rename destroy -> releaseMemory to properly hook into passmgr.

llvm-svn: 55508
diff --git a/llvm/lib/Analysis/IntervalPartition.cpp b/llvm/lib/Analysis/IntervalPartition.cpp
index 7280f8f..adb6e9d 100644
--- a/llvm/lib/Analysis/IntervalPartition.cpp
+++ b/llvm/lib/Analysis/IntervalPartition.cpp
@@ -23,8 +23,8 @@
 // IntervalPartition Implementation
 //===----------------------------------------------------------------------===//
 
-// destroy - Reset state back to before function was analyzed
-void IntervalPartition::destroy() {
+// releaseMemory - Reset state back to before function was analyzed
+void IntervalPartition::releaseMemory() {
   for (unsigned i = 0, e = Intervals.size(); i != e; ++i)
     delete Intervals[i];
   IntervalMap.clear();