diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | 54 |
1 files changed, 31 insertions, 23 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp index fbf651277c7..bacf8bee032 100644 --- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -115,7 +115,6 @@ TargetLowering::makeLibCall(SelectionDAG &DAG, return LowerCallTo(CLI); } - /// SoftenSetCCOperands - Soften the operands of a comparison. This code is /// shared among BR_CC, SELECT_CC, and SETCC handlers. void TargetLowering::softenSetCCOperands(SelectionDAG &DAG, EVT VT, @@ -127,6 +126,7 @@ void TargetLowering::softenSetCCOperands(SelectionDAG &DAG, EVT VT, // Expand into one or more soft-fp libcall(s). RTLIB::Libcall LC1 = RTLIB::UNKNOWN_LIBCALL, LC2 = RTLIB::UNKNOWN_LIBCALL; + bool ShouldInvertCC = false; switch (CCCode) { case ISD::SETEQ: case ISD::SETOEQ: @@ -166,34 +166,38 @@ void TargetLowering::softenSetCCOperands(SelectionDAG &DAG, EVT VT, LC1 = (VT == MVT::f32) ? RTLIB::O_F32 : (VT == MVT::f64) ? RTLIB::O_F64 : RTLIB::O_F128; break; - default: + case ISD::SETONE: + // SETONE = SETOLT | SETOGT + LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : + (VT == MVT::f64) ? RTLIB::OLT_F64 : RTLIB::OLT_F128; + LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : + (VT == MVT::f64) ? RTLIB::OGT_F64 : RTLIB::OGT_F128; + break; + case ISD::SETUEQ: LC1 = (VT == MVT::f32) ? RTLIB::UO_F32 : (VT == MVT::f64) ? RTLIB::UO_F64 : RTLIB::UO_F128; + LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : + (VT == MVT::f64) ? RTLIB::OEQ_F64 : RTLIB::OEQ_F128; + break; + default: + // Invert CC for unordered comparisons + ShouldInvertCC = true; switch (CCCode) { - case ISD::SETONE: - // SETONE = SETOLT | SETOGT - LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : - (VT == MVT::f64) ? RTLIB::OLT_F64 : RTLIB::OLT_F128; - // Fallthrough - case ISD::SETUGT: - LC2 = (VT == MVT::f32) ? RTLIB::OGT_F32 : - (VT == MVT::f64) ? RTLIB::OGT_F64 : RTLIB::OGT_F128; - break; - case ISD::SETUGE: - LC2 = (VT == MVT::f32) ? RTLIB::OGE_F32 : - (VT == MVT::f64) ? RTLIB::OGE_F64 : RTLIB::OGE_F128; - break; case ISD::SETULT: - LC2 = (VT == MVT::f32) ? RTLIB::OLT_F32 : - (VT == MVT::f64) ? RTLIB::OLT_F64 : RTLIB::OLT_F128; + LC1 = (VT == MVT::f32) ? RTLIB::OGE_F32 : + (VT == MVT::f64) ? RTLIB::OGE_F64 : RTLIB::OGE_F128; break; case ISD::SETULE: - LC2 = (VT == MVT::f32) ? RTLIB::OLE_F32 : + LC1 = (VT == MVT::f32) ? RTLIB::OGT_F32 : + (VT == MVT::f64) ? RTLIB::OGT_F64 : RTLIB::OGT_F128; + break; + case ISD::SETUGT: + LC1 = (VT == MVT::f32) ? RTLIB::OLE_F32 : (VT == MVT::f64) ? RTLIB::OLE_F64 : RTLIB::OLE_F128; break; - case ISD::SETUEQ: - LC2 = (VT == MVT::f32) ? RTLIB::OEQ_F32 : - (VT == MVT::f64) ? RTLIB::OEQ_F64 : RTLIB::OEQ_F128; + case ISD::SETUGE: + LC1 = (VT == MVT::f32) ? RTLIB::OLT_F32 : + (VT == MVT::f64) ? RTLIB::OLT_F64 : RTLIB::OLT_F128; break; default: llvm_unreachable("Do not know how to soften this setcc!"); } @@ -203,16 +207,20 @@ void TargetLowering::softenSetCCOperands(SelectionDAG &DAG, EVT VT, EVT RetVT = getCmpLibcallReturnType(); SDValue Ops[2] = { NewLHS, NewRHS }; NewLHS = makeLibCall(DAG, LC1, RetVT, Ops, 2, false/*sign irrelevant*/, - dl).first; + dl).first; NewRHS = DAG.getConstant(0, dl, RetVT); + CCCode = getCmpLibcallCC(LC1); + if (ShouldInvertCC) + CCCode = getSetCCInverse(CCCode, /*isInteger=*/true); + if (LC2 != RTLIB::UNKNOWN_LIBCALL) { SDValue Tmp = DAG.getNode( ISD::SETCC, dl, getSetCCResultType(DAG.getDataLayout(), *DAG.getContext(), RetVT), NewLHS, NewRHS, DAG.getCondCode(CCCode)); NewLHS = makeLibCall(DAG, LC2, RetVT, Ops, 2, false/*sign irrelevant*/, - dl).first; + dl).first; NewLHS = DAG.getNode( ISD::SETCC, dl, getSetCCResultType(DAG.getDataLayout(), *DAG.getContext(), RetVT), |
