[llvm] [RegisterScavenging] Respect early-clobber when scavenging registers (PR #184814)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/CodeGen/RegisterScavenging.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/CodeGen/RegisterScavenging.cpp b/llvm/lib/CodeGen/RegisterScavenging.cpp
index b7369dab2..36b56d123 100644
--- a/llvm/lib/CodeGen/RegisterScavenging.cpp
+++ b/llvm/lib/CodeGen/RegisterScavenging.cpp
@@ -323,8 +323,9 @@ Register RegScavenger::scavengeRegisterBackwards(const TargetRegisterClass &RC,
         SmallVector<MCPhysReg>(RC.getRawAllocationOrder(MF));
 
   // Find the register whose use is furthest away.
-  std::pair<MCPhysReg, MachineBasicBlock::iterator> P = findSurvivorBackwards(
-      *MRI, std::prev(MBBI), To, LiveUnits, FilteredAllocationOrder, RestoreAfter);
+  std::pair<MCPhysReg, MachineBasicBlock::iterator> P =
+      findSurvivorBackwards(*MRI, std::prev(MBBI), To, LiveUnits,
+                            FilteredAllocationOrder, RestoreAfter);
   MCPhysReg Reg = P.first;
   MachineBasicBlock::iterator SpillBefore = P.second;
   // Found an available register?

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https://github.com/llvm/llvm-project/pull/184814