Remove the Function::getFnAttributes method in favor of using the AttributeSet
directly.

This is in preparation for removing the use of the 'Attribute' class as a
collection of attributes. That will shift to the AttributeSet class instead.

llvm-svn: 171253
diff --git a/llvm/lib/Target/ARM/Thumb2SizeReduction.cpp b/llvm/lib/Target/ARM/Thumb2SizeReduction.cpp
index a4f0847..4a7eb40 100644
--- a/llvm/lib/Target/ARM/Thumb2SizeReduction.cpp
+++ b/llvm/lib/Target/ARM/Thumb2SizeReduction.cpp
@@ -961,9 +961,11 @@
   STI = &TM.getSubtarget<ARMSubtarget>();
 
   // Optimizing / minimizing size?
-  Attribute FnAttrs = MF.getFunction()->getFnAttributes();
-  OptimizeSize = FnAttrs.hasAttribute(Attribute::OptimizeForSize);
-  MinimizeSize = FnAttrs.hasAttribute(Attribute::MinSize);
+  AttributeSet FnAttrs = MF.getFunction()->getAttributes();
+  OptimizeSize = FnAttrs.hasAttribute(AttributeSet::FunctionIndex,
+                                      Attribute::OptimizeForSize);
+  MinimizeSize = FnAttrs.hasAttribute(AttributeSet::FunctionIndex,
+                                      Attribute::MinSize);
 
   bool Modified = false;
   for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I)