Fix a few comment typos and style issues.

Patch by Moritz Roth!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208990 91177308-0d34-0410-b5e6-96231b3b80d8
Enable the Load/Store optimization pass for Thumb1 but make it return immediately for now.

Patch by Moritz Roth!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208991 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the Load/Store optimization pass to work with Thumb1.

Patch by Moritz Roth!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208992 91177308-0d34-0410-b5e6-96231b3b80d8
Small dyn_cast and auto cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208993 91177308-0d34-0410-b5e6-96231b3b80d8
Re-enable inline memcpy expansion for Thumb1.

Patch by Moritz Roth!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208994 91177308-0d34-0410-b5e6-96231b3b80d8