[DebugInfo] Fix pr41175 Dead Store Elimination missing debug loc
Bug: https://bugs.llvm.org/show_bug.cgi?id=41175
In the bug test case the DSE pass is shortening the range of memory that a
memset is working on. A getelementptr is generated so that the new
starting address can be passed to memset. This instruction was not given
a DebugLoc.
To fix the bug, copy the DebugLoc from the memset instruction.
Patch by Orlando Cazalet-Hyams!
Differential Revision: https://reviews.llvm.org/D60556
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358270
91177308-0d34-0410-b5e6-
96231b3b80d8