Added destructors and comments.
Added correct spill candidate selection logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1493 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAlloc/IGNode.cpp b/lib/CodeGen/RegAlloc/IGNode.cpp
index d8473d2..4e66d9a 100644
--- a/lib/CodeGen/RegAlloc/IGNode.cpp
+++ b/lib/CodeGen/RegAlloc/IGNode.cpp
@@ -1,6 +1,9 @@
#include "llvm/CodeGen/IGNode.h"
+//-----------------------------------------------------------------------------
+// Constructor
+//-----------------------------------------------------------------------------
IGNode::IGNode(LiveRange *const PLR, unsigned int Ind): Index(Ind),
AdjList(),
ParentLR(PLR)
@@ -11,9 +14,11 @@
}
-
-void IGNode::pushOnStack() // sets on to stack and
-{ // reduce the degree of neighbors
+//-----------------------------------------------------------------------------
+// Sets this IGNode on stack and reduce the degree of neighbors
+//-----------------------------------------------------------------------------
+void IGNode::pushOnStack()
+{
OnStack = true;
int neighs = AdjList.size();
@@ -25,7 +30,10 @@
for(int i=0; i < neighs; i++) (AdjList[i])->decCurDegree();
}
-
+//-----------------------------------------------------------------------------
+// Deletes an adjacency node. IGNodes are deleted when coalescing merges
+// two IGNodes together.
+//-----------------------------------------------------------------------------
void IGNode::delAdjIGNode(const IGNode *const Node) {
vector <IGNode *>::iterator It = AdjList.begin();