diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 1e160c4097f..06123487f50 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -12362,10 +12362,10 @@ SDValue DAGCombiner::combineRepeatedFPDivisors(SDNode *N) { if (!UnsafeMath && !Flags.hasAllowReciprocal()) return SDValue(); - // Skip if current node is a reciprocal. + // Skip if current node is a reciprocal/fneg-reciprocal. SDValue N0 = N->getOperand(0); ConstantFPSDNode *N0CFP = isConstOrConstSplatFP(N0, /* AllowUndefs */ true); - if (N0CFP && N0CFP->isExactlyValue(1.0)) + if (N0CFP && (N0CFP->isExactlyValue(1.0) || N0CFP->isExactlyValue(-1.0))) return SDValue(); // Exit early if the target does not want this transform or if there can't |
