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Add support for attribute groups in the value enumerator.

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Attribute groups are essentially all AttributeSets which are used by the
program. Enumerate them here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174844 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2013-02-10 23:06:02 +00:00
parent a311c526ed
commit 8c2e77f895
2 changed files with 24 additions and 0 deletions
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10
lib/Bitcode/Writer/ValueEnumerator.cpp
View File

@ -427,6 +427,16 @@ void ValueEnumerator::EnumerateAttributes(const AttributeSet &PAL) {
Attribute.push_back(PAL);
Entry = Attribute.size();
}
// Do lookups for all attribute groups.
for (unsigned i = 0, e = PAL.getNumSlots(); i != e; ++i) {
AttributeSet AS = PAL.getSlotAttributes(i);
unsigned &Entry = AttributeSetMap[AS];
if (Entry == 0) {
AttributeSets.push_back(AS);
Entry = AttributeSets.size();
}
}
}
void ValueEnumerator::incorporateFunction(const Function &F) {

14
lib/Bitcode/Writer/ValueEnumerator.h
View File

@ -52,6 +52,10 @@ private:
SmallVector<const MDNode *, 8> FunctionLocalMDs;
ValueMapType MDValueMap;
typedef DenseMap<AttributeSet, unsigned> AttributeSetMapType;
AttributeSetMapType AttributeSetMap;
std::vector<AttributeSet> AttributeSets;
typedef DenseMap<void*, unsigned> AttributeMapType;
AttributeMapType AttributeMap;
std::vector<AttributeSet> Attribute;
@ -105,6 +109,13 @@ public:
return I->second;
}
unsigned getAttributeSetID(const AttributeSet &PAL) const {
if (PAL.isEmpty()) return 0; // Null maps to zero.
AttributeSetMapType::const_iterator I = AttributeSetMap.find(PAL);
assert(I != AttributeSetMap.end() && "Attribute not in ValueEnumerator!");
return I->second;
}
/// getFunctionConstantRange - Return the range of values that corresponds to
/// function-local constants.
void getFunctionConstantRange(unsigned &Start, unsigned &End) const {
@ -124,6 +135,9 @@ public:
const std::vector<AttributeSet> &getAttributes() const {
return Attribute;
}
const std::vector<AttributeSet> &getAttributeSets() const {
return AttributeSets;
}
/// getGlobalBasicBlockID - This returns the function-specific ID for the
/// specified basic block. This is relatively expensive information, so it