diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index 3aaf5c6043..7d9f79fed3 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -1256,7 +1256,6 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val); if (N1C) { if (N2C) { - if (!CombinerEnabled) { uint64_t C1 = N1C->getValue(), C2 = N2C->getValue(); switch (Opcode) { case ISD::ADD: return getConstant(C1 + C2, VT); @@ -1284,7 +1283,6 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, case ISD::SRA : return getConstant(N1C->getSignExtended() >>(int)C2, VT); default: break; } - } } else { // Cannonicalize constant to RHS if commutative if (isCommutativeBinOp(Opcode)) { std::swap(N1C, N2C); @@ -1315,6 +1313,7 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, if (N2C) { uint64_t C2 = N2C->getValue(); + if (!CombinerEnabled) { switch (Opcode) { case ISD::ADD: if (!C2) return N1; // add X, 0 -> X @@ -1481,6 +1480,7 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, } break; } + } // Reassociate ((X op C1) op C2) if possible. if (N1.getOpcode() == Opcode && isAssociativeBinOp(Opcode)) @@ -1493,7 +1493,6 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, ConstantFPSDNode *N2CFP = dyn_cast<ConstantFPSDNode>(N2.Val); if (N1CFP) { if (N2CFP) { - if (!CombinerEnabled) { double C1 = N1CFP->getValue(), C2 = N2CFP->getValue(); switch (Opcode) { case ISD::ADD: return getConstantFP(C1 + C2, VT); @@ -1507,7 +1506,6 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, break; default: break; } - } } else { // Cannonicalize constant to RHS if commutative if (isCommutativeBinOp(Opcode)) { std::swap(N1CFP, N2CFP); @@ -1515,9 +1513,11 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, } } + if (!CombinerEnabled) { if (Opcode == ISD::FP_ROUND_INREG) return getNode(ISD::FP_EXTEND, VT, getNode(ISD::FP_ROUND, cast<VTSDNode>(N2)->getVT(), N1)); + } } // Finally, fold operations that do not require constants. |