[llvm] AArch64: Reformat some debug printing blocks (PR #165178)

[Benjamin Maxwell via llvm-commits]

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@@ -2009,11 +2009,15 @@ bool AArch64FrameLowering::spillCalleeSavedRegisters(
       }
     }
 
-    LLVM_DEBUG(dbgs() << "CSR spill: (" << printReg(Reg1, TRI);
-               if (RPI.isPaired()) dbgs() << ", " << printReg(Reg2, TRI);
-               dbgs() << ") -> fi#(" << RPI.FrameIdx;
-               if (RPI.isPaired()) dbgs() << ", " << RPI.FrameIdx + 1;
-               dbgs() << ")\n");
+    LLVM_DEBUG({
+      dbgs() << "CSR spill: (" << printReg(Reg1, TRI);
+      if (RPI.isPaired())
+        dbgs() << ", " << printReg(Reg2, TRI);
+      dbgs() << ") -> fi#(" << RPI.FrameIdx;
+      if (RPI.isPaired())
+        dbgs() << ", " << RPI.FrameIdx + 1;
+      dbgs() << ")\n"
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MacDue wrote:

This is missing a `;`, but otherwise, LG. Also, add NFC to the title. 

https://github.com/llvm/llvm-project/pull/165178