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

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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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26094 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2006-02-09 22:11:03 +00:00
parent e487abbfbf
commit fae9f1cb34
2 changed files with 17 additions and 2 deletions
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10
include/llvm/CodeGen/SelectionDAG.h
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@@ -395,14 +395,20 @@ public:
std::vector<SDNode*> *Deleted = 0); std::vector<SDNode*> *Deleted = 0);
void ReplaceAllUsesWith(SDNode *From, const std::vector<SDOperand> &To, void ReplaceAllUsesWith(SDNode *From, const std::vector<SDOperand> &To,
std::vector<SDNode*> *Deleted = 0); std::vector<SDNode*> *Deleted = 0);
/// DeleteNode - Remove the specified node from the system. This node must /// DeleteNode - Remove the specified node from the system. This node must
/// have no referrers. /// have no referrers.
void DeleteNode(SDNode *N); void DeleteNode(SDNode *N);
void dump() const; void dump() const;
/// 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.
static void InsertISelMapEntry(std::map<SDOperand, SDOperand> &Map,
SDNode *Key, unsigned KeyResNo,
SDNode *Element, unsigned ElementResNo);
private: private:
void RemoveNodeFromCSEMaps(SDNode *N); void RemoveNodeFromCSEMaps(SDNode *N);
SDNode *AddNonLeafNodeToCSEMaps(SDNode *N); SDNode *AddNonLeafNodeToCSEMaps(SDNode *N);

9
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@@ -2748,3 +2748,12 @@ void SelectionDAG::dump() const {
std::cerr << "\n\n"; 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)));
}