tree f7b88350423cbd402c6e69102b21da56d9169c9f
parent 479f5bfdb02b191f03b3de1a7c3d5a5098b3fcaf
author Vedant Kumar <vsk@apple.com> 1597081453 -0700
committer Vedant Kumar <vsk@apple.com> 1597179920 -0700

[Instruction] Add updateLocationAfterHoist helper

Introduce a helper on Instruction which can be used to update the debug
location after hoisting.

Use this in GVN and LICM, where we were mistakenly introducing new line
0 locations after hoisting (the docs recommend dropping the location in
this case).

For more context, see the discussion in https://reviews.llvm.org/D60913.

Differential Revision: https://reviews.llvm.org/D85670