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Change the FoldingSetNodeID usage for objects which carry

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alignment and volatility information, such as loads and
stores, to reduce the number of integer values added to
the FoldingSetNodeID.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55058 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-08-20 15:58:01 +00:00
parent cb0fe7c226
commit b8d2f550b8
4 changed files with 46 additions and 37 deletions
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5
include/llvm/CodeGen/MachineMemOperand.h
View File

@ -19,6 +19,7 @@
namespace llvm {
class Value;
class FoldingSetNodeID;
//===----------------------------------------------------------------------===//
/// MachineMemOperand - A description of a memory reference used in the backend.
@ -74,6 +75,10 @@ public:
bool isLoad() const { return Flags & MOLoad; }
bool isStore() const { return Flags & MOStore; }
bool isVolatile() const { return Flags & MOVolatile; }
/// Profile - Gather unique data for the object.
///
void Profile(FoldingSetNodeID &ID) const;
};
} // End llvm namespace

6
include/llvm/CodeGen/SelectionDAGNodes.h
View File

@ -1266,7 +1266,7 @@ public:
/// Profile - Gather unique data for the node.
///
void Profile(FoldingSetNodeID &ID);
void Profile(FoldingSetNodeID &ID) const;
protected:
friend class SelectionDAG;
@ -1499,6 +1499,10 @@ public:
return getOperand(getOpcode() == ISD::STORE ? 2 : 1);
}
/// getRawFlags - Represent the flags as a bunch of bits.
///
unsigned getRawFlags() const { return Flags; }
// Methods to support isa and dyn_cast
static bool classof(const MemSDNode *) { return true; }
static bool classof(const SDNode *N) {

10
lib/CodeGen/MachineInstr.cpp
View File

@ -24,6 +24,7 @@
#include "llvm/Support/LeakDetector.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Streams.h"
#include "llvm/ADT/FoldingSet.h"
#include <ostream>
using namespace llvm;
@ -250,6 +251,15 @@ MachineMemOperand::MachineMemOperand(const Value *v, unsigned int f,
assert((isLoad() || isStore()) && "Not a load/store!");
}
/// Profile - Gather unique data for the object.
///
void MachineMemOperand::Profile(FoldingSetNodeID &ID) const {
ID.AddInteger(Offset);
ID.AddInteger(Size);
ID.AddPointer(V);
ID.AddInteger(Flags);
}
//===----------------------------------------------------------------------===//
// MachineInstr Implementation
//===----------------------------------------------------------------------===//

