[llvm] [DAG] Combine manual reciprocal square root refinement into FRSQRTS. (PR #172067)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Target/AArch64/AArch64ISelLowering.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
index 000910447..8e79c2c09 100644
--- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -28367,8 +28367,9 @@ static SDValue performCTPOPCombine(SDNode *N,
 //   where r = frsqrte(x) is the initial estimate.
 //
 // We convert this to use FRSQRTS: r * frsqrts(x * r, r).
-static SDValue performRSQRTRefinementCombine(SDNode *N, SelectionDAG &DAG,
-                                             const AArch64Subtarget *Subtarget) {
+static SDValue
+performRSQRTRefinementCombine(SDNode *N, SelectionDAG &DAG,
+                              const AArch64Subtarget *Subtarget) {
   using namespace SDPatternMatch;
 
   if (!Subtarget->useRSqrt())

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https://github.com/llvm/llvm-project/pull/172067