Index: llvm/lib/Target/ARM/ARMFrameLowering.cpp
===================================================================
--- llvm/lib/Target/ARM/ARMFrameLowering.cpp
+++ llvm/lib/Target/ARM/ARMFrameLowering.cpp
@@ -2570,6 +2570,9 @@
   for (MachineBasicBlock *MBB : BeforePrologueRegion) {
     // Make sure the LiveIns are still sorted and unique.
     MBB->sortUniqueLiveIns();
+    // Only update for immediate predecessors.
+    if (!PrologueMBB.isPredecessor(MBB))
+      continue;
     // Replace the edges to PrologueMBB by edges to the sequences
     // we are about to add.
     MBB->ReplaceUsesOfBlockWith(&PrologueMBB, AddedBlocks[0]);