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Expand FP compares to soft-fp call(s)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32590 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-12-15 02:59:56 +00:00
parent ef89c5594a
commit 2b49c50083
1 changed files with 102 additions and 7 deletions
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109
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -2011,10 +2011,10 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
isCustom = true;
// FALLTHROUGH.
case TargetLowering::Legal:
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, Node->getOperand(2));
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, Tmp3);
if (isCustom) {
Tmp3 = TLI.LowerOperation(Result, DAG);
if (Tmp3.Val) Result = Tmp3;
Tmp4 = TLI.LowerOperation(Result, DAG);
if (Tmp4.Val) Result = Tmp4;
}
break;
case TargetLowering::Promote: {
@ -2045,7 +2045,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
}
Tmp1 = LegalizeOp(Tmp1);
Tmp2 = LegalizeOp(Tmp2);
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, Node->getOperand(2));
Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, Tmp3);
Result = LegalizeOp(Result);
break;
}
@ -2055,7 +2055,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
MVT::ValueType VT = Node->getValueType(0);
Result = DAG.getNode(ISD::SELECT_CC, VT, Tmp1, Tmp2,
DAG.getConstant(1, VT), DAG.getConstant(0, VT),
Node->getOperand(2));
Tmp3);
break;
}
break;
@ -3533,10 +3533,104 @@ void SelectionDAGLegalize::LegalizeSetCCOperands(SDOperand &LHS,
}
}
break;
case Expand:
case Expand: {
MVT::ValueType VT = LHS.getValueType();
if (VT == MVT::f32 || VT == MVT::f64) {
// Expand into one or more soft-fp libcall(s).
const char *FnName1 = NULL, *FnName2 = NULL;
ISD::CondCode CC1, CC2;
switch (cast<CondCodeSDNode>(CC)->get()) {
case ISD::SETEQ:
case ISD::SETOEQ:
FnName1 = (VT == MVT::f32) ? "__eqsf2" : "__eqdf2";
CC1 = ISD::SETEQ;
break;
case ISD::SETNE:
case ISD::SETUNE:
FnName1 = (VT == MVT::f32) ? "__nesf2" : "__nedf2";
CC1 = ISD::SETNE;
break;
case ISD::SETGE:
case ISD::SETOGE:
FnName1 = (VT == MVT::f32) ? "__gesf2" : "__gedf2";
CC1 = ISD::SETGE;
break;
case ISD::SETLT:
case ISD::SETOLT:
FnName1 = (VT == MVT::f32) ? "__ltsf2" : "__ltdf2";
CC1 = ISD::SETLT;
break;
case ISD::SETLE:
case ISD::SETOLE:
FnName1 = (VT == MVT::f32) ? "__lesf2" : "__ledf2";
CC1 = ISD::SETLE;
break;
case ISD::SETGT:
case ISD::SETOGT:
FnName1 = (VT == MVT::f32) ? "__gtsf2" : "__gtdf2";
CC1 = ISD::SETGT;
break;
case ISD::SETUO:
case ISD::SETO:
FnName1 = (VT == MVT::f32) ? "__unordsf2" : "__unorddf2";
CC1 = cast<CondCodeSDNode>(CC)->get() == ISD::SETO
? ISD::SETEQ : ISD::SETNE;
break;
default:
FnName1 = (VT == MVT::f32) ? "__unordsf2" : "__unorddf2";
CC1 = ISD::SETNE;
switch (cast<CondCodeSDNode>(CC)->get()) {
case ISD::SETONE:
// SETONE = SETOLT | SETOGT
FnName1 = (VT == MVT::f32) ? "__ltsf2" : "__ltdf2";
CC1 = ISD::SETLT;
// Fallthrough
case ISD::SETUGT:
FnName2 = (VT == MVT::f32) ? "__gtsf2" : "__gtdf2";
CC2 = ISD::SETGT;
break;
case ISD::SETUGE:
FnName2 = (VT == MVT::f32) ? "__gesf2" : "__gedf2";
CC2 = ISD::SETGE;
break;
case ISD::SETULT:
FnName2 = (VT == MVT::f32) ? "__ltsf2" : "__ltdf2";
CC2 = ISD::SETLT;
break;
case ISD::SETULE:
FnName2 = (VT == MVT::f32) ? "__lesf2" : "__ledf2";
CC2 = ISD::SETLE;
break;
case ISD::SETUEQ:
FnName2 = (VT == MVT::f32) ? "__eqsf2" : "__eqdf2";
CC2 = ISD::SETEQ;
break;
default: assert(0 && "Unsupported FP setcc!");
}
}
SDOperand Dummy;
Tmp1 = ExpandLibCall(FnName1,
DAG.getNode(ISD::MERGE_VALUES, VT, LHS, RHS).Val, Dummy);
Tmp2 = DAG.getConstant(0, MVT::i32);
CC = DAG.getCondCode(CC1);
if (FnName2) {
Tmp1 = DAG.getNode(ISD::SETCC, TLI.getSetCCResultTy(), Tmp1, Tmp2, CC);
LHS = ExpandLibCall(FnName2,
DAG.getNode(ISD::MERGE_VALUES, VT, LHS, RHS).Val, Dummy);
Tmp2 = DAG.getNode(ISD::SETCC, TLI.getSetCCResultTy(), LHS, Tmp2,
DAG.getCondCode(CC2));
Tmp1 = DAG.getNode(ISD::OR, Tmp1.getValueType(), Tmp1, Tmp2);
Tmp2 = SDOperand();
}
LHS = Tmp1;
RHS = Tmp2;
return;
}
SDOperand LHSLo, LHSHi, RHSLo, RHSHi;
ExpandOp(LHS, LHSLo, LHSHi);
ExpandOp(RHS, RHSLo, RHSHi);
ExpandOp(RHS, RHSLo, RHSHi);
switch (cast<CondCodeSDNode>(CC)->get()) {
case ISD::SETEQ:
case ISD::SETNE:
@ -3596,6 +3690,7 @@ void SelectionDAGLegalize::LegalizeSetCCOperands(SDOperand &LHS,
Tmp2 = SDOperand();
}
}
}
LHS = Tmp1;
RHS = Tmp2;
}