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IR/Attributes: Provide EmptyKey and TombstoneKey in part of enum, as workaround for gcc-4.4 take #2.

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I will investigate, later, what was wrong. I am too tired for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171611 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
NAKAMURA Takumi 2013-01-05 07:55:47 +00:00
parent 00ece1b846
commit 3a4779a921
2 changed files with 9 additions and 3 deletions
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10
include/llvm/IR/Attributes.h
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@ -93,7 +93,11 @@ public:
UWTable, ///< Function must be in a unwind table
ZExt, ///< Zero extended before/after call
EndAttrKinds ///< Sentinal value useful for loops
EndAttrKinds, ///< Sentinal value useful for loops
// Values for DenseMapInfo
EmptyKey = 0x7FFFFFFF,
TombstoneKey = -0x7FFFFFFF - 1
};
private:
AttributeImpl *pImpl;
@ -165,10 +169,10 @@ public:
/// AttrBuilder.
template<> struct DenseMapInfo<Attribute::AttrKind> {
static inline Attribute::AttrKind getEmptyKey() {
return Attribute::AttrKind(~0U);
return Attribute::EmptyKey;
}
static inline Attribute::AttrKind getTombstoneKey() {
return Attribute::AttrKind(~0U - 1);
return Attribute::TombstoneKey;
}
static unsigned getHashValue(const Attribute::AttrKind &Val) {
return Val * 37U;

2
lib/IR/Attributes.cpp
View File

@ -426,6 +426,8 @@ uint64_t AttributeImpl::getBitMask() const {
uint64_t AttributeImpl::getAttrMask(Attribute::AttrKind Val) {
switch (Val) {
case Attribute::EndAttrKinds: break;
case Attribute::EmptyKey: break;
case Attribute::TombstoneKey: break;
case Attribute::None: return 0;
case Attribute::ZExt: return 1 << 0;
case Attribute::SExt: return 1 << 1;