Use const qualifiers with TargetLowering. This eliminates several
const_casts, and it reinforces the design of the Target classes being
immutable.
SelectionDAGISel::IsLegalToFold is now a static member function, because
PIC16 uses it in an unconventional way. There is more room for API
cleanup here.
And PIC16's AsmPrinter no longer uses TargetLowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101635 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16ISelLowering.h b/lib/Target/PIC16/PIC16ISelLowering.h
index e88fc2f..5ddff9e 100644
--- a/lib/Target/PIC16/PIC16ISelLowering.h
+++ b/lib/Target/PIC16/PIC16ISelLowering.h
@@ -18,7 +18,6 @@
#include "PIC16.h"
#include "PIC16Subtarget.h"
#include "llvm/CodeGen/SelectionDAG.h"
-#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/Target/TargetLowering.h"
#include <map>
@@ -85,53 +84,53 @@
/// getSetCCResultType - Return the ISD::SETCC ValueType
virtual MVT::SimpleValueType getSetCCResultType(EVT ValType) const;
virtual MVT::SimpleValueType getCmpLibcallReturnType() const;
- SDValue LowerShift(SDValue Op, SelectionDAG &DAG);
- SDValue LowerMUL(SDValue Op, SelectionDAG &DAG);
- SDValue LowerADD(SDValue Op, SelectionDAG &DAG);
- SDValue LowerSUB(SDValue Op, SelectionDAG &DAG);
- SDValue LowerBinOp(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerShift(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerMUL(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerADD(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSUB(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerBinOp(SDValue Op, SelectionDAG &DAG) const;
// Call returns
SDValue
LowerDirectCallReturn(SDValue RetLabel, SDValue Chain, SDValue InFlag,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
- SmallVectorImpl<SDValue> &InVals);
+ SmallVectorImpl<SDValue> &InVals) const;
SDValue
LowerIndirectCallReturn(SDValue Chain, SDValue InFlag,
SDValue DataAddr_Lo, SDValue DataAddr_Hi,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
- SmallVectorImpl<SDValue> &InVals);
+ SmallVectorImpl<SDValue> &InVals) const;
// Call arguments
SDValue
LowerDirectCallArguments(SDValue ArgLabel, SDValue Chain, SDValue InFlag,
const SmallVectorImpl<ISD::OutputArg> &Outs,
- DebugLoc dl, SelectionDAG &DAG);
+ DebugLoc dl, SelectionDAG &DAG) const;
SDValue
LowerIndirectCallArguments(SDValue Chain, SDValue InFlag,
SDValue DataAddr_Lo, SDValue DataAddr_Hi,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<ISD::InputArg> &Ins,
- DebugLoc dl, SelectionDAG &DAG);
+ DebugLoc dl, SelectionDAG &DAG) const;
- SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG);
- SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG);
+ SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
SDValue getPIC16Cmp(SDValue LHS, SDValue RHS, unsigned OrigCC, SDValue &CC,
- SelectionDAG &DAG, DebugLoc dl);
+ SelectionDAG &DAG, DebugLoc dl) const;
virtual MachineBasicBlock *EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *MBB,
DenseMap<MachineBasicBlock*, MachineBasicBlock*> *EM) const;
- virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
+ virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
virtual void ReplaceNodeResults(SDNode *N,
SmallVectorImpl<SDValue> &Results,
- SelectionDAG &DAG);
+ SelectionDAG &DAG) const;
virtual void LowerOperationWrapper(SDNode *N,
SmallVectorImpl<SDValue> &Results,
- SelectionDAG &DAG);
+ SelectionDAG &DAG) const;
virtual SDValue
LowerFormalArguments(SDValue Chain,
@@ -139,7 +138,7 @@
bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
- SmallVectorImpl<SDValue> &InVals);
+ SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerCall(SDValue Chain, SDValue Callee,
@@ -147,19 +146,19 @@
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
- SmallVectorImpl<SDValue> &InVals);
+ SmallVectorImpl<SDValue> &InVals) const;
virtual SDValue
LowerReturn(SDValue Chain,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
- DebugLoc dl, SelectionDAG &DAG);
+ DebugLoc dl, SelectionDAG &DAG) const;
- SDValue ExpandStore(SDNode *N, SelectionDAG &DAG);
- SDValue ExpandLoad(SDNode *N, SelectionDAG &DAG);
- SDValue ExpandGlobalAddress(SDNode *N, SelectionDAG &DAG);
- SDValue ExpandExternalSymbol(SDNode *N, SelectionDAG &DAG);
- SDValue ExpandFrameIndex(SDNode *N, SelectionDAG &DAG);
+ SDValue ExpandStore(SDNode *N, SelectionDAG &DAG) const;
+ SDValue ExpandLoad(SDNode *N, SelectionDAG &DAG) const;
+ SDValue ExpandGlobalAddress(SDNode *N, SelectionDAG &DAG) const;
+ SDValue ExpandExternalSymbol(SDNode *N, SelectionDAG &DAG) const;
+ SDValue ExpandFrameIndex(SDNode *N, SelectionDAG &DAG) const;
SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
SDValue PerformPIC16LoadCombine(SDNode *N, DAGCombinerInfo &DCI) const;
@@ -169,10 +168,10 @@
// already exists for the FI then it returns the same else it creates the
// new offset and returns.
