================ @@ -2621,6 +2642,29 @@ SDValue DAGTypeLegalizer::PromoteFloatRes_FP_ROUND(SDNode *N) { return DAG.getNode(GetPromotionOpcode(VT, NVT), DL, NVT, Round); } +// Explicit operation to reduce precision. Reduce the value to half precision +// and promote it back to the legal type. +SDValue DAGTypeLegalizer::PromoteFloatRes_STRICT_FP_ROUND(SDNode *N) { + SDLoc DL(N); + + SDValue Chain = N->getOperand(0); + SDValue Op = N->getOperand(1); + EVT VT = N->getValueType(0); + EVT OpVT = Op->getValueType(0); + EVT NVT = TLI.getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); + EVT IVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); + + // Round promoted float to desired precision + SDValue Round = DAG.getNode(GetPromotionOpcodeStrict(OpVT, VT), DL, + DAG.getVTList(IVT, MVT::Other), Chain, Op); + // Promote it back to the legal output type + SDValue Res = + DAG.getNode(GetPromotionOpcodeStrict(VT, NVT), DL, ---------------- andykaylor wrote:
GetPromotionOpcode() is used in a lot more places. Are those not needed for strict or are they coming in later patches? https://github.com/llvm/llvm-project/pull/74332 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits