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
This patch changes the DFSan instrumentation for aarch64 to instead of using fixes application mask defined by SANITIZER_AARCH64_VMA to read the application shadow mask value from compiler-rt. The value is initialized based on runtime VAM detection. Along with this patch a compiler-rt one will also be added to export the shadow mask variable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254196 91177308-0d34-0410-b5e6-96231b3b80d8