tree 1a83ac3a5f224568af19fc4bf148d352a1a4e49c
parent 02e7d4e802248574cee7224fea3352b6e558e4ee
author Vladimir Marko <vmarko@google.com> 1412096954 +0100
committer Vladimir Marko <vmarko@google.com> 1413555368 +0100

Quick: In GVN, apply modifications early if outside loop.

To improve GVN performance, apply modifications to blocks
outside loops during the initial convergence phase. During
the post processing phase, apply modifications only to the
blocks belonging to loops.

Also clean up the check whether to run the LVN and add the
capability to limit the maximum number of nested loops we
allow the GVN to process.

Change-Id: Ie7f1254f91a442397c06a325d5d314d8f58e5012