[llvm] [CodeGen] Fix SplitCriticalEdge using parent valno for subrange segments (PR #208480)

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git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/CodeGen/MachineBasicBlock.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/CodeGen/MachineBasicBlock.cpp b/llvm/lib/CodeGen/MachineBasicBlock.cpp
index 3b15f5d6f..5d27412a0 100644
--- a/llvm/lib/CodeGen/MachineBasicBlock.cpp
+++ b/llvm/lib/CodeGen/MachineBasicBlock.cpp
@@ -1350,11 +1350,12 @@ MachineBasicBlock *MachineBasicBlock::SplitCriticalEdge(
           LI.addSegment(LiveInterval::Segment(StartIndex, EndIndex, VNI));
           for (auto &SR : LI.subranges()) {
             // Use the subrange's own value number; reusing the parent range's
-            // VNInfo overlaps the subrange's existing value with a foreign valno
-            // when the register is live through the split block. Mirrors the
-            // live-through update loop below.
+            // VNInfo overlaps the subrange's existing value with a foreign
+            // valno when the register is live through the split block. Mirrors
+            // the live-through update loop below.
             if (VNInfo *SubVNI = SR.getVNInfoAt(PrevIndex))
-              SR.addSegment(LiveInterval::Segment(StartIndex, EndIndex, SubVNI));
+              SR.addSegment(
+                  LiveInterval::Segment(StartIndex, EndIndex, SubVNI));
           }
         }
       }

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https://github.com/llvm/llvm-project/pull/208480