Remove a use of AttributeWithIndex.

We want to remove AttributeWithIndex because it provides a non-encapsulated view
of the AttributeSetImpl object. Instead, use accessor methods and iterators.

Eventually, this code can be simplified because the Attribute object will hold
only one attribute instead of multiple attributes.

llvm-svn: 173641

1 files changed, 15 insertions, 11 deletions

diff --git a/llvm/lib/IR/Attributes.cpp b/llvm/lib/IR/Attributes.cpp
index 361f3d6c8cc..59d3ef03dd8 100644
--- a/llvm/lib/IR/Attributes.cpp
+++ b/llvm/lib/IR/Attributes.cpp
@@ -197,17 +197,21 @@ AttrBuilder::AttrBuilder(AttributeSet AS, unsigned Idx)
   AttributeSetImpl *pImpl = AS.pImpl;
   if (!pImpl) return;
 
-  ArrayRef<AttributeWithIndex> AttrList = pImpl->getAttributes();
-  const AttributeWithIndex *AWI = 0;
-  for (unsigned I = 0, E = AttrList.size(); I != E; ++I)
-    if (AttrList[I].Index == Idx) {
-      AWI = &AttrList[I];
-      break;
-    }
+  AttrBuilder B;
+
+  for (unsigned I = 0, E = pImpl->getNumAttributes(); I != E; ++I) {
+    if (pImpl->getSlotIndex(I) != Idx) continue;
+
+    for (AttributeSetNode::const_iterator II = pImpl->begin(I),
+           IE = pImpl->end(I); II != IE; ++II)
+      B.addAttributes(*II);
+
+    break;
+  }
 
-  if (!AWI) return;
+  if (!B.hasAttributes()) return;
 
-  uint64_t Mask = AWI->Attrs.Raw();
+  uint64_t Mask = B.Raw();
 
   for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
        I = Attribute::AttrKind(I + 1)) {
@@ -861,8 +865,8 @@ AttributeSet AttributeSet::removeAttr(LLVMContext &C, unsigned Idx,
 }
 
 void AttributeSet::dump() const {
-  dbgs() << "PAL[ ";
-  for (unsigned i = 0; i < getNumSlots(); ++i) {
+  dbgs() << "PAL[\n";
+  for (unsigned i = 0, e = getNumSlots(); i < e; ++i) {
     uint64_t Index = getSlotIndex(i);
     dbgs() << "  { ";
     if (Index == ~0U)