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Futureproof AttrBuild if we ever have more than 64 attr enum values.

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Currently we're at 34. Bitset should compile into virtually the same code as
uint64_t here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175437 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2013-02-18 12:09:51 +00:00
parent 32d0b2a9e8
commit 3f213e7b3a
2 changed files with 17 additions and 19 deletions
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10
include/llvm/IR/Attributes.h
View File

@ -19,6 +19,7 @@
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/Support/PointerLikeTypeTraits.h"
#include <bitset>
#include <cassert>
#include <map>
#include <string>
@ -378,7 +379,7 @@ template<> struct DenseMapInfo<AttributeSet> {
/// value, however, is not. So this can be used as a quick way to test for
/// equality, presence of attributes, etc.
class AttrBuilder {
uint64_t Attrs;
std::bitset<Attribute::EndAttrKinds> Attrs;
std::map<std::string, std::string> TargetDepAttrs;
uint64_t Alignment;
uint64_t StackAlignment;
@ -422,9 +423,8 @@ public:
/// \brief Return true if the builder has the specified attribute.
bool contains(Attribute::AttrKind A) const {
assert((unsigned)A < 64 && A < Attribute::EndAttrKinds &&
"Attribute out of range!");
return Attrs & (1ULL << A);
assert((unsigned)A < Attribute::EndAttrKinds && "Attribute out of range!");
return Attrs[A];
}
/// \brief Return true if the builder has the specified target-dependent
@ -457,7 +457,7 @@ public:
/// \brief Return true if the builder contains no target-independent
/// attributes.
bool empty() const { return Attrs == 0; }
bool empty() const { return Attrs.none(); }
// Iterators for target-dependent attributes.
typedef std::pair<std::string, std::string> td_type;

26
lib/IR/Attributes.cpp
View File

@ -924,16 +924,15 @@ AttrBuilder::AttrBuilder(AttributeSet AS, unsigned Idx)
}
void AttrBuilder::clear() {
Attrs = 0;
Attrs.reset();
Alignment = StackAlignment = 0;
}
AttrBuilder &AttrBuilder::addAttribute(Attribute::AttrKind Val) {
assert((unsigned)Val < 64 && Val < Attribute::EndAttrKinds &&
"Attribute out of range!");
assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
assert(Val != Attribute::Alignment && Val != Attribute::StackAlignment &&
"Adding alignment attribute without adding alignment value!");
Attrs |= 1ULL << Val;
Attrs[Val] = true;
return *this;
}
@ -944,7 +943,7 @@ AttrBuilder &AttrBuilder::addAttribute(Attribute Attr) {
}
Attribute::AttrKind Kind = Attr.getKindAsEnum();
Attrs |= 1ULL << Kind;
Attrs[Kind] = true;
if (Kind == Attribute::Alignment)
Alignment = Attr.getAlignment();
@ -959,9 +958,8 @@ AttrBuilder &AttrBuilder::addAttribute(StringRef A, StringRef V) {
}
AttrBuilder &AttrBuilder::removeAttribute(Attribute::AttrKind Val) {
assert((unsigned)Val < 64 && Val < Attribute::EndAttrKinds &&
"Attribute out of range!");
Attrs &= ~(1ULL << Val);
assert((unsigned)Val < Attribute::EndAttrKinds && "Attribute out of range!");
Attrs[Val] = false;
if (Val == Attribute::Alignment)
Alignment = 0;
@ -985,7 +983,7 @@ AttrBuilder &AttrBuilder::removeAttributes(AttributeSet A, uint64_t Index) {
Attribute Attr = *I;
if (Attr.isEnumAttribute() || Attr.isAlignAttribute()) {
Attribute::AttrKind Kind = I->getKindAsEnum();
Attrs &= ~(1ULL << Kind);
Attrs[Kind] = false;
if (Kind == Attribute::Alignment)
Alignment = 0;
@ -1016,7 +1014,7 @@ AttrBuilder &AttrBuilder::addAlignmentAttr(unsigned Align) {
assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
assert(Align <= 0x40000000 && "Alignment too large.");
Attrs |= 1ULL << Attribute::Alignment;
Attrs[Attribute::Alignment] = true;
Alignment = Align;
return *this;
}
@ -1028,7 +1026,7 @@ AttrBuilder &AttrBuilder::addStackAlignmentAttr(unsigned Align) {
assert(isPowerOf2_32(Align) && "Alignment must be a power of two.");
assert(Align <= 0x100 && "Alignment too large.");
Attrs |= 1ULL << Attribute::StackAlignment;
Attrs[Attribute::StackAlignment] = true;
StackAlignment = Align;
return *this;
}
@ -1055,7 +1053,7 @@ bool AttrBuilder::contains(StringRef A) const {
}
bool AttrBuilder::hasAttributes() const {
return Attrs != 0 || !TargetDepAttrs.empty();
return !Attrs.none() || !TargetDepAttrs.empty();
}
bool AttrBuilder::hasAttributes(AttributeSet A, uint64_t Index) const {
@ -1072,7 +1070,7 @@ bool AttrBuilder::hasAttributes(AttributeSet A, uint64_t Index) const {
I != E; ++I) {
Attribute Attr = *I;
if (Attr.isEnumAttribute() || Attr.isAlignAttribute()) {
if (Attrs & (1ULL << I->getKindAsEnum()))
if (Attrs[I->getKindAsEnum()])
return true;
} else {
assert(Attr.isStringAttribute() && "Invalid attribute kind!");
@ -1106,7 +1104,7 @@ AttrBuilder &AttrBuilder::addRawValue(uint64_t Val) {
for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
I = Attribute::AttrKind(I + 1)) {
if (uint64_t A = (Val & AttributeImpl::getAttrMask(I))) {
Attrs |= 1ULL << I;
Attrs[I] = true;
if (I == Attribute::Alignment)
Alignment = 1ULL << ((A >> 16) - 1);