Mark some common operator with Property::kNoThrow.

test/unittests/compiler/value-numbering-reducer-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/graph.h"
 #include "src/compiler/node.h"
 #include "src/compiler/operator.h"
 #include "src/compiler/value-numbering-reducer.h"
 #include "test/unittests/test-utils.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 struct TestOperator : public Operator {
   TestOperator(Operator::Opcode opcode, Operator::Properties properties,
                size_t value_in, size_t value_out)
       : Operator(opcode, properties, "TestOp", value_in, 0, 0, value_out, 0,
                  0) {}
 };
 
 
-static const TestOperator kOp0(0, Operator::kEliminatable, 0, 1);
-static const TestOperator kOp1(1, Operator::kEliminatable, 1, 1);
+static const TestOperator kOp0(0, Operator::kIdempotent, 0, 1);
+static const TestOperator kOp1(1, Operator::kIdempotent, 1, 1);
 
 
 class ValueNumberingReducerTest : public TestWithZone {
  public:
   ValueNumberingReducerTest() : graph_(zone()), reducer_(zone()) {}
 
  protected:
   Reduction Reduce(Node* node) { return reducer_.Reduce(node); }
 
   Graph* graph() { return &graph_; }
@@ skipping 32 matching lines @@
 }
 
 
 TEST_F(ValueNumberingReducerTest, OperatorEqualityNotIdentity) {
   static const size_t kMaxInputCount = 16;
   Node* inputs[kMaxInputCount];
   for (size_t i = 0; i < arraysize(inputs); ++i) {
     Operator::Opcode opcode = static_cast<Operator::Opcode>(
         std::numeric_limits<Operator::Opcode>::max() - i);
     inputs[i] = graph()->NewNode(
-        new (zone()) TestOperator(opcode, Operator::kEliminatable, 0, 1));
+        new (zone()) TestOperator(opcode, Operator::kIdempotent, 0, 1));
   }
   TRACED_FORRANGE(size_t, input_count, 0, arraysize(inputs)) {
     const TestOperator op1(static_cast<Operator::Opcode>(input_count),
-                           Operator::kEliminatable, input_count, 1);
+                           Operator::kIdempotent, input_count, 1);
     Node* n1 = graph()->NewNode(&op1, static_cast<int>(input_count), inputs);
     Reduction r1 = Reduce(n1);
     EXPECT_FALSE(r1.Changed());
 
     const TestOperator op2(static_cast<Operator::Opcode>(input_count),
-                           Operator::kEliminatable, input_count, 1);
+                           Operator::kIdempotent, input_count, 1);
     Node* n2 = graph()->NewNode(&op2, static_cast<int>(input_count), inputs);
     Reduction r2 = Reduce(n2);
     EXPECT_TRUE(r2.Changed());
     EXPECT_EQ(n1, r2.replacement());
   }
 }
 
 
 TEST_F(ValueNumberingReducerTest, SubsequentReductionsYieldTheSameNode) {
   static const size_t kMaxInputCount = 16;
   Node* inputs[kMaxInputCount];
   for (size_t i = 0; i < arraysize(inputs); ++i) {
     Operator::Opcode opcode = static_cast<Operator::Opcode>(
         std::numeric_limits<Operator::Opcode>::max() - i);
     inputs[i] = graph()->NewNode(
-        new (zone()) TestOperator(opcode, Operator::kEliminatable, 0, 1));
+        new (zone()) TestOperator(opcode, Operator::kIdempotent, 0, 1));
   }
   TRACED_FORRANGE(size_t, input_count, 0, arraysize(inputs)) {
-    const TestOperator op1(1, Operator::kEliminatable, input_count, 1);
+    const TestOperator op1(1, Operator::kIdempotent, input_count, 1);
     Node* n = graph()->NewNode(&op1, static_cast<int>(input_count), inputs);
     Reduction r = Reduce(n);
     EXPECT_FALSE(r.Changed());
 
     r = Reduce(graph()->NewNode(&op1, static_cast<int>(input_count), inputs));
     ASSERT_TRUE(r.Changed());
     EXPECT_EQ(n, r.replacement());
 
     r = Reduce(graph()->NewNode(&op1, static_cast<int>(input_count), inputs));
     ASSERT_TRUE(r.Changed());
     EXPECT_EQ(n, r.replacement());
   }
 }
 
 
 TEST_F(ValueNumberingReducerTest, WontReplaceNodeWithItself) {
   Node* n = graph()->NewNode(&kOp0);
   EXPECT_FALSE(Reduce(n).Changed());
   EXPECT_FALSE(Reduce(n).Changed());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8