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

[Jeremy Morse via llvm-commits]

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@@ -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.
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jmorse wrote:

Useful comment surely?

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