diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 19285845de8..a19e6119a7c 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -1134,15 +1134,15 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { } case ISD::CTLZ: { /* for now, we do this: - x = x | (x >> 1); - x = x | (x >> 2); - ... - x = x | (x >>16); - x = x | (x >>32); // for 64-bit input - return popcount(~x); + x = x | (x >> 1); + x = x | (x >> 2); + ... + x = x | (x >>16); + x = x | (x >>32); // for 64-bit input + return popcount(~x); - but see also: http://www.hackersdelight.org/HDcode/nlz.cc */ - MVT::ValueType VT = Tmp1.getValueType(); + but see also: http://www.hackersdelight.org/HDcode/nlz.cc */ + MVT::ValueType VT = Tmp1.getValueType(); MVT::ValueType ShVT = TLI.getShiftAmountTy(); unsigned len = getSizeInBits(VT); for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { @@ -1151,19 +1151,19 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { DAG.getNode(ISD::SRL, VT, Tmp1, Tmp3)); } Tmp3 = DAG.getNode(ISD::XOR, VT, Tmp1, DAG.getConstant(~0ULL, VT)); - Result = DAG.getNode(ISD::CTPOP, VT, Tmp3); + Result = LegalizeOp(DAG.getNode(ISD::CTPOP, VT, Tmp3)); break; } case ISD::CTTZ: { - // for now, we use: { return popcount(~x & (x - 1)); } - // but see also http://www.hackersdelight.org/HDcode/ntz.cc ) - MVT::ValueType VT = Tmp1.getValueType(); - Tmp2 = DAG.getConstant(~0ULL, VT); - Tmp3 = DAG.getNode(ISD::AND, VT, - DAG.getNode(ISD::XOR, VT, Tmp1, Tmp2), - DAG.getNode(ISD::SUB, VT, Tmp1, - DAG.getConstant(1, VT))); - Result = DAG.getNode(ISD::CTPOP, VT, Tmp3); + // for now, we use: { return popcount(~x & (x - 1)); } + // but see also http://www.hackersdelight.org/HDcode/ntz.cc + MVT::ValueType VT = Tmp1.getValueType(); + Tmp2 = DAG.getConstant(~0ULL, VT); + Tmp3 = DAG.getNode(ISD::AND, VT, + DAG.getNode(ISD::XOR, VT, Tmp1, Tmp2), + DAG.getNode(ISD::SUB, VT, Tmp1, + DAG.getConstant(1, VT))); + Result = LegalizeOp(DAG.getNode(ISD::CTPOP, VT, Tmp3)); break; } default: