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2008 Sep 18
4
[LLVMdev] Custom Opcodes versus built-in opcodes
...SDValue Chain = Op.getOperand(0); SDValue LHS = Op.getOperand(2); SDValue RHS = Op.getOperand(3); SDValue Jump = Op.getOperand(4); bool logical_nz = getLogicalNZ(cmpOpcode); SDValue CmpValue; unsigned int brOpcode = CUSTOM::BRANCH_NZERO; CmpValue = DAG.getNode(CUSTOM::CMP, LHS.getValueType(), Chain, DAG.getConstant(cmpOpcode, MVT::i32), LHS, RHS); return DAG.getNode(brOpcode, VT, Chain, Jump, CmpValue); } What I want to happen is to take the branch w/ condition codes and convert...