Revert "load store elimination."

Breaks libcore tests:

  libcore.java.lang.ref.FinalizeTest#testWatchdogDoesNotFailForObjectsThatAreNearTheDeadline
  libcore.java.util.ResourceLeakageDetectorTest#testDetectsUnclosedCloseGuard
  org.apache.harmony.tests.java.lang.ref.ReferenceTest#test_finalizeReferenceInteraction

This reverts commit 589dac7f0ce078d19aad7e35bb0195c47ddf01d2.

Change-Id: I55115765c10762d5bc152d3425e4622560d8b9f4
14 files changed