[tsan] Track external API accesses as 1-byte accesses (instead of 8-byte)
[tsan] Track external API accesses as 1-byte accesses (instead of 8-byte)

It doesn't really make sense to track them as 8-byte accesses.

Differential Revision: https://reviews.llvm.org/D32359



git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@301001 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt