diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index b1accdd..e153842 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -509,6 +509,7 @@ namespace { SDValue visitFMUL(SDNode *N); template <class MatchContextClass> SDValue visitFMA(SDNode *N); SDValue visitFMAD(SDNode *N); + SDValue visitFMULADD(SDNode *N); SDValue visitFDIV(SDNode *N); SDValue visitFREM(SDNode *N); SDValue visitFSQRT(SDNode *N); @@ -1991,6 +1992,7 @@ SDValue DAGCombiner::visit(SDNode *N) { case ISD::FMUL: return visitFMUL(N); case ISD::FMA: return visitFMA<EmptyMatchContext>(N); case ISD::FMAD: return visitFMAD(N); + case ISD::FMULADD: return visitFMULADD(N); case ISD::FDIV: return visitFDIV(N); case ISD::FREM: return visitFREM(N); case ISD::FSQRT: return visitFSQRT(N); @@ -18444,6 +18446,21 @@ SDValue DAGCombiner::visitFMAD(SDNode *N) { return SDValue(); } +SDValue DAGCombiner::visitFMULADD(SDNode *N) { + SDValue N0 = N->getOperand(0); + SDValue N1 = N->getOperand(1); + SDValue N2 = N->getOperand(2); + EVT VT = N->getValueType(0); + SDLoc DL(N); + + // Constant fold FMULADD. + if (SDValue C = + DAG.FoldConstantArithmetic(ISD::FMULADD, DL, VT, {N0, N1, N2})) + return C; + + return SDValue(); +} + // Combine multiple FDIVs with the same divisor into multiple FMULs by the // reciprocal. // E.g., (a / D; b / D;) -> (recip = 1.0 / D; a * recip; b * recip) |