//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Chris Lattner and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
class VISIBILITY_HIDDEN DAGTypeLegalizer {
TargetLowering &TLI;
SelectionDAG &DAG;
-
+public:
// NodeIDFlags - This pass uses the NodeID on the SDNodes to hold information
// about the state of the node. The enum has all the values.
enum NodeIDFlags {
// 1+ - This is a node which has this many unlegalized operands.
};
-
+private:
enum LegalizeAction {
Legal, // The target natively supports this type.
Promote, // This type should be executed in a larger type.
- Expand // This type should be split into two types of half the size.
+ Expand, // This type should be split into two types of half the size.
+ FloatToInt, // Convert a floating point type to an integer of the same size.
+ Scalarize, // Replace this one-element vector type with its element type.
+ Split // This vector type should be split into smaller vectors.
};
-
+
/// ValueTypeActions - This is a bitvector that contains two bits for each
/// simple value type, where the two bits correspond to the LegalizeAction
- /// enum. This can be queried with "getTypeAction(VT)".
+ /// enum from TargetLowering. This can be queried with "getTypeAction(VT)".
TargetLowering::ValueTypeActionImpl ValueTypeActions;
/// getTypeAction - Return how we should legalize values of this type, either
- /// it is already legal or we need to expand it into multiple registers of
- /// smaller integer type, or we need to promote it to a larger type.
+ /// it is already legal, or we need to promote it to a larger integer type, or
+ /// we need to expand it into multiple registers of a smaller integer type, or
+ /// we need to scalarize a one-element vector type into the element type, or
+ /// we need to split a vector type into smaller vector types.
LegalizeAction getTypeAction(MVT::ValueType VT) const {
- return (LegalizeAction)ValueTypeActions.getTypeAction(VT);
+ switch (ValueTypeActions.getTypeAction(VT)) {
+ default:
+ assert(false && "Unknown legalize action!");
+ case TargetLowering::Legal:
+ return Legal;
+ case TargetLowering::Promote:
+ return Promote;
+ case TargetLowering::Expand:
+ // Expand can mean
+ // 1) split scalar in half, 2) convert a float to an integer,
+ // 3) scalarize a single-element vector, 4) split a vector in two.
+ if (!MVT::isVector(VT)) {
+ if (MVT::getSizeInBits(VT) ==
+ MVT::getSizeInBits(TLI.getTypeToTransformTo(VT)))
+ return FloatToInt;
+ else
+ return Expand;
+ } else if (MVT::getVectorNumElements(VT) == 1) {
+ return Scalarize;
+ } else {
+ return Split;
+ }
+ }
}
-
+
/// isTypeLegal - Return true if this type is legal on this target.
- ///
bool isTypeLegal(MVT::ValueType VT) const {
- return getTypeAction(VT) == Legal;
+ return ValueTypeActions.getTypeAction(VT) == TargetLowering::Legal;
}
-
- SDOperand getIntPtrConstant(uint64_t Val) {
- return DAG.getConstant(Val, TLI.getPointerTy());
- }
-
+
/// PromotedNodes - For nodes that are below legal width, this map indicates
/// what promoted value to use.
- DenseMap<SDOperand, SDOperand> PromotedNodes;
+ DenseMap<SDOperandImpl, SDOperand> PromotedNodes;
/// ExpandedNodes - For nodes that need to be expanded this map indicates
/// which operands are the expanded version of the input.
- DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > ExpandedNodes;
+ DenseMap<SDOperandImpl, std::pair<SDOperand, SDOperand> > ExpandedNodes;
+
+ /// FloatToIntedNodes - For floating point nodes converted to integers of
+ /// the same size, this map indicates the converted value to use.
+ DenseMap<SDOperandImpl, SDOperand> FloatToIntedNodes;
/// ScalarizedNodes - For nodes that are <1 x ty>, this map indicates the
/// scalar value of type 'ty' to use.
- DenseMap<SDOperand, SDOperand> ScalarizedNodes;
+ DenseMap<SDOperandImpl, SDOperand> ScalarizedNodes;
/// SplitNodes - For nodes that need to be split this map indicates
/// which operands are the expanded version of the input.
- DenseMap<SDOperand, std::pair<SDOperand, SDOperand> > SplitNodes;
+ DenseMap<SDOperandImpl, std::pair<SDOperand, SDOperand> > SplitNodes;
/// ReplacedNodes - For nodes that have been replaced with another,
/// indicates the replacement node to use.
- DenseMap<SDOperand, SDOperand> ReplacedNodes;
+ DenseMap<SDOperandImpl, SDOperand> ReplacedNodes;
/// Worklist - This defines a worklist of nodes to process. In order to be
/// pushed onto this worklist, all operands of a node must have already been
void run();
+ /// ReanalyzeNode - Recompute the NodeID and correct processed operands
+ /// for the specified node, adding it to the worklist if ready.
+ void ReanalyzeNode(SDNode *N) {
+ N->setNodeId(NewNode);
+ AnalyzeNewNode(N);
+ }
+
private:
- void MarkNewNodes(SDNode *N);
-
+ void AnalyzeNewNode(SDNode *&N);
+
void ReplaceValueWith(SDOperand From, SDOperand To);
void ReplaceNodeWith(SDNode *From, SDNode *To);
void RemapNode(SDOperand &N);
// Common routines.
+ SDOperand BitConvertToInteger(SDOperand Op);
SDOperand CreateStackStoreLoad(SDOperand Op, MVT::ValueType DestVT);
SDOperand HandleMemIntrinsic(SDNode *N);
- void SplitOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi);
+ SDOperand JoinIntegers(SDOperand Lo, SDOperand Hi);
+ void SplitInteger(SDOperand Op, SDOperand &Lo, SDOperand &Hi);
+ void SplitInteger(SDOperand Op, MVT::ValueType LoVT, MVT::ValueType HiVT,
+ SDOperand &Lo, SDOperand &Hi);
//===--------------------------------------------------------------------===//
// Promotion Support: LegalizeTypesPromote.cpp
// Result Promotion.
void PromoteResult(SDNode *N, unsigned ResNo);
- SDOperand PromoteResult_UNDEF(SDNode *N);
+ SDOperand PromoteResult_BIT_CONVERT(SDNode *N);
+ SDOperand PromoteResult_BUILD_PAIR(SDNode *N);
SDOperand PromoteResult_Constant(SDNode *N);
- SDOperand PromoteResult_TRUNCATE(SDNode *N);
- SDOperand PromoteResult_INT_EXTEND(SDNode *N);
+ SDOperand PromoteResult_CTLZ(SDNode *N);
+ SDOperand PromoteResult_CTPOP(SDNode *N);
+ SDOperand PromoteResult_CTTZ(SDNode *N);
+ SDOperand PromoteResult_EXTRACT_VECTOR_ELT(SDNode *N);
SDOperand PromoteResult_FP_ROUND(SDNode *N);
SDOperand PromoteResult_FP_TO_XINT(SDNode *N);
- SDOperand PromoteResult_SETCC(SDNode *N);
+ SDOperand PromoteResult_INT_EXTEND(SDNode *N);
SDOperand PromoteResult_LOAD(LoadSDNode *N);
- SDOperand PromoteResult_SimpleIntBinOp(SDNode *N);
SDOperand PromoteResult_SDIV(SDNode *N);
- SDOperand PromoteResult_UDIV(SDNode *N);
+ SDOperand PromoteResult_SELECT (SDNode *N);
+ SDOperand PromoteResult_SELECT_CC(SDNode *N);
+ SDOperand PromoteResult_SETCC(SDNode *N);
SDOperand PromoteResult_SHL(SDNode *N);
+ SDOperand PromoteResult_SimpleIntBinOp(SDNode *N);
SDOperand PromoteResult_SRA(SDNode *N);
SDOperand PromoteResult_SRL(SDNode *N);
- SDOperand PromoteResult_SELECT (SDNode *N);
- SDOperand PromoteResult_SELECT_CC(SDNode *N);
-
+ SDOperand PromoteResult_TRUNCATE(SDNode *N);
+ SDOperand PromoteResult_UDIV(SDNode *N);
+ SDOperand PromoteResult_UNDEF(SDNode *N);
+
// Operand Promotion.
