Added SelectionDAG::InsertISelMapEntry(). This is used to workaround the gcc

problem where it inline the map insertion call too aggressively. Before this
change it was producing a frame size of 24k for Select_store(), now it's down
to 10k (by calling this method rather than calling the map insertion operator).

llvm-svn: 26094

1 files changed, 9 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 9c9df11bed2..23d1dc34cc1 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2748,3 +2748,12 @@ void SelectionDAG::dump() const {
   std::cerr << "\n\n";
 }
 
+/// InsertISelMapEntry - A helper function to insert a key / element pair
+/// into a SDOperand to SDOperand map. This is added to avoid the map
+/// insertion operator from being inlined.
+void SelectionDAG::InsertISelMapEntry(std::map<SDOperand, SDOperand> &Map,
+                                      SDNode *Key, unsigned KeyResNo,
+                                      SDNode *Element, unsigned ElementResNo) {
+  Map.insert(std::make_pair(SDOperand(Key, KeyResNo),
+                            SDOperand(Element, ElementResNo)));
+}