Add timing of the IR parsing code with a new -time-ir-parsing flag


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177543 91177308-0d34-0410-b5e6-96231b3b80d8
Make target-specific test case in r177474 only run when that target is built

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177545 91177308-0d34-0410-b5e6-96231b3b80d8
DIBuilder: allow linkage name to be specified for global variables

Patch by Kai Nacke (kai@redstar.de)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177547 91177308-0d34-0410-b5e6-96231b3b80d8