[llvm] [SROA] Fix debug locations for variables with non-zero offsets (PR #97750)

[Orlando Cazalet-Hyams via llvm-commits]

================
@@ -5110,57 +5288,79 @@ bool SROA::splitAlloca(AllocaInst &AI, AllocaSlices &AS) {
   NumAllocaPartitions += NumPartitions;
   MaxPartitionsPerAlloca.updateMax(NumPartitions);
 
-  // Migrate debug information from the old alloca to the new alloca(s)
-  // and the individual partitions.
----------------
OCHyams wrote:

It's repeated at the lambda call site at the end of this function. Happy to re-instate or move it if you still think it's needed here?

https://github.com/llvm/llvm-project/pull/97750