diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index 1cfd8638097..81630410a0b 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -3402,6 +3402,7 @@ SDValue SelectionDAG::getNode(unsigned Opcode, SDLoc DL, EVT VT, SDValue N1, } // Constant fold FP operations. + bool HasFPExceptions = TLI->hasFloatingPointExceptions(); ConstantFPSDNode *N1CFP = dyn_cast<ConstantFPSDNode>(N1.getNode()); ConstantFPSDNode *N2CFP = dyn_cast<ConstantFPSDNode>(N2.getNode()); if (N1CFP) { @@ -3415,28 +3416,32 @@ SDValue SelectionDAG::getNode(unsigned Opcode, SDLoc DL, EVT VT, SDValue N1, switch (Opcode) { case ISD::FADD: s = V1.add(V2, APFloat::rmNearestTiesToEven); - if (s != APFloat::opInvalidOp) + if (!HasFPExceptions || s != APFloat::opInvalidOp) return getConstantFP(V1, VT); break; case ISD::FSUB: s = V1.subtract(V2, APFloat::rmNearestTiesToEven); - if (s!=APFloat::opInvalidOp) + if (!HasFPExceptions || s!=APFloat::opInvalidOp) return getConstantFP(V1, VT); break; case ISD::FMUL: s = V1.multiply(V2, APFloat::rmNearestTiesToEven); - if (s!=APFloat::opInvalidOp) + if (!HasFPExceptions || s!=APFloat::opInvalidOp) return getConstantFP(V1, VT); break; case ISD::FDIV: s = V1.divide(V2, APFloat::rmNearestTiesToEven); - if (s!=APFloat::opInvalidOp && s!=APFloat::opDivByZero) + if (!HasFPExceptions || (s!=APFloat::opInvalidOp && + s!=APFloat::opDivByZero)) { return getConstantFP(V1, VT); + } break; case ISD::FREM : s = V1.mod(V2, APFloat::rmNearestTiesToEven); - if (s!=APFloat::opInvalidOp && s!=APFloat::opDivByZero) + if (!HasFPExceptions || (s!=APFloat::opInvalidOp && + s!=APFloat::opDivByZero)) { return getConstantFP(V1, VT); + } break; case ISD::FCOPYSIGN: V1.copySign(V2); |
