tree 923d05c55cd5fd9b441bc7ee6737c0831986546f
parent a77530fd7f13971574c458a987d7025a44a3b5b4
author buzbee <buzbee@google.com> 1399673418 -0700
committer buzbee <buzbee@google.com> 1399784697 -0700

Quick compiler: Fix liveness tracking

Rework temp register liveness tracking to play nicely with aliased
physical registers, and re-enable liveness tracking optimization.

Add a pair of x86 utility routines that act like UpdateLoc(),
but only show in-register live temps if they are of the expected
register class.

Change-Id: I92779e0da2554689103e7488025be281f1a58989