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      1 // Copyright 2014 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "src/compiler/instruction-selector-unittest.h"
      6 
      7 namespace v8 {
      8 namespace internal {
      9 namespace compiler {
     10 
     11 // -----------------------------------------------------------------------------
     12 // Conversions.
     13 
     14 
     15 TEST_F(InstructionSelectorTest, ChangeInt32ToInt64WithParameter) {
     16   StreamBuilder m(this, kMachInt64, kMachInt32);
     17   m.Return(m.ChangeInt32ToInt64(m.Parameter(0)));
     18   Stream s = m.Build();
     19   ASSERT_EQ(1U, s.size());
     20   EXPECT_EQ(kX64Movsxlq, s[0]->arch_opcode());
     21 }
     22 
     23 
     24 TEST_F(InstructionSelectorTest, ChangeUint32ToUint64WithParameter) {
     25   StreamBuilder m(this, kMachUint64, kMachUint32);
     26   m.Return(m.ChangeUint32ToUint64(m.Parameter(0)));
     27   Stream s = m.Build();
     28   ASSERT_EQ(1U, s.size());
     29   EXPECT_EQ(kX64Movl, s[0]->arch_opcode());
     30 }
     31 
     32 
     33 TEST_F(InstructionSelectorTest, TruncateInt64ToInt32WithParameter) {
     34   StreamBuilder m(this, kMachInt32, kMachInt64);
     35   m.Return(m.TruncateInt64ToInt32(m.Parameter(0)));
     36   Stream s = m.Build();
     37   ASSERT_EQ(1U, s.size());
     38   EXPECT_EQ(kX64Movl, s[0]->arch_opcode());
     39 }
     40 
     41 
     42 // -----------------------------------------------------------------------------
     43 // Loads and stores
     44 
     45 namespace {
     46 
     47 struct MemoryAccess {
     48   MachineType type;
     49   ArchOpcode load_opcode;
     50   ArchOpcode store_opcode;
     51 };
     52 
     53 
     54 std::ostream& operator<<(std::ostream& os, const MemoryAccess& memacc) {
     55   OStringStream ost;
     56   ost << memacc.type;
     57   return os << ost.c_str();
     58 }
     59 
     60 
     61 static const MemoryAccess kMemoryAccesses[] = {
     62     {kMachInt8, kX64Movsxbl, kX64Movb},
     63     {kMachUint8, kX64Movzxbl, kX64Movb},
     64     {kMachInt16, kX64Movsxwl, kX64Movw},
     65     {kMachUint16, kX64Movzxwl, kX64Movw},
     66     {kMachInt32, kX64Movl, kX64Movl},
     67     {kMachUint32, kX64Movl, kX64Movl},
     68     {kMachInt64, kX64Movq, kX64Movq},
     69     {kMachUint64, kX64Movq, kX64Movq},
     70     {kMachFloat32, kX64Movss, kX64Movss},
     71     {kMachFloat64, kX64Movsd, kX64Movsd}};
     72 
     73 }  // namespace
     74 
     75 
     76 typedef InstructionSelectorTestWithParam<MemoryAccess>
     77     InstructionSelectorMemoryAccessTest;
     78 
     79 
     80 TEST_P(InstructionSelectorMemoryAccessTest, LoadWithParameters) {
     81   const MemoryAccess memacc = GetParam();
     82   StreamBuilder m(this, memacc.type, kMachPtr, kMachInt32);
     83   m.Return(m.Load(memacc.type, m.Parameter(0), m.Parameter(1)));
     84   Stream s = m.Build();
     85   ASSERT_EQ(1U, s.size());
     86   EXPECT_EQ(memacc.load_opcode, s[0]->arch_opcode());
     87   EXPECT_EQ(2U, s[0]->InputCount());
     88   EXPECT_EQ(1U, s[0]->OutputCount());
     89 }
     90 
     91 
     92 TEST_P(InstructionSelectorMemoryAccessTest, StoreWithParameters) {
     93   const MemoryAccess memacc = GetParam();
     94   StreamBuilder m(this, kMachInt32, kMachPtr, kMachInt32, memacc.type);
     95   m.Store(memacc.type, m.Parameter(0), m.Parameter(1), m.Parameter(2));
     96   m.Return(m.Int32Constant(0));
     97   Stream s = m.Build();
     98   ASSERT_EQ(1U, s.size());
     99   EXPECT_EQ(memacc.store_opcode, s[0]->arch_opcode());
    100   EXPECT_EQ(3U, s[0]->InputCount());
    101   EXPECT_EQ(0U, s[0]->OutputCount());
    102 }
    103 
    104 
    105 INSTANTIATE_TEST_CASE_P(InstructionSelectorTest,
    106                         InstructionSelectorMemoryAccessTest,
    107                         ::testing::ValuesIn(kMemoryAccesses));
    108 
    109 }  // namespace compiler
    110 }  // namespace internal
    111 }  // namespace v8
    112