[llvm] r173975 - Remove redundant code.

[Bill Wendling]

Author: void
Date: Wed Jan 30 15:22:59 2013
New Revision: 173975

URL: http://llvm.org/viewvc/llvm-project?rev=173975&view=rev
Log:
Remove redundant code.

It was creating a new AttrBuilder when we could just fill in the AttrBuilder
we're building.

Modified:
    llvm/trunk/lib/IR/Attributes.cpp

Modified: llvm/trunk/lib/IR/Attributes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Attributes.cpp?rev=173975&r1=173974&r2=173975&view=diff
==============================================================================
--- llvm/trunk/lib/IR/Attributes.cpp (original)
+++ llvm/trunk/lib/IR/Attributes.cpp Wed Jan 30 15:22:59 2013
@@ -767,33 +767,15 @@ AttrBuilder::AttrBuilder(AttributeSet AS
   AttributeSetImpl *pImpl = AS.pImpl;
   if (!pImpl) return;
 
-  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),
+    for (AttributeSetImpl::const_iterator II = pImpl->begin(I),
            IE = pImpl->end(I); II != IE; ++II)
-      B.addAttributes(*II);
+      addAttributes(*II);
 
     break;
   }
-
-  if (!B.hasAttributes()) return;
-
-  uint64_t Mask = B.Raw();
-
-  for (Attribute::AttrKind I = Attribute::None; I != Attribute::EndAttrKinds;
-       I = Attribute::AttrKind(I + 1)) {
-    if (uint64_t A = (Mask & AttributeImpl::getAttrMask(I))) {
-      Attrs.insert(I);
-
-      if (I == Attribute::Alignment)
-        Alignment = 1ULL << ((A >> 16) - 1);
-      else if (I == Attribute::StackAlignment)
-        StackAlignment = 1ULL << ((A >> 26)-1);
-    }
-  }
 }
 
 void AttrBuilder::clear() {