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Softfloat support for FDIV. Patch by

Browse Source 
Richard Pennington.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53773 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2008-07-18 21:18:48 +00:00
parent f8ac645c59
commit c3e26727c1
3 changed files with 20 additions and 0 deletions
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13
lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
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@ -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)),

1
lib/CodeGen/SelectionDAG/LegalizeTypes.h
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@ -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);

6
test/CodeGen/ARM/2008-07-17-Fdiv.ll Normal file
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@ -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
}