bool PromoteOperand(SDNode *N, unsigned OperandNo);
SDOperand PromoteOperand_ANY_EXTEND(SDNode *N);
- SDOperand PromoteOperand_ZERO_EXTEND(SDNode *N);
- SDOperand PromoteOperand_SIGN_EXTEND(SDNode *N);
- SDOperand PromoteOperand_TRUNCATE(SDNode *N);
+ SDOperand PromoteOperand_BUILD_PAIR(SDNode *N);
+ SDOperand PromoteOperand_BR_CC(SDNode *N, unsigned OpNo);
+ SDOperand PromoteOperand_BRCOND(SDNode *N, unsigned OpNo);
+ SDOperand PromoteOperand_BUILD_VECTOR(SDNode *N);
SDOperand PromoteOperand_FP_EXTEND(SDNode *N);
SDOperand PromoteOperand_FP_ROUND(SDNode *N);
SDOperand PromoteOperand_INT_TO_FP(SDNode *N);
+ SDOperand PromoteOperand_INSERT_VECTOR_ELT(SDNode *N, unsigned OpNo);
+ SDOperand PromoteOperand_MEMBARRIER(SDNode *N);
+ SDOperand PromoteOperand_RET(SDNode *N, unsigned OpNo);
SDOperand PromoteOperand_SELECT(SDNode *N, unsigned OpNo);
- SDOperand PromoteOperand_BRCOND(SDNode *N, unsigned OpNo);
- SDOperand PromoteOperand_BR_CC(SDNode *N, unsigned OpNo);
SDOperand PromoteOperand_SETCC(SDNode *N, unsigned OpNo);
+ SDOperand PromoteOperand_SIGN_EXTEND(SDNode *N);
SDOperand PromoteOperand_STORE(StoreSDNode *N, unsigned OpNo);
-
+ SDOperand PromoteOperand_TRUNCATE(SDNode *N);
+ SDOperand PromoteOperand_ZERO_EXTEND(SDNode *N);
+
void PromoteSetCCOperands(SDOperand &LHS,SDOperand &RHS, ISD::CondCode Code);
//===--------------------------------------------------------------------===//
// Result Expansion.
void ExpandResult(SDNode *N, unsigned ResNo);
- void ExpandResult_UNDEF (SDNode *N, SDOperand &Lo, SDOperand &Hi);
- void ExpandResult_Constant (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_ANY_EXTEND (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_AssertZext (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_BIT_CONVERT(SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandResult_BUILD_PAIR (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_Constant (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_CTLZ (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_CTPOP (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_CTTZ (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_EXTRACT_VECTOR_ELT(SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_LOAD (LoadSDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandResult_MERGE_VALUES(SDNode *N, SDOperand &Lo, SDOperand &Hi);
- void ExpandResult_ANY_EXTEND (SDNode *N, SDOperand &Lo, SDOperand &Hi);
- void ExpandResult_ZERO_EXTEND(SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandResult_SIGN_EXTEND(SDNode *N, SDOperand &Lo, SDOperand &Hi);
- void ExpandResult_BIT_CONVERT(SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandResult_SIGN_EXTEND_INREG(SDNode *N, SDOperand &Lo, SDOperand &Hi);
- void ExpandResult_LOAD (LoadSDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_TRUNCATE (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_UNDEF (SDNode *N, SDOperand &Lo, SDOperand &Hi);
+ void ExpandResult_ZERO_EXTEND(SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandResult_Logical (SDNode *N, SDOperand &Lo, SDOperand &Hi);
void ExpandResult_BSWAP (SDNode *N, SDOperand &Lo, SDOperand &Hi);
// Operand Expansion.
bool ExpandOperand(SDNode *N, unsigned OperandNo);
- SDOperand ExpandOperand_TRUNCATE(SDNode *N);
SDOperand ExpandOperand_BIT_CONVERT(SDNode *N);
- SDOperand ExpandOperand_UINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
- SDOperand ExpandOperand_SINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
+ SDOperand ExpandOperand_BR_CC(SDNode *N);
+ SDOperand ExpandOperand_BUILD_VECTOR(SDNode *N);
SDOperand ExpandOperand_EXTRACT_ELEMENT(SDNode *N);
SDOperand ExpandOperand_SETCC(SDNode *N);
+ SDOperand ExpandOperand_SINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
SDOperand ExpandOperand_STORE(StoreSDNode *N, unsigned OpNo);
-
+ SDOperand ExpandOperand_TRUNCATE(SDNode *N);
+ SDOperand ExpandOperand_UINT_TO_FP(SDOperand Source, MVT::ValueType DestTy);
+
void ExpandSetCCOperands(SDOperand &NewLHS, SDOperand &NewRHS,
ISD::CondCode &CCCode);
+ //===--------------------------------------------------------------------===//
+ // Float to Integer Conversion Support: LegalizeTypesFloatToInt.cpp
+ //===--------------------------------------------------------------------===//
+
+ SDOperand GetIntegerOp(SDOperand Op) {
+ SDOperand &IntegerOp = FloatToIntedNodes[Op];
+ RemapNode(IntegerOp);
+ assert(IntegerOp.Val && "Operand wasn't converted to integer?");
+ return IntegerOp;
+ }
+ void SetIntegerOp(SDOperand Op, SDOperand Result);
+
+ // Result Float to Integer Conversion.
