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Revised per review feedback from previous patch.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41353 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-08-24 05:08:11 +00:00
parent ada530b4f5
commit d3b51fd170
3 changed files with 29 additions and 56 deletions
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29
lib/VMCore/Constants.cpp
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@@ -253,25 +253,14 @@ bool ConstantFP::isExactlyValue(double V) const {
namespace {
struct DenseMapAPFloatKeyInfo {
struct KeyTy {
APFloat val;
KeyTy(const APFloat& V) : val(V){}
KeyTy(const KeyTy& that) : val(that.val) {}
bool operator==(const KeyTy& that) const {
return this->val == that.val;
}
bool operator!=(const KeyTy& that) const {
return !this->operator==(that);
}
};
static inline KeyTy getEmptyKey() {
return KeyTy(APFloat(APFloat::Bogus,1));
static inline APFloat getEmptyKey() {
return APFloat(APFloat::Bogus,1);
}
static inline KeyTy getTombstoneKey() {
return KeyTy(APFloat(APFloat::Bogus,2));
static inline APFloat getTombstoneKey() {
return APFloat(APFloat::Bogus,2);
}
static unsigned getHashValue(const KeyTy &Key) {
return Key.val.getHashValue();
static unsigned getHashValue(const APFloat &Key) {
return Key.getHashValue();
}
static bool isPod() { return false; }
};
@@ -279,21 +268,21 @@ namespace {
//---- ConstantFP::get() implementation...
//
typedef DenseMap<DenseMapAPFloatKeyInfo::KeyTy, ConstantFP*,
typedef DenseMap<APFloat, ConstantFP*,
DenseMapAPFloatKeyInfo> FPMapTy;
static ManagedStatic<FPMapTy> FPConstants;
ConstantFP *ConstantFP::get(const Type *Ty, double V) {
if (Ty == Type::FloatTy) {
DenseMapAPFloatKeyInfo::KeyTy Key(APFloat((float)V));
APFloat Key(APFloat((float)V));
ConstantFP *&Slot = (*FPConstants)[Key];
if (Slot) return Slot;
return Slot = new ConstantFP(Ty, (float)V);
} else if (Ty == Type::DoubleTy) {
// Without the redundant cast, the following is taken to be
// a function declaration. What a language.
DenseMapAPFloatKeyInfo::KeyTy Key(APFloat((double)V));
APFloat Key(APFloat((double)V));
ConstantFP *&Slot = (*FPConstants)[Key];
if (Slot) return Slot;
return Slot = new ConstantFP(Ty, V);