[asan] Fix instruction emission ordering with dynamic shadow.

Summary:
Instrumentation to copy byval arguments is now correctly inserted
after the dynamic shadow base is loaded.

Reviewers: vitalybuka, eugenis

Reviewed By: vitalybuka

Subscribers: hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D36533

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310503 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed