[turbofan] Initial support for Switch.

test/unittests/compiler/common-operator-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 <limits>
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/operator.h"
 #include "src/compiler/operator-properties.h"
@@ skipping 115 matching lines @@
   CommonOperatorBuilder* common() { return &common_; }
 
  private:
   CommonOperatorBuilder common_;
 };
 
 
 const int kArguments[] = {1, 5, 6, 42, 100, 10000, 65000};
 
 
+const size_t kCases[] = {2, 3, 4, 100, 255};
+
+
 const float kFloatValues[] = {-std::numeric_limits<float>::infinity(),
                               std::numeric_limits<float>::min(),
                               -1.0f,
                               -0.0f,
                               0.0f,
                               1.0f,
                               std::numeric_limits<float>::max(),
                               std::numeric_limits<float>::infinity(),
                               std::numeric_limits<float>::quiet_NaN(),
                               std::numeric_limits<float>::signaling_NaN()};
@@ skipping 27 matching lines @@
     EXPECT_EQ(0, op->EffectInputCount());
     EXPECT_EQ(1, op->ControlInputCount());
     EXPECT_EQ(2, OperatorProperties::GetTotalInputCount(op));
     EXPECT_EQ(0, op->ValueOutputCount());
     EXPECT_EQ(0, op->EffectOutputCount());
     EXPECT_EQ(2, op->ControlOutputCount());
   }
 }
 
 
+TEST_F(CommonOperatorTest, Switch) {
+  TRACED_FOREACH(size_t, cases, kCases) {
+    const Operator* const op = common()->Switch(cases);
+    EXPECT_EQ(IrOpcode::kSwitch, op->opcode());
+    EXPECT_EQ(Operator::kFoldable, op->properties());
+    EXPECT_EQ(1, op->ValueInputCount());
+    EXPECT_EQ(0, op->EffectInputCount());
+    EXPECT_EQ(1, op->ControlInputCount());
+    EXPECT_EQ(2, OperatorProperties::GetTotalInputCount(op));
+    EXPECT_EQ(0, op->ValueOutputCount());
+    EXPECT_EQ(0, op->EffectOutputCount());
+    EXPECT_EQ(static_cast<int>(cases), op->ControlOutputCount());
+  }
+}
+
+
+TEST_F(CommonOperatorTest, Case) {
+  TRACED_FORRANGE(size_t, index, 0, 1024) {
+    const Operator* const op = common()->Case(index);
+    EXPECT_EQ(IrOpcode::kCase, op->opcode());
+    EXPECT_EQ(Operator::kFoldable, op->properties());
+    EXPECT_EQ(index, CaseIndexOf(op));
+    EXPECT_EQ(0, op->ValueInputCount());
+    EXPECT_EQ(0, op->EffectInputCount());
+    EXPECT_EQ(1, op->ControlInputCount());
+    EXPECT_EQ(1, OperatorProperties::GetTotalInputCount(op));
+    EXPECT_EQ(0, op->ValueOutputCount());
+    EXPECT_EQ(0, op->EffectOutputCount());
+    EXPECT_EQ(1, op->ControlOutputCount());
+  }
+}
+
+
 TEST_F(CommonOperatorTest, Select) {
   static const MachineType kTypes[] = {
       kMachInt8,    kMachUint8,   kMachInt16,    kMachUint16,
       kMachInt32,   kMachUint32,  kMachInt64,    kMachUint64,
       kMachFloat32, kMachFloat64, kMachAnyTagged};
   TRACED_FOREACH(MachineType, type, kTypes) {
     TRACED_FOREACH(BranchHint, hint, kHints) {
       const Operator* const op = common()->Select(type, hint);
       EXPECT_EQ(IrOpcode::kSelect, op->opcode());
       EXPECT_EQ(Operator::kPure, op->properties());
@@ skipping 94 matching lines @@
     EXPECT_EQ(arguments + 1, OperatorProperties::GetTotalInputCount(op));
     EXPECT_EQ(0, op->ControlOutputCount());
     EXPECT_EQ(0, op->EffectOutputCount());
     EXPECT_EQ(1, op->ValueOutputCount());
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8