When instructions are hoisted out of loops by MachineLICM, remove their debug loc.
This prevents erratic stepping behavior as well as incorrect source attribution
for sample profiling.

Reviewers: dblakie

Subscribers: llvm-commit

Differential Revision: https://reviews.llvm.org/D27290



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288442 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed