Revert "[DAGCombiner] try repeated fdiv divisor transform before building estimate"

This reverts commit fb9a5307a94e6f1f850e4d89f79103b123f16279 (rL359398)
because it can cause an infinite loop due to opposing combines.

llvm-svn: 359695

1 files changed, 3 insertions, 3 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index aeab54d65a8..d1e71237fe8 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -11993,9 +11993,6 @@ SDValue DAGCombiner::visitFDIV(SDNode *N) {
   if (SDValue NewSel = foldBinOpIntoSelect(N))
     return NewSel;
 
-  if (SDValue V = combineRepeatedFPDivisors(N))
-    return V;
-
   if (Options.UnsafeFPMath || Flags.hasAllowReciprocal()) {
     // fold (fdiv X, c2) -> fmul X, 1/c2 if losing precision is acceptable.
     if (N1CFP) {
@@ -12085,6 +12082,9 @@ SDValue DAGCombiner::visitFDIV(SDNode *N) {
     }
   }
 
+  if (SDValue CombineRepeatedDivisors = combineRepeatedFPDivisors(N))
+    return CombineRepeatedDivisors;
+
   return SDValue();
 }