| // 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 "src/v8.h" |
| |
| #include "src/interpreter/bytecode-array-builder.h" |
| #include "src/interpreter/bytecode-register-allocator.h" |
| #include "test/unittests/test-utils.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| class BytecodeRegisterAllocatorTest : public TestWithIsolateAndZone { |
| public: |
| BytecodeRegisterAllocatorTest() {} |
| ~BytecodeRegisterAllocatorTest() override {} |
| }; |
| |
| |
| TEST_F(BytecodeRegisterAllocatorTest, TemporariesRecycled) { |
| BytecodeArrayBuilder builder(isolate(), zone()); |
| builder.set_parameter_count(0); |
| builder.set_locals_count(0); |
| builder.set_context_count(0); |
| |
| int first; |
| { |
| BytecodeRegisterAllocator temporaries(&builder); |
| first = temporaries.NewRegister().index(); |
| temporaries.NewRegister(); |
| temporaries.NewRegister(); |
| temporaries.NewRegister(); |
| } |
| |
| int second; |
| { |
| BytecodeRegisterAllocator temporaries(&builder); |
| second = temporaries.NewRegister().index(); |
| } |
| |
| CHECK_EQ(first, second); |
| } |
| |
| |
| TEST_F(BytecodeRegisterAllocatorTest, ConsecutiveRegisters) { |
| BytecodeArrayBuilder builder(isolate(), zone()); |
| builder.set_parameter_count(0); |
| builder.set_locals_count(0); |
| builder.set_context_count(0); |
| |
| BytecodeRegisterAllocator temporaries(&builder); |
| temporaries.PrepareForConsecutiveAllocations(4); |
| Register reg0 = temporaries.NextConsecutiveRegister(); |
| Register other = temporaries.NewRegister(); |
| Register reg1 = temporaries.NextConsecutiveRegister(); |
| Register reg2 = temporaries.NextConsecutiveRegister(); |
| Register reg3 = temporaries.NextConsecutiveRegister(); |
| USE(other); |
| |
| CHECK(Register::AreContiguous(reg0, reg1, reg2, reg3)); |
| } |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |