[asan] Support dynamic shadow address instrumentation
Summary:
This patch is adding the support for a shadow memory with
dynamically allocated address range.
The compiler-rt needs to export a symbol containing the shadow
memory range.
This is required to support ASAN on windows 64-bits.
Reviewers: kcc, rnk, vitalybuka
Subscribers: kubabrecka, dberris, llvm-commits, chrisha
Differential Revision: https://reviews.llvm.org/D23354
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281908
91177308-0d34-0410-b5e6-
96231b3b80d8