[llvm] [GlobalISel] Fix volatile flag handling in memmove legalizer (PR #206025)

[Matt Arsenault via llvm-commits]

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@@ -10969,16 +10970,20 @@ LegalizerHelper::lowerMemcpy(MachineInstr &MI, Register Dst, Register Src,
   unsigned CurrOffset = 0;
   unsigned Size = KnownLen;
   for (auto CopyTy : MemOps) {
-    // Issuing an unaligned load / store pair  that overlaps with the previous
-    // pair. Adjust the offset accordingly.
-    if (CopyTy.getSizeInBytes() > Size)
-      CurrOffset -= CopyTy.getSizeInBytes() - Size;
+    unsigned TySize = CopyTy.getSizeInBytes();
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arsenm wrote:

Keep in terms of TypeSize?

https://github.com/llvm/llvm-project/pull/206025