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Change ConstantSDNode to store an APInt instead of a uint64_t, and

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begin adding some methods to use it this way.

llvm-svn: 46899
This commit is contained in:
Dan Gohman 2008-02-08 22:59:30 +00:00
parent 9aba178666
commit 672d341167
3 changed files with 20 additions and 7 deletions
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4
include/llvm/CodeGen/SelectionDAG.h
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@ -172,10 +172,14 @@ public:
//
SDOperand getString(const std::string &Val);
SDOperand getConstant(uint64_t Val, MVT::ValueType VT, bool isTarget = false);
SDOperand getConstant(const APInt &Val, MVT::ValueType VT, bool isTarget = false);
SDOperand getIntPtrConstant(uint64_t Val, bool isTarget = false);
SDOperand getTargetConstant(uint64_t Val, MVT::ValueType VT) {
return getConstant(Val, VT, true);
}
SDOperand getTargetConstant(const APInt &Val, MVT::ValueType VT) {
return getConstant(Val, VT, true);
}
SDOperand getConstantFP(double Val, MVT::ValueType VT, bool isTarget = false);
SDOperand getConstantFP(const APFloat& Val, MVT::ValueType VT,
bool isTarget = false);

10
include/llvm/CodeGen/SelectionDAGNodes.h
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@ -24,6 +24,7 @@
#include "llvm/ADT/GraphTraits.h"
#include "llvm/ADT/iterator"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGen/MemOperand.h"
#include "llvm/Support/DataTypes.h"
@ -1173,21 +1174,22 @@ public:
};
class ConstantSDNode : public SDNode {
uint64_t Value;
APInt Value;
virtual void ANCHOR(); // Out-of-line virtual method to give class a home.
protected:
friend class SelectionDAG;
ConstantSDNode(bool isTarget, uint64_t val, MVT::ValueType VT)
ConstantSDNode(bool isTarget, const APInt &val, MVT::ValueType VT)
: SDNode(isTarget ? ISD::TargetConstant : ISD::Constant, getSDVTList(VT)),
Value(val) {
}
public:
uint64_t getValue() const { return Value; }
const APInt &getAPIntValue() const { return Value; }
uint64_t getValue() const { return Value.getZExtValue(); }
int64_t getSignExtended() const {
unsigned Bits = MVT::getSizeInBits(getValueType(0));
return ((int64_t)Value << (64-Bits)) >> (64-Bits);
return ((int64_t)Value.getZExtValue() << (64-Bits)) >> (64-Bits);
}
bool isNullValue() const { return Value == 0; }

13
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -706,18 +706,25 @@ SDOperand SelectionDAG::getString(const std::string &Val) {
}
SDOperand SelectionDAG::getConstant(uint64_t Val, MVT::ValueType VT, bool isT) {
MVT::ValueType EltVT =
MVT::isVector(VT) ? MVT::getVectorElementType(VT) : VT;
return getConstant(APInt(MVT::getSizeInBits(EltVT), Val), VT, isT);
}
SDOperand SelectionDAG::getConstant(const APInt &Val, MVT::ValueType VT, bool isT) {
assert(MVT::isInteger(VT) && "Cannot create FP integer constant!");
MVT::ValueType EltVT =
MVT::isVector(VT) ? MVT::getVectorElementType(VT) : VT;
// Mask out any bits that are not valid for this constant.
Val &= MVT::getIntVTBitMask(EltVT);
assert(Val.getBitWidth() == MVT::getSizeInBits(EltVT) &&
"APInt size does not match type size!");
unsigned Opc = isT ? ISD::TargetConstant : ISD::Constant;
FoldingSetNodeID ID;
AddNodeIDNode(ID, Opc, getVTList(EltVT), 0, 0);
ID.AddInteger(Val);
ID.AddAPInt(Val);
void *IP = 0;
SDNode *N = NULL;
if ((N = CSEMap.FindNodeOrInsertPos(ID, IP)))