+ void FloatToIntResult(SDNode *N, unsigned OpNo);
+ SDOperand FloatToIntRes_BIT_CONVERT(SDNode *N);
+ SDOperand FloatToIntRes_BUILD_PAIR(SDNode *N);
+ SDOperand FloatToIntRes_FCOPYSIGN(SDNode *N);
+
+ // Operand Float to Integer Conversion.
+ bool FloatToIntOperand(SDNode *N, unsigned OpNo);
+ SDOperand FloatToIntOp_BIT_CONVERT(SDNode *N);
+
//===--------------------------------------------------------------------===//
// Scalarization Support: LegalizeTypesScalarize.cpp
//===--------------------------------------------------------------------===//
// Result Vector Scalarization: <1 x ty> -> ty.
void ScalarizeResult(SDNode *N, unsigned OpNo);
- SDOperand ScalarizeRes_UNDEF(SDNode *N);
- SDOperand ScalarizeRes_LOAD(LoadSDNode *N);
SDOperand ScalarizeRes_BinOp(SDNode *N);
SDOperand ScalarizeRes_UnaryOp(SDNode *N);
- SDOperand ScalarizeRes_FPOWI(SDNode *N);
- SDOperand ScalarizeRes_VECTOR_SHUFFLE(SDNode *N);
+
SDOperand ScalarizeRes_BIT_CONVERT(SDNode *N);
+ SDOperand ScalarizeRes_FPOWI(SDNode *N);
+ SDOperand ScalarizeRes_INSERT_VECTOR_ELT(SDNode *N);
+ SDOperand ScalarizeRes_LOAD(LoadSDNode *N);
SDOperand ScalarizeRes_SELECT(SDNode *N);
-
+ SDOperand ScalarizeRes_UNDEF(SDNode *N);
+ SDOperand ScalarizeRes_VECTOR_SHUFFLE(SDNode *N);
+
// Operand Vector Scalarization: <1 x ty> -> ty.
bool ScalarizeOperand(SDNode *N, unsigned OpNo);
- SDOperand ScalarizeOp_EXTRACT_VECTOR_ELT(SDNode *N, unsigned OpNo);
+ SDOperand ScalarizeOp_BIT_CONVERT(SDNode *N);
+ SDOperand ScalarizeOp_EXTRACT_VECTOR_ELT(SDNode *N);
+ SDOperand ScalarizeOp_STORE(StoreSDNode *N, unsigned OpNo);
//===--------------------------------------------------------------------===//
// Vector Splitting Support: LegalizeTypesSplit.cpp
void SplitRes_FPOWI(SDNode *N, SDOperand &Lo, SDOperand &Hi);
void SplitRes_SELECT(SDNode *N, SDOperand &Lo, SDOperand &Hi);
- // Operand Vector Scalarization: <128 x ty> -> 2 x <64 x ty>.
+ // Operand Vector Splitting: <128 x ty> -> 2 x <64 x ty>.
bool SplitOperand(SDNode *N, unsigned OpNo);
-
- SDOperand SplitOperand_STORE(StoreSDNode *N, unsigned OpNo);
+
+ SDOperand SplitOp_BIT_CONVERT(SDNode *N);
+ SDOperand SplitOp_EXTRACT_SUBVECTOR(SDNode *N);
+ SDOperand SplitOp_EXTRACT_VECTOR_ELT(SDNode *N);
+ SDOperand SplitOp_RET(SDNode *N, unsigned OpNo);
+ SDOperand SplitOp_STORE(StoreSDNode *N, unsigned OpNo);
+ SDOperand SplitOp_VECTOR_SHUFFLE(SDNode *N, unsigned OpNo);
};
} // end namespace llvm.
projects / oota-llvm.git / blobdiff