[llvm-commits] [llvm] r76987 - in /llvm/trunk: include/llvm/Target/TargetLowering.h lib/CodeGen/SelectionDAG/DAGCombiner.cpp lib/CodeGen/SelectionDAG/LegalizeDAG.cpp lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp lib/CodeGen/SelectionDAG/TargetLowering.cpp
Jakob Stoklund Olesen
stoklund at 2pi.dk
Fri Jul 24 11:22:59 PDT 2009
Author: stoklund
Date: Fri Jul 24 13:22:59 2009
New Revision: 76987
URL: http://llvm.org/viewvc/llvm-project?rev=76987&view=rev
Log:
Add support for promoting SETCC operations.
Modified:
llvm/trunk/include/llvm/Target/TargetLowering.h
llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
Modified: llvm/trunk/include/llvm/Target/TargetLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLowering.h?rev=76987&r1=76986&r2=76987&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Target/TargetLowering.h (original)
+++ llvm/trunk/include/llvm/Target/TargetLowering.h Fri Jul 24 13:22:59 2009
@@ -797,14 +797,17 @@
struct DAGCombinerInfo {
void *DC; // The DAG Combiner object.
bool BeforeLegalize;
+ bool BeforeLegalizeOps;
bool CalledByLegalizer;
public:
SelectionDAG &DAG;
- DAGCombinerInfo(SelectionDAG &dag, bool bl, bool cl, void *dc)
- : DC(dc), BeforeLegalize(bl), CalledByLegalizer(cl), DAG(dag) {}
+ DAGCombinerInfo(SelectionDAG &dag, bool bl, bool blo, bool cl, void *dc)
+ : DC(dc), BeforeLegalize(bl), BeforeLegalizeOps(blo),
+ CalledByLegalizer(cl), DAG(dag) {}
bool isBeforeLegalize() const { return BeforeLegalize; }
+ bool isBeforeLegalizeOps() const { return BeforeLegalizeOps; }
bool isCalledByLegalizer() const { return CalledByLegalizer; }
void AddToWorklist(SDNode *N);
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp?rev=76987&r1=76986&r2=76987&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/DAGCombiner.cpp Fri Jul 24 13:22:59 2009
@@ -802,7 +802,7 @@
// Expose the DAG combiner to the target combiner impls.
TargetLowering::DAGCombinerInfo
- DagCombineInfo(DAG, Level == Unrestricted, false, this);
+ DagCombineInfo(DAG, !LegalTypes, !LegalOperations, false, this);
RV = TLI.PerformDAGCombine(N, DagCombineInfo);
}
@@ -6005,7 +6005,7 @@
SDValue N1, ISD::CondCode Cond,
DebugLoc DL, bool foldBooleans) {
TargetLowering::DAGCombinerInfo
- DagCombineInfo(DAG, Level == Unrestricted, false, this);
+ DagCombineInfo(DAG, !LegalTypes, !LegalOperations, false, this);
return TLI.SimplifySetCC(VT, N0, N1, Cond, foldBooleans, DagCombineInfo, DL);
}
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=76987&r1=76986&r2=76987&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Fri Jul 24 13:22:59 2009
@@ -3086,12 +3086,14 @@
break;
}
case ISD::SETCC: {
- if (NVT.isInteger())
- llvm_unreachable("Cannot promote Legal Integer SETCC yet");
- else {
- Tmp1 = DAG.getNode(ISD::FP_EXTEND, dl, NVT, Node->getOperand(0));
- Tmp2 = DAG.getNode(ISD::FP_EXTEND, dl, NVT, Node->getOperand(1));
+ unsigned ExtOp = ISD::FP_EXTEND;
+ if (NVT.isInteger()) {
+ ISD::CondCode CCCode =
+ cast<CondCodeSDNode>(Node->getOperand(2))->get();
+ ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND;
}
+ Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0));
+ Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1));
Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0),
Tmp1, Tmp2, Node->getOperand(2)));
break;
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp?rev=76987&r1=76986&r2=76987&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp Fri Jul 24 13:22:59 2009
@@ -2067,7 +2067,7 @@
// NOTE: on targets without efficient SELECT of bools, we can always use
// this identity: (B1 ? B2 : B3) --> (B1 & B2)|(!B1&B3)
- TargetLowering::DAGCombinerInfo DagCombineInfo(DAG, false, true, NULL);
+ TargetLowering::DAGCombinerInfo DagCombineInfo(DAG, false, true, true, NULL);
SDValue Tmp1, Tmp2;
Tmp1 = TLI.SimplifySetCC(TLI.getSetCCResultType(LHSLo.getValueType()),
LHSLo, RHSLo, LowCC, false, DagCombineInfo, dl);
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp?rev=76987&r1=76986&r2=76987&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp Fri Jul 24 13:22:59 2009
@@ -1641,11 +1641,16 @@
case ISD::SETUGT:
case ISD::SETUGE:
case ISD::SETULT:
- case ISD::SETULE:
- return DAG.getSetCC(dl, VT, N0.getOperand(0),
- DAG.getConstant(APInt(C1).trunc(InSize),
- N0.getOperand(0).getValueType()),
- Cond);
+ case ISD::SETULE: {
+ MVT newVT = N0.getOperand(0).getValueType();
+ if (DCI.isBeforeLegalizeOps() ||
+ (isOperationLegal(ISD::SETCC, newVT) &&
+ getCondCodeAction(Cond, newVT)==Legal))
+ return DAG.getSetCC(dl, VT, N0.getOperand(0),
+ DAG.getConstant(APInt(C1).trunc(InSize), newVT),
+ Cond);
+ break;
+ }
default:
break; // todo, be more careful with signed comparisons
}
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