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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/js-operator.h"
      6 #include "src/compiler/opcodes.h"
      7 #include "src/compiler/operator.h"
      8 #include "src/compiler/operator-properties.h"
      9 #include "test/unittests/test-utils.h"
     10 
     11 namespace v8 {
     12 namespace internal {
     13 namespace compiler {
     14 
     15 // -----------------------------------------------------------------------------
     16 // Shared operators.
     17 
     18 namespace {
     19 
     20 struct SharedOperator {
     21   const Operator* (JSOperatorBuilder::*constructor)();
     22   IrOpcode::Value opcode;
     23   Operator::Properties properties;
     24   int value_input_count;
     25   int frame_state_input_count;
     26   int effect_input_count;
     27   int control_input_count;
     28   int value_output_count;
     29   int effect_output_count;
     30   int control_output_count;
     31 };
     32 
     33 const SharedOperator kSharedOperators[] = {
     34 #define SHARED(Name, properties, value_input_count, frame_state_input_count, \
     35                effect_input_count, control_input_count, value_output_count,  \
     36                effect_output_count, control_output_count)                    \
     37   {                                                                          \
     38     &JSOperatorBuilder::Name, IrOpcode::kJS##Name, properties,               \
     39         value_input_count, frame_state_input_count, effect_input_count,      \
     40         control_input_count, value_output_count, effect_output_count,        \
     41         control_output_count                                                 \
     42   }
     43     SHARED(ToNumber, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
     44     SHARED(ToString, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
     45     SHARED(ToName, Operator::kNoProperties, 1, 1, 1, 1, 1, 1, 2),
     46     SHARED(ToObject, Operator::kFoldable, 1, 1, 1, 1, 1, 1, 2),
     47     SHARED(Create, Operator::kEliminatable, 2, 1, 1, 0, 1, 1, 0),
     48     SHARED(TypeOf, Operator::kPure, 1, 0, 0, 0, 1, 0, 0),
     49     SHARED(CreateWithContext, Operator::kNoProperties, 2, 0, 1, 1, 1, 1, 2),
     50     SHARED(CreateModuleContext, Operator::kNoProperties, 2, 0, 1, 1, 1, 1, 2),
     51 #undef SHARED
     52 };
     53 
     54 
     55 std::ostream& operator<<(std::ostream& os, const SharedOperator& sop) {
     56   return os << IrOpcode::Mnemonic(sop.opcode);
     57 }
     58 
     59 }  // namespace
     60 
     61 
     62 class JSSharedOperatorTest
     63     : public TestWithZone,
     64       public ::testing::WithParamInterface<SharedOperator> {};
     65 
     66 
     67 TEST_P(JSSharedOperatorTest, InstancesAreGloballyShared) {
     68   const SharedOperator& sop = GetParam();
     69   JSOperatorBuilder javascript1(zone());
     70   JSOperatorBuilder javascript2(zone());
     71   EXPECT_EQ((javascript1.*sop.constructor)(), (javascript2.*sop.constructor)());
     72 }
     73 
     74 
     75 TEST_P(JSSharedOperatorTest, NumberOfInputsAndOutputs) {
     76   JSOperatorBuilder javascript(zone());
     77   const SharedOperator& sop = GetParam();
     78   const Operator* op = (javascript.*sop.constructor)();
     79 
     80   const int context_input_count = 1;
     81   EXPECT_EQ(sop.value_input_count, op->ValueInputCount());
     82   EXPECT_EQ(context_input_count, OperatorProperties::GetContextInputCount(op));
     83   EXPECT_EQ(sop.frame_state_input_count,
     84             OperatorProperties::GetFrameStateInputCount(op));
     85   EXPECT_EQ(sop.effect_input_count, op->EffectInputCount());
     86   EXPECT_EQ(sop.control_input_count, op->ControlInputCount());
     87   EXPECT_EQ(sop.value_input_count + context_input_count +
     88                 sop.frame_state_input_count + sop.effect_input_count +
     89                 sop.control_input_count,
     90             OperatorProperties::GetTotalInputCount(op));
     91 
     92   EXPECT_EQ(sop.value_output_count, op->ValueOutputCount());
     93   EXPECT_EQ(sop.effect_output_count, op->EffectOutputCount());
     94   EXPECT_EQ(sop.control_output_count, op->ControlOutputCount());
     95 }
     96 
     97 
     98 TEST_P(JSSharedOperatorTest, OpcodeIsCorrect) {
     99   JSOperatorBuilder javascript(zone());
    100   const SharedOperator& sop = GetParam();
    101   const Operator* op = (javascript.*sop.constructor)();
    102   EXPECT_EQ(sop.opcode, op->opcode());
    103 }
    104 
    105 
    106 TEST_P(JSSharedOperatorTest, Properties) {
    107   JSOperatorBuilder javascript(zone());
    108   const SharedOperator& sop = GetParam();
    109   const Operator* op = (javascript.*sop.constructor)();
    110   EXPECT_EQ(sop.properties, op->properties());
    111 }
    112 
    113 
    114 INSTANTIATE_TEST_CASE_P(JSOperatorTest, JSSharedOperatorTest,
    115                         ::testing::ValuesIn(kSharedOperators));
    116 
    117 }  // namespace compiler
    118 }  // namespace internal
    119 }  // namespace v8
    120