Commit 953437bd authored by Vladimir Marko's avatar Vladimir Marko
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Revert "Revert "x86/x86-64: Avoid temporary for read barrier field load."" 

Fixed the fault handler recognizing the TEST instruction and
fault address within the lock word. Added tests to 439-npe.

Bug: 29966877
Bug: 12687968
Test: Tested with ART_USE_READ_BARRIER=true on host.
Test: Tested with ART_USE_READ_BARRIER=true ART_HEAP_POISONING=true on host.

This reverts commit ccf15bca.

Change-Id: I8990def5f719c9205bf6e5fdba32027fa82bec50
parent c67d22ac
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