+
+ // If node has a single use which is CLAMP_R600, folds it
+ if (Result->hasOneUse() && Result->isMachineOpcode()) {
+ SDNode *PotentialClamp = *Result->use_begin();
+ if (PotentialClamp->isMachineOpcode() &&
+ PotentialClamp->getMachineOpcode() == AMDGPU::CLAMP_R600) {
+ unsigned ClampIdx =
+ TII->getOperandIdx(Result->getMachineOpcode(), R600Operands::CLAMP);
+ std::vector<SDValue> Ops;
+ unsigned NumOp = Result->getNumOperands();
+ for (unsigned i = 0; i < NumOp; ++i) {
+ Ops.push_back(Result->getOperand(i));
+ }
+ Ops[ClampIdx - 1] = CurDAG->getTargetConstant(1, MVT::i32);
+ Result = CurDAG->SelectNodeTo(PotentialClamp,
+ Result->getMachineOpcode(), PotentialClamp->getVTList(),
+ Ops.data(), NumOp);
+ }
+ }