From c3e26727c18e15b64098fc7f397e09147cd78eeb Mon Sep 17 00:00:00 2001 From: Duncan Sands Date: Fri, 18 Jul 2008 21:18:48 +0000 Subject: [PATCH] Softfloat support for FDIV. Patch by Richard Pennington. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53773 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp | 13 +++++++++++++ lib/CodeGen/SelectionDAG/LegalizeTypes.h | 1 + test/CodeGen/ARM/2008-07-17-Fdiv.ll | 6 ++++++ 3 files changed, 20 insertions(+) create mode 100644 test/CodeGen/ARM/2008-07-17-Fdiv.ll diff --git a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp index 888cec074dc..e50ff1c9912 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp @@ -61,6 +61,7 @@ void DAGTypeLegalizer::SoftenFloatResult(SDNode *N, unsigned ResNo) { break; case ISD::FADD: R = SoftenFloatRes_FADD(N); break; case ISD::FCOPYSIGN: R = SoftenFloatRes_FCOPYSIGN(N); break; + case ISD::FDIV: R = SoftenFloatRes_FDIV(N); break; case ISD::FMUL: R = SoftenFloatRes_FMUL(N); break; case ISD::FP_EXTEND: R = SoftenFloatRes_FP_EXTEND(N); break; case ISD::FP_ROUND: R = SoftenFloatRes_FP_ROUND(N); break; @@ -146,6 +147,18 @@ SDOperand DAGTypeLegalizer::SoftenFloatRes_FCOPYSIGN(SDNode *N) { return DAG.getNode(ISD::OR, LVT, LHS, SignBit); } +SDOperand DAGTypeLegalizer::SoftenFloatRes_FDIV(SDNode *N) { + MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); + SDOperand Ops[2] = { GetSoftenedFloat(N->getOperand(0)), + GetSoftenedFloat(N->getOperand(1)) }; + return MakeLibCall(GetFPLibCall(N->getValueType(0), + RTLIB::DIV_F32, + RTLIB::DIV_F64, + RTLIB::DIV_F80, + RTLIB::DIV_PPCF128), + NVT, Ops, 2, false); +} + SDOperand DAGTypeLegalizer::SoftenFloatRes_FMUL(SDNode *N) { MVT NVT = TLI.getTypeToTransformTo(N->getValueType(0)); SDOperand Ops[2] = { GetSoftenedFloat(N->getOperand(0)), diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h index f6a5c6995a4..81224592a9b 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h +++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h @@ -336,6 +336,7 @@ private: SDOperand SoftenFloatRes_ConstantFP(ConstantFPSDNode *N); SDOperand SoftenFloatRes_FADD(SDNode *N); SDOperand SoftenFloatRes_FCOPYSIGN(SDNode *N); + SDOperand SoftenFloatRes_FDIV(SDNode *N); SDOperand SoftenFloatRes_FMUL(SDNode *N); SDOperand SoftenFloatRes_FP_EXTEND(SDNode *N); SDOperand SoftenFloatRes_FP_ROUND(SDNode *N); diff --git a/test/CodeGen/ARM/2008-07-17-Fdiv.ll b/test/CodeGen/ARM/2008-07-17-Fdiv.ll new file mode 100644 index 00000000000..aa75970418a --- /dev/null +++ b/test/CodeGen/ARM/2008-07-17-Fdiv.ll @@ -0,0 +1,6 @@ +; RUN: llvm-as < %s | llc -march=arm + +define float @f(float %a, float %b) nounwind { + %tmp = fdiv float %a, %b + ret float %tmp +}