Fix section relocation for SECTIONREL32 with immediate offset.

Patch by Kai Nacke. This matches the gnu as output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180568 91177308-0d34-0410-b5e6-96231b3b80d8
[mc-coff] Forward Linker Option flags into the .drectve section

Summary:
This is modelled on the Mach-O linker options implementation and should
support a Clang implementation of #pragma comment(lib/linker).

Reviewers: rafael

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D724

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180569 91177308-0d34-0410-b5e6-96231b3b80d8
LoopVectorizer: No need to generate pointer disambiguation checks between readonly pointers. 

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180570 91177308-0d34-0410-b5e6-96231b3b80d8