unsigned GetTmpOffsetForFI(unsigned FI, unsigned slot_size,
- MachineFunction &MF);
- void ResetTmpOffsetMap(SelectionDAG &DAG);
+ MachineFunction &MF) const;
+ void ResetTmpOffsetMap(SelectionDAG &DAG) const;
void InitReservedFrameCount(const Function *F,
- SelectionDAG &DAG);
+ SelectionDAG &DAG) const;
/// getFunctionAlignment - Return the Log2 alignment of this function.
virtual unsigned getFunctionAlignment(const Function *) const {
@@ -182,43 +181,45 @@
private:
// If the Node is a BUILD_PAIR representing a direct Address,
// then this function will return true.
- bool isDirectAddress(const SDValue &Op);
+ bool isDirectAddress(const SDValue &Op) const;
// If the Node is a DirectAddress in ROM_SPACE then this
// function will return true
- bool isRomAddress(const SDValue &Op);
+ bool isRomAddress(const SDValue &Op) const;
// Extract the Lo and Hi component of Op.
void GetExpandedParts(SDValue Op, SelectionDAG &DAG, SDValue &Lo,
- SDValue &Hi);
+ SDValue &Hi) const;
// Load pointer can be a direct or indirect address. In PIC16 direct
// addresses need Banksel and Indirect addresses need to be loaded to
// FSR first. Handle address specific cases here.
void LegalizeAddress(SDValue Ptr, SelectionDAG &DAG, SDValue &Chain,
- SDValue &NewPtr, unsigned &Offset, DebugLoc dl);
+ SDValue &NewPtr, unsigned &Offset, DebugLoc dl) const;
// FrameIndex should be broken down into ExternalSymbol and FrameOffset.
void LegalizeFrameIndex(SDValue Op, SelectionDAG &DAG, SDValue &ES,
- int &Offset);
+ int &Offset) const;
// For indirect calls data address of the callee frame need to be
// extracted. This function fills the arguments DataAddr_Lo and
// DataAddr_Hi with the address of the callee frame.
void GetDataAddress(DebugLoc dl, SDValue Callee, SDValue &Chain,
SDValue &DataAddr_Lo, SDValue &DataAddr_Hi,
- SelectionDAG &DAG);
+ SelectionDAG &DAG) const;
// We can not have both operands of a binary operation in W.
// This function is used to put one operand on stack and generate a load.
- SDValue ConvertToMemOperand(SDValue Op, SelectionDAG &DAG, DebugLoc dl);
+ SDValue ConvertToMemOperand(SDValue Op, SelectionDAG &DAG,
+ DebugLoc dl) const;
// This function checks if we need to put an operand of an operation on
// stack and generate a load or not.
// DAG parameter is required to access DAG information during
// analysis.
- bool NeedToConvertToMemOp(SDValue Op, unsigned &MemOp, SelectionDAG &DAG);
+ bool NeedToConvertToMemOp(SDValue Op, unsigned &MemOp,
+ SelectionDAG &DAG) const;
/// Subtarget - Keep a pointer to the PIC16Subtarget around so that we can
/// make the right decision when generating code for different targets.
@@ -231,20 +232,15 @@
// To set and retrieve the lib call names.
void setPIC16LibcallName(PIC16ISD::PIC16Libcall Call, const char *Name);
- const char *getPIC16LibcallName(PIC16ISD::PIC16Libcall Call);
+ const char *getPIC16LibcallName(PIC16ISD::PIC16Libcall Call) const;
// Make PIC16 Libcall.
SDValue MakePIC16Libcall(PIC16ISD::PIC16Libcall Call, EVT RetVT,
const SDValue *Ops, unsigned NumOps, bool isSigned,
- SelectionDAG &DAG, DebugLoc dl);
+ SelectionDAG &DAG, DebugLoc dl) const;
// Check if operation has a direct load operand.
- inline bool isDirectLoad(const SDValue Op);
-
- public:
- // Keep a pointer to SelectionDAGISel to access its public
- // interface (It is required during legalization)
- SelectionDAGISel *ISel;
+ inline bool isDirectLoad(const SDValue Op) const;
};
} // namespace llvm