| // Copyright 2009 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "v8.h" |
| |
| #include "codegen-inl.h" |
| #include "register-allocator-inl.h" |
| #include "virtual-frame-inl.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // ------------------------------------------------------------------------- |
| // Result implementation. |
| |
| void Result::ToRegister() { |
| ASSERT(is_valid()); |
| if (is_constant()) { |
| Result fresh = CodeGeneratorScope::Current()->allocator()->Allocate(); |
| ASSERT(fresh.is_valid()); |
| CodeGeneratorScope::Current()->masm()->Move(fresh.reg(), handle()); |
| // This result becomes a copy of the fresh one. |
| fresh.set_type_info(type_info()); |
| *this = fresh; |
| } |
| ASSERT(is_register()); |
| } |
| |
| |
| void Result::ToRegister(Register target) { |
| ASSERT(is_valid()); |
| if (!is_register() || !reg().is(target)) { |
| Result fresh = CodeGeneratorScope::Current()->allocator()->Allocate(target); |
| ASSERT(fresh.is_valid()); |
| if (is_register()) { |
| CodeGeneratorScope::Current()->masm()->movq(fresh.reg(), reg()); |
| } else { |
| ASSERT(is_constant()); |
| CodeGeneratorScope::Current()->masm()->Move(fresh.reg(), handle()); |
| } |
| fresh.set_type_info(type_info()); |
| *this = fresh; |
| } else if (is_register() && reg().is(target)) { |
| ASSERT(CodeGeneratorScope::Current()->has_valid_frame()); |
| CodeGeneratorScope::Current()->frame()->Spill(target); |
| ASSERT(CodeGeneratorScope::Current()->allocator()->count(target) == 1); |
| } |
| ASSERT(is_register()); |
| ASSERT(reg().is(target)); |
| } |
| |
| |
| // ------------------------------------------------------------------------- |
| // RegisterAllocator implementation. |
| |
| Result RegisterAllocator::AllocateByteRegisterWithoutSpilling() { |
| // This function is not used in 64-bit code. |
| UNREACHABLE(); |
| return Result(); |
| } |
| |
| |
| } } // namespace v8::internal |