ThinLTOBitcodeWriter: Strip debug info from merged module.

This module will contain nothing but vtable definitions and (soon)
available_externally function definitions, so there is no point in keeping
debug info in the module.

Differential Revision: https://reviews.llvm.org/D28913

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294511 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed