asan: faster thead-local cache for memory allocator


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@172521 91177308-0d34-0410-b5e6-96231b3b80d8
asan: correct non-temporal prefetch for memory allocator


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@172522 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] hide PR_SET_NAME under an ifdef (for older kernels)

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@172523 91177308-0d34-0410-b5e6-96231b3b80d8