tree a5d6b64ae6d5352f761fc2547bda863281adbe40
parent 8b5b1e5593ffa77c393e4172b71a3d5a821d2ed8
author Nicolas Geoffray <ngeoffray@google.com> 1400759417 +0100
committer Nicolas Geoffray <ngeoffray@google.com> 1401100298 +0100

Add a linear scan register allocator to the optimizing compiler.

This is a "by-the-book" implementation. It currently only deals
with allocating registers, with no hint optimizations.

The changes remaining to make it functional are:
- Allocate spill slots.
- Resolution and placements of Move instructions.
- Connect it to the code generator.

Change-Id: Ie0b2f6ba1b98da85425be721ce4afecd6b4012a4