62
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -351,7 +351,7 @@ static void AddNodeIDNode(FoldingSetNodeID &ID,
/// AddNodeIDNode - Generic routine for adding a nodes info to the NodeID
/// data.
static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
static void AddNodeIDNode(FoldingSetNodeID &ID, const SDNode *N) {
AddNodeIDOpcode(ID, N->getOpcode());
// Add the return value info.
AddNodeIDValueTypes(ID, N->getVTList());
@ -377,7 +377,7 @@ static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
case ISD::GlobalAddress:
case ISD::TargetGlobalTLSAddress:
case ISD::GlobalTLSAddress: {
GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(N);
const GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(N);
ID.AddPointer(GA->getGlobal());
ID.AddInteger(GA->getOffset());
break;
@ -400,11 +400,7 @@ static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
break;
case ISD::MEMOPERAND: {
const MachineMemOperand &MO = cast<MemOperandSDNode>(N)->MO;
ID.AddPointer(MO.getValue());
ID.AddInteger(MO.getFlags());
ID.AddInteger(MO.getOffset());
ID.AddInteger(MO.getSize());
ID.AddInteger(MO.getAlignment());
MO.Profile(ID);
break;
}
case ISD::FrameIndex:
@ -417,7 +413,7 @@ static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
break;
case ISD::ConstantPool:
case ISD::TargetConstantPool: {
ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(N);
const ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(N);
ID.AddInteger(CP->getAlignment());
ID.AddInteger(CP->getOffset());
if (CP->isMachineConstantPoolEntry())
@ -427,21 +423,19 @@ static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
break;
}
case ISD::LOAD: {
LoadSDNode *LD = cast<LoadSDNode>(N);
const LoadSDNode *LD = cast<LoadSDNode>(N);
ID.AddInteger(LD->getAddressingMode());
ID.AddInteger(LD->getExtensionType());
ID.AddInteger(LD->getMemoryVT().getRawBits());
ID.AddInteger(LD->getAlignment());
ID.AddInteger(LD->isVolatile());
ID.AddInteger(LD->getRawFlags());
break;
}
case ISD::STORE: {
StoreSDNode *ST = cast<StoreSDNode>(N);
const StoreSDNode *ST = cast<StoreSDNode>(N);
ID.AddInteger(ST->getAddressingMode());
ID.AddInteger(ST->isTruncatingStore());
ID.AddInteger(ST->getMemoryVT().getRawBits());
ID.AddInteger(ST->getAlignment());
ID.AddInteger(ST->isVolatile());
ID.AddInteger(ST->getRawFlags());
break;
}
case ISD::ATOMIC_CMP_SWAP:
@ -456,14 +450,20 @@ static void AddNodeIDNode(FoldingSetNodeID &ID, SDNode *N) {
case ISD::ATOMIC_LOAD_MAX:
case ISD::ATOMIC_LOAD_UMIN:
case ISD::ATOMIC_LOAD_UMAX: {
AtomicSDNode *AT = cast<AtomicSDNode>(N);
ID.AddInteger(AT->getAlignment());
ID.AddInteger(AT->isVolatile());
const AtomicSDNode *AT = cast<AtomicSDNode>(N);
ID.AddInteger(AT->getRawFlags());
break;
}
} // end switch (N->getOpcode())
}
/// encodeMemSDNodeFlags - Generic routine for computing a value for use in
/// the CSE map that carries both alignment and volatility information.
///
static unsigned encodeMemSDNodeFlags(bool isVolatile, unsigned Alignment) {
return isVolatile | ((Log2_32(Alignment) + 1) << 1);
}
//===----------------------------------------------------------------------===//
// SelectionDAG Class
//===----------------------------------------------------------------------===//
@ -722,14 +722,12 @@ SDNode *SelectionDAG::FindModifiedNodeSlot(SDNode *N,
ID.AddInteger(LD->getAddressingMode());
ID.AddInteger(LD->getExtensionType());
ID.AddInteger(LD->getMemoryVT().getRawBits());
ID.AddInteger(LD->getAlignment());
ID.AddInteger(LD->isVolatile());
ID.AddInteger(LD->getRawFlags());
} else if (const StoreSDNode *ST = dyn_cast<StoreSDNode>(N)) {
ID.AddInteger(ST->getAddressingMode());
ID.AddInteger(ST->isTruncatingStore());
ID.AddInteger(ST->getMemoryVT().getRawBits());
ID.AddInteger(ST->getAlignment());
ID.AddInteger(ST->isVolatile());
ID.AddInteger(ST->getRawFlags());
}
return CSEMap.FindNodeOrInsertPos(ID, InsertPos);
@ -1110,11 +1108,7 @@ SDValue SelectionDAG::getMemOperand(const MachineMemOperand &MO) {
FoldingSetNodeID ID;
AddNodeIDNode(ID, ISD::MEMOPERAND, getVTList(MVT::Other), 0, 0);
ID.AddPointer(v);
ID.AddInteger(MO.getFlags());
ID.AddInteger(MO.getOffset());
ID.AddInteger(MO.getSize());
ID.AddInteger(MO.getAlignment());
MO.Profile(ID);
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
@ -3225,8 +3219,7 @@ SelectionDAG::getLoad(ISD::MemIndexedMode AM, ISD::LoadExtType ExtType,
ID.AddInteger(AM);
ID.AddInteger(ExtType);
ID.AddInteger(EVT.getRawBits());
ID.AddInteger(Alignment);
ID.AddInteger(isVolatile);
ID.AddInteger(encodeMemSDNodeFlags(isVolatile, Alignment));
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
@ -3285,8 +3278,7 @@ SDValue SelectionDAG::getStore(SDValue Chain, SDValue Val,
ID.AddInteger(ISD::UNINDEXED);
ID.AddInteger(false);
ID.AddInteger(VT.getRawBits());
ID.AddInteger(Alignment);
ID.AddInteger(isVolatile);
ID.AddInteger(encodeMemSDNodeFlags(isVolatile, Alignment));
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
@ -3322,8 +3314,7 @@ SDValue SelectionDAG::getTruncStore(SDValue Chain, SDValue Val,
ID.AddInteger(ISD::UNINDEXED);
ID.AddInteger(1);
ID.AddInteger(SVT.getRawBits());
ID.AddInteger(Alignment);
ID.AddInteger(isVolatile);
ID.AddInteger(encodeMemSDNodeFlags(isVolatile, Alignment));
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
@ -3348,8 +3339,7 @@ SelectionDAG::getIndexedStore(SDValue OrigStore, SDValue Base,
ID.AddInteger(AM);
ID.AddInteger(ST->isTruncatingStore());
ID.AddInteger(ST->getMemoryVT().getRawBits());
ID.AddInteger(ST->getAlignment());
ID.AddInteger(ST->isVolatile());
ID.AddInteger(ST->getRawFlags());
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDValue(E, 0);
@ -4496,7 +4486,7 @@ MemSDNode::MemSDNode(unsigned Opc, SDVTList VTs, MVT memvt,
const Value *srcValue, int SVO,
unsigned alignment, bool vol)
: SDNode(Opc, VTs), MemoryVT(memvt), SrcValue(srcValue), SVOffset(SVO),
Flags(vol | ((Log2_32(alignment) + 1) << 1)) {
Flags(encodeMemSDNodeFlags(vol, alignment)) {
assert(isPowerOf2_32(alignment) && "Alignment is not a power of 2!");
assert(getAlignment() == alignment && "Alignment representation error!");
@ -4532,7 +4522,7 @@ MachineMemOperand MemSDNode::getMemOperand() const {
/// Profile - Gather unique data for the node.
///
void SDNode::Profile(FoldingSetNodeID &ID) {
void SDNode::Profile(FoldingSetNodeID &ID) const {
AddNodeIDNode(ID, this);
}