.

test/compiler-unittests/ia32/instruction-selector-ia32-unittest.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/compiler-unittests/instruction-selector-unittest.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 55 matching lines @@
     StreamBuilder m(this, kMachInt32, kMachInt32);
     m.Return(m.Int32Sub(m.Parameter(0), m.Int32Constant(imm)));
     Stream s = m.Build();
     ASSERT_EQ(1U, s.size());
     EXPECT_EQ(kIA32Sub, s[0]->arch_opcode());
     ASSERT_EQ(2U, s[0]->InputCount());
     EXPECT_EQ(imm, s.ToInt32(s[0]->InputAt(1)));
   }
 }
 
+
+// -----------------------------------------------------------------------------
+// Loads and stores
+
+namespace {
+
+struct MemoryAccess {
+  MachineType type;
+  ArchOpcode load_opcode;
+  ArchOpcode store_opcode;
+};
+
+
+std::ostream& operator<<(std::ostream& os, const MemoryAccess& memacc) {
+  OStringStream ost;
+  ost << memacc.type;
+  return os << ost.c_str();
+}
+
+
+static const MemoryAccess kMemoryAccesses[] = {
+    {kMachInt8, kIA32Movsxbl, kIA32Movb},
+    {kMachUint8, kIA32Movzxbl, kIA32Movb},
+    {kMachInt16, kIA32Movsxwl, kIA32Movw},
+    {kMachUint16, kIA32Movzxwl, kIA32Movw},
+    {kMachInt32, kIA32Movl, kIA32Movl},
+    {kMachUint32, kIA32Movl, kIA32Movl},
+    {kMachFloat64, kIA32Movsd, kIA32Movsd}};
+
+}  // namespace
+
+
+typedef InstructionSelectorTestWithParam<MemoryAccess>
+    InstructionSelectorMemoryAccessTest;
+
+
+TEST_P(InstructionSelectorMemoryAccessTest, LoadWithParameters) {
+  const MemoryAccess memacc = GetParam();
+  StreamBuilder m(this, memacc.type, kMachPtr, kMachInt32);
+  m.Return(m.Load(memacc.type, m.Parameter(0), m.Parameter(1)));
+  Stream s = m.Build();
+  ASSERT_EQ(1U, s.size());
+  EXPECT_EQ(memacc.load_opcode, s[0]->arch_opcode());
+  EXPECT_EQ(2U, s[0]->InputCount());
+  EXPECT_EQ(1U, s[0]->OutputCount());
+}
+
+
+TEST_P(InstructionSelectorMemoryAccessTest, LoadWithImmediateBase) {
+  const MemoryAccess memacc = GetParam();
+  TRACED_FOREACH(int32_t, base, kImmediates) {
+    StreamBuilder m(this, memacc.type, kMachPtr);
+    m.Return(m.Load(memacc.type, m.Int32Constant(base), m.Parameter(0)));
+    Stream s = m.Build();
+    ASSERT_EQ(1U, s.size());
+    EXPECT_EQ(memacc.load_opcode, s[0]->arch_opcode());
+    ASSERT_EQ(2U, s[0]->InputCount());
+    ASSERT_EQ(InstructionOperand::IMMEDIATE, s[0]->InputAt(1)->kind());
+    EXPECT_EQ(base, s.ToInt32(s[0]->InputAt(1)));
+    EXPECT_EQ(1U, s[0]->OutputCount());
+  }
+}
+
+
+TEST_P(InstructionSelectorMemoryAccessTest, LoadWithImmediateIndex) {
+  const MemoryAccess memacc = GetParam();
+  TRACED_FOREACH(int32_t, index, kImmediates) {
+    StreamBuilder m(this, memacc.type, kMachPtr);
+    m.Return(m.Load(memacc.type, m.Parameter(0), m.Int32Constant(index)));
+    Stream s = m.Build();
+    ASSERT_EQ(1U, s.size());
+    EXPECT_EQ(memacc.load_opcode, s[0]->arch_opcode());
+    ASSERT_EQ(2U, s[0]->InputCount());
+    ASSERT_EQ(InstructionOperand::IMMEDIATE, s[0]->InputAt(1)->kind());
+    EXPECT_EQ(index, s.ToInt32(s[0]->InputAt(1)));
+    EXPECT_EQ(1U, s[0]->OutputCount());
+  }
+}
+
+
+TEST_P(InstructionSelectorMemoryAccessTest, StoreWithParameters) {
+  const MemoryAccess memacc = GetParam();
+  StreamBuilder m(this, kMachInt32, kMachPtr, kMachInt32, memacc.type);
+  m.Store(memacc.type, m.Parameter(0), m.Parameter(1), m.Parameter(2));
+  m.Return(m.Int32Constant(0));
+  Stream s = m.Build();
+  ASSERT_EQ(1U, s.size());
+  EXPECT_EQ(memacc.store_opcode, s[0]->arch_opcode());
+  EXPECT_EQ(3U, s[0]->InputCount());
+  EXPECT_EQ(0U, s[0]->OutputCount());
+}
+
+
+TEST_P(InstructionSelectorMemoryAccessTest, StoreWithImmediateBase) {
+  const MemoryAccess memacc = GetParam();
+  TRACED_FOREACH(int32_t, base, kImmediates) {
+    StreamBuilder m(this, kMachInt32, kMachInt32, memacc.type);
+    m.Store(memacc.type, m.Int32Constant(base), m.Parameter(0), m.Parameter(1));
+    m.Return(m.Int32Constant(0));
+    Stream s = m.Build();
+    ASSERT_EQ(1U, s.size());
+    EXPECT_EQ(memacc.store_opcode, s[0]->arch_opcode());
+    ASSERT_EQ(3U, s[0]->InputCount());
+    ASSERT_EQ(InstructionOperand::IMMEDIATE, s[0]->InputAt(1)->kind());
+    EXPECT_EQ(base, s.ToInt32(s[0]->InputAt(1)));
+    EXPECT_EQ(0U, s[0]->OutputCount());
+  }
+}
+
+
+TEST_P(InstructionSelectorMemoryAccessTest, StoreWithImmediateIndex) {
+  const MemoryAccess memacc = GetParam();
+  TRACED_FOREACH(int32_t, index, kImmediates) {
+    StreamBuilder m(this, kMachInt32, kMachPtr, memacc.type);
+    m.Store(memacc.type, m.Parameter(0), m.Int32Constant(index),
+            m.Parameter(1));
+    m.Return(m.Int32Constant(0));
+    Stream s = m.Build();
+    ASSERT_EQ(1U, s.size());
+    EXPECT_EQ(memacc.store_opcode, s[0]->arch_opcode());
+    ASSERT_EQ(3U, s[0]->InputCount());
+    ASSERT_EQ(InstructionOperand::IMMEDIATE, s[0]->InputAt(1)->kind());
+    EXPECT_EQ(index, s.ToInt32(s[0]->InputAt(1)));
+    EXPECT_EQ(0U, s[0]->OutputCount());
+  }
+}
+
+
+INSTANTIATE_TEST_CASE_P(InstructionSelectorTest,
+                        InstructionSelectorMemoryAccessTest,
+                        ::testing::ValuesIn(kMemoryAccesses));
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8