Move backend specific files to separate directories.

src/arm/register-allocator-arm.cc

Index: src/arm/register-allocator-arm.cc
diff --git a/src/arm/register-allocator-arm.cc b/src/arm/register-allocator-arm.cc
new file mode 100644
index 0000000000000000000000000000000000000000..36a4d20e1a4703b3137c6e9760e443710c5493ee
--- /dev/null
+++ b/src/arm/register-allocator-arm.cc
@@ -0,0 +1,96 @@
+// 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"
+
+namespace v8 { namespace internal {
+
+// -------------------------------------------------------------------------
+// Result implementation.
+
+void Result::ToRegister() {
+  UNIMPLEMENTED();
+}
+
+
+void Result::ToRegister(Register target) {
+  UNIMPLEMENTED();
+}
+
+
+// -------------------------------------------------------------------------
+// RegisterAllocator implementation.
+
+RegisterFile RegisterAllocator::Reserved() {
+  RegisterFile reserved;
+  reserved.Use(sp);
+  reserved.Use(fp);
+  reserved.Use(cp);
+  reserved.Use(pc);
+  return reserved;
+}
+
+
+void RegisterAllocator::UnuseReserved(RegisterFile* register_file) {
+  register_file->ref_counts_[sp.code()] = 0;
+  register_file->ref_counts_[fp.code()] = 0;
+  register_file->ref_counts_[cp.code()] = 0;
+  register_file->ref_counts_[pc.code()] = 0;
+}
+
+
+void RegisterAllocator::Initialize() {
+  Reset();
+  // The following registers are live on function entry, saved in the
+  // frame, and available for allocation during execution.
+  Use(r1);  // JS function.
+  Use(lr);  // Return address.
+}
+
+
+void RegisterAllocator::Reset() {
+  registers_.Reset();
+  // The following registers are live on function entry and reserved
+  // during execution.
+  Use(sp);  // Stack pointer.
+  Use(fp);  // Frame pointer (caller's frame pointer on entry).
+  Use(cp);  // Context context (callee's context on entry).
+  Use(pc);  // Program counter.
+}
+
+
+Result RegisterAllocator::AllocateByteRegisterWithoutSpilling() {
+  UNIMPLEMENTED();
+  Result invalid(cgen_);
+  return invalid;
+}
+
+
+} }  // namespace v8::internal