diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp index f1343886af..c3b2d4082c 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp @@ -902,6 +902,18 @@ SDValue DAGTypeLegalizer::ExpandFloatOp_FP_ROUND(SDNode *N) { SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) { MVT RVT = N->getValueType(0); + + // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on + // PPC (the libcall is not available). FIXME: Do this in a less hacky way. + if (RVT == MVT::i32) { + assert(N->getOperand(0).getValueType() == MVT::ppcf128 && + "Logic only correct for ppcf128!"); + SDValue Res = DAG.getNode(ISD::FP_ROUND_INREG, MVT::ppcf128, + N->getOperand(0), DAG.getValueType(MVT::f64)); + Res = DAG.getNode(ISD::FP_ROUND, MVT::f64, Res, DAG.getIntPtrConstant(1)); + return DAG.getNode(ISD::FP_TO_SINT, MVT::i32, Res); + } + RTLIB::Libcall LC = RTLIB::getFPTOSINT(N->getOperand(0).getValueType(), RVT); assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_SINT!"); return MakeLibCall(LC, RVT, &N->getOperand(0), 1, false); @@ -909,6 +921,29 @@ SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_SINT(SDNode *N) { SDValue DAGTypeLegalizer::ExpandFloatOp_FP_TO_UINT(SDNode *N) { MVT RVT = N->getValueType(0); + + // Expand ppcf128 to i32 by hand for the benefit of llvm-gcc bootstrap on + // PPC (the libcall is not available). FIXME: Do this in a less hacky way. + if (RVT == MVT::i32) { + assert(N->getOperand(0).getValueType() == MVT::ppcf128 && + "Logic only correct for ppcf128!"); + const uint64_t TwoE31[] = {0x41e0000000000000LL, 0}; + APFloat APF = APFloat(APInt(128, 2, TwoE31)); + SDValue Tmp = DAG.getConstantFP(APF, MVT::ppcf128); + // X>=2^31 ? (int)(X-2^31)+0x80000000 : (int)X + // FIXME: generated code sucks. + return DAG.getNode(ISD::SELECT_CC, MVT::i32, N->getOperand(0), Tmp, + DAG.getNode(ISD::ADD, MVT::i32, + DAG.getNode(ISD::FP_TO_SINT, MVT::i32, + DAG.getNode(ISD::FSUB, + MVT::ppcf128, + N->getOperand(0), + Tmp)), + DAG.getConstant(0x80000000, MVT::i32)), + DAG.getNode(ISD::FP_TO_SINT, MVT::i32, N->getOperand(0)), + DAG.getCondCode(ISD::SETGE)); + } + RTLIB::Libcall LC = RTLIB::getFPTOUINT(N->getOperand(0).getValueType(), RVT); assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unsupported FP_TO_UINT!"); return MakeLibCall(LC, N->getValueType(0), &N->getOperand(0), 1, false); |