Turn off the scavenging based frame reg reuse briefly to measure whether it's still having a significant effect. It shouldn't be now that the pre-RA virtual base reg stuff is in. Assuming that's valididated by the nightly testers, we can simplify a lot of the PEI frame index code.
Turn off the scavenging based frame reg reuse briefly to measure whether it's
still having a significant effect. It shouldn't be now that the pre-RA
virtual base reg stuff is in. Assuming that's valididated by the nightly
testers, we can simplify a lot of the PEI frame index code.

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@112220 91177308-0d34-0410-b5e6-96231b3b80d8

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