[DAGCombine] visitFDIV - Use isCheaperToUseNegatedFPOps helper for (fdiv (fneg X...

Minor cleanup to use equivalent helper code.

llvm-svn: 371724

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index eec3e0848beaf687618d06d23d5ff70bec77ce5f..1a7cf9e484bd471dbd42e0817c0182d94fc26c9a 100644 (file)
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -12687,21 +12687,11 @@ SDValue DAGCombiner::visitFDIV(SDNode *N) {
   }
 
   // (fdiv (fneg X), (fneg Y)) -> (fdiv X, Y)
-  if (char LHSNeg = isNegatibleForFree(N0, LegalOperations, TLI, &Options,
-                                       ForCodeSize)) {
-    if (char RHSNeg = isNegatibleForFree(N1, LegalOperations, TLI, &Options,
-                                         ForCodeSize)) {
-      // Both can be negated for free, check to see if at least one is cheaper
-      // negated.
-      if (LHSNeg == 2 || RHSNeg == 2)
-        return DAG.getNode(ISD::FDIV, SDLoc(N), VT,
-                           GetNegatedExpression(N0, DAG, LegalOperations,
-                                                ForCodeSize),
-                           GetNegatedExpression(N1, DAG, LegalOperations,
-                                                ForCodeSize),
-                           Flags);
-    }
-  }
+  if (isCheaperToUseNegatedFPOps(N0, N1))
+    return DAG.getNode(
+        ISD::FDIV, SDLoc(N), VT,
+        GetNegatedExpression(N0, DAG, LegalOperations, ForCodeSize),
+        GetNegatedExpression(N1, DAG, LegalOperations, ForCodeSize), Flags);
 
   return SDValue